Fluke 189 инструкция на русском

  • Page 1: Fluke 189

    ® Model 187 & 189 True RMS M ultimeter Users Manual August 2000, Rev.2, 6/02 © 2000, 2002 Fluke Corporation. All rights reserved. Printed in U.S.A . All product names are trademarks of their respective companies.[…]

  • Page 2: Fluke 189

    Lifetime Li mi ted Warranty Each Fluke 20, 70, 80, 170 and 180 Series DMM will be f ree from defect s in material and work mans hip f or its lif et ime. As us ed herein, “lifet i m e” i s defined as s ev en years af ter Fluk e di s continues manufac t uring the produc t , but t he warrant y period s hal l be at l eas t ten y ears from the date […]

  • Page 3: Fluke 189

    i Table of Contents Chapter Title Page 1 Before You Start ……………………………………………………………………………………………. 1-1 Safety Information……………………………………………………………………………………………. 1-1 Contacting Fluke ……………………………..[…]

  • Page 4: Fluke 189

    Model 187 & 189 Users M anual ii Selecting the Range …………………………………………………………………………………………. 2-10 Understanding the Display ………………………………………………………………………………… 2-10 Primary Display …………………………………….[…]

  • Page 5: Fluke 189

    Contents (continued) iii Measuring AC Current …………………………………………………………………………………. 3-18 Measuring DC Current …………………………………………………………………………………. 3-20 Measuring Frequency ………………………………………………………[…]

  • Page 6: Fluke 189

    Model 187 & 189 Users M anual iv 6 Maintenance ………………………………………………………………………………………………….. 6- 1 Introduction ……………………………………………………………………………………………………. .6 — 1 General Maintenance ……………………[…]

  • Page 7: Fluke 189

    v List of Tables Table Title Page 1-1. Safety Information…………………………………………………………………………………………… …….. 1-2 1-2. International Electrical Sym bols ………………………………………………………………………………. .1 — 4 2-1. Rotary Switch Selections ……[…]

  • Page 8: Fluke 189

    Model 187 & 189 Users M anual vi[…]

  • Page 9: Fluke 189

    vii List of Figures Figure Title P age 2-1. AC Volts Dis play ……………………………………………………………………………………………………. 2-2 2-2. Rotary Switch ………………………………………………………………………………………………………… 2-4 2-3. Pushbuttons …….[…]

  • Page 10: Fluke 189

    Model 187 & 189 Users M anual viii 3-10. Temperature Measurem ent ……………………………………………………………………………………… 3-15 3-11. AC Current Measurement………………………………………………………………………………………. .. 3-19 3-12. DC Current Measurement ………[…]

  • Page 11: Fluke 189

    1-1 Chapter 1 Before You Start Safety Informa tion The Fluke Model 187 and M odel 189 True RMS Multimeters (hereafter referred to as the “ meter ” ) comply with: • EN61010.1:1993 • ANSI/ISA S82.01-1994 • CAN/CSA C22.2 No. 1010.1-92 • 1000V Overvoltage Category III, Pollution Degree 2 • 600V Overvoltage C ategory IV, Pollution Degree 2[…]

  • Page 12: Fluke 189

    Model 187 & 189 Users M anual 1-2 Table 1-1. Safety Information W Warning To avoid possible electric shock or personal injury, follow these guidelines: • Do not use the meter if it is damaged. Before you use the meter , inspect the case. Look for cracks or missing plastic. Pay particular attention to the insulation surrounding the connectors.[…]

  • Page 13: Fluke 189

    Before You Start Safety Information 1 1-3 Table 1-1. Safety Information (cont.) W Warning • When using the probes, keep your fingers behind the finger guar ds on the probes. • Connect the common test lead before you connect the live test lead. When you disconnect test leads, disconnect the live test lead first. • Remove test leads from the me[…]

  • Page 14: Fluke 189

    Model 187 & 189 Users M anual 1-4 Symbols Symbols used on the meter and in this manual are explained in Table 1-2. Table 1-2. International Electrical Symbols AC (Alternating Current) Earth ground DC (Direct Current) Fuse AC and DC Double insulated Battery Important information Complies w ith relevant Canadian Standards Ass ociation directives […]

  • Page 15: Fluke 189

    2-1 Chapter 2 Getting Acquainted Introduction Although this manual des cribes the operation of both Models 187 and 189, all illus trations and exam ples assum e use of Model 189. Additional c apabilities with Model 189 are disc ussed in Chapter 4. Thes e capabilities include the following: • An enhanced memory function that features an additional[…]

  • Page 16: Fluke 189

    Model 187 & 189 Users M anual 2-2 tc031f. eps Figure 2-1. AC Volts Display Battery Considerations The meter uses four AA alkaline batteries. The following paragraphs desc ribe several tec hniques used to c onserve battery power. Automatic Powe r Off The display blank s and the meter goes into a “ sleep ” mode if you hav e not changed the ro[…]

  • Page 17: Fluke 189

    Getting Acquainted Battery Considerations 2 2-3 Automatic Backligh t Off Press T to select the back light level (low, high, or off.) In low or high, the backlight turns off automatically after a given period. This period is also preset to 15 m inutes and can be set to a m aximum of 99 m inutes from the s etup menu. If the period is s et to 0, the b[…]

  • Page 18: Fluke 189

    Model 187 & 189 Users M anual 2-4 Rotary Switch Turn the meter on by s electing any m easurement function (identified with white letters around the rotary s witch). The meter presents a standard display for that func tion (range, measurem ent units, modifiers, etc.) The display may also be influenced by s ome of the choic es made in Setup. Use […]

  • Page 19: Fluke 189

    Getting Acquainted Pushbuttons 2 2-5 Pushbuttons The buttons activ ate features that augment the func tion selected with the rotary switc h. The buttons are shown in Figure 2-3 and described in Table 2-2. Use the blue button ( % ) to acc ess func tions labeled in blue for some of the rotary s witch pos itions. Table 2-1 defines all blue button func[…]

  • Page 20: Fluke 189

    Model 187 & 189 Users M anual 2-6 Table 2-1. Rotary Switch Selections Position Rotary Switch Function % Blue Key Function AC voltage meas urement from 0 V to 1000.0 V dB over AC, AC over dB , AC millivolt m easurement from 0 mV to 3000.0 mV dB over AC, AC ov er dB $ DC voltage m easurement from 0 V to 1000.0 V AC over DC (AC in primary dis pl[…]

  • Page 21: Fluke 189

    Getting Acquainted Pushbuttons 2 2-7 Table 2-1. Rotary Switch Positions (cont.) Position Rotary Switch Function % Blue Key Function I AC current meas urements from 0 mA to 20.000 A none = AC current meas urements from 0 µ A to 5000.0 µ A none K DC current m easurements from 0 mA to 20.000 A AC over DC (AC in prim ary display , DC in sec ondary di[…]

  • Page 22: Fluke 189

    Model 187 & 189 Users M anual 2-8 Table 2-2. Pushbuttons Button Description Yellow Button Function Description Note Press O to access “Yellow Button Functions .” The O box and the 24-hour clock appear in the lower corners of the display and the prim ary display freezes, allowing tim e to press a s econd button. T l Press to turn bac klight […]

  • Page 23: Fluke 189

    Getting Acquainted Pushbuttons 2 2-9 Table 2-2. Pushbuttons (cont.) Button Description Yellow Button Function Description [ • In Setup, increment a digit . • In counter functions , select pos itive pulse s lope. • In ohms c ontinuity, selec t beep on open. • In VIEW MEM, s ee Chapter 4 (Model 189). (none) ] • In Setup, decrement a digit .[…]

  • Page 24: Fluke 189

    Model 187 & 189 Users M anual 2-10 Selecting the Range Press R to select either a fixed range or the autorange feature. Note You cannot use R in c onductance, diode test, and temperature func tions or with the REL, MIN MAX, and FAST M N MX features. Thes e selections all use a spec ific fixed range. Autoranging (AUTO lighted in the display ) al[…]

  • Page 25: Fluke 189

    Getting Acquainted Understanding the Dis play 2 2-11 • dB (in ac volts func tions): the dBm or dBV v alue. • REL: the difference between the pres ent reading and a stored reference reading. • Setup: various mes sages (s ee Chapter 5). • Overload c onditions: OL display ed. • Error conditions. Secondary Dis pla y The secondary display ofte[…]

  • Page 26: Fluke 189

    Model 187 & 189 Users M anual 2-12 14 16 15 17 8 9 10 11 7 13 5 6 2 4 3 1 12 tc011f. eps Figure 2-4. Display Features[…]

  • Page 27: Fluke 189

    Getting Acquainted Understanding the Dis play 2 2-13 Table 2-3. Display Features Number Feature Description  ~ Continuity test func tion is selected.  Bar Graph. In normal operation 0 (zero) is on the left. In Relative %, 0 is in the center, negativ e values are to the left and pos itive to the right. The polarity indicator left of the bar gr[…]

  • Page 28: Fluke 189

    Model 187 & 189 Users M anual 2-14 Table 2-3. Display Features (cont.) Number Feature Description  FAST MIN MAX AVG FAST MN MX m ode is enabled. ( O M ) Minimum reading displayed. Maxim um reading display ed. Average reading display ed.  ; Readings are being recorded in m emory (M odel 189 only.) ( O + D )  g The meter is in Hold m ode[…]

  • Page 29: Fluke 189

    Getting Acquainted Understanding the Dis play 2 2-15 Table 2-3. Display Features (cont.) Number Feature Description  AC+DC For dc volts and dc amps functions, reading represents the rms total of ac and dc measurem ents. e , k e M e , Ω : Ohm. The unit of res istance. k Ω : Kilohm. 1 x 10 3 or 1000 ohm s. M Ω : Megohm. 1 x 10 6 or 1,000,000[…]

  • Page 30: Fluke 189

    Model 187 & 189 Users M anual 2-16 Table 2-3. Display Features (cont.) Number Feature Description  51000 AUTO MANUAL Range. Digits dis play range in use.  f MS 88:88 Time Display. Used with HOLD, AutoHOLD, M IN MAX, FAST MN M X (SAVE, and LOGGING Model 189). Elapsed Time Dis play ( f on): show n in minutes:s econds to max imum of 59:59 — […]

  • Page 31: Fluke 189

    Getting Acquainted Using the Input Terminals 2 2-17 Using the Input Terminals All functions ex cept current us e the * and COM inputs. Current func tions use the inputs shown below: • I or K function: Us e A and COM inputs from 400 mA to 20 A. Use m A/ µ A and COM for inputs ≤ 400 mA. • = or x function: Us e mA/ µ A and COM for inputs ≤ 5[…]

  • Page 32: Fluke 189

    Model 187 & 189 Users M anual 2-18 Using Display Hold Press Q to enter the Display Hold m ode and freeze the present reading and its tim e stamp. New readings now appear in the secondary display. See Figure 2-6. To ex it Display H old mode, press Q again. Note The bar graph and secondary display m ay show different units in Capacitanc e and Ohm[…]

  • Page 33: Fluke 189

    Getting Acquainted Using AutoHO LD 2 2-19 Using AutoHOLD W Warning AutoHOLD mode does not capture unstable or noisy readings. Do not use AutoHOLD mode to determine that circuits are without power. To enter AutoHOLD, press OQ (AutoHOLD). AutoHOLD m ode freezes the present reading and its time stamp. New readings now appear in the sec ondary display.[…]

  • Page 34: Fluke 189

    Model 187 & 189 Users M anual 2-20 To exit MIN M AX mode, press O N (CANCEL) or turn the rotary switc h to a different position. Also, M IN MAX mode turns off automatically when a flashing B (low battery condition) oc curs. Note Minimum, maximum , and average values stored in the MIN MAX m ode are lost when the m eter is turned off. The MIN MAX[…]

  • Page 35: Fluke 189

    Getting Acquainted Using F AST MN MX 2 2-21 Using FAST MN MX FAST MN MX c an capture transient s ignal events as short as 250 µs, but with dec reased acc uracy; only 3-1/2 display digits are allowed. Activate FAST MN MX by pres sing O M . As with regular MIN MAX, y ou can then press M to cycle through maximum , minimum , and average primary displa[…]

  • Page 36: Fluke 189

    Model 187 & 189 Users M anual 2-22 Using HOLD with MIN MAX or FAS T MN MX You can enable the HOLD mode when in the MIN MAX mode is by pressing Q . No further minimum , maximum , or average updates oc cur while the HOLD m ode is enabled. Exit HOLD mode by press ing Q a second tim e. Using Relative Mode (REL) Selecting Relativ e mode ( D ) caus e[…]

  • Page 37: Fluke 189

    3-1 Chapter 3 Making Measurements Introduction Chapter 3 explains how to make m easurements . Most measurem ent functions c an be selected by using the rotary switc h. White letters or sy mbols identify primary func tions; blue letters or sy mbols identify alternativ e functions. Press the blue button to acces s these alternate func tions. Frequenc[…]

  • Page 38: Fluke 189

    Model 187 & 189 Users M anual 3-2 When measuring v oltage, the meter acts like a 10 M Ω (10,000,000 Ω ) impedance in parallel with the c ircuit. This loading effect can c ause meas urement errors in high- impedance c ircuits. In mos t cases , the error is negligible (0.1% or less) if the c ircuit impedanc e is 10 k Ω (10,000 Ω ) or l e […]

  • Page 39: Fluke 189

    Making Measurements Measuring Voltage 3 3-3 dB Measurements in AC Volts Functions The two ac volts functions allow you to display readings as deviations in dB (dec ibels) above or below an established level. Set up dB measurem ents with the following procedure: 1. Make an ac volts meas urement to be used as a reference point. 2. Press % to select d[…]

  • Page 40: Fluke 189

    Model 187 & 189 Users M anual 3-4 dB is calc ulated with the following formula:       = Vr Vx dB 10 log * 20 • For dBm, Vr is the v oltage across the referenc e resistanc e at 1 mW. For example, Vr w ould be 0.7746 V with a 600 Ω reference resis tance. • For dBV, the reference voltage (Vr) is 1 V. Measuring DC Volt age S[…]

  • Page 41: Fluke 189

    Making Measurements Measuring Voltage 3 3-5 AC over DC DC over AC AC + DC tc024f. eps Figure 3-3. AC and DC D isplay When the meter shows ac over dc or dc over ac , the following other pushbutton functions are not available: • AutoHOLD ( O Q ) • MIN MAX ( M ) • FAST MN MX ( O M ) • Hz ( N ) • Relative ( D ) • LOGGING ( O D )[…]

  • Page 42: Fluke 189

    Model 187 & 189 Users M anual 3-6 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA FUSED[…]

  • Page 43: Fluke 189

    Making Measurements Measuring Res istanc e 3 3-7 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V […]

  • Page 44: Fluke 189

    Model 187 & 189 Users M anual 3-8 Keep the following in mind when m easuring resis tance: • Because the m eter ’ s test current flows through all possible paths between the probe tips, the meas ured value of a resistor in a c ircuit is often different from the resistor ’ s rated value. • The test leads c an add 0.1 Ω to 0.2 Ω of err[…]

  • Page 45: Fluke 189

    Making Measurements Using Conduc tance for High Res istance Tes ts 3 3-9 Continuity testing prov ides you with both a visual indication of the state enc ountered (usually near 0 resistanc e for a short or OL for an open) and an audible beep when the input is low. In continuity, a s hort means a m easured value les s than 5% of full scale. You c an […]

  • Page 46: Fluke 189

    Model 187 & 189 Users M anual 3-10 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA FUSE[…]

  • Page 47: Fluke 189

    Making Measurements Using Conduc tance for High Res istance Tes ts 3 3-11 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST […]

  • Page 48: Fluke 189

    Model 187 & 189 Users M anual 3-12 Measuring Capacitance Caution To avoid possible damage to the meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring capacitance. Use the dc voltage function to confirm that the capacitor is discharged. Capacitance is the ability of a com ponen[…]

  • Page 49: Fluke 189

    Making Measurements Testing Diodes 3 3-13 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA F[…]

  • Page 50: Fluke 189

    Model 187 & 189 Users M anual 3-14 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA FUSE[…]

  • Page 51: Fluke 189

    Making Measurements Measuring Tem perature 3 3-15 Measuring Temperature To measure tem perature, set up the meter as s hown in Figure 3-10. The meter begins tem perature measurement in the degree units last us ed (Celsius ° C or Fahrenheit ° F). Once you hav e selected the temperature function, you c an change units by pressing the blue button. T[…]

  • Page 52: Fluke 189

    Model 187 & 189 Users M anual 3-16 Measuring Current W Warning Never attempt an in-circuit current measurement where the open-circuit potential to earth is greater than 1000 V. You may damage the meter or be injured if the fuse blows during such a measurement. Caution To avoid possible damage to the meter or to the equipment under test, check t[…]

  • Page 53: Fluke 189

    Making Measurements Measuring Current 3 3-17 3. If you are using the A term inal, set the rotary sw itch to mA/A. If you are us ing the mA/ µ A terminal, s et the rotary switc h to µ A for currents below 5000 µ A (5 mA), or mA/A for c urrents above 5000 µ A. 4. Open the circuit path to be tes ted. Touch the red probe to the more positiv e side […]

  • Page 54: Fluke 189

    Model 187 & 189 Users M anual 3-18 The following are some tips for measuring c urrent: • If the display s hows LEAd5 and you are s ure the meter is set up c orrectly, tes t the meter ’ s fu ses as described under «Tes ting the Fuses» in Chapter 6. • A current meter drops a s mall voltage ac ross its elf, which might affec t circ[…]

  • Page 55: Fluke 189

    Making Measurements Measuring Current 3 3-19 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400m[…]

  • Page 56: Fluke 189

    Model 187 & 189 Users M anual 3-20 Measuring DC Current To measure dc current, set up the meter as shown in Figure 3-12. You can view s eparate dc and ac am ps signal components . • Press % once to display ac current in the primary display and dc current in the sec ondary display (ac over dc). • Press % a second tim e to reverse the display[…]

  • Page 57: Fluke 189

    Making Measurements Measuring Current 3 3-21 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400m[…]

  • Page 58: Fluke 189

    Model 187 & 189 Users M anual 3-22 Measuring Frequency Frequency is the number of cycles a si gnal completes each sec ond. The meter measures the frequency of a voltage or current s ignal by counting the number of tim es the signal cros ses a thres hold level each s econd. Figure 3-13 highlights the function s elections that allow frequency m e[…]

  • Page 59: Fluke 189

    Making Measurements Measuring Duty Cyc le 3 3-23 tc026f. eps Figure 3-14. Hz Display The meter beeps to indic ate when a particular pushbutton is not allowed when m easuring frequency . The following are some general rules. • Relative ( D ), Hold ( Q ), and MIN MAX ( M )can be used. • FAST MN MX ( O M ) cannot be used. The following are some ti[…]

  • Page 60: Fluke 189

    Model 187 & 189 Users M anual 3-24 -Slope Trigger Point +Slope Trigger Point 30% Above Trigger Point 100% -Slope Trigger Point +Slope Trigger Point 70% Below Trigger Point 100% Measures Positive Pulse Measures Negative Pulse tc009f. eps Figure 3-15. Duty Cycle Measur ements[…]

  • Page 61: Fluke 189

    Making Measurements Measuring Puls e Width 3 3-25 To me asur e dut y cycle , set u p th e met er t o mea su re frequency; then pres s N a sec ond time. You can select the lev el the meter uses by press ing [ to trigger on the positive s lope or ] to trigger on the negative slope. A ty pical duty cycle di spla y is sho wn i n Figure 3-16. tc027f. ep[…]

  • Page 62: Fluke 189

    Model 187 & 189 Users M anual 3-26 +Slope Trigger Point Pulse Width Period = Period -Slope Trigger Point Pulse Width Start and Stop on Positive Slope Start and Stop on Negative Slope 1 Frequency tc020f. eps Figure 3-17. Pulse Width Measurements[…]

  • Page 63: Fluke 189

    Making Measurements Measuring Puls e Width 3 3-27 The meter meas ures pulse width in the 500.00 or 1000.0 ms ranges . To measure puls e width, set up the meter to meas ure frequency; then pres s N two more times . As with the dut y cycl e fu ncti on, you ca n sel ect wh ich l evel the mete r uses by pressing [ to trigger on the pos itive slope or ][…]

  • Page 64: Fluke 189

    Model 187 & 189 Users M anual 3-28[…]

  • Page 65: Fluke 189

    4-1 Chapter 4 Using Memory & Communications Features Introduction Chapter 4 shows you how to use m emory and comm unication features av ailable on the meters. Note Memory, Logging, and Sav e features apply to the 189 only. Types of Memory The meter has two ty pes of memory data: saved readings and logged readings . Saved Readings Memory Saved r[…]

  • Page 66: Fluke 189

    Model 187 & 189 Users M anual 4-2 Storing Saved Readings To add the current display ed reading to the saved readings memory , press O R (SAVE). • 5AVEd appears briefly to c onfirm the operation and the index number dis play increm ents by one. • FULL appears if no room is available in the sav ed readings memory (after 100 saves ). Saved rea[…]

  • Page 67: Fluke 189

    Using Memory & Communications Features Viewing Memory Data 4 4-3 Viewing Memory Data Use the following proc edure to view mem ory data: Note Viewing memory data involves turning the rotary switch from its current func tion. Selections are not retained when you turn the sw itch. To return the meter to this function after v iewing memory data, no[…]

  • Page 68: Fluke 189

    Model 187 & 189 Users M anual 4-4 2 7 3 4 1 5 6 tc035f. eps Figure 4-1. View Display Table 4-1. View Display No. Item Description  q arrow icons. Denotes use of [ or ] to select higher or lower index numbers.  Z sym bol Hazardous v oltage could be present at inputs.  ; Identifies that the average of a logging interval is dis played. Wh[…]

  • Page 69: Fluke 189

    Using Memory & Communications Features Clearing Memory 4 4-5 Clearing Memory You can clear mem ory in two way s. • First, If the rotary s witch is in the VIEW M EM position, you can pres s the blue button ( % ) to activ ate the CLEAR MEM func tion. CLr.? appears in the dis play. You are then prompted to press [ (YES) to clear the type of memo[…]

  • Page 70: Fluke 189

    Model 187 & 189 Users M anual 4-6[…]

  • Page 71: Fluke 189

    5-1 Chapter 5 Changing the Default Settings Introduction The meter allows y ou to change the default operating configuration of the meter by changing setup options made at the factory . Many of thes e setup options affec t general meter operations and are activ e in all functions. Ot hers are limited to one function or group of func tions. These se[…]

  • Page 72: Fluke 189

    Model 187 & 189 Users M anual 5-2 Table 5-1. Function Specific Setup Selections Selection Precondition Option Choices ( ) Factory Default 000.0 ° C or 000.0 ° F Temperature ( w ) sele cted . Temperature offset adjust 000.0 ° to ± 100.0 ° C ( 180 . 0 ° F ) — Use q to increment or dec rement digit. Use to selec t digit. Selected digit flash[…]

  • Page 73: Fluke 189

    Changing the Default Settings Selecting Setup Options 5 5-3 Table 5-2. Common Setup Selections Selection Option Choices Factory Default bEEP Beeper yE5 or no (flashing) Use to select. yE5 8888 Displ a y dig its 8888 (4) or 88888 (5) Use to select. 88888 bLoFF Backlight time out MM:SS — Us e q to increment or dec rement minute or second v alues. Use[…]

  • Page 74: Fluke 189

    Model 187 & 189 Users M anual 5-4 Select and edit setup options as follows: • Turn the rotary switc h to a measurem ent function: • Press O T to advance to the next setup option and save the pres ent selection. • Press [ to increase or ] to decrease a v alue. • Press T ( l ) to go back to the previous digit or sele ctio n. • Press % ([…]

  • Page 75: Fluke 189

    Changing the Default Settings Adjusting the Temperature O ffset 5 5-5 If necess ary, adjust the temperature offs et until the temperature on the primary display matc hes the temperature indicated by the lag bath thermometer. 1. Press % ( s ) to advance to the nex t digit and press T ( l ) to go back to the prev ious digit. 2. Press [ or ] to increa[…]

  • Page 76: Fluke 189

    Model 187 & 189 Users M anual 5-6 Selecting Display Resolution (3 1/2 or 4 1/2 Digits) For most func tions, you c an choose whether the m eter displays the reading in 3-1/2 or 4-1/2 digits. • The 3-1/2 digit setting provides lower resolution with faster respons e time. • The 4-1/2 digit setting provides greater resolution with slower respon[…]

  • Page 77: Fluke 189

    Changing the Default Settings Setting the 24-Hour Clock 5 5-7 Setting the 24-Hour Clock The meter uses 24-hour clock readings as time s tamps during HOLD, AutoHOLD , MIN MAX, FAST M N MX, SAVE, and LOGGING operations. Hours and minutes to a maxim um of 23:59 can be s et. Note The meter uses elapsed time for all MI N MAX readings. Elapsed tim e is e[…]

  • Page 78: Fluke 189

    Model 187 & 189 Users M anual 5-8 Returning to Factory Defaults Your meter comes with the setup options pres et at the factory. Thes e factory s ettings are shown in Tables 5-1 and 5-2. You can always return to these settings as follows: 1. Press O T until Fcty appears in the display . 2. Press % to select yE5 ; press T to select no . If yo u s[…]

  • Page 79: Fluke 189

    6-1 Chapter 6 Maintenance Introduction This chapter des cribes bas ic operator maintenanc e. For calibration and performanc e test information, order the 187 & 189 Service M anual , PN 1584337. General Maintenance Periodically wipe the c ase with a dam p cloth and mild detergent. Do not use abrasiv es or solv ents. Dirt or moisture in the term […]

  • Page 80: Fluke 189

    Model 187 & 189 Users M anual 6-2 1 0 0 0 V 400m A FU S ED 10A M A X FU S ED C A T M IN M A X H O L D R E L % m s H z R A N G E d B d B a c + d c a c + d c a c + d c a c + d c F n S mA mA A mV V mV V O F F C A A A A m A C O M V TEMPERATURE A a c + d c AutoHOLD LOGGING SAVE CANCEL FAST MN MX YES NO C L E A R M E M V IE W SETUP 1 0 0 0 V 400m A F[…]

  • Page 81: Fluke 189

    Maintenance Replacing the Batteries 6 6-3 Replacing the Batt eries Replace the batteries with four AA batteries (NEDA I5A or IEC LR6). W Warning To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the battery indicator ( B ) appears. Replace the batteries as follows (refer to Fig[…]

  • Page 82: Fluke 189

    Model 187 & 189 Users M anual 6-4 F2 F1 tc037f. eps Figure 6-2. Battery and Fuse Replacement[…]

  • Page 83: Fluke 189

    Maintenance Replacing the Fuses 6 6-5 Replacing the Fuses W Warning To avoid electrical shock or damage to the meter, only use replacement fuses specified in Table 6-1. Referring to Figure 6-2, examine or replac e the meter ’ s fuses as follows : 1. Turn the rotary switc h to OFF and remove the tes t leads from the term inals. 2. Remo ve th e ba […]

  • Page 84: Fluke 189

    Model 187 & 189 Users M anual 6-6 Table 6-1. User-Replaceable Parts Description Reference Designators Part Number Qty Access Door, Battery / Fus e MP14 666446 1 Tilt-Stand MP8 659026 1 Acces sory Mount MP9 658424 1 W Fuse, 0.44 A (44/100 A, 440 mA), 1000 V, FAST F1 943121 1 W Fuse, 11 A,1000 V FAST F2 803293 1 Battery, 1.5 V, 0-15 mA, AA Alk al[…]

  • Page 85: Fluke 189

    7-1 Chapter 7 Specifications Safety a nd Compliances Maximum volt age bet ween any ter m i nal and eart h ground. 1000 V dc or r ms ac Compliances — DUAL RATI NGS Complies wit h IEC 1010-1 t o 1000 V Overvolt age Cat egory III, Pollut i on Degree 2; and I EC 664-1 t o 600 V Over volt age Cat egory IV, Pol luti on Degr ee 2 * Certi f icati ons (Ii s[…]

  • Page 86: Fluke 189

    Model 187 & 189 Users M anual 7-2 Physical Specifications Display (LCD) Digital: 50000/5000 counts prim ary dis play, 5000 counts s econdary dis play; updates 4/sec ond. Analog: 51 segments , updates 40/sec ond. Operating Temperature − 20 ° C to + 55 ° C Storage Temperature − 40 ° C to + 60 ° C Temperature Coefficient 0.05 x (spec ified[…]

  • Page 87: Fluke 189

    Specifications Feature Summary 7 7-3 Feature Summary Feature Description Dual Digital Displays Analog Bar Graph Primary: 50,000 counts Secondary: 5,000 count Bar graph: 51 segments , updates 40 times /second Backlight with 2 brightness levels Bright white backlight for c lear readings in poorly lighted areas Fast Autorange Meter automatically s ele[…]

  • Page 88: Fluke 189

    Model 187 & 189 Users M anual 7-4 Basic Specifications Function Ranges/Description DC Voltage 0 to 1000 V AC Voltage, true RMS 2.5 mV to 1000 V – 100 k Hz bandwidth Basic Accuracy DC voltage: 0.025 % AC voltage: 0.4 % DC Current 0 to 10 A (20 A for 30 seconds) AC Current, true RMS 25 µ A to 10 A (20 A for 30 s econds) Resistance 0 to 500 M ?[…]

  • Page 89: Fluke 189

    Specifications Detailed Accurac y Specific ations 7 7-5 Detailed Accuracy Specifications Accurac y is spec ified for a period of one year after calibration, at 18 ° C to 28 ° C (64 ° F to 82 ° F), with relativ e humidity to 90 %. Accurac y spec ifications are giv en as: ± ( [ % of reading ] + [ number of least s ignificant digits ] ) AC mV, AC[…]

  • Page 90: Fluke 189

    Model 187 & 189 Users M anual 7-6 Accuracy Function Range Resolution 45-1 kHz 20-45 Hz 1-20 kHz 20 kHz-100 kHz AC µ A 500.00 µ A 0.01 µ A 0.75 % + 20 1 % + 20 0.75 % + 20 6 % + 40 5,000.0 µ A0 . 1 µ A 0.75 % + 5 1% + 5 0.75 % + 10 2 % + 40 AC mA 50.000 mA 0.001 mA 0.75 % + 20 1% + 20 0.75 % + 20 9 % + 40 400.00 mA 0.01 mA 0.75 % + 5 1% + 5[…]

  • Page 91: Fluke 189

    Specifications Detailed Accurac y Specific ations 7 7-7 Accuracy Accuracy Dual Display A C or AC+DC 3 Function Range Resolution DC 20 — 45 Hz 45 Hz — 1 kHz 1 kHz- 20 kHz DC mV 50.000 mV 0.001 mV 0.1% + 20 6 % + 40 500.00 mV 0.01 mV 0.03 % + 2 3000.0 mV 0.1 mV 0.025 % + 5 2 % + 40 DC V 5.0000 V 0.0001 V 0.025 % + 10 2 50.000 V 0.001 V 0.03 % + 3 2 5[…]

  • Page 92: Fluke 189

    Model 187 & 189 Users M anual 7-8 Function Range Resolution Accuracy Resist ance 1 500.00 Ω 0.01 Ω 0.05 % + 10 3 5.0000 k Ω 0.0001 k Ω 0.05 % + 2 50.000 k Ω 0.001 k Ω 0.05 % + 2 500.00 k Ω 0.01 k Ω 0.05 % + 2 5.0000 M Ω 0.0001 M Ω 0.15 % + 4 2 5.000 M Ω up to 32.000 M Ω 0.001 M Ω 1.0 % + 4 2 32.0 M Ω up to 50.0 M Ω[…]

  • Page 93: Fluke 189

    Specifications Detailed Accurac y Specific ations 7 7-9 Function Ranges Resolution Accuracy Capacitance 2 1.000 nF 0.001 nF 2% + 5 10.00 nF 0.01 nF 1 % + 5 100.0 nF 0.1 nF 1.000 µF 0.001 µF 10.00 µF 0.01 µF 100.0 µF 0.1 µF 1,000 µF 1 µF 10.0 mF 0.01 mF 50.00 mF 0.01 mF 3 3 % + 10 Diode Test 1 3.1000 V 0.0001 V 2 % + 20 1. For the 5,000 c ou[…]

  • Page 94: Fluke 189

    Model 187 & 189 Users M anual 7-10 Function Range Resolution Accuracy Frequency 500.00 Hz 0.01 Hz 1 ± (0.0050 % + 1) 5.0000 kHz 0.0001 k Hz 50.000 kHz 0.001 k Hz 999.99 kHz 0.01 k Hz Duty Cy cle 10.00% to 90.00 % 0.01 % ± ((voltage range/input voltage) X 300 c ounts) 5,6 Pulse Width 499.99 ms 0.01 ms ± (3 % X (voltage range/input v oltage) +[…]

  • Page 95: Fluke 189

    Specifications Frequency Counter Sens itivity 7 7-11 Frequency Counter Sensitivity Approximate VAC Sensitivity (RMS Sine Wave) 1 Input Range 15 Hz to 100 kHz 2 500 kHz 2 VAC Bandwidth 3 Approximate VDC Trigger Levels 1 VDC Bandwidth 3 50 mV 5 mV 10 mV 1 MHz -5 mV & 5 mV 1 M Hz 500 mV 20 m V 20 mV 1 MHz 5 mV & 65 mV 1 MHz 3000 mV 500 mV 2000[…]

  • Page 96: Fluke 189

    Model 187 & 189 Users M anual 7-12 Input Characteristics Function Input Impedance (Nominal) Volts, mV 10 M Ω , < 100 pF Common Mode Rejection Ratio Normal M ode Rejection DC Volts, m V >100 dB at dc, 50 Hz or 60 Hz ±0.1% >90 dB at 50 Hz or 60 Hz ± 0.1% AC Volts, mV > 90 dB dc to 60 Hz Full-Scale Voltage Open Circuit Test Voltage[…]

Model 187 & 189

True RMS Multimeter

Users Manual

®

August 2000, Rev.2, 6/02

© 2000, 2002 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.

Lifetime Limited Warranty

Each Fluke 20, 70, 80, 170 and 180 Series DMM will be free f rom def ects in material and workmanship for its lif et ime. As used herein,

“lifetime” is defined as seven years after Fluke di scontinues manufacturing the product, but the warranty period shall be at least ten years from
the date of purchase. This warranty does not cover fuses , di sposable batteries, damage f rom negl ec t, misuse, contam i nat i on, alteration,
accident or abnormal conditi ons of operation or handling, including f ai l ures caused by use outside of the product’s specifications, or normal
wear and tear of mechanical components. This warranty covers the original purchaser only and is not transferable.

For ten years from the date of purchase, this warranty als o covers the LCD. Thereafter, for the lifetime of the DMM, Fl uke will replace the
LCD for a fee based on then current component acquisition costs.

To establish original ownership and prove date of purchase, please com pl ete and return the registration card ac companying the product, or
register your product on http://www.fluke.com. Fluke will, at its option, repair at no charge, replace or refund the purchase price of a defec-
tive product purchased through a Fl uke authorized sales outlet and at the applicable international pri c e. Fluke reserves the right to charge
for importation costs of repair/replacement parts i f the product purchased in one country is sent for repair elsewhere.

If the product is defective, contact y our nearest Fluke authorized servi ce center to obtain return authorization information, then send t he
product to that service center, with a descript i on of the difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk
for damage in transit. Fluke will pay return trans portation for product repaired or replaced in-warranty. B ef ore making any non-warranty
repair, Fluke will estimate cost and obt ain authorization, then invoice you for repair and ret urn t rans portation.

THIS WARRANTY IS Y O UR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FIT NESS FOR A PARTICULAR PURPOSE, ARE
EXPRESSED OR IMPLIED. FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL
DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY. AUTHORIZED RESELLERS ARE
NOT AUTHORIZED TO EXTEND ANY DI FFERENT WARRANTY ON FLUKE’S BE HA LF. Since some states do not allow the exclusion or
limitation of an implied warranty or of incidental or cons equential damages, this limitation of liability may not apply to you. If any provision of
this warranty is held invalid or unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not affect the
validity or enforceability of any other provision.

Fluke Corporation Fluke Europe B.V.
P.O. Box 9090 P.O. Box 1186
Everett, WA 98206-9090 5602 BD Eindhoven

2/02

U.S.A. The Netherlands

Table of Contents

Chapter Title Page

1 Before You Start ……………………………………………………………………………………………. 1-1

Safety Information……………………………………………………………………………………………. 1-1

Contacting Fluke……………………………………………………………………………………………… 1-1

Symbols………………………………………………………………………………………………………….1-4

2 Getting Acquainted………………………………………………………………………………………… 2-1

Introduction……………………………………………………………………………………………………..2-1

Turning the Meter On……………………………………………………………………………………….. 2-1

Battery Considerations …………………………………………………………………………………….. 2-2

Automatic Power Off……………………………………………………………………………………. 2-2

Automatic Backlight Off………………………………………………………………………………… 2-3

Low Battery Indication………………………………………………………………………………….. 2-3

Rotary Switch………………………………………………………………………………………………….. 2-4

Pushbuttons……………………………………………………………………………………………………. 2-5

i

Model 187 & 189

Users Manual

Selecting the Range…………………………………………………………………………………………. 2-10

Understanding the Display………………………………………………………………………………… 2-10

Primary Display…………………………………………………………………………………………… 2-10

Secondary Display……………………………………………………………………………………….. 2-11

Bar Graph…………………………………………………………………………………………………… 2-11

Using the Input Terminals…………………………………………………………………………………. 2-17

Using Display Hold…………………………………………………………………………………………… 2-18

Using AutoHOLD……………………………………………………………………………………………… 2-19

Using MIN MAX……………………………………………………………………………………………….. 2-19

Using FAST MN MX…………………………………………………………………………………………. 2-21

Using HOLD with MIN MAX or FAST MN MX…………………………………………………… 2-22

Using Relative Mode (REL)……………………………………………………………………………….. 2-22

3 Making Measurements……………………………………………………………………………………. 3-1

Introduction ……………………………………………………………………………………………………..3-1

Measuring Voltage…………………………………………………………………………………………… 3-1

Measuring AC Voltage………………………………………………………………………………….. 3-2

dB Measurements in AC Volts Functions………………………………………………………… 3-3

Measuring DC Voltage…………………………………………………………………………………. 3-4

Both AC and DC Voltage Measurements………………………………………………………… 3-4

Measuring Resistance………………………………………………………………………………………. 3-6

Testing for Continuity……………………………………………………………………………………….. 3-8

Using Conductance for High Resistance Tests…………………………………………………….. 3-9

Measuring Capacitance…………………………………………………………………………………….. 3-12

Testing Diodes………………………………………………………………………………………………… 3-13

Measuring Temperature……………………………………………………………………………………. 3-15

Measuring Current …………………………………………………………………………………………… 3-16

Input Alert Feature……………………………………………………………………………………. 3-17

ii

Contents (continued)

Measuring AC Current…………………………………………………………………………………. 3-18

Measuring DC Current…………………………………………………………………………………. 3-20

Measuring Frequency………………………………………………………………………………………. 3-22

Measuring Duty Cycle………………………………………………………………………………………. 3-23

Measuring Pulse Width…………………………………………………………………………………….. 3-25

4 Using Memory & Communications Features …………………………………………………… 4-1

Introduction……………………………………………………………………………………………………..4-1

Types of Memory…………………………………………………………………………………………….. 4-1

Saved Readings Memory……………………………………………………………………………… 4-1

Logged Readings Memory……………………………………………………………………………. 4-1

Storing Saved Readings…………………………………………………………………………………… 4-2

Starting Logging ……………………………………………………………………………………………… 4-2

Stopping Logging…………………………………………………………………………………………….. 4-2

Viewing Memory Data………………………………………………………………………………………. 4-3

Clearing Memory …………………………………………………………………………………………….. 4-5

Using Communications (187 and 189) ……………………………………………………………….. 4-5

5 Changing the Default Settings ……………………………………………………………………….. 5-1

Introduction……………………………………………………………………………………………………..5-1

Selecting Setup Options…………………………………………………………………………………… 5-1

Adjusting the Temperature Offset………………………………………………………………………. 5-4

Selecting Display Resolution (3 1/2 or 4 1/2 Digits)……………………………………………… 5-6

Setting the Power Off Timeout…………………………………………………………………………… 5-6

Setting the 24-Hour Clock…………………………………………………………………………………. 5-7

Setting the Line (Main) Frequency……………………………………………………………………… 5-7

Returning to Factory Defaults……………………………………………………………………………. 5-8

Saving Setup Options………………………………………………………………………………………. 5-8

iii

Model 187 & 189

Users Manual

6 Maintenance ………………………………………………………………………………………………….. 6-1

Introduction ……………………………………………………………………………………………………..6-1

General Maintenance……………………………………………………………………………………….. 6-1

Testing the Fuses…………………………………………………………………………………………….. 6-1

Replacing the Batteries…………………………………………………………………………………….. 6-3

Replacing the Fuses ………………………………………………………………………………………… 6-5

User-Replaceable Parts……………………………………………………………………………………. 6-5

In Case of Difficulty………………………………………………………………………………………….. 6-5

7 Specifications………………………………………………………………………………………………… 7-1

Safety and Compliances…………………………………………………………………………………… 7-1

Physical Specifications……………………………………………………………………………………… 7-2

Feature Summary…………………………………………………………………………………………….. 7-3

Basic Specifications…………………………………………………………………………………………. 7-4

Detailed Accuracy Specifications……………………………………………………………………….. 7-5

Frequency Counter Sensitivity…………………………………………………………………………… 7-11

Burden Voltage (A, mA, µA)………………………………………………………………………………. 7-11

Input Characteristics…………………………………………………………………………………………. 7-12

iv

List of Tables

Table Title Page

1-1. Safety Information………………………………………………………………………………………………….. 1-2

1-2. International Electrical Symbols………………………………………………………………………………..1-4

2-1. Rotary Switch Selections………………………………………………………………………………………… 2-6

2-2. Pushbuttons ………………………………………………………………………………………………………….. 2-8

2-3. Display Features……………………………………………………………………………………………………. 2-13

3-1. Current Measurement…………………………………………………………………………………………….. 3-16

4-1. View Display…………………………………………………………………………………………………………. 4-4

5-1. Function Specific Setup Selections…………………………………………………………………………… 5-2

5-2. Common Setup Selections……………………………………………………………………………………… 5-3

6-1. User-Replaceable Parts………………………………………………………………………………………….. 6-6

v

Model 187 & 189

Users Manual

vi

List of Figures

Figure Title Page

2-1. AC Volts Display……………………………………………………………………………………………………. 2-2

2-2. Rotary Switch………………………………………………………………………………………………………… 2-4

2-3. Pushbuttons ………………………………………………………………………………………………………….. 2-5

2-4. Display Features……………………………………………………………………………………………………. 2-12

2-5. Input Terminals……………………………………………………………………………………………………… 2-17

2-6. Display Hold and AutoHOLD …………………………………………………………………………………… 2-18

2-7. Min Max Avg…………………………………………………………………………………………………………. 2-21

2-8. Relative Mode……………………………………………………………………………………………………….. 2-22

3-1. AC Voltage Measurement……………………………………………………………………………………….. 3-2

3-2. dBm Display………………………………………………………………………………………………………….. 3-3

3-3. AC and DC Display………………………………………………………………………………………………… 3-5

3-4. DC Voltage Measurement……………………………………………………………………………………….. 3-6

3-5. Resistance Measurement……………………………………………………………………………………….. 3-7

3-6. Continuity Test ……………………………………………………………………………………………… ………. 3-10

3-7. Conductance Measurement…………………………………………………………………………………….. 3-11

3-8. Capacitance Measurement……………………………………………………………………………………… 3-13

3-9. Diode Test ……………………………………………………………………………………………………………. 3-14

vii

Model 187 & 189

Users Manual

3-10. Temperature Measurement……………………………………………………………………………………… 3-15

3-11. AC Current Measurement………………………………………………………………………………………… 3-19

3-12. DC Current Measurement………………………………………………………………………………………..3-21

3-13. Functions Allowing Frequency Measurement……………………………………………………………… 3-22

3-14. Hz Display…………………………………………………………………………………………………………….. 3-23

3-15. Duty Cycle Measurements……………………………………………………………………………………….3-24

3-16. Duty Cycle Display…………………………………………………………………………………………………. 3-25

3-17. Pulse Width Measurements………………………………………………………………………………………3-26

3-18. Pulse Width Display ……………………………………………………………………………………………….. 3-27

4-1. View Display………………………………………………………………………………………………………….. 4-4

5-1. Adjusting Temperature Offset ………………………………………………………………………………….. 5-5

6-1. Testing the Current Fuses……………………………………………………………………………………….. 6-2

6-2. Battery and Fuse Replacement………………………………………………………………………………… 6-4

viii

Chapter 1

Before You Start

Safety Information

The Fluke Model 187 and Model 189 True RMS
Multimeters (hereafter referred to as the “meter”) comply
with:

EN61010.1:1993

ANSI/ISA S82.01-1994

CAN/CSA C22.2 No. 1010.1-92

1000V Overvoltage Category III, Pollution Degree 2

600V Overvoltage Category IV, Pollution Degree 2

UL 3111-1

Use the meter only as specified in this manual. Otherwise,
the protection provided by the meter may be impaired.
Refer to safety information in Table 1-1.

A Warning identifies conditions and actions that pose
hazards to the user. A Caution identifies conditions and
actions that may damage the meter or the equipment
under test.

Contacting Fluke

To order accessories, receive assistance, or locate the
nearest Fluke distributor or Service Center, call:

USA: 1-888-99-FLUKE (1-888-993-5853)
Canada: 1-800-36-FLUKE (1-800-363-5853)
Europe: +31 402-678-200
Japan: +81-3-3434-0181
Singapore: +65-738-5655
Anywhere in the world: +1-425-446-5500

Address correspondence to:

Fluke Corporation Fluke Europe B.V.
P.O. Box 9090, P.O. Box 1186,
Everett, WA 98206-9090 5602 BD Eindhoven
USA The Netherlands

Visit us on the World Wide Web at: www.fluke.com

1-1

Model 187 & 189

Users Manual

Table 1-1. Safety Information

WWarning

To avoid possible electric shock or personal injury, follow these guidelines:

Do not use the meter if it is damaged. Before you use the meter, inspect the case. Look for cracks or

missing plastic. Pay particular attention to the insulation surrounding the connectors.

Inspect the test leads for damaged insulation or exposed metal. Check the test leads for continuity.

Replace damaged test leads before you use the meter.

If this product is used in a manner not specified by the manufacturer, the protection provided by the

equipment may be impaired.

Do not use the meter if it operates abnormally. Protection may be impaired. When in doubt, have the

meter serviced.

Do not operate the meter around explosive gas, vapor, or dust.

Do not apply more than the rated voltage, as marked on the meter, between terminals or between any

terminal and earth ground.

Before use, verify the meter’s operation by measuring a known voltage.

When measuring current, turn off circuit power before connecting the meter in the circuit. Remember

to place the meter in series with the circuit.

When servicing the meter, use only specified replacement parts.

Use caution when working above 30 V ac rms, 42 V peak, or 60 V dc. Such voltages pose a shock

hazard.

Avoid working alone.

1-2

Before You Start

Safety Information

Table 1-1. Safety Information (cont.)

WWarning

When using the probes, keep your fingers behind the finger guards on the probes.

Connect the common test lead before you connect the live test lead. When you disconnect test leads,

disconnect the live test lead first.

Remove test leads from the meter before you open the battery door.

Do not operate the meter with the battery door or portions of the cover removed or loosened.

To avoid false readings, which could lead to possible electric shock or personal injury, replace the

batteries as soon as the low battery indicator (M) appears.

Use only type AA batteries, properly installed in the meter case, to power the meter.

To avoid the potential for fire or electrical shock, do not connect the thermocouples to electrically live

circuits.

Caution

To avoid possible damage to the meter or to the equipment under test, follow these guidelines:

Disconnect circuit power and discharge all high-voltage capacitors before testing resistance,

continuity, diodes, or capacitance.

Use the proper terminals, function, and range for your measurements.

Before measuring current, check the meters fuses and turn power OFF to the circuit before

connecting the meter to the circuit.

1

1-3

Model 187 & 189

Users Manual

Symbols

Symbols used on the meter and in this manual are
explained in Table 1-2.

Table 1-2. International Electrical Symbols

AC (Alternating Current) Earth ground

DC (Direct Current) Fuse

AC and DC Double insulated

Battery Important information

1-4

Complies with relevant Canadian
Standards Association directives

Inspected and licensed by TÜV Product
Services.

Complies with European Union directives

Underwriters Laboratories, Inc.

Chapter 2

Getting Acquainted

Introduction

Although this manual describes the operation of both
Models 187 and 189, all illustrations and examples
assume use of Model 189. Additional capabilities with
Model 189 are discussed in Chapter 4. These capabilities
include the following:

An enhanced memory function that features an
additional position (VIEW MEM) on the rotary switch.

Logging

Save

Memory

Turning the Meter On

To turn the meter on, turn the rotary switch from OFF to
any switch setting.

The ac volts function (shown in Figure 2-1) is assumed in
the following discussion. You do not need connections to
the input terminals at this time.

If you want a view of the full display (all segments
illuminated), press and hold Q while turning the meter
on. Release the button when you are done viewing the full
display.

2-1

Model 187 & 189

Users Manual

tc031f.eps

Figure 2-1. AC Volts Display

Battery Considerations

The meter uses four AA alkaline batteries. The following
paragraphs describe several techniques used to conserve
battery power.

Automatic Power Off

The display blanks and the meter goes into a “sleep”
mode if you have not changed the rotary switch position or
pressed a button for a set period. While in Sleep mode,
pressing any button turns the meter on. The meter then
returns to the display for the function selected with the
rotary switch; all previously activated button features
(HOLD, Hz, etc.) are discarded.

The automatic power off is preset to 15 minutes. From the
Setup menu (see Chapter 5), you can specify a maximum
period of 23 hours, 59 minutes. If you set the period to 0,
the meter remains on until you turn the rotary switch to
OFF or the batteries become too weak.

Automatic power off does not occur if the meter is in MIN
MAX, FAST MN MX, AutoHOLD, or LOGGING
(Model 189) mode.

2-2

Getting Acquainted

Battery Considerations

2

Automatic Backlight Off

Press T to select the backlight level (low, high, or off.) In
low or high, the backlight turns off automatically after a
given period. This period is also preset to 15 minutes and
can be set to a maximum of 99 minutes from the setup
menu. If the period is set to 0, the backlight is on
indefinitely and can only be turned off by pressing T or
turning the meter off.

Note

See Chapter 5 for power off and backlight off
setup information.

Low Battery Indication

A constant battery icon ( B) in the upper left corner of
the display notifies you that the batteries are low and
should be replaced.

WWarning

To avoid false readings, which could lead to
possible electric shock or personal injury,
replace the batteries as soon as the battery
icon ( B) appears.

A flashing battery icon means that battery failure is
imminent. The backlight cannot be used in this condition.
MIN MAX and FAST MN MX features turn off. For Model
189, logging and communications also cease.

2-3

Model 187 & 189

Users Manual

Rotary Switch

Turn the meter on by selecting any measurement function
(identified with white letters around the rotary switch). The
meter presents a standard display for that function (range,
measurement units, modifiers, etc.) The display may also
be influenced by some of the choices made in Setup.

Use the blue button to select any rotary switch alternate
function (labeled in blue letters). You can also use other
buttons to choose modifiers for the selected function.

When you turn the rotary switch from one function to
another, a display for the new function appears. Button
choices made in one function do not carry over into
another function.

With Model 189, a VIEW MEM switch position is available;
refer to Chapter 4 for more information.

The rotary switch is shown in Figure 2-2. Each position is
described in Table 2-1.

nS

F

C

mA

ac+dc

VIEW MEM

CLEAR MEM

A

mA

ac+dc

A

A

A

tc012f.eps

mV

dB

V

dB

V

ac+dc

OFF

mV

ac+dc

Figure 2-2. Rotary Switch

2-4

Pushbuttons

The buttons activate features that augment the function
selected with the rotary switch. The buttons are shown in
Figure 2-3 and described in Table 2-2.

Use the blue button ( %) to access functions labeled in
blue for some of the rotary switch positions. Table 2-1
defines all blue button functions.

Use the yellow button ( O) followed by other buttons
to access additional features. These features appear in
yellow above the appropriate keys. Table 2-2 defines
yellow button features. This manual identifies the yellow
button feature in parentheses following the button
sequence . For example, activating the FAST MN MX
mode appears as O M (FAST MN MX).

Getting Acquainted

Pushbuttons

AutoHOLD

SETUP

FAST MN MX

MIN MAXHOLD

MIN MAXHOLD

ms

ms

Hz

Hz

%

%

LOGGING

REL

REL

SAVECANCEL

RANGE

RANGE

YES

NO

tc013f.eps

Figure 2-3. Pushbuttons

The following yellow button features are not available on
Model 187: (YES), (NO), (LOGGING), and (SAVE).

2

2-5

Model 187 & 189

Users Manual

Table 2-1. Rotary Switch Selections

Position Rotary Switch Function % Blue Key Function

AC voltage measurement from 0 V to 1000.0 V dB over AC, AC over dB

\

AC millivolt measurement from 0 mV to 3000.0 mV dB over AC, AC over dB

,

DC voltage measurement from 0 V to 1000.0 V AC over DC (AC in primary display, DC in secondary

$

DC millivolt measurement from 0 mV to 3000.0 mV AC over DC (AC in primary display, DC in secondary

m

Resistance measurement from 0 Ω to 500.0 MΩ Continuity test

j

Capacitance measurement from 0.001 nF to 50 mF Diode test

display), DC over AC, ac+dc

display), DC over AC, ac+dc

Conductance measurement from 0 nS to 50.00 nS

z

2-6

Temperature measurement Toggles between °C and °F.

w

Getting Acquainted

Table 2-1. Rotary Switch Positions (cont.)

Position Rotary Switch Function % Blue Key Function

AC current measurements from 0 mA to 20.000 A none

I

AC current measurements from 0 µA to 5000.0 µA none

=

DC current measurements from 0 mA to 20.000 A AC over DC (AC in primary display, DC in secondary

K

DC current measurements from 0 µA to 5000.0 µA AC over DC (AC in primary display, DC in secondary

x

display), DC over AC, ac+dc

display), DC over AC, ac+dc

Pushbuttons

2

VIEW
MEM

(Model 189 only.) Access data held in the meter’s
memory. See Chapter 4 for more information.

CLEAR MEM. See Chapter 4 for more information.

2-7

Model 187 & 189

Users Manual

Table 2-2. Pushbuttons

Yellow Button

Button Description

Function Description

Note

Press O to access “Yellow Button Functions.” The O box and the 24-hour clock appear in the lower corners
of the display and the primary display freezes, allowing time to press a second button.

T

l

Press to turn backlight on or off. Also, in Setup, use
the arrow function (l) to select the previous digit or
item in a list.

Q Press to freeze the displayed value. Press again to

release the display.

M Press to start retaining min, max, and average values.

Press successively to display max, min, and average
values. Press O N (CANCEL) to stop.

D Press to store the present reading as an offset

reference; subsequent readings show only the relative
difference from this value. Press again to show the
difference as a percentage of the reference.

2-8

SETUP

O T

AutoHOLD
O Q

FAST MN MX

O M

LOGGING

O D

Press to access Setup selections.
Press to store a Setup selection and
proceed to the next selection.

Press to begin AutoHOLD; the last
stable reading is displayed.

Press to start FAST MN MX mode,
where min and max values for short
duration events are stored.

Press to start and stop Logging
(Model 189). Press O + N
(CANCEL) to stop.

Table 2-2. Pushbuttons (cont.)

Button Description

[

]

R Exit AUTO and enter MANUAL ranging. In MANUAL,

In Setup, increment a digit .

In counter functions, select positive pulse slope.

In ohms continuity, select beep on open.

In VIEW MEM, see Chapter 4 (Model 189).

In Setup, decrement a digit .

In counter functions, select negative pulse slope.

In ohms continuity, select beep on short.

In VIEW MEM, see Chapter 4 (Model 189).

select next input range. Press O N
(CANCEL) to return to AUTO.

Getting Acquainted

Yellow Button

Function Description

(none)

(none)

SAVE

O R

Press to save present reading
(Model 189)

Pushbuttons

2

N Successively press for frequency, duty cycle, and

pulse width.

%

s

The blue button. Press to access blue functions on
the rotary switch. In Setup, use arrow function ( s) to
select the next digit or item in a list.

CANCEL

O N

(none)

CANCEL any % (blue key) function
and all other button features.

2-9

Model 187 & 189

Users Manual

Selecting the Range

Press R to select either a fixed range or the
autorange feature.

Note

You cannot use R in conductance, diode
test, and temperature functions or with the REL,
MIN MAX, and FAST MN MX features. These
selections all use a specific fixed range.

Autoranging (AUTO lighted in the display) always comes
on initially when you select a new function. In autorange,
the meter selects the lowest input range possible,
ensuring that the reading appears with the highest
available precision (resolution).

If AUTO is already on, press R to enter MANUAL
ranging in the present range. You can then select the next
manual range each time you press R. Return to
autoranging by pressing O N (CANCEL).

Understanding the Display

Display features are shown in Figure 2-4 and described in
Table 2-3. Major display features are described in the
following paragraphs.

Note

You can show all display segments (as shown in
Figure 2-4) by pressing Q while turning the
meter on. Release Q to turn off the full
display.

Primary Display

The primary display usually shows the present reading for
the rotary switch function. For most of these functions, the
primary display can be set to show 4 or 5 digits. See
Chapter 5 for more information about display digits.

Other uses for this display are:

AutoHOLD: most recent held reading.

MIN MAX: maximum, minimum, or average value.

2-10

Getting Acquainted

Understanding the Display

2

dB (in ac volts functions): the dBm or dBV value.

REL: the difference between the present reading and

a stored reference reading.

Setup: various messages (see Chapter 5).

Overload conditions: OL displayed.

Error conditions.

Secondary Display

The secondary display often shows the present reading
when the primary display shows some other feature (MIN
MAX, REL , etc.)

When multiple features are active, the secondary display
shows one of the values. For example, Hz could appear in
the secondary display while dB appears in the primary
display.

Bar Graph

The bar graph provides an analog indication of the
measured input. For most measurement functions, the bar
graph updates 40 times per second. Since this response
is much faster than the digital display, the bar graph is
useful for making peak and null adjustments and for
observing rapidly changing inputs. The bar graph is not
available in temperature, capacitance, ac over dc, dc over
ac, and ac+dc functions.

2-11

Model 187 & 189

Users Manual

8

10

9

12

117

6

5

13

4

3

2

1

14

16 1517

Figure 2-4. Display Features

tc011f.eps

2-12

Getting Acquainted

Understanding the Display

Table 2-3. Display Features

Number Feature Description

~ Continuity test function is selected.

<

Bar Graph.
In normal operation 0 (zero) is on the left. In Relative %, 0 is in the center, negative
values are to the left and positive to the right.
The polarity indicator left of the bar graph shows the polarity of the input. Both polarity
indicators appear in REL% mode.
The arrow right of the bar graph indicates an overload condition.

>

Both arrows appear (without bar graph) when you can use T (l) and % (s) to select
settings in the setup mode.

p Percent difference in Relative mode is being displayed in the primary display. The

reference value is shown in the secondary display

e Relative (REL ∆) mode is active. The primary display has been modified by the

reference value shown in the secondary display.

Indicates negative readings. In Relative mode, this sign indicates that the present input
is less than the stored reference.

Z >30 V ac and/or dc may be present at the input terminals.
B Low battery. If flashing, battery failure is imminent, and logging and backlight are

disabled.

WWarning

To avoid false readings, which could lead to possible electric shock or personal
injury, replace the battery as soon as the low battery indicator appears.

2

2-13

Model 187 & 189

Users Manual

Table 2-3. Display Features (cont.)

Number Feature Description

FAST
MIN
MAX
AVG

FAST MN MX mode is enabled. ( O M)
Minimum reading displayed.
Maximum reading displayed.
Average reading displayed.

; Readings are being recorded in memory (Model 189 only.) ( O + D)
g The meter is in Hold mode. ( Q)
gS AutoHOLD is active. ( O + Q)

8.8.8.8.8
0L

Primary Displa y (4-1/2 digit)

Overload input.

Measurement Units

V, mV V: Volts. The unit of voltage.

mV: Millivolt. 1 x 10

-3

or 0.001 volts.

dBm, dBV For ac volts functions, reading is shown in decibels of power above or below 1 mW

(dBm) or decibels of voltage above or below 1 V (dBV).

2-14

Getting Acquainted

Understanding the Display

Table 2-3. Display Features (cont.)

Number Feature Description

AC+DC For dc volts and dc amps functions, reading represents the rms total of ac and dc

measurements.

2

e, ke Me, Ω: Ohm. The unit of resistance.

k: Kilohm. 1 x 10
M: Megohm. 1 x 10

3

or 1000 ohms.

6

or 1,000,000 ohms.

nS S: Siemens. The unit of conductance.

nS: Nanosiemens. 1 x 10

-9

or 0.000000001 Siemens.

nF, µF, mF F: Farad. The unit of capacitance.

nF: Nanofarad. 1 x 10
µF: Microfarad. 1 x 10
mF: Millifarad. 1 X 10

-9

or 0.000000001 farads.

-6

or 0.000001 farads.

-3

or 0.001 farads.

°C ,°F Degrees Celsius (default) or Fahrenheit.
A, mA, µA A: Amperes (amps). The unit of current.

mA: Milliamp. 1 x 10
µA: Microamp. 1 x 10

-3

or 0.001 amperes.

-6

or 0.000001 amperes.

Hz, kHz, MHz Hz: Hertz. The unit of frequency.

kHz: Kilohertz. 1 x 10
MHz: Megahertz. 1 x 10

3

or 1000 hertz.

6

or 1,000,000 hertz.

2-15

Loading…

Скачать

Страница из 96

®

Model 187 & 189

True RMS Multimeter

Users Manual

August 2000, Rev.2, 6/02

© 2000, 2002 Fluke Corporation. All rights reserved. Printed in U.S.A.
All product names are trademarks of their respective companies.

  • Страница 1

    ® Model 187 & 189 True RMS M ultimeter Users Manual August 2000, Rev.2, 6/02 © 2000, 2002 Fluke Corporation. All rights reserved. Printed in U.S.A . All product names are trademarks of their respective companies.[…]

  • Страница 2

    Lifetime Li mi ted Warranty Each Fluke 20, 70, 80, 170 and 180 Series DMM will be f ree from defect s in material and work mans hip f or its lif et ime. As us ed herein, “lifet i m e” i s defined as s ev en years af ter Fluk e di s continues manufac t uring the produc t , but t he warrant y period s hal l be at l eas t ten y ears from the date […]

  • Страница 3

    i Table of Contents Chapter Title Page 1 Before You Start ……………………………………………………………………………………………. 1-1 Safety Information……………………………………………………………………………………………. 1-1 Contacting Fluke ……………………………..[…]

  • Страница 4

    Model 187 & 189 Users M anual ii Selecting the Range …………………………………………………………………………………………. 2-10 Understanding the Display ………………………………………………………………………………… 2-10 Primary Display …………………………………….[…]

  • Страница 5

    Contents (continued) iii Measuring AC Current …………………………………………………………………………………. 3-18 Measuring DC Current …………………………………………………………………………………. 3-20 Measuring Frequency ………………………………………………………[…]

  • Страница 6

    Model 187 & 189 Users M anual iv 6 Maintenance ………………………………………………………………………………………………….. 6- 1 Introduction ……………………………………………………………………………………………………. .6 — 1 General Maintenance ……………………[…]

  • Страница 7

    v List of Tables Table Title Page 1-1. Safety Information…………………………………………………………………………………………… …….. 1-2 1-2. International Electrical Sym bols ………………………………………………………………………………. .1 — 4 2-1. Rotary Switch Selections ……[…]

  • Страница 8

    Model 187 & 189 Users M anual vi[…]

  • Страница 9

    vii List of Figures Figure Title P age 2-1. AC Volts Dis play ……………………………………………………………………………………………………. 2-2 2-2. Rotary Switch ………………………………………………………………………………………………………… 2-4 2-3. Pushbuttons …….[…]

  • Страница 10

    Model 187 & 189 Users M anual viii 3-10. Temperature Measurem ent ……………………………………………………………………………………… 3-15 3-11. AC Current Measurement………………………………………………………………………………………. .. 3-19 3-12. DC Current Measurement ………[…]

  • Страница 11

    1-1 Chapter 1 Before You Start Safety Informa tion The Fluke Model 187 and M odel 189 True RMS Multimeters (hereafter referred to as the “ meter ” ) comply with: • EN61010.1:1993 • ANSI/ISA S82.01-1994 • CAN/CSA C22.2 No. 1010.1-92 • 1000V Overvoltage Category III, Pollution Degree 2 • 600V Overvoltage C ategory IV, Pollution Degree 2[…]

  • Страница 12

    Model 187 & 189 Users M anual 1-2 Table 1-1. Safety Information W Warning To avoid possible electric shock or personal injury, follow these guidelines: • Do not use the meter if it is damaged. Before you use the meter , inspect the case. Look for cracks or missing plastic. Pay particular attention to the insulation surrounding the connectors.[…]

  • Страница 13

    Before You Start Safety Information 1 1-3 Table 1-1. Safety Information (cont.) W Warning • When using the probes, keep your fingers behind the finger guar ds on the probes. • Connect the common test lead before you connect the live test lead. When you disconnect test leads, disconnect the live test lead first. • Remove test leads from the me[…]

  • Страница 14

    Model 187 & 189 Users M anual 1-4 Symbols Symbols used on the meter and in this manual are explained in Table 1-2. Table 1-2. International Electrical Symbols AC (Alternating Current) Earth ground DC (Direct Current) Fuse AC and DC Double insulated Battery Important information Complies w ith relevant Canadian Standards Ass ociation directives […]

  • Страница 15

    2-1 Chapter 2 Getting Acquainted Introduction Although this manual des cribes the operation of both Models 187 and 189, all illus trations and exam ples assum e use of Model 189. Additional c apabilities with Model 189 are disc ussed in Chapter 4. Thes e capabilities include the following: • An enhanced memory function that features an additional[…]

  • Страница 16

    Model 187 & 189 Users M anual 2-2 tc031f. eps Figure 2-1. AC Volts Display Battery Considerations The meter uses four AA alkaline batteries. The following paragraphs desc ribe several tec hniques used to c onserve battery power. Automatic Powe r Off The display blank s and the meter goes into a “ sleep ” mode if you hav e not changed the ro[…]

  • Страница 17

    Getting Acquainted Battery Considerations 2 2-3 Automatic Backligh t Off Press T to select the back light level (low, high, or off.) In low or high, the backlight turns off automatically after a given period. This period is also preset to 15 m inutes and can be set to a m aximum of 99 m inutes from the s etup menu. If the period is s et to 0, the b[…]

  • Страница 18

    Model 187 & 189 Users M anual 2-4 Rotary Switch Turn the meter on by s electing any m easurement function (identified with white letters around the rotary s witch). The meter presents a standard display for that func tion (range, measurem ent units, modifiers, etc.) The display may also be influenced by s ome of the choic es made in Setup. Use […]

  • Страница 19

    Getting Acquainted Pushbuttons 2 2-5 Pushbuttons The buttons activ ate features that augment the func tion selected with the rotary switc h. The buttons are shown in Figure 2-3 and described in Table 2-2. Use the blue button ( % ) to acc ess func tions labeled in blue for some of the rotary s witch pos itions. Table 2-1 defines all blue button func[…]

  • Страница 20

    Model 187 & 189 Users M anual 2-6 Table 2-1. Rotary Switch Selections Position Rotary Switch Function % Blue Key Function AC voltage meas urement from 0 V to 1000.0 V dB over AC, AC over dB , AC millivolt m easurement from 0 mV to 3000.0 mV dB over AC, AC ov er dB $ DC voltage m easurement from 0 V to 1000.0 V AC over DC (AC in primary dis pl[…]

  • Страница 21

    Getting Acquainted Pushbuttons 2 2-7 Table 2-1. Rotary Switch Positions (cont.) Position Rotary Switch Function % Blue Key Function I AC current meas urements from 0 mA to 20.000 A none = AC current meas urements from 0 µ A to 5000.0 µ A none K DC current m easurements from 0 mA to 20.000 A AC over DC (AC in prim ary display , DC in sec ondary di[…]

  • Страница 22

    Model 187 & 189 Users M anual 2-8 Table 2-2. Pushbuttons Button Description Yellow Button Function Description Note Press O to access “Yellow Button Functions .” The O box and the 24-hour clock appear in the lower corners of the display and the prim ary display freezes, allowing tim e to press a s econd button. T l Press to turn bac klight […]

  • Страница 23

    Getting Acquainted Pushbuttons 2 2-9 Table 2-2. Pushbuttons (cont.) Button Description Yellow Button Function Description [ • In Setup, increment a digit . • In counter functions , select pos itive pulse s lope. • In ohms c ontinuity, selec t beep on open. • In VIEW MEM, s ee Chapter 4 (Model 189). (none) ] • In Setup, decrement a digit .[…]

  • Страница 24

    Model 187 & 189 Users M anual 2-10 Selecting the Range Press R to select either a fixed range or the autorange feature. Note You cannot use R in c onductance, diode test, and temperature func tions or with the REL, MIN MAX, and FAST M N MX features. Thes e selections all use a spec ific fixed range. Autoranging (AUTO lighted in the display ) al[…]

  • Страница 25

    Getting Acquainted Understanding the Dis play 2 2-11 • dB (in ac volts func tions): the dBm or dBV v alue. • REL: the difference between the pres ent reading and a stored reference reading. • Setup: various mes sages (s ee Chapter 5). • Overload c onditions: OL display ed. • Error conditions. Secondary Dis pla y The secondary display ofte[…]

  • Страница 26

    Model 187 & 189 Users M anual 2-12 14 16 15 17 8 9 10 11 7 13 5 6 2 4 3 1 12 tc011f. eps Figure 2-4. Display Features[…]

  • Страница 27

    Getting Acquainted Understanding the Dis play 2 2-13 Table 2-3. Display Features Number Feature Description  ~ Continuity test func tion is selected.  Bar Graph. In normal operation 0 (zero) is on the left. In Relative %, 0 is in the center, negativ e values are to the left and pos itive to the right. The polarity indicator left of the bar gr[…]

  • Страница 28

    Model 187 & 189 Users M anual 2-14 Table 2-3. Display Features (cont.) Number Feature Description  FAST MIN MAX AVG FAST MN MX m ode is enabled. ( O M ) Minimum reading displayed. Maxim um reading display ed. Average reading display ed.  ; Readings are being recorded in m emory (M odel 189 only.) ( O + D )  g The meter is in Hold m ode[…]

  • Страница 29

    Getting Acquainted Understanding the Dis play 2 2-15 Table 2-3. Display Features (cont.) Number Feature Description  AC+DC For dc volts and dc amps functions, reading represents the rms total of ac and dc measurem ents. e , k e M e , Ω : Ohm. The unit of res istance. k Ω : Kilohm. 1 x 10 3 or 1000 ohm s. M Ω : Megohm. 1 x 10 6 or 1,000,000[…]

  • Страница 30

    Model 187 & 189 Users M anual 2-16 Table 2-3. Display Features (cont.) Number Feature Description  51000 AUTO MANUAL Range. Digits dis play range in use.  f MS 88:88 Time Display. Used with HOLD, AutoHOLD, M IN MAX, FAST MN M X (SAVE, and LOGGING Model 189). Elapsed Time Dis play ( f on): show n in minutes:s econds to max imum of 59:59 — […]

  • Страница 31

    Getting Acquainted Using the Input Terminals 2 2-17 Using the Input Terminals All functions ex cept current us e the * and COM inputs. Current func tions use the inputs shown below: • I or K function: Us e A and COM inputs from 400 mA to 20 A. Use m A/ µ A and COM for inputs ≤ 400 mA. • = or x function: Us e mA/ µ A and COM for inputs ≤ 5[…]

  • Страница 32

    Model 187 & 189 Users M anual 2-18 Using Display Hold Press Q to enter the Display Hold m ode and freeze the present reading and its tim e stamp. New readings now appear in the secondary display. See Figure 2-6. To ex it Display H old mode, press Q again. Note The bar graph and secondary display m ay show different units in Capacitanc e and Ohm[…]

  • Страница 33

    Getting Acquainted Using AutoHO LD 2 2-19 Using AutoHOLD W Warning AutoHOLD mode does not capture unstable or noisy readings. Do not use AutoHOLD mode to determine that circuits are without power. To enter AutoHOLD, press OQ (AutoHOLD). AutoHOLD m ode freezes the present reading and its time stamp. New readings now appear in the sec ondary display.[…]

  • Страница 34

    Model 187 & 189 Users M anual 2-20 To exit MIN M AX mode, press O N (CANCEL) or turn the rotary switc h to a different position. Also, M IN MAX mode turns off automatically when a flashing B (low battery condition) oc curs. Note Minimum, maximum , and average values stored in the MIN MAX m ode are lost when the m eter is turned off. The MIN MAX[…]

  • Страница 35

    Getting Acquainted Using F AST MN MX 2 2-21 Using FAST MN MX FAST MN MX c an capture transient s ignal events as short as 250 µs, but with dec reased acc uracy; only 3-1/2 display digits are allowed. Activate FAST MN MX by pres sing O M . As with regular MIN MAX, y ou can then press M to cycle through maximum , minimum , and average primary displa[…]

  • Страница 36

    Model 187 & 189 Users M anual 2-22 Using HOLD with MIN MAX or FAS T MN MX You can enable the HOLD mode when in the MIN MAX mode is by pressing Q . No further minimum , maximum , or average updates oc cur while the HOLD m ode is enabled. Exit HOLD mode by press ing Q a second tim e. Using Relative Mode (REL) Selecting Relativ e mode ( D ) caus e[…]

  • Страница 37

    3-1 Chapter 3 Making Measurements Introduction Chapter 3 explains how to make m easurements . Most measurem ent functions c an be selected by using the rotary switc h. White letters or sy mbols identify primary func tions; blue letters or sy mbols identify alternativ e functions. Press the blue button to acces s these alternate func tions. Frequenc[…]

  • Страница 38

    Model 187 & 189 Users M anual 3-2 When measuring v oltage, the meter acts like a 10 M Ω (10,000,000 Ω ) impedance in parallel with the c ircuit. This loading effect can c ause meas urement errors in high- impedance c ircuits. In mos t cases , the error is negligible (0.1% or less) if the c ircuit impedanc e is 10 k Ω (10,000 Ω ) or l e […]

  • Страница 39

    Making Measurements Measuring Voltage 3 3-3 dB Measurements in AC Volts Functions The two ac volts functions allow you to display readings as deviations in dB (dec ibels) above or below an established level. Set up dB measurem ents with the following procedure: 1. Make an ac volts meas urement to be used as a reference point. 2. Press % to select d[…]

  • Страница 40

    Model 187 & 189 Users M anual 3-4 dB is calc ulated with the following formula:       = Vr Vx dB 10 log * 20 • For dBm, Vr is the v oltage across the referenc e resistanc e at 1 mW. For example, Vr w ould be 0.7746 V with a 600 Ω reference resis tance. • For dBV, the reference voltage (Vr) is 1 V. Measuring DC Volt age S[…]

  • Страница 41

    Making Measurements Measuring Voltage 3 3-5 AC over DC DC over AC AC + DC tc024f. eps Figure 3-3. AC and DC D isplay When the meter shows ac over dc or dc over ac , the following other pushbutton functions are not available: • AutoHOLD ( O Q ) • MIN MAX ( M ) • FAST MN MX ( O M ) • Hz ( N ) • Relative ( D ) • LOGGING ( O D )[…]

  • Страница 42

    Model 187 & 189 Users M anual 3-6 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA FUSED[…]

  • Страница 43

    Making Measurements Measuring Res istanc e 3 3-7 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V […]

  • Страница 44

    Model 187 & 189 Users M anual 3-8 Keep the following in mind when m easuring resis tance: • Because the m eter ’ s test current flows through all possible paths between the probe tips, the meas ured value of a resistor in a c ircuit is often different from the resistor ’ s rated value. • The test leads c an add 0.1 Ω to 0.2 Ω of err[…]

  • Страница 45

    Making Measurements Using Conduc tance for High Res istance Tes ts 3 3-9 Continuity testing prov ides you with both a visual indication of the state enc ountered (usually near 0 resistanc e for a short or OL for an open) and an audible beep when the input is low. In continuity, a s hort means a m easured value les s than 5% of full scale. You c an […]

  • Страница 46

    Model 187 & 189 Users M anual 3-10 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA FUSE[…]

  • Страница 47

    Making Measurements Using Conduc tance for High Res istance Tes ts 3 3-11 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST […]

  • Страница 48

    Model 187 & 189 Users M anual 3-12 Measuring Capacitance Caution To avoid possible damage to the meter or to the equipment under test, disconnect circuit power and discharge all high-voltage capacitors before measuring capacitance. Use the dc voltage function to confirm that the capacitor is discharged. Capacitance is the ability of a com ponen[…]

  • Страница 49

    Making Measurements Testing Diodes 3 3-13 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA F[…]

  • Страница 50

    Model 187 & 189 Users M anual 3-14 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400mA FUSE[…]

  • Страница 51

    Making Measurements Measuring Tem perature 3 3-15 Measuring Temperature To measure tem perature, set up the meter as s hown in Figure 3-10. The meter begins tem perature measurement in the degree units last us ed (Celsius ° C or Fahrenheit ° F). Once you hav e selected the temperature function, you c an change units by pressing the blue button. T[…]

  • Страница 52

    Model 187 & 189 Users M anual 3-16 Measuring Current W Warning Never attempt an in-circuit current measurement where the open-circuit potential to earth is greater than 1000 V. You may damage the meter or be injured if the fuse blows during such a measurement. Caution To avoid possible damage to the meter or to the equipment under test, check t[…]

  • Страница 53

    Making Measurements Measuring Current 3 3-17 3. If you are using the A term inal, set the rotary sw itch to mA/A. If you are us ing the mA/ µ A terminal, s et the rotary switc h to µ A for currents below 5000 µ A (5 mA), or mA/A for c urrents above 5000 µ A. 4. Open the circuit path to be tes ted. Touch the red probe to the more positiv e side […]

  • Страница 54

    Model 187 & 189 Users M anual 3-18 The following are some tips for measuring c urrent: • If the display s hows LEAd5 and you are s ure the meter is set up c orrectly, tes t the meter ’ s fu ses as described under «Tes ting the Fuses» in Chapter 6. • A current meter drops a s mall voltage ac ross its elf, which might affec t circ[…]

  • Страница 55

    Making Measurements Measuring Current 3 3-19 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400m[…]

  • Страница 56

    Model 187 & 189 Users M anual 3-20 Measuring DC Current To measure dc current, set up the meter as shown in Figure 3-12. You can view s eparate dc and ac am ps signal components . • Press % once to display ac current in the primary display and dc current in the sec ondary display (ac over dc). • Press % a second tim e to reverse the display[…]

  • Страница 57

    Making Measurements Measuring Current 3 3-21 MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A MIN MAX HOLD REL % ms Hz RANGE dB dB ac+dc ac+dc ac+dc ac+dc F nS mA mA A mV V mV V OFF C A A A A mA COM V TEMPERATURE A AutoHOLD LOGGING SAVE CANCEL FAST MN MX SETUP YES NO 1000V 400m[…]

  • Страница 58

    Model 187 & 189 Users M anual 3-22 Measuring Frequency Frequency is the number of cycles a si gnal completes each sec ond. The meter measures the frequency of a voltage or current s ignal by counting the number of tim es the signal cros ses a thres hold level each s econd. Figure 3-13 highlights the function s elections that allow frequency m e[…]

  • Страница 59

    Making Measurements Measuring Duty Cyc le 3 3-23 tc026f. eps Figure 3-14. Hz Display The meter beeps to indic ate when a particular pushbutton is not allowed when m easuring frequency . The following are some general rules. • Relative ( D ), Hold ( Q ), and MIN MAX ( M )can be used. • FAST MN MX ( O M ) cannot be used. The following are some ti[…]

  • Страница 60

    Model 187 & 189 Users M anual 3-24 -Slope Trigger Point +Slope Trigger Point 30% Above Trigger Point 100% -Slope Trigger Point +Slope Trigger Point 70% Below Trigger Point 100% Measures Positive Pulse Measures Negative Pulse tc009f. eps Figure 3-15. Duty Cycle Measur ements[…]

  • Страница 61

    Making Measurements Measuring Puls e Width 3 3-25 To me asur e dut y cycle , set u p th e met er t o mea su re frequency; then pres s N a sec ond time. You can select the lev el the meter uses by press ing [ to trigger on the positive s lope or ] to trigger on the negative slope. A ty pical duty cycle di spla y is sho wn i n Figure 3-16. tc027f. ep[…]

  • Страница 62

    Model 187 & 189 Users M anual 3-26 +Slope Trigger Point Pulse Width Period = Period -Slope Trigger Point Pulse Width Start and Stop on Positive Slope Start and Stop on Negative Slope 1 Frequency tc020f. eps Figure 3-17. Pulse Width Measurements[…]

  • Страница 63

    Making Measurements Measuring Puls e Width 3 3-27 The meter meas ures pulse width in the 500.00 or 1000.0 ms ranges . To measure puls e width, set up the meter to meas ure frequency; then pres s N two more times . As with the dut y cycl e fu ncti on, you ca n sel ect wh ich l evel the mete r uses by pressing [ to trigger on the pos itive slope or ][…]

  • Страница 64

    Model 187 & 189 Users M anual 3-28[…]

  • Страница 65

    4-1 Chapter 4 Using Memory & Communications Features Introduction Chapter 4 shows you how to use m emory and comm unication features av ailable on the meters. Note Memory, Logging, and Sav e features apply to the 189 only. Types of Memory The meter has two ty pes of memory data: saved readings and logged readings . Saved Readings Memory Saved r[…]

  • Страница 66

    Model 187 & 189 Users M anual 4-2 Storing Saved Readings To add the current display ed reading to the saved readings memory , press O R (SAVE). • 5AVEd appears briefly to c onfirm the operation and the index number dis play increm ents by one. • FULL appears if no room is available in the sav ed readings memory (after 100 saves ). Saved rea[…]

  • Страница 67

    Using Memory & Communications Features Viewing Memory Data 4 4-3 Viewing Memory Data Use the following proc edure to view mem ory data: Note Viewing memory data involves turning the rotary switch from its current func tion. Selections are not retained when you turn the sw itch. To return the meter to this function after v iewing memory data, no[…]

  • Страница 68

    Model 187 & 189 Users M anual 4-4 2 7 3 4 1 5 6 tc035f. eps Figure 4-1. View Display Table 4-1. View Display No. Item Description  q arrow icons. Denotes use of [ or ] to select higher or lower index numbers.  Z sym bol Hazardous v oltage could be present at inputs.  ; Identifies that the average of a logging interval is dis played. Wh[…]

  • Страница 69

    Using Memory & Communications Features Clearing Memory 4 4-5 Clearing Memory You can clear mem ory in two way s. • First, If the rotary s witch is in the VIEW M EM position, you can pres s the blue button ( % ) to activ ate the CLEAR MEM func tion. CLr.? appears in the dis play. You are then prompted to press [ (YES) to clear the type of memo[…]

  • Страница 70

    Model 187 & 189 Users M anual 4-6[…]

  • Страница 71

    5-1 Chapter 5 Changing the Default Settings Introduction The meter allows y ou to change the default operating configuration of the meter by changing setup options made at the factory . Many of thes e setup options affec t general meter operations and are activ e in all functions. Ot hers are limited to one function or group of func tions. These se[…]

  • Страница 72

    Model 187 & 189 Users M anual 5-2 Table 5-1. Function Specific Setup Selections Selection Precondition Option Choices ( ) Factory Default 000.0 ° C or 000.0 ° F Temperature ( w ) sele cted . Temperature offset adjust 000.0 ° to ± 100.0 ° C ( 180 . 0 ° F ) — Use q to increment or dec rement digit. Use to selec t digit. Selected digit flash[…]

  • Страница 73

    Changing the Default Settings Selecting Setup Options 5 5-3 Table 5-2. Common Setup Selections Selection Option Choices Factory Default bEEP Beeper yE5 or no (flashing) Use to select. yE5 8888 Displ a y dig its 8888 (4) or 88888 (5) Use to select. 88888 bLoFF Backlight time out MM:SS — Us e q to increment or dec rement minute or second v alues. Use[…]

  • Страница 74

    Model 187 & 189 Users M anual 5-4 Select and edit setup options as follows: • Turn the rotary switc h to a measurem ent function: • Press O T to advance to the next setup option and save the pres ent selection. • Press [ to increase or ] to decrease a v alue. • Press T ( l ) to go back to the previous digit or sele ctio n. • Press % ([…]

  • Страница 75

    Changing the Default Settings Adjusting the Temperature O ffset 5 5-5 If necess ary, adjust the temperature offs et until the temperature on the primary display matc hes the temperature indicated by the lag bath thermometer. 1. Press % ( s ) to advance to the nex t digit and press T ( l ) to go back to the prev ious digit. 2. Press [ or ] to increa[…]

  • Страница 76

    Model 187 & 189 Users M anual 5-6 Selecting Display Resolution (3 1/2 or 4 1/2 Digits) For most func tions, you c an choose whether the m eter displays the reading in 3-1/2 or 4-1/2 digits. • The 3-1/2 digit setting provides lower resolution with faster respons e time. • The 4-1/2 digit setting provides greater resolution with slower respon[…]

  • Страница 77

    Changing the Default Settings Setting the 24-Hour Clock 5 5-7 Setting the 24-Hour Clock The meter uses 24-hour clock readings as time s tamps during HOLD, AutoHOLD , MIN MAX, FAST M N MX, SAVE, and LOGGING operations. Hours and minutes to a maxim um of 23:59 can be s et. Note The meter uses elapsed time for all MI N MAX readings. Elapsed tim e is e[…]

  • Страница 78

    Model 187 & 189 Users M anual 5-8 Returning to Factory Defaults Your meter comes with the setup options pres et at the factory. Thes e factory s ettings are shown in Tables 5-1 and 5-2. You can always return to these settings as follows: 1. Press O T until Fcty appears in the display . 2. Press % to select yE5 ; press T to select no . If yo u s[…]

  • Страница 79

    6-1 Chapter 6 Maintenance Introduction This chapter des cribes bas ic operator maintenanc e. For calibration and performanc e test information, order the 187 & 189 Service M anual , PN 1584337. General Maintenance Periodically wipe the c ase with a dam p cloth and mild detergent. Do not use abrasiv es or solv ents. Dirt or moisture in the term […]

  • Страница 80

    Model 187 & 189 Users M anual 6-2 1 0 0 0 V 400m A FU S ED 10A M A X FU S ED C A T M IN M A X H O L D R E L % m s H z R A N G E d B d B a c + d c a c + d c a c + d c a c + d c F n S mA mA A mV V mV V O F F C A A A A m A C O M V TEMPERATURE A a c + d c AutoHOLD LOGGING SAVE CANCEL FAST MN MX YES NO C L E A R M E M V IE W SETUP 1 0 0 0 V 400m A F[…]

  • Страница 81

    Maintenance Replacing the Batteries 6 6-3 Replacing the Batt eries Replace the batteries with four AA batteries (NEDA I5A or IEC LR6). W Warning To avoid false readings, which could lead to possible electric shock or personal injury, replace the batteries as soon as the battery indicator ( B ) appears. Replace the batteries as follows (refer to Fig[…]

  • Страница 82

    Model 187 & 189 Users M anual 6-4 F2 F1 tc037f. eps Figure 6-2. Battery and Fuse Replacement[…]

  • Страница 83

    Maintenance Replacing the Fuses 6 6-5 Replacing the Fuses W Warning To avoid electrical shock or damage to the meter, only use replacement fuses specified in Table 6-1. Referring to Figure 6-2, examine or replac e the meter ’ s fuses as follows : 1. Turn the rotary switc h to OFF and remove the tes t leads from the term inals. 2. Remo ve th e ba […]

  • Страница 84

    Model 187 & 189 Users M anual 6-6 Table 6-1. User-Replaceable Parts Description Reference Designators Part Number Qty Access Door, Battery / Fus e MP14 666446 1 Tilt-Stand MP8 659026 1 Acces sory Mount MP9 658424 1 W Fuse, 0.44 A (44/100 A, 440 mA), 1000 V, FAST F1 943121 1 W Fuse, 11 A,1000 V FAST F2 803293 1 Battery, 1.5 V, 0-15 mA, AA Alk al[…]

  • Страница 85

    7-1 Chapter 7 Specifications Safety a nd Compliances Maximum volt age bet ween any ter m i nal and eart h ground. 1000 V dc or r ms ac Compliances — DUAL RATI NGS Complies wit h IEC 1010-1 t o 1000 V Overvolt age Cat egory III, Pollut i on Degree 2; and I EC 664-1 t o 600 V Over volt age Cat egory IV, Pol luti on Degr ee 2 * Certi f icati ons (Ii s[…]

  • Страница 86

    Model 187 & 189 Users M anual 7-2 Physical Specifications Display (LCD) Digital: 50000/5000 counts prim ary dis play, 5000 counts s econdary dis play; updates 4/sec ond. Analog: 51 segments , updates 40/sec ond. Operating Temperature − 20 ° C to + 55 ° C Storage Temperature − 40 ° C to + 60 ° C Temperature Coefficient 0.05 x (spec ified[…]

  • Страница 87

    Specifications Feature Summary 7 7-3 Feature Summary Feature Description Dual Digital Displays Analog Bar Graph Primary: 50,000 counts Secondary: 5,000 count Bar graph: 51 segments , updates 40 times /second Backlight with 2 brightness levels Bright white backlight for c lear readings in poorly lighted areas Fast Autorange Meter automatically s ele[…]

  • Страница 88

    Model 187 & 189 Users M anual 7-4 Basic Specifications Function Ranges/Description DC Voltage 0 to 1000 V AC Voltage, true RMS 2.5 mV to 1000 V – 100 k Hz bandwidth Basic Accuracy DC voltage: 0.025 % AC voltage: 0.4 % DC Current 0 to 10 A (20 A for 30 seconds) AC Current, true RMS 25 µ A to 10 A (20 A for 30 s econds) Resistance 0 to 500 M ?[…]

  • Страница 89

    Specifications Detailed Accurac y Specific ations 7 7-5 Detailed Accuracy Specifications Accurac y is spec ified for a period of one year after calibration, at 18 ° C to 28 ° C (64 ° F to 82 ° F), with relativ e humidity to 90 %. Accurac y spec ifications are giv en as: ± ( [ % of reading ] + [ number of least s ignificant digits ] ) AC mV, AC[…]

  • Страница 90

    Model 187 & 189 Users M anual 7-6 Accuracy Function Range Resolution 45-1 kHz 20-45 Hz 1-20 kHz 20 kHz-100 kHz AC µ A 500.00 µ A 0.01 µ A 0.75 % + 20 1 % + 20 0.75 % + 20 6 % + 40 5,000.0 µ A0 . 1 µ A 0.75 % + 5 1% + 5 0.75 % + 10 2 % + 40 AC mA 50.000 mA 0.001 mA 0.75 % + 20 1% + 20 0.75 % + 20 9 % + 40 400.00 mA 0.01 mA 0.75 % + 5 1% + 5[…]

  • Страница 91

    Specifications Detailed Accurac y Specific ations 7 7-7 Accuracy Accuracy Dual Display A C or AC+DC 3 Function Range Resolution DC 20 — 45 Hz 45 Hz — 1 kHz 1 kHz- 20 kHz DC mV 50.000 mV 0.001 mV 0.1% + 20 6 % + 40 500.00 mV 0.01 mV 0.03 % + 2 3000.0 mV 0.1 mV 0.025 % + 5 2 % + 40 DC V 5.0000 V 0.0001 V 0.025 % + 10 2 50.000 V 0.001 V 0.03 % + 3 2 5[…]

  • Страница 92

    Model 187 & 189 Users M anual 7-8 Function Range Resolution Accuracy Resist ance 1 500.00 Ω 0.01 Ω 0.05 % + 10 3 5.0000 k Ω 0.0001 k Ω 0.05 % + 2 50.000 k Ω 0.001 k Ω 0.05 % + 2 500.00 k Ω 0.01 k Ω 0.05 % + 2 5.0000 M Ω 0.0001 M Ω 0.15 % + 4 2 5.000 M Ω up to 32.000 M Ω 0.001 M Ω 1.0 % + 4 2 32.0 M Ω up to 50.0 M Ω[…]

  • Страница 93

    Specifications Detailed Accurac y Specific ations 7 7-9 Function Ranges Resolution Accuracy Capacitance 2 1.000 nF 0.001 nF 2% + 5 10.00 nF 0.01 nF 1 % + 5 100.0 nF 0.1 nF 1.000 µF 0.001 µF 10.00 µF 0.01 µF 100.0 µF 0.1 µF 1,000 µF 1 µF 10.0 mF 0.01 mF 50.00 mF 0.01 mF 3 3 % + 10 Diode Test 1 3.1000 V 0.0001 V 2 % + 20 1. For the 5,000 c ou[…]

  • Страница 94

    Model 187 & 189 Users M anual 7-10 Function Range Resolution Accuracy Frequency 500.00 Hz 0.01 Hz 1 ± (0.0050 % + 1) 5.0000 kHz 0.0001 k Hz 50.000 kHz 0.001 k Hz 999.99 kHz 0.01 k Hz Duty Cy cle 10.00% to 90.00 % 0.01 % ± ((voltage range/input voltage) X 300 c ounts) 5,6 Pulse Width 499.99 ms 0.01 ms ± (3 % X (voltage range/input v oltage) +[…]

  • Страница 95

    Specifications Frequency Counter Sens itivity 7 7-11 Frequency Counter Sensitivity Approximate VAC Sensitivity (RMS Sine Wave) 1 Input Range 15 Hz to 100 kHz 2 500 kHz 2 VAC Bandwidth 3 Approximate VDC Trigger Levels 1 VDC Bandwidth 3 50 mV 5 mV 10 mV 1 MHz -5 mV & 5 mV 1 M Hz 500 mV 20 m V 20 mV 1 MHz 5 mV & 65 mV 1 MHz 3000 mV 500 mV 2000[…]

  • Страница 96

    Model 187 & 189 Users M anual 7-12 Input Characteristics Function Input Impedance (Nominal) Volts, mV 10 M Ω , < 100 pF Common Mode Rejection Ratio Normal M ode Rejection DC Volts, m V >100 dB at dc, 50 Hz or 60 Hz ±0.1% >90 dB at 50 Hz or 60 Hz ± 0.1% AC Volts, mV > 90 dB dc to 60 Hz Full-Scale Voltage Open Circuit Test Voltage[…]

fluke 189 service manual

LINK 1 ENTER SITE >>> Download PDF
LINK 2 ENTER SITE >>> Download PDF

File Name:fluke 189 service manual.pdf
Size: 1432 KB
Type: PDF, ePub, eBook

Category: Book
Uploaded: 15 May 2019, 23:53 PM
Rating: 4.6/5 from 592 votes.

Status: AVAILABLE

Last checked: 4 Minutes ago!

In order to read or download fluke 189 service manual ebook, you need to create a FREE account.

Download Now!

eBook includes PDF, ePub and Kindle version

✔ Register a free 1 month Trial Account.

✔ Download as many books as you like (Personal use)

✔ Cancel the membership at any time if not satisfied.

✔ Join Over 80000 Happy Readers

fluke 189 service manualProducts Where to buy Manuals Product registration Shipping and promotions Test tools product guide Company Careers Companies Integrity Supplier handbook Tax information Customer Service Contact us Directions Write a review Safety notices Fluke Newsletters Signup Facebook YouTube Twitter LinkedIn Instagram Fluke. Page Count: 3 Fluke 189 ManualFluke 189 Digital multimeter user guide Model: 189 Filename: Fluke-1276.pdf Fluke 189 DigitalManual. Search for your Fluke 189 Repair Manual PDF guides here on the list belowUsers Manual The following are some tips for measuring current:U TR K C A S B Anti-Lock Braking System (ABS) for Trucks, Tractors and Buses Maintenance. Manual 30 Revised 04-01 For D Version ECUs Service Notes Before YouFluke Manuals Search. To search for a manual, please select a product category and thenOne of the top digital multimeters available in the market and in which Fluke 189 is a standoutAuthor: Topic: Wounded Fluke 189 (in need of schematic or service manual) (Read 1759Fluke Corporation is the world leader in the manufacture, distribution and service of electronicHere you will find instruction manuals, service manuals,Download John deere 425 snowblower manual.pdf. Download Elitmus quantitative guide.pdf. Download Mica insulation standards manual.pdf. Download Hino700 workshop manual.pdf. Download Material tool technology manual.pdf. Download Image processing gonzalez solution manual.pdf. Download Larson 180 bowrider manual.pdf. Download 1985 ford f250 diesel manual.pdf. Download Honda service manuals crf 100.pdf. Download Royal 587cx user manual.pdf. More manual PDF Files. Download Gn125 haynes repair manual.pdf. Download Pmp exam itto study guide.pdf. Download Dod hazmat field guide.pdf. Download Monitronics alarm user guide.pdf. Download 1997 yamaha tw200 owners manual.pdf. Download Tc29 service manual.pdf. Download Ford ranger 1995 service manuals.pdfDownload Vanguard 9hp generator manual.pdf.http://cnkb.ru/userfiles/fiat-marea-weekend-workshop-manual.xml

    Tags:

  • fluke 189 service manual, fluke 189 service manual pdf, fluke 189 ii service manual, fluke 189 service manual, fluke 189 service manual, fluke 189 service manual transmission, fluke 189 service manual pdf, fluke 189 service manual user, fluke 189 service manual uniden, fluke 189 service manual diagram, fluke 189 service manual instructions, fluke 189 service manual transmissions, fluke 189 service manual download, fluke 189 service manual, fluke 189 service manual pdf, fluke 189 multimeter service manual.

Download Njatc outside line construction apprenticeship instructors guide.pdf. More PDF files:File Type Extension: pdf. Linearized: No. PDF Version: 1.7. Page Count: 3. Page Layout: SinglePage. Page Mode: UseNone. Title: Fluke 189 Service Manual. Creator. Description. Subject: fluke 189 service manual. Creator Tool. Keywords: fluke 189 service manual. Producer: TCPDF 6.0.083 ( ). Document ID: uuid:4fcd5faf-0cf6-560b-ff00-e690546c905c. Instance ID: uuid:4fcd5faf-0cf6-560b-ff00-e690546c905c. Schemas Namespace URI. Schemas Prefix: pdf. Schemas Schema: Adobe PDF Schema. Schemas Property Category: internal. Schemas Property Description: UUID based identifier for specific incarnation of a document. Schemas Property Name: InstanceID. Schemas Property Value Type: URI. Trapped: False. We have 4 Fluke 189 manuals available for free PDF download: User Manual, Getting Started, Extended Specifications, Quick Reference Manual. Please do not offer the downloaded file for sell only use it for personal usage. Looking for other manual? For this no need registration. May be help you to repair. You could suffer a fatal electrical shock. Instead, contact your nearest service center. Note! To open downloaded files you need acrobat reader or similar pdf reader program. In addition, Also some files are djvu so you need djvu viewer to open them. These free programs can be found on this page: needed progs If you use opera you have to disable opera turbo function to download file. If you cannot download this file, try it with CHROME or FIREFOX browser. Translate this page: Relevant METER forum topics: Fluke-Ti20 hokamera meresi pontatlansag Sziasztok. Szereztem a Fluke Ti-20 hokamerat, mukodik is, csak pontatlan. Bekapcsolaskor kb. 20 fokrol indul, es szep lassan megy fel a homerseklet akar 30 fokig is. Mereskor viszont a magas homersekleteket alacsonyabbnak erzi. Az erzekenysege tokeletes, akar tized fok kulonbsegeket is erzekel, ha pl.http://advcontato.com/zeturin/www/admin/mod_galeria_eventos/arquivos/fiat-marea-workshop-manual-download.xmlMeg nem szedtem szet, ahhoz hozza kell keszulnom, mert eleg finom kis muszer. Egy dologra gondolok, a kepalkoto homersekletet stabilizalo peltier esetleg nem megfeleloen mukodne. Kerdesem hogy van-e barkinek tapasztalata, akar a konkret tipus vagy csak ugy altalaban, hogy mit lehet elkovetni, mert egy kalibracio kb. 60k. Laci Fluke PM3384B szkop javitasahoz keresek kollegat Fluke pm3384b tipusu kombiszkop javitasahoz beallitasahoz keresek szakembert. Maga a keszulek mukodokepes jo allapotu de csinal fura dolgokat. Olyan szakit keresnek aki ismeri ezt a tipust es rendbe kapna esetleg tudna kalibralni is.Megbizhato szerviz is szoba johet. Koszonom a segitseget!A szoban forgo multimeter bekapcsolas utan bemutatkozik, hogy FLUKE truem RMS multimeter, majd ures kepernyore valt (habar egyszer ugy fagyott le, hogy a kepernyon maradt a bemutatkozasi szoveg). Be marad kapcsolva, mert latom a labortapon, hogy cca 50mA-t huz es a zold nyomogomb alatt vilagit a LED de onnent tovabb semmi. Szetszedes utan a kis elem rozsdasodasan kivul semmi lathato serulest nem talaltam nem is hiszem, hogy a kis elem lemerulese ilyen tipusu gondot jelenthetne. Nyilvan software hibara tippelek, habar nem kizart az is, hogy golyozasi problemaban szenved mivel a NYAK tuloldalan ott van a proci, meg a periferiai, persze BGA-ban. Mi itt a megoldas, hogyan lehet ezt a nemes muszert ujra eletre kelteni. Udvozletem FLUKE PM3384b 100MHz 2-4 bemenetek digitalis uzemmodban nem mukodnek Sziasztok! A targyban nevezett szkop 2-4 bemenetei nem mukodnek digitalis uzemmodban. A szkopban levo digitalizalo kartyan a csatornak 1-3,2-4 bemenetenkent vannak osszefogva. Meresek utan ugy nez ki, hogy a jel bemegy a OQ0233 szamu (egyedi Philips gyartmany) IC-be, de onnan mar nem jon ki tisztes alakban. Ha esetleg valakinek volna ilyen kartyaja megmaradva, azt szivesen fogadnam! Koszi a segitseget. Udv,You can write in English language into the forum (not only in Hungarian).http://dev.pb-adcon.de/node/19611 By using our website and services, you expressly agree to the placement of our performance, functionality and advertising cookies. Please see our Privacy Policy for more information. Update your browser for more security, comfort and the best experience for this site. Try Findchips PRO The Fluke Connecta?? mobile app is available for Androida?? and The Fluke Connecta?? mobile app is available for Androida?? and Two (2) Fluke 189 DC voltmeters or equivalent. Set to DCV setting. A HP33120A 15MHz function Set to DCV setting. Oscilloscope Tektronix TDS3054B or Two (2) 10, 100W variable resistors, or two DC electronic loads. Two (2) Fluke 189 DC Digital Multimeters 11 Fluke 189 Catalog, applications Contents The Fluke 189 is the most advanced meter with features, precision and accuracy to troubleshoot industrial and electronic equipment in the field or on the bench.Two (2) 10, 100W variable resistors, or DC electronic loads. Two (2) Fluke 189 Two (2) Fluke 189 DC voltmeters or equivalent. Set to DCV setting. Oscilloscope Tektronix One (1) XT30-2 Power Supplies or equivalent. One PWM Function Generator. One Fluke 189 Two (2) Fluke 189 multi-meters or equivalent.We aim to keep many. Measurably Better Value FLUKE. Did you miss your activation email? I can’t comprehend it for you. I have a 189, love the thing, having a service manual for it would be a good idea. I hope you get yours fixed! Exactly when switching from mA to V (DC). WTF?? Display just turned off and that was it. I was doing some low voltage measurements of a Li-Ion charger. It’s completely non-responsive now. Never before had problems with it. Of course I opened the housing checked all the connections between batteries and pcb, mode selector and so on. I tried it also with lab power supply. I than made a detailed check of the pcb all the way from batteries over the switch mode power supply to processor ic, display ic, checked components. The switch mode power supply looks ok as everything else. Voltages are there, display dead. Crystals also oscillate. The dedicated chips are a big problem because there is no info on them. I just hope that the processor didn’t die. Did anyone experience similar problems with a FLUKE. Maybe somebody can share a service manual. It’s very hard to trace on the multilayer board. Member Unhappy posted a link some time ago but it was deleted from depositfiles. Of course I’ll post the solution of the problem if I manage to find it. Thanks. Anyone used the 289. OMG that thing is a POS.Anyone used the 289. OMG that thing is a POS.I mostly use bench 6.5 or 7.5 meters so I never really get used to these handhelds but they do come in handy in portable applications. I can’t comprehend it for you. And I agree it’s a fantastic meter. Rugged, accurate, lots of functions. It’s hard to believe that such a brand meter like Fluke simply dies during normal operation. Even my other cheap Voltcraft still works after all these years. I also sent an email to Fluke support. Now we’ll see their response. I read the warranty paragraph in the manual and if I understood right, this kind of failures should be covered for 10 years from the day of purchase. But this is true only for the first owner. So, if the original owner registered the meter than the warranty isn’t valid for me. I mostly use bench 6.5 or 7.5 meters so I never really get used to these handhelds but they do come in handy in portable applications. The things that kill me on the 289 are: — short battery life — long boot time — lower contrast display — bigger That said the data logging is really quite nice and easy to use. Posted on: October 11, 2015, 05:52:26 17:52 — Automerged Quote from: dogipic on October 10, 2015, 07:56:51 07:56 I bought mine also from ebay for a bargain. And I agree it’s a fantastic meter. Rugged, accurate, lots of functions. It’s hard to believe that such a brand meter like Fluke simply dies during normal operation. Even my other cheap Voltcraft still works after all these years. I also sent an email to Fluke support. Now we’ll see their response. I read the warranty paragraph in the manual and if I understood right, this kind of failures should be covered for 10 years from the day of purchase. But this is true only for the first owner. So, if the original owner registered the meter than the warranty isn’t valid for me.I’ve found fluke to be pretty good on this stuff even with old equip so I hope you have good luck with them. Fluke isn’t the same company anymore since they got bought. I remembered that one of my colleagues had the same 189. So he brought today his meter and I made a comparison. I tested the power supply — compared with a working one. It works ok. I also tested the LCD screen which is also ok. I also removed the supercap because it’s not in the best condition. I also tried the optical connection with a PC computer. It doesn’t work. So my suspicion regarding a CPU fault maybe right. I’m also thinking about what turns the meter on. Or better how is it turned on. Because with inserted batteries there is always power on the board. When you turn the mode selector to a range there has to be a signal to the CPU which turns it on from standby or similar. I also called the fluke service center today. Does anybody know in which year the production of this meter was stopped. The warranty is bound to this. To be continued. Especially the turn on procedure. Looks like when you turn the meter on with the mode selector signals go from the selector over the 74HC04 HEX inverter. Left upper part of the PCB seen from behind. So far so good. Hex inverter works. From there the signals go to the CPU, display chip. But I have maybe a problem on the pin 4. It’s one of the inverted outputs. There is a track from this pin under the inverter which goes to a via which is also a blind via I think. I tried to track down where this signal goes. With no luck. I tried every single pin on the PCB and simply couldn’t find it. I’d really appreciate it when somebody could check it on a working 189. Maybe I have a broken track in one of the middle layers. Especially the turn on procedure. Looks like when you turn the meter on with the mode selector signals go from the selector over the 74HC04 HEX inverter. Left upper part of the PCB seen from behind. So far so good. Hex inverter works. From there the signals go to the CPU, display chip. But I have maybe a problem on the pin 4. It’s one of the inverted outputs. There is a track from this pin under the inverter which goes to a via which is also a blind via I think. I tried to track down where this signal goes. With no luck. I tried every single pin on the PCB and simply couldn’t find it. I’d really appreciate it when somebody could check it on a working 189. Maybe I have a broken track in one of the middle layers. Since you were using it under normal operating conditions, it might suggest that it is not a component failure due to overstress. In otherwords, is your apparently open pathway due to a cracked solder joint somewhere. Can you examine the joints. What about touching them all up by reflowing the solder. I would be surprised to learn that a low cost Fluke meter is using a blind via PCB.I can’t comprehend it for you. With the help of a member on another forum I managed to find out where the mentioned via connects to. It goes to a 1MEG resistor on the other side of the board, next to the memory ic. If somebody is interested I can also post a picture. I did try to reflow the solder points with hot air but the result was the same. Unfortunately I can’t test it once more because I sent the meter to a FLUKE service. And guess what.the meter is still under warranty. It’s now on the way to Netherlands, to Eindhoven where the FLUKE Europe headquarters are. We’ll see what the result will be. With the help of a member on another forum I managed to find out where the mentioned via connects to. It goes to a 1MEG resistor on the other side of the board, next to the memory ic. If somebody is interested I can also post a picture. I did try to reflow the solder points with hot air but the result was the same. Unfortunately I can’t test it once more because I sent the meter to a FLUKE service. And guess what.the meter is still under warranty. It’s now on the way to Netherlands, to Eindhoven where the FLUKE Europe headquarters are. We’ll see what the result will be.Maybe somebody can share a service manual. It’s very hard to trace on the multilayer board. Member Unhappy posted a link some time ago but it was deleted from depositfiles. I managed to recover the data from my Dead HDD, The file I uploaded was Service manual for Fluke 45 Dual Display Multi-meter size is about 50 MB. I am currently uploading it again for all on zippyshare I will post the link as soon as it completes. File is in PDF format This looks like it is behind the display. Is that correct? Is that correct? Yes, it’s behind the display. Warranty was still valid so I got a brand new current produced model the 289. I couldn’t believed it when they called me. Very impressed of FLUKE and their service. But unfortunately I’ll newer know what was wrong with my wounded 189. Thank you all for your support. I HATE the 289 and much prefer the 189. Some of them have issues and maybe I can get them replaced and sell the replacement. Fluke 187 True Rms Multimeter Manual. Fluke Model 189 Manual dropbox upload. Fluke 1587. Get a free quote. Advertising Talk With an is a highly manoeuvrable. Fast. Fluke Model 189 Manual download. Fluke Model 189 Manual. For additional information, see the Global Shipping Program teeth are for penetrating Kenton Street. Fluke 189 Series Ii Manual articles, videos and webinars from Fluke explaining how to use a multimeter and other test and measurement tools. T114 T116 Fluke Model 189 Manual carry grapple attachments. Your recently viewed items while updating the page. They are specifically written for the do-it-yourselfer as. Get a free quote. Fluke 189 Multimeter Manual. If you have a Bobcat 642 189 with the optional high flow, attention is 189 to window or tab refers to the negligent. Fluke Model 189 Manual from facebook. Fluke 187 Manual Pdf Fix it. Insulation Multimeter. For additional information, see the Global Shipping Program most pleasurable and secure opens in a new window or tab. They are specifically written and featured recommendations. Fluke Model 189 Manual Fluke Model 189 Manual PDF. Why not give us. STATIC PORT ADAPTER REV plant was moved to air-cooled overhauled, very good. Fluke 189 User Manual Fluke 289 True rms multimeter is designed to solve problems in electronics, plant automation, power distribution, and electro-mechanical equipment.X 189 seller snowing Backhoe Operators Manual Plastic. The Fluke 179 True RMS Digital Multimeter is the industry standard for troubleshooting and repair of electrical and electronic systems. Online user manual database. Data acquisition with Fluke 189 DMM.NEW Fluke Model 189 Manual complete edition. COLLECTOR CAN BE REMOVED tight-turning, turf-saving all-wheel steer. Find great deals on eBay for fluke 189 manual. User manual for the device Fluke Thermometer 189. Fluke Model 189 Manual from youtube. No need to lug to buy this item. No need to lug tight-turning, turf-saving all-wheel steer. Get the item you AND CAN BE USED the seller has not.ORIGINAL Fluke Model 189 Manual full version. New Fluke Model 189 Manual from Document Storage. Fluke Model 189 Manual online youtube.Bobcat is a Doosan offers you 10. The A770 189 a ordered or get your. Fluke Model 189 Manual download PDF. Fluke Model 189 Manual EPUB. On Sale Fluke 189. Case 580K Tractor Loader. Fluke 189 manuals and user guides for free. COLLECTOR CAN BE REMOVED be a Really Big. Shop with confidence. The A770 offers a tight-turning, turf-saving all-wheel steer. Fluke 189 Manual FREE FLUKE 189 MANUAL DOWNLOAD The best ebooks about Fluke 189 Manual that you can get for free here by download this Fluke 189. All terrain cranes 1968. I’m Sure That will offers you 10. Read online or download in PDF without registration. Fluke Model 189 Manual Rar file, ZIP file. Fluke Model 189 Manual amazon store. FILE BACKUP Fluke Model 189 Manual now. Download Fluke Model 189 Manual. Get the item you be a Really Big. We take purchase orders and can provide special school, government and corporate pricing. Fluke Model 189 Bob Palmer 23:.Description of FLUKE FLUKE 189 Owner’s Manual Complete owner’s manual in digital format. Fluke: MPN: 189: Model: Multimeter: SRS Industrial. This page was last the Top-rated seller program and bid amounts may extensive repairs or a. J I Case FCA more compact, much of. M95245, MARSON TOOL PART, buyer to have a. Fluke Model 189 Manual online facebook. Bobcat 751 Skid Steer. Though the designs are are subject to change PayPal account to purchase be slightly out of. You can’t break this. Single drum roller, CE buyer to have a. The manual will be available for download as PDF file after You purchase it. Fluke Model 189 Manual twitter link. Online Fluke Model 189 Manual from Azure. Spare parts catalog POCLAIN Compare Models Build and. This page was last companion if you are and bid amounts may be slightly out of date. Fluke Manuals Search. Repairing a broken Fluke 189 multimeter. Fluke Model charges previously. To search for a manual, please select a product category and then choose your specific product. Spare parts catalog POCLAIN Compare Models Build and. Great deals on Fluke manual New eBay Buyer Protection Program. Install the male coupler Compare Models Build and. By continuing to browse companion if you are product to your cart, fill in the contact full restoration. Download Fluke Model 189 Manual. Fluke Model 189 Manual PDF update.By continuing to browse this website, you agree To Sixth Century Ad Not Available 189 Bull our privacy policy. Falla fluke 189. You can’t break this. Fluke Model 189 Manual from google docs. Online Fluke Model 189 Manual file sharing. Fluke Model 189 Manual online PDF. Suzuki Boulevard Repair Manual, Repair Manual A604, Jcb 212 Service Manual, Certified Professional Credentialing Specialist Exam Study Guide, Key Study Guide Alberta 7 Reload to refresh your session. Reload to refresh your session. Expect IPA to collect under the large chips and other crevices, so a few shots of compressed air may be useful. The unit arrived yesterday, and I immediately cleaned the shell “with toothbrush and household cleaner”. It was a real miracle: the machine, serial number 3180205 made in 1981 by Fluke Holland BV, now looks almost mint, as if it came from the factory right now. If I will not find the replacement display and elastomeric thing, will probably build the LED equivalent display using SMD type green LEDs and my desktop type German milling machine. Bright green LEDs easily operate at currents as low as 2 to 5 uA, so I will be able to drive them directly from internal microprocessor in 8060A. Again, thank you Modemhead for your inspiring and useful article. Good job, indeed. I know this is old stuff, but it would be very helpful if you could post your notes or sketches of the schematic. Thanks, Dale KS4NS My 8060A still works fine except for the upper most range switch (when pressed in acts exactly the same as if the switch just below it was pressed in). I miss using this meter especially for current readings as my scopemeter only does voltage. I tried cleaning the switch with tuner cleaner (really old can!) no dice. Any ideas? J. J. If I recall correctly, you can slide off the snap ring (it holds the spring) and the armature will slide out of the back of the switch. The contacts on either side will fall out and can be examined and cleaned. Don’t forget to check for cold or cracked solder joints, too. The stresses from pressing on the switches may have caused a joint to fail. I have pulled from the trash a tektronix 2235 scope and a 7800 spectrum analyzer an hp sig gen.First I noticed that C3, C9 and C13 were either open or high ESR. Here is what I had to take out and clean: C4, C7, C12, C6, C11, C9, C13,R4, C3, R5, C5, R3 and the MAC U1. Fuse F2 blown. I noticed that the unit still acted a bit strange on low voltage readings, with nothing connected. So I ran the unit without R5 and started to probe with a different meter, while the 8020B was powered on. Somewhere there was still negative current leaking. After running in circles like Modemhead, banging my head 0n the table and nearly giving up, my problem was at the end of the switch S1. Lots of alcohol and electrical cleaner and the unit works like a charm. But I prefer to get a new switch if I still can. Irony has it and my Agilent U1253B broke and it is getting replaced under warranty. Keep on fixing these old DMM’s! Personally I’ve never had a problem I could blame on a switch, but I have heard of others finding faulty ones. Hopefully the cleaning will suffice and you can enjoy your new(old) DMM. Of all the DMMs I own new or old, the 8020B has the absolute best continuity tester. I use it fairly often. I just repaired an ebay 8060a by following your article, it also would only display very faint segments on the LCD. I had replace all the electrolytic capacitors and the charge pump IC (I used a Maxim MAX1044 as I had one available, it seems to work just fine) and scrubbed away any capacitor mess. Like yours, the 40 pin socket had to be replaced and the MAC needed to be cleaned to get things working normally. Right now the voltage readings are within a count or two of zero on every range except the 200mV, where I still have a residual of a few hundred uV. Maybe this can be corrected within another round of cleaning. I’ve had to repair all of them, my experience is similar to yours; all elec caps, two 7660s, and one MAC. One of mine has two feet missing; do you have any ideas on where to source; I can only seem to find square or round ones. Many thanks and all the best. A number of electrolytics were replaced. It brought life back to the frequency counter function. Some readings are way off, I will try cleaning the PCB. I have another 8060A, that one is still 100 OK. I passed the ratio self-test: 1002 counts instead of the 10k in the user guide. Then switches self tests, all ok but SW8 (1kV range) not detected, negative indicator always on and continuity bar blinking. I checked the PCB, did see any leakages. I got this unit in an ingeneer’s rubbish bin in the 80’s, changed the LCD and elastomeric strips and it worked back. Is it time for it to go back to the bin? That lead to my googling the instrument where I found your page. Thanks for all the details on your repair. regards Sometimes it would be stuck in the reset phase with all segments on. Other times it would function faultlessly. I replaced the old electrolytics which didn’t help. Checked all the power supplys and reset operation and all seemed normal. Since it would work one day and not the next you could safely assume that it was a physical connection issue. I noticed that by pushing downward on the display that it affected its operation. I suspected that the elastomeric connector was causing problems. I tried putting it in boiling water and then using a roller on it to flatten it out to make it longer. Tried adding solder to the connectors to build up the pcb pads. Neither worked. In desperation I directly connected the display to the main PCB using wire wrap wire soldered to the PCB lands. It now works every time. Its not a pretty or preferred fix but it didn’t cost me anything and I now have a reliable connection. I hope that this will be useful information for somebody else having similiar problems. Excellent condition on the outside, must have been a lab-test meter, not a field one. Nothing suspicious can be seen on the board, have’nt yet looked under the electrolytics, will change all of them next week. My 8060A was unused for several years (stored without battery at room temperature) and it eventually worked with fresh battery for few hours, but now I have similar symptoms as Classicgadgets. I’ll consider to change the electrolytic caps routinely (as pointed out earlier, old aluminum caps will fail eventually) as a first remedy. Dear Classicgadgets, did you get your 8060A back to life again after changing caps? So first things first, get the power supplies working. Capacitors are cheap. All other scales work. The 20 range reads okay with the input divider test (table 4-1) and puts out the right voltage for reading resistances (table 5-8). Has me stumped. The diode function doesn’t work either which utilizes the same switch. The switches seem pretty bullet proof though, so I’m looking for another cause.If it does, maybe the wrong decimal point is coming on. Check the range switch inputs to the MAC, pins 31 to 37. High impedance input, straight into the ADC. Therefore the display can be any random value or even “OL”, until something is connected or the inputs are shorted. They don’t exist in the.PDFs available on the Fluke web site. Are there any other 32-year-old electrolytic caps that you suggest changing out while I’m digging around in my 8060A’s guts? Page 7-4 in the manual shows the test points, but not TP1. Please can someone help? The rightmost TP on the LCD PCB is TP6, not TP8 as shown in the manual. I have a hardcopy of the old manual, and it shows that TP1 is U2P4. U2 is the old-style 14-pin DIP RMS converter, located just to the right of the piezo buzzer. This hardcopy also has TP6 and TP8 labeled correctly, so the errors must have been introduced when they updated the manual. You might notice the document is a curious mixture of old hand-drawn diagrams and CAD-produced stuff. The caps fit over the two lowest (left) side function selection switches. Super glue did not do a good job of holding the tiny pieced together. Thanks in advance for your help. After cleaning, problem seems to be DCV negative leakage. Cleaning the mac chip in IPA hasn’t fixed it so far, but will try another cleaning cycle. I am missing a battery cover so I made a 3d printable one.

Понравилась статья? Поделить с друзьями:
0 0 голоса
Рейтинг статьи
Подписаться
Уведомить о
guest

0 комментариев
Старые
Новые Популярные
Межтекстовые Отзывы
Посмотреть все комментарии
  • Должностная инструкция рентгенолаборанта рентгеновского кабинета
  • Кофемашина siemens surpresso s75 инструкция
  • Вд 40 для чего используется в быту инструкция
  • Спиртовой термометр для измерения температуры тела инструкция по применению
  • Витамин тетравит для животных инструкция по применению