Page 2 - Lifetime Limited Warranty
Lifetime Limited Warranty Each Fluke 20, 70, 80, 170 and 180 Series DMM will be free from defects in material and workmanship for its lifetime. As used herein,“lifetime” is defined as seven years after Fluke discontinues manufacturing the product, but the warranty period shall be at least ten years ...
Page 3 - Table of Contents; Chapter
i Table of Contents Chapter Title Page 1 Before You Start .......................................................................................................... 1-1 Safety Information.......................................................................................................... 1-1Con...
Page 4 - Users Manual; ii
Model 187 & 189 Users Manual ii Selecting the Range ....................................................................................................... 2-10Understanding the Display ............................................................................................. 2-10 Primary Dis...
Page 6 - iv
Model 187 & 189 Users Manual iv 6 Maintenance ................................................................................................................. 6-1 Introduction .................................................................................................................... 6-...
Page 7 - List of Tables; Table
v List of Tables Table Title Page 1-1. Safety Information................................................................................................................. 1-2 1-2. International Electrical Symbols ..........................................................................................
Page 8 - vii; List of Figures; Figure Title
vii List of Figures Figure Title Page 2-1. AC Volts Display ................................................................................................................... 2-22-2. Rotary Switch .........................................................................................................
Page 9 - viii
Model 187 & 189 Users Manual viii 3-10. Temperature Measurement ................................................................................................... 3-153-11. AC Current Measurement.......................................................................................................
Page 10 - Chapter 1; Before You Start; Safety Information
1-1 Chapter 1 Before You Start Safety Information The Fluke Model 187 and Model 189 True RMSMultimeters (hereafter referred to as the “meter”) complywith: • 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 Cat...
Page 11 - Warning; Do not operate the meter around explosive gas, vapor, or dust.
Model 187 & 189Users Manual 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 ormissing plastic. Pay particular attention t...
Page 12 - Remove test leads from the meter before you open the battery door.; Caution
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 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 l...
Page 13 - Symbols; Table 1-2. International Electrical Symbols
Model 187 & 189Users Manual 1-4 Symbols Symbols used on the meter and in this manual areexplained 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 with releva...
Page 14 - Chapter 2; Getting Acquainted; Introduction; Logging; Turning the Meter On; while turning the meter
2-1 Chapter 2 Getting Acquainted Introduction Although this manual describes the operation of bothModels 187 and 189, all illustrations and examplesassume use of Model 189. Additional capabilities withModel 189 are discussed in Chapter 4. These capabilitiesinclude the following: • An enhanced memory...
Page 15 - Battery Considerations; Automatic Power Off
Model 187 & 189Users Manual 2-2 tc031f.eps Figure 2-1. AC Volts Display Battery Considerations The meter uses four AA alkaline batteries. The followingparagraphs describe several techniques used to conservebattery power. Automatic Power Off The display blanks and the meter goes into a “sleep”mod...
Page 16 - Automatic Backlight Off; Press; Low Battery Indication; A constant battery icon (
Getting Acquainted Battery Considerations 2 2-3 Automatic Backlight Off Press T to select the backlight level (low, high, or off.) In low or high, the backlight turns off automatically after agiven period. This period is also preset to 15 minutes andcan be set to a maximum of 99 minutes from the set...
Page 17 - Rotary Switch; nS; CLEAR MEM; OFF; VIEW MEM; mA
Model 187 & 189Users Manual 2-4 Rotary Switch Turn the meter on by selecting any measurement function(identified with white letters around the rotary switch). Themeter presents a standard display for that function (range,measurement units, modifiers, etc.) The display may alsobe influenced by so...
Page 18 - Pushbuttons; Use the blue button (
Getting Acquainted Pushbuttons 2 2-5 Pushbuttons The buttons activate features that augment the functionselected with the rotary switch. The buttons are shown inFigure 2-3 and described in Table 2-2. Use the blue button ( % ) to access functions labeled in blue for some of the rotary switch position...
Page 20 - Position
Getting Acquainted Pushbuttons 2 2-7 Table 2-1. Rotary Switch Positions (cont.) Position Rotary Switch Function % Blue Key Function I AC current measurements from 0 mA to 20.000 A none = AC current measurements from 0 µ A to 5000.0 µ A none K DC current measurements from 0 mA to 20.000 A AC over DC ...
Page 21 - Note
Model 187 & 189Users Manual 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 primary display freezes, allowing time to press a seco...
Page 22 - Button
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 positive pulse slope. • In ohms continuity, select beep on open. • In VIEW MEM, see Chapter 4 (Model 189). (none)...
Page 23 - Primary Display
Model 187 & 189Users Manual 2-10 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. Theseselections all use a specific fixed range. Auto...
Page 24 - Secondary Display
Getting Acquainted Understanding the Display 2 2-11 • dB (in ac volts functions): the dBm or dBV value. • REL: the difference between the present reading anda stored reference reading. • Setup: various messages (see Chapter 5). • Overload conditions: OL displayed. • Error conditions. Secondary Displ...
Page 26 - Number
Getting Acquainted Understanding the Display 2 2-13 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, negativevalues are to the left and positive to the ri...
Page 27 - Minimum reading displayed.
Model 187 & 189Users Manual 2-14 Table 2-3. Display Features (cont.) Number Feature Description FASTMINMAXAVG 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...
Page 29 - Elapsed Time Display (; appears when you can use
Model 187 & 189Users Manual 2-16 Table 2-3. Display Features (cont.) Number Feature Description 51000AUTO MANUAL Range. Digits display range in use. f MS 88:88 Time Display. Used with HOLD, AutoHOLD, MIN MAX, FAST MN MX (SAVE, andLOGGING Model 189). Elapsed Time Display ( f on): shown in minutes...
Page 30 - Using the Input Terminals
Getting Acquainted Using the Input Terminals 2 2-17 Using the Input Terminals All functions except current use the * and COM inputs. Current functions use the inputs shown below: • I or K function: Use A and COM inputs from 400 mA to 20 A. Use mA/ µ A and COM for inputs ≤ 400 mA. • = or x function: ...
Page 31 - Using Display Hold
Model 187 & 189Users Manual 2-18 Using Display Hold Press Q to enter the Display Hold mode and freeze the present reading and its time stamp. New readings nowappear in the secondary display. See Figure 2-6. To exitDisplay Hold mode, press Q again. Note The bar graph and secondary display may sho...
Page 32 - Using AutoHOLD; OQ; Using MIN MAX
Getting Acquainted Using AutoHOLD 2 2-19 Using AutoHOLD W Warning AutoHOLD mode does not capture unstableor noisy readings. Do not use AutoHOLDmode to determine that circuits are withoutpower. To enter AutoHOLD, press OQ (AutoHOLD). AutoHOLD mode freezes the present reading and its timestamp. New re...
Page 34 - Using FAST MN MX; Activate FAST MN MX by pressing
Getting Acquainted Using FAST MN MX 2 2-21 Using FAST MN MX FAST MN MX can capture transient signal events as shortas 250 µs, but with decreased accuracy; only 3-1/2 displaydigits are allowed. Activate FAST MN MX by pressing O M . As with regular MIN MAX, you can then press M to cycle through maximu...
Page 35 - Using HOLD with MIN MAX or FAST MN MX
Model 187 & 189Users Manual 2-22 Using HOLD with MIN MAX or FAST MN MX You can enable the HOLD mode when in the MIN MAXmode is by pressing Q . No further minimum, maximum, or average updates occurwhile the HOLD mode is enabled. Exit HOLD mode by pressing Q a second time. Using Relative Mode (REL...
Page 36 - Chapter 3; Making Measurements; Ranges available in volts functions are:
3-1 Chapter 3 Making Measurements Introduction Chapter 3 explains how to make measurements. Mostmeasurement functions can be selected by using therotary switch. White letters or symbols identify primary functions; blueletters or symbols identify alternative functions. Press theblue button to access ...
Page 37 - Measuring AC Voltage; measurements, discussed next in this chapter.
Model 187 & 189Users Manual 3-2 When measuring voltage, the meter acts like a 10 M Ω (10,000,000 Ω ) impedance in parallel with the circuit. This loading effect can cause measurement errors in high-impedance circuits. In most cases, the error is negligible(0.1% or less) if the circuit impedance ...
Page 38 - dB Measurements in AC Volts Functions
Making Measurements Measuring Voltage 3 3-3 dB Measurements in AC Volts Functions The two ac volts functions allow you to display readings asdeviations in dB (decibels) above or below an establishedlevel. Set up dB measurements with the following procedure: 1. Make an ac volts measurement to be used...
Page 39 - Measuring DC Voltage
Model 187 & 189Users Manual 3-4 dB is calculated with the following formula: = Vr Vx dB 10 log * 20 • For dBm, Vr is the voltage across the referenceresistance at 1 mW. For example, Vr would be0.7746 V with a 600 Ω reference resistance. • For dBV, the reference voltage (Vr) is 1 V. Mea...
Page 41 - Measuring Resistance; by sending a small current through the circuit.
Model 187 & 189Users Manual 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 ...
Page 42 - In-Circuit Resistance Measurements; Isolating a Potentiometer; Isolating a Resistor
Making Measurements Measuring Resistance 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 LO...
Page 43 - Testing for Continuity
Model 187 & 189Users Manual 3-8 Keep the following in mind when measuring resistance: • Because the meter’s test current flows through allpossible paths between the probe tips, the measuredvalue of a resistor in a circuit is often different fromthe resistor’s rated value. • The test leads can ad...
Page 45 - ON
Model 187 & 189Users Manual 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...
Page 46 - The following are some tips for measuring conductance:; until AVG appears in the; with the test leads open to subtract the
Making Measurements Using Conductance for High Resistance Tests 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 T...
Page 47 - Measuring Capacitance
Model 187 & 189Users Manual 3-12 Measuring Capacitance Caution To avoid possible damage to the meter or tothe equipment under test, disconnect circuitpower and discharge all high-voltagecapacitors before measuring capacitance.Use the dc voltage function to confirm thatthe capacitor is discharged...
Page 48 - Testing Diodes; cannot be
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...
Page 50 - Measuring Temperature; C or Fahrenheit
Making Measurements Measuring Temperature 3 3-15 Measuring Temperature To measure temperature, set up the meter as shown inFigure 3-10. The meter begins temperature measurementin the degree units last used (Celsius ° C or Fahrenheit ° F). Once you have selected the temperature function, you canchang...
Page 51 - Measuring Current; To measure ac or dc current, proceed as follows:; Insert the black lead into the COM terminal. Insert the; or
Model 187 & 189Users Manual 3-16 Measuring Current W Warning Never attempt an in-circuit currentmeasurement where the open-circuit potentialto earth is greater than 1000 V. You maydamage the meter or be injured if the fuseblows during such a measurement. Caution To avoid possible damage to the m...
Page 52 - If you are using the A terminal, set the rotary switch to; rotary switch to; Input AlertTM Feature; Pulse
Making Measurements Measuring Current 3 3-17 3. If you are using the A terminal, set the rotary switch to mA/A. If you are using the mA/ µ A terminal, set the rotary switch to µ A for currents below 5000 µ A (5 mA), or mA/A for currents above 5000 µ A. 4. Open the circuit path to be tested. Touch th...
Page 53 - Measuring AC Current
Model 187 & 189Users Manual 3-18 The following are some tips for measuring current: • If the display shows LEAd5 and you are sure the meter is set up correctly, test the meter’s fuses asdescribed under "Testing the Fuses" in Chapter 6. • A current meter drops a small voltage across itsel...
Page 55 - Measuring DC Current
Model 187 & 189Users Manual 3-20 Measuring DC Current To measure dc current, set up the meter as shown inFigure 3-12. You can view separate dc and ac amps signalcomponents. • Press % once to display ac current in the primary display and dc current in the secondary display(ac over dc). • Press % ...
Page 56 - Current through one component
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 LOGG...
Page 57 - Measuring Frequency; Figure 3-13. Functions Allowing Frequency
Model 187 & 189Users Manual 3-22 Measuring Frequency Frequency is the number of cycles a signal completeseach second. The meter measures the frequency of avoltage or current signal by counting the number of timesthe signal crosses a threshold level each second. Figure 3-13 highlights the functio...
Page 58 - Measuring Duty Cycle
Making Measurements Measuring Duty Cycle 3 3-23 tc026f.eps Figure 3-14. Hz Display The meter beeps to indicate when a particular pushbuttonis not allowed when measuring frequency. The followingare some general rules. • Relative ( D ), Hold ( Q ), and MIN MAX ( M )can be used. • FAST MN MX ( O M ) ca...
Page 59 - Measures Positive Pulse
Model 187 & 189Users Manual 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 Measurements
Page 60 - Measuring Pulse Width
Making Measurements Measuring Pulse Width 3 3-25 To measure duty cycle, set up the meter to measurefrequency; then press N a second time. You can select the level the meter uses by pressing [ to trigger on the positive slope or ] to trigger on the negative slope. A typical duty cycle display is show...
Page 63 - Chapter 4; Using Memory & Communications Features; Types of Memory; Saved Readings Memory
4-1 Chapter 4 Using Memory & Communications Features Introduction Chapter 4 shows you how to use memory andcommunication features available on the meters. Note Memory, Logging, and Save features apply to the189 only. Types of Memory The meter has two types of memory data: saved readingsand logge...
Page 64 - Storing Saved Readings; FULL; Starting Logging; Stopping Logging
Model 187 & 189Users Manual 4-2 Storing Saved Readings To add the current displayed reading to the savedreadings memory, press O R (SAVE). • 5AVEd appears briefly to confirm the operation and the index number display increments by one. • FULL appears if no room is available in the saved readings...
Page 65 - Viewing Memory Data
Using Memory & Communications Features Viewing Memory Data 4 4-3 Viewing Memory Data Use the following procedure to view memory data: Note Viewing memory data involves turning the rotaryswitch from its current function. Selections arenot retained when you turn the switch. To returnthe meter to t...
Page 67 - Clearing Memory; MEM to clear saved readings memory.; Using Communications
Using Memory & Communications Features Clearing Memory 4 4-5 Clearing Memory You can clear memory in two ways. • First, If the rotary switch is in the VIEW MEM position,you can press the blue button ( % ) to activate the CLEAR MEM function. CLr.? appears in the display. You are then prompted to ...
Page 68 - Chapter 5; Changing the Default Settings; To enter the Setup mode, turn the meter on and press
5-1 Chapter 5 Changing the Default Settings Introduction The meter allows you to change the default operatingconfiguration of the meter by changing setup optionsmade at the factory. Many of these setup options affect general meteroperations and are active in all functions. Others arelimited to one f...
Page 69 - nt
Model 187 & 189Users Manual 5-2 Table 5-1. Function Specific Setup Selections Selection Precondition Option Choices ( < > ) Factory Default 000.0 ° C or 000.0 ° F Temperature ( w ) selected. Temperatureoffset adjust 000.0 ° to ± 100.0 ° C ( 180 . 0 ° F ) - Use q to increment or decrement d...
Page 70 - Selection; bEEP
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 Display digits 8888 (4) or 88888 (5) Use < > to select. 88888 bLoFF Backlight time out MM:S...
Page 71 - Adjusting the Temperature Offset
Model 187 & 189Users Manual 5-4 Select and edit setup options as follows: • Turn the rotary switch to a measurement function: • Press O T to advance to the next setup option and save the present selection. • Press [ to increase or ] to decrease a value. • Press T ( l ) to go back to the previous...
Page 73 - Setting the Power Off Timeout; OT
Model 187 & 189Users Manual 5-6 Selecting Display Resolution(3 1/2 or 4 1/2 Digits) For most functions, you can choose whether the meterdisplays the reading in 3-1/2 or 4-1/2 digits. • The 3-1/2 digit setting provides lower resolution withfaster response time. • The 4-1/2 digit setting provides ...
Page 74 - Setting the 24-Hour Clock
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 stampsduring HOLD, AutoHOLD, MIN MAX, FAST MN MX,SAVE, and LOGGING operations. Hours and minutes to a maximum of 23:59 can be set. Note The meter uses elapsed time fo...
Page 75 - Returning to Factory Defaults; Fcty; Saving Setup Options
Model 187 & 189Users Manual 5-8 Returning to Factory Defaults Your meter comes with the setup options preset at thefactory. These factory settings are shown in Tables 5-1and 5-2. You can always return to these settings asfollows: 1. Press O T until Fcty appears in the display. 2. Press % to sele...
Page 76 - Chapter 6; Maintenance; Turn the meter off and remove all test leads.; Testing the Fuses
6-1 Chapter 6 Maintenance Introduction This chapter describes basic operator maintenance. Forcalibration and performance test information, order the187 & 189 Service Manual, PN 1584337. General Maintenance Periodically wipe the case with a damp cloth and milddetergent. Do not use abrasives or so...
Page 78 - Replacing the Batteries; Turn the rotary switch to OFF and remove the test
Maintenance Replacing the Batteries 6 6-3 Replacing the Batteries Replace the batteries with four AA batteries (NEDA I5A orIEC LR6). W Warning To avoid false readings, which could lead topossible electric shock or personal injury,replace the batteries as soon as the batteryindicator ( B ) appears. R...
Page 80 - Replacing the Fuses; User-Replaceable Parts
Maintenance Replacing the Fuses 6 6-5 Replacing the Fuses W Warning To avoid electrical shock or damage to themeter, only use replacement fuses specifiedin Table 6-1. Referring to Figure 6-2, examine or replace the meter’sfuses as follows: 1. Turn the rotary switch to OFF and remove the test leads f...
Page 81 - Accessory Mount
Model 187 & 189Users Manual 6-6 Table 6-1. User-Replaceable Parts Description Reference Designators Part Number Qty Access Door, Battery / Fuse MP14 666446 1 Tilt-Stand MP8 659026 1 Accessory 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 ...
Page 82 - Chapter 7; Specifications; Safety and Compliances
7-1 Chapter 7 Specifications Safety and Compliances Maximum voltage between any terminal and earthground. 1000 V dc or rms ac Compliances - DUAL RATINGS Complies with IEC 1010-1 to 1000 V Overvoltage Category III,Pollution Degree 2; and IEC 664-1 to 600 V Overvoltage CategoryIV, Pollution Degree 2 *...
Page 83 - Physical Specifications; AA Alkaline, NEDA 15A or LR6
Model 187 & 189Users Manual 7-2 Physical Specifications Display (LCD) Digital: 50000/5000 counts primary display, 5000 counts secondary display;updates 4/second. Analog: 51 segments, updates 40/second. Operating Temperature − 20 ° C to + 55 ° C Storage Temperature − 40 ° C to + 60 ° C Temperatur...
Page 84 - Feature Summary
Specifications Feature Summary 7 7-3 Feature Summary Feature Description Dual Digital Displays Analog Bar Graph Primary: 50,000 counts Secondary: 5,000 countBar graph: 51 segments, updates 40 times/second Backlight with 2 brightness levels Bright white backlight for clear readings in poorly lighted ...
Page 85 - Basic Specifications
Model 187 & 189Users Manual 7-4 Basic Specifications Function Ranges/Description DC Voltage 0 to 1000 V AC Voltage, true RMS 2.5 mV to 1000 V – 100 kHz 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...
Page 86 - Detailed Accuracy Specifications; Accuracy
Specifications Detailed Accuracy Specifications 7 7-5 Detailed Accuracy Specifications Accuracy is specified for a period of one year after calibration, at 18 ° C to 28 ° C (64 ° F to 82 ° F), with relative humidity to 90 %. Accuracy specifications are given as: ± ( [ % of reading ] + [ number of le...
Page 87 - AC
Model 187 & 189Users Manual 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 A 0.1 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 ...
Page 89 - Resistance; up to; Conductance
Model 187 & 189Users Manual 7-8 Function Range Resolution Accuracy Resistance 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...
Page 90 - Function; Capacitance
Specifications Detailed Accuracy Specifications 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...
Page 92 - Frequency Counter Sensitivity
Specifications Frequency Counter Sensitivity 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 MHz 500 mV 20 mV 20 mV 1...
Page 93 - Input Characteristics; Typical Short-Circuit Current; Ohms
Model 187 & 189Users Manual 7-12 Input Characteristics Function Input Impedance (Nominal) Volts, mV 10 M Ω , < 100 pF Common Mode Rejection Ratio Normal Mode Rejection DC Volts, mV >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 Fu...
