Page 2 of 3, Document #2153
187/189 Extended Specifications
©2000 Fluke Corporation
Rev. A-8/00
Detailed Specifications (continued)
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 least
significant digits])
Function Range Resolution Accuracy
Resistance
1
500.00Ω 0.01Ω 0.05% + 10
6
5.0000 kΩ 0.0001 kΩ 0.05% + 2
50.000 kΩ 0.001 kΩ 0.05% + 2
500.00 kΩ 0.01 kΩ 0.05% + 2
5.0000 MΩ 0.0001 MΩ 0.15% + 4
2
30.000 MΩ 0.001 MΩ 1% + 4
2
100.0 MΩ 0.1 MΩ 3% + 2
11
500.0 MΩ 0.1 MΩ 10% + 2
11
Conductance 50.00 nS 0.01 nS 1% + 10
Capacitance
3
1.000 nF 0.001 nF 2% + 5
10.00 nF 0.01 nF
100.0 nF 0.1 nF
1.000 µF 0.001 µF
10.00 µF 0.01 µF 1% + 5
100.0 µF0.1 µF
1.000 µF1 µF
10.0 mF 0.01 mF
50.00 mF 0.01 mF
5
3% + 10
Diode Test
1
3.1000V 0.0001V 2% + 20
Frequency 500.00 Hz 0.01 Hz
4
5.0000 kHz 0.0001 kHz
± (0.005% + 1)
50.000 kHz 0.001 kHz
999.99 kHz 0.01 kHz
Duty Cycle
10.00 to 90.00%
0.1% ±(Voltage Range/
Input Voltage) x 300
counts)
9,10
Pulse Width
5
499.99 ms 0.01 ms
±(3% x(Voltage range/
input voltage)+ 1 count)
9,10
999.9 ms 0.1 ms
Temperature -200 to 0.1°C ±(1% of reading + 1°C)
7,12
+1350°C
-328 to 0.1°F ±(1% of reading +
+2462°F1.8°F)
7,12
Min-Max-Avg Response: 100 ms to 80% Specifed accuracy ±12
counts for changes
>200 ms in duration.
(±40 digits in AC for
changes >350 ms and
inputs >25% of range)
Fast Min-Max 250 µs
8
Specified accuracy ±100
counts for changes
>250 µs in duration
8
1
For the 5,000 count mode, divide the number of least significant digits
(counts) by 10.
2
For relative humidity greater than 70%, resistance accuracy is 0.5%
over 1 MΩ and 2.5% over 10 MΩ.
3
For film capacitor or better, using Relative mode (REL ∆) to zero
residual on 1.1 nF range.
4
Reading will be 0.00 for signals below 0.5 Hz.
5
Least significant digit not active above 10 mF.
6
Using relative mode (REL ∆) to zero residual reading.
7
For ambient temperature changes of ± 5°C, rated accuracy applies after
1 hour.
8
For repetitive peaks, 2.5 ms for single events.
9
Frequency greater than 5 Hz, except for VDC, 500 mV dc and
3000 mV dc functions; 0.5 Hz to 1.0 + 0.
10
Range/input ratios also apply to current functions.
11
To ensure stated accuracy, switch to conductance mode and verify that
the open circuit reading is less than 0.10 nS.
12
Accuracy specification is relative to the user - adjustable temperature
offset, and assumes ambient temperature stable to ± 1°C
Above specifications are subject to change without notice.
Frequency Counter Sensitivity
Approximate VAC Sensitivity
(RMS Sine Wave)
1
15 Hz to 500 Hz
2
VAC Approximate VCD VDC
Input Range
100 kHz
2
Bandwidth
3
Trigger Levels
1
Bandwidth
3
50 mV 5 mV 10 mV 1 MHz -5 mV & 5 mV 1 MHz
500 mV 20 mV 20 mV 1 MHz 5 mV & 65 mV 1 MHz
3000 mV 500 mV 2000 mV 800 kHz 140 mV & 200 mV 90 kHz
5V 0.5V 2.0V 950 kHz 1.4 V & 2.0 V 14 kHz
50V 5V 5.0V 1 MHz 0.5 V & 6.5 V > 400 kHz
500V 20V 20V 1 MHz 5 V & 65 V > 400 kHz
1000V 100V 100V > 400 kHz 5 V & 65 V > 400 kHz
1
Maximum imput = 10 x Range (1000 V max). Noise at low frequencies and amplitudes may
affect accuracy.
2
Usable at reduced sensitivity to 0.5 Hz and 1000 kHz.
3
Typical frequency bandwidth with full scale (or maximum 2 x 10
7
V-Hz product)
RMS sine wave.
Memory and PC Communication
Functions
(Fluke 189 Only)
The Fluke 189 adds the following capabilities:
Interval LOGGING At least 288 intervals (specified by user in Setup)
may be recorded to internal memory. These
values may be viewed using the VIEW MEM
function on the meter. Up to 700 unstable event
values (similar to AutoHold) are automatically
added to LOGGING memory for viewing only
through the optional FlukeView
®
Forms PC
software. Additional intervals will be logged if
the signal is stable.
Reading SAVE Up to 100 readings may be saved by the user in a
memory separate from LOGGING memory. These
readings may be viewed using VIEW MEM.
Burden Voltage (A, mA, µA)
Function Range Burden Voltage (typical)
mA- µA 500.00 µA 102 µV / µA
5,000 µA 102 µV / µA
50.000 mA 1.8 mV / mA
400.00 mA 1.8 mV / mA
A 5.0000 A 0.04 V / A
10.000 A 0.04 V / A