Fluke 87V MAX - Frequency Counter Sensitivity and Trigger Levels; Duty Cycle (VDC and MVDC); Input Characteristics

Digital Multimeter
Detailed Specifications
5
Frequency
Range Resolution Accuracy
199.99 Hz 0.01 Hz
±(0.005 % + 1)
[1]
1999.9 Hz 0.1 Hz
19.999 kHz 0.001 kHz
199.99 kHz 0.01 kHz
>200 kHz 0.1 kHz Unspecified
[1] From 0.5 Hz to 200 kHz and for pulse widths >2 μs.
Frequency Counter Sensitivity and Trigger Levels
Input Range
Minimum Sensitivity (RMS Sine Wave)
Approximate Trigger Level
(DC Voltage Function)
5 Hz – 20 kHz 0.5 Hz – 200 kHz
600 mV dc 70 mV (to 400 Hz) 70 mV (to 400 Hz) 40 mV
600 mV ac 150 mV 150 mV -
6 V 0.3 V 0.7 V 1.7 V
60 V 3 V
7 V (≤140 kHz)
4 V
600 V 30 V
70 V (≤14.0 kHz)
40 V
1000 V 100 V
200 V (≤1.4 kHz)
100 V
Duty Cycle (Vdc and mVdc)
Range Accuracy
0.0 % to 99.9 %
[1]
Within ± (0.2 % per kHz + 0.1 %) for rise times < 1 μs.
[1] 0.5 Hz to 200 kHz, pulse width >2 μs. Pulse width range is determined by the frequency by the frequency of the signal.
Input Characteristics
Function
Overload
Protection
[1]
Input
Impedance
(nominal)
Common Mode
Rejection Ratio
(1 kΩ unbalance)
Normal Mode Rejection

1000 V rms
10 MΩ <100 pF
> 120 dB at dc, 50 Hz
or 60 Hz
> 60 dB at 50 Hz or 60 Hz

1000 V rms
> 120 dB at dc, 50 Hz
or 60 Hz
> 60 dB at 50 Hz or 60 Hz

1000 V rms
10 MΩ < 100 pF
(ac-coupled)
> 60 dB, dc to 60 Hz
Open Circuit
Test Voltage
Full Scale Voltage Typical Short Circuit Current
To 6 MΩ
50 MΩ or
60 nS
600 Ω 6 kΩ 60 kΩ 600 kΩ 6 MΩ 50 MΩ
Ω
1000 V rms <2.8 V dc <850 mV dc <1.3 V dc
500 μA 100 μA 10 μA 1 μA 0.2 μA 0.1 μA

1000 V rms <2.8 V dc 2.200 V dc 1.0 mA typical
[1] 10
6
V Hz Max