Input Characteristics - Fluke 187 Getting Started

Model 187 & 189
Getting Started

Input Characteristics

Function
Volts, mV
DC Volts, mV
AC Volts, mV
Ohms
Diode Test
Ohms
Diode Test
28
Common Mode Rejection Ratio
>100 dB at dc, 50 Hz or 60 Hz ±0.1%
> 90 dB dc to 60 Hz
Open Circuit Test Voltage
< 5 V
< 5 V
500 Ω
5 kΩ
100 µA
1 mA
Input Impedance (Nominal)
10 MΩ, < 100 pF
>90 dB at 50 Hz or 60 Hz ± 0.1%
To 5 MΩ
500 mV
Typical Short-Circuit Current
50 kΩ 500 kΩ
10 µA 1 µA
1 mA typical
Normal Mode Rejection
Full-Scale Voltage
30 MΩ + nS
3.1 V
3.1000 V
5 MΩ 30 MΩ
0.1 µA 0.1 µA