True-rms Multimeters
General Specifications
23
Table 2. Input Characteristics
Function
Input Impedance
(Nominal)
Common Mode Rejection Ratio
(1 kΩ Unbalanced)
Normal Mode
Rejection
Volts AC >5 MΩ <100 pF >60 dB at dc, 50 or 60 Hz
Volts DC
>10 MΩ <100 pF >100 dB at dc, 50 or 60 Hz
>60 dB at 50 or 60
Hz
Auto-V LoZ ~3 kΩ <500 pF >60 dB at dc, 50 or 60 Hz
Open Circuit Test Voltage Full Scale Voltage
Short Circuit
Current
To 6.0 MΩ 40 MΩ Ohms <2.7 V dc
<0.7 V dc <0.9 V dc
<350 μA
Diode Test <2.7 V dc 2.000 V dc <1.2 mA
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