User Manual

279 FC
Users Manual
42
Input Characteristics
MIN MAX Recording
Function
Overload
Protection
Input Impedance
(nominal)
Common Mode
Rejection Ratio
(1 kΩ unbalance)
Normal Mode Rejection

1100 V rms >10 MΩ <100 pF >120 dB at dc, 50 Hz or 60 Hz >60 dB at 50 Hz or 60 Hz

1100 V rms >10 MΩ <100 pF >60 dB, dc to 60 Hz

1100 V rms >10 MΩ <100 pF >120 dB at dc, 50 Hz or 60 Hz >60 dB at 50 Hz or 60 Hz
Open Circuit Test
Voltage
Full Scale Voltage
Typical Short Circuit Current
To 6 M
Ω 50 MΩ
/ 
1100 V rms <2.7 V dc <0.7 V dc <0.9 V dc <350 μA
R/ 
1100 V rms <2.7 V dc 2.000 V dc <1.1 mA
Function Measurement
DC Functions The specified accuracy of the measurement function ±12 counts for changes >350 ms in duration.
AC Functions The specified accuracy of the measurement function ±40 counts for changes >900 ms in duration.