Fluke 279FC User Manual - Page 52

Input Characteristics, MIN MAX Recording, Typical Short Circuit Current

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279 FC Users Manual Input Characteristics Function Overload Protection  1100 V rms  1100 V rms  1100 V rms Input Impedance (nominal) Common Mode Rejection Ratio (1 kΩ unbalance) Normal Mode Rejection >10 MΩ 120 dB at dc, 50 Hz or 60 Hz >60 dB at 50 Hz or 60 Hz >10 MΩ 60 dB, dc to 60 Hz >10 MΩ 120 dB at dc, 50 Hz or 60 Hz >60 dB at 50 Hz or 60 Hz /  R/  1100 V rms 1100 V rms Open Circuit Test Voltage Full Scale Voltage To 6 MΩ 50 MΩ

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279 FC
Users Manual
42
Input Characteristics
MIN MAX Recording
Function
Overload
Protection
Input Impedance
(nominal)
Common Mode
Rejection Ratio
(1 k
Ω
unbalance)
Normal Mode Rejection
1100 V rms
>10 M
Ω
<100 pF
>120 dB at dc, 50 Hz or 60 Hz
>60 dB at 50 Hz or 60 Hz
1100 V rms
>10 M
Ω
<100 pF
>60 dB, dc to 60 Hz
1100 V rms
>10 M
Ω
<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 M
Ω
/
1100 V rms
<2.7 V dc
<0.7 V dc
<0.9 V dc
<350
μ
A
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.