Fluke 2680A User Manual page 204

2680A/2686A
Users Manual
PAI Module AC Voltage Measurement Specifications
The following tables provide PAI Module specifications for the ac voltage
measurement function.
Specification
Input Impedance
Maximum Crest Factor
Crest Factor Error
Common Mode Rejection
Maximum Input Voltage
Maximum Volt-Hertz Product
Temperature Coefficient
Accuracy at -20 °C
DC Component Error
A-8
Table A-10. PAI Module AC Voltage General Specifications
1 MΩ in parallel with 100 pF
3.0 Maximum
2.0 for rated accuracy
For nonsinusoidal input signals with crest factors between 2 and
3 and pulse widths >=100 µs, add 0.2% to the accuracy
specifications.
80 dB minimum at dc, 50 Hz/60 Hz +0.1%, 1 kΩ imbalance,
Slow Rate
The lesser voltage of:
300 V ac rms from any terminal on channels 1 and 11 to earth.
150 V ac rms from any terminal on channels 2 through 10, and
12 through 20 to earth.
300 V ac rms from any terminal on channels 1 and 11 to any
other terminal.
150 V ac rms from any terminal on channels 2 through 10 and 12
through 20 to any other input terminal.
6
2x10 Volt-Hertz product on any range, normal mode input.
6
1x10 Volt-Hertz product on any range, common mode input.
Linear interpolation between 2 applicable points for temperatures
between 28 °C and 60 °C, or -10 °C and 18 °C, e.g., if the
applicable specification at 28 °C is 2% and the specification at
60 °C is 3%, then the specification at 40 °C is
(3%-2%)x(40-28)/(60-28)+2%=2.375%.
Multiply the -10 °C to +60 °C accuracy specification by 2. After 1
hour warm-up. For accuracy between -10 °C and -20 °C,
interpolate linearly.
The presence of a dc voltage will cause an indeterminate error in
the reading of the ac voltage on the input.
Characteristic