Fluke 789 User Manual
Page 48
789
Users Manual
40
DC Millivolts Measurement
Range (mV dc)
Resolution
Accuracy,
±
(% of Reading + Counts)
400.0
0.1 mV
0.1 % + 2
AC Volts Measurement
Range (ac)
Resolution
Accuracy,
±
(% of Reading + Counts)
50 Hz to 60 Hz
45 Hz to 200 Hz
200 Hz to 500 Hz
400.0 mV
0.1 mV
0.7 % + 4
1.2 % + 4
7.0 % + 4
4.000 V
0.001 V
0.7 % + 2
1.2 % + 4
7.0 % + 4
40.00 V
0.01 V
0.7 % + 2
1.2 % + 4
7.0 % + 4
400.0 V
0.1 V
0.7 % + 2
1.2 % + 4
7.0 % + 4
1000 V
1 V
0.7 % + 2
1.2 % + 4
7.0 % + 4
Specifications are valid from 5 % to 100 % of amplitude range.
AC conversion: true rms
Maximum crest factor: 3 (between 50 and 60 Hz)
For non-sinusoidal waveforms, add
±
(2 % reading + 2 % f.s.) typical
Input impedance: 10 M
Ω
(nominal), < 100 pF, ac-coupled
Common mode rejection ratio: > 60 dB at dc, 50 Hz, or 60 Hz
In an RF field of 3 V/m, add 0.25 % of range