1587 FC/1587/1577
Users Manual
34
1577 Accuracy
Range Resolution
50 Hz to 60 Hz
±(% of Rdg + Counts)
600.0 mV 0.1 mV
±(2 % + 3)
6.000 V 0.001 V
±(2 % + 3)
60.00 V 0.01 V
±(2 % + 3)
600.0 V 0.1 V
±(2 % + 3)
1000 V 1 V
±(2 % + 3)
AC Conversion ................................................... Inputs are ac-coupled and calibrated to the rms value of sine wave
input. Conversions are true-rms responding and specified from 5 % to
100 % of range. Input signal crest factor can be up to 3 at up to 500 V,
decreasing linearly to crest factor ≤1.5 at 1000 V. For non-sinusoidal
waveforms add ±(2 % reading + 2 % FS) typical, for a crest factor up
to 3.
Input Impedance ................................................. 10 MΩ (nominal), <100 pF, ac-coupled
Common Mode Rejection Ratio
(1 kΩ unbalanced) .............................................. >60 dB at dc, 50 or 60 Hz
DC Voltage Measurement
Range Resolution
Accuracy 1587 and 1587T
[1]
±(% of Rdg + Counts)
Accuracy 1577
[1]
±(% of Rdg + Counts)
6.000 V dc 0.001 V
±(0.09 % + 2) ±(0.2 % + 2)
60.00 V dc 0.01 V
±(0.09 % + 2) ±(0.2 % + 2)
600.0 V dc 0.1 V
±(0.09 % + 2) ±(0.2 % + 2)
1000 V dc 1 V
±(0.09 % + 2) ±(0.2 % + 2)
[1] Accuracies apply to ± 100% of range.
Input Impedance ................................................. 10 MΩ (nominal), <100 pF
Normal Mode Rejection Ratio ............................. >60 dB @ 50 Hz or 60 Hz
Common Mode Rejection Ratio .......................... >120 dB @ dc, 50 Hz or 60 Hz (1 kΩ unbalance)
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