Insulation Multimeter 
  Electrical Specifications 
35 
DC Millivolts Measurement 
Range Resolution 
Accuracy all 1587 models 
±(% of Rdg + Counts) 
Accuracy 1577 
±(% of Rdg + Counts) 
600.0 mV dc  0.1 mV 
±(0.1 % + 1)  ±(0.2 % + 1) 
DC and AC Current Measurement 
Range Resolution 
Accuracy all 1587 models 
±(% of Rdg+Counts) 
Accuracy 1577 
±(% of Rdg+Counts) 
Burden Voltage 
(Typical) 
AC 
45 Hz to 
1000 Hz 
400 mA  0.1 mA 
±(1.5 % + 2) 
[1]
  ±(2 % + 2)
[1]
 
2 mV/mA 
60 mA  0.01 mA 
±(1.5 % + 2) 
[1]
  ±(2 % + 2)
[1]
 
DC 
400 mA  0.1 mA 
±(0.2 % + 2)  ±(1.0 % + 2) 
2 mV/mA 
60 mA  0.01 mA 
±(0.2 % + 2)  ±(1.0 % + 2) 
[1]  1 kHz bandwidth. 
Overload ............................................................. 600 mA for 2 minutes maximum 
Fuse Protection for mA Input .............................. 0.44 mA, 1000 V, IR 10 kA 
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 up to 300 mA, decreasing 
linearly to crest factor ≤1.5 at 600 mA. For non-sinusoidal waveforms add 
+(2 % reading + 2 % FS) typical, for a crest factor up to 3.