Iso-Tech IDM 17 Manuel D'instructions page 10

(2) AC Volts
Range Resolution Accuracy Over voltage protection

3V 1mV
(1.7% reading+ 5digits)
30V 10mV

600V DC or 600Vrms
(1.7% reading+ 5digits)
300V 100mV
40Hz ~ 500Hz
600V 1V
* Frequency Response : 40Hz 300Hz for 3V range.
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Input Impedance: 10M // less than 100pF.
The reading will fluctuate approximately 2 ~ 5 counts over 200V.
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