Specifications of Digital Multimeter HTC Instrument DM-81

Specifications
1. DC Voltage
Range Resolution Accuracy
200mV 0.1mV
±（1.2%+5）
2V 1mV
20V 10mV
200V 100mV
1000V 1V ±（1.5%+5）
-- Input Impendency: 1MΩ@200mV&2V, effective @10MΩ for other ranges
-- Overload Protection: 250V for 200mV & 2V range, effective DC or AC 1000V for other
ranges
2. AC Voltage
Range Resolution Accuracy
200mV 0.1mV ±（2%+5）
2V 1mV ±（1.8%+5）
20V 10mV
±（1.5%+5） 200V 100mV
750V 1V ±（2%+7）
-- Input Impendency: 1MΩ@200mV&2V, effective @10MΩ for other ranges
-- Frequency Range: 40Hz ~ 400Hz (40Hz~100Hz @200V/700V)
-- Overload Protection: 250V for 200mV & 2V range, effective DC or AC 1000V for other
ranges
-- Response: average, calibrated in RMS of sine wave
3. DC Current
Range Resolution Accuracy
2mA 1μA ±（1.5%+5）
200mA 100μA ±（2%+5）
20A 10mA ±（3%+5）
-- Overload Protection: 200mA/250V fuse, 20A range without fuse
-- Max Input Current: 20A (≤10 seconds)
-- Measured by the voltage drop: full range as 200mV