User Guide

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UT207A/208A/209A Operating Manual

B. AC Voltage

Range Resolution Accuracy Overload protection

400mV 0.1mV ±(1.2%+20)

4V 0.001mV

40V 0.01V ±(1.2%+3) DC1000V/AC750V

400V 0.1V

750V 1V ±(1.2%+5)

Remarks:

● Input Impedance: 10MΩ

● Frequency Response: 40Hz~400Hz

● Change to AC:

UT207A/208A: Couple AC and average value response method. UT209A:

Couple AC and True RMS response method. Input sine wave to adjust. Non

sine wave must follow the below data to adjust:

Peak factor: 1.4~2.0, add 1.0% on the stated accuracy

Peak factor: 2.0~2.5, add 2.5% on the stated accuracy

Peak factor: 2.5~3.0, add 4.0% on the stated accuracy.