Measurement
Conditions
Copyright © Itech Electronics Co., Ltd.
7
Chapter2 Measurement Conditions
This chapter describes details of relevant work to be finished before use of the
IT9121 power meter.
2.1 Setting of Measurement Range
The appropriate measurement range (voltage and current range) must be set
for accurate measurement. The selected range is effective for different
measurement modes, such as waveform display, integral measurement and
harmonic measurement.
Operation steps
1. In the “Meter” interface Press the soft key corresponding to “V-RANGE” or
“A-RANGE”, and use the knob or “
” to select the voltage or current
range.
2. Press the “Enter” key to confirm the setting. The instrument will
automatically confirm and exit the setting in case of no operation on the
interface for more than 5s.
When the crest factor is 6:
Figure: Voltage Range
Figure: Current Range
