4.1 Warm-up and Zero-adjust Operation
51
Chapter 4 Configuring the Instrument before Measurement (SYSTEM - SYSTEM screen) and
Wiring
4
It is necessary to allow the PQ3198 to warm up to ensure its ability to make precise measurements. Allow
the instrument to warm up for at least 30 minutes after turning it on. (p.48)
This function adjusts the DC components superimposing
on voltage and current to zero. In order to
ensure the device's ability to make precise measurements, it is recommended to perform zero adjustment
after allowing the instrument to warm up for at least 30 minutes. Perform zero-adjustment on both voltage
and current measurement channels.
Configuring the Instrument
before Measurement
(SYSTEM - SYSTEM screen)
and Wiring Chapter 4
4.1 Warm-up and Zero-adjust Operation
Warm-up
Zero Adjustment
Execute
Cancel
[Wiring]
[SYSTEM] screen
[Zero Adjust]
A confirmation dialog box
will be displayed.
• Perform zero adjustment only after plugging the current sensor into the instrument.
• Perform zero adjustment before attaching to the lines to be measured (proper adjust-
ment requires the absence of any input voltage or current).
• In order to ensure the instrument's ability
to make precise measurements, zero
adjustment should be performed at an ambient temperature level that falls within the
range defined by the device specifications.
• The operating keys are disabled during zero adjustment.
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