Hioki 3290-10, Instruction Manual

Page: 63 / 152

4.3 Measuring Current
57
1
2
3
4
5
6
7
8
9
10
M
easurement
P
ro
cedure
Auto Zero Adjustment
(for DC and AC+DC modes)
❖
See Section 5.1 "Auto Zero Adjustment Function" (page 89)
6.
Verify that the measurement current is zero, or that the clamp-
on sensor is not clamped around a conductor.
7.
Press
SHIFT
→
(
0ADJ
) to execute auto zero adjustment.
• If Auto zero adjustment is not performed, the displayed (and
output) current value is always added to measurements.
• Auto zero adjustment is unnecessary in AC mode.
• Auto zero adjustment should be performed in DC and AC+DC
modes. In the L range, auto zero adjustment is possible when
the displayed value is up to ± 450 counts, and in the H range,
up to ± 45 counts.
• To cancel auto zero adjustment, turn the power off and back
on.
• Auto zero adjustment cannot be performed during integral or
duty measurement (while
START
is displayed).