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771
Calibration Manual
14
Phase Adjustment Procedure
1. Clamp the Meter’s current clamp around an insulated 18 gauge, copper wire, with
6-inch diameter. Current flow should be in the direction of the arrow on the current
clamp.
2. Press C >1 second until the percentage display indicates the Meter’s currently saved
phase value.
3. Output 0 µA dc from the calibrator.
4. Press A on the Meter to zero the reading.
5. Rotate the Meter’s clamp around the current loop conductor and record the minimum
and maximum values of the Meter’s display reading. See Figure 5.
6. Use Land H, to adjust the difference between the minimum and maximum value
recorded in Step 5, until the reading difference is less than 0.05 mA.
0
•
123
456
7 8 9
/
+
OPRSTBY EARTH
5520A
CALIBRATOR
HI
LO
TRIG
GUARD
TC
20A
NORMAL AUX
SCOPE
OUT
V, , ,
RTD
A, -SENSE,
AUX V
20V PK MAX
20V PK MAX
Rotate Meter clamp around
current loop conductor
fdp5.eps
Figure 5. Phase Adjustment
1.888.610.7664 sales@GlobalTestSupply.com
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