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771
Calibration Manual
12
Calibration Button
fdp3.eps
Figure 4. Accessing the Calibration Button
Calibration Error Messages
Table 4 lists the calibration error messages that can be shown on the Meter display.
The suggested actions to eliminate messages are also listed.
Table 4. Error Messages
Error
Message
Cause of Error Suggested Action
CAL ERR1
The difference between the input level
and the zero point is less than the
minimal threshold when performing low
range and high range adjustments.
Check current loop and ensure correct
current is generated.
CAL ERR2
Calibration parameter checksum
failure.
Execute all adjustments including
temperature and phase.
CAL ERR3 Code checksum failure. The Meter requires repair.
Calibration Adjustment Procedure
Allow the Meter to stabilize to room temperature before beginning the calibration
adjustment.
To prepare for adjustment:
1. Remove the battery door and calibration seal.
2. Clamp the current loop in the current flow direction where required.
3. Turn the meter on and wait at least 10 seconds for warming up.
4. Press the hidden calibration button with a probe to enter calibration mode.
See Figure 4.
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