Calibration Error Messages; Calibration Adjustment Procedure - Fluke 771 Calibration Manual

771
Calibration Manual
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.
Error
Message
CAL ERR1
CAL ERR2
CAL ERR3

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.
12
Figure 4. Accessing the Calibration Button
Cause of Error
The difference between the input level
and the zero point is less than the
minimal threshold when performing low
range and high range adjustments.
Calibration parameter checksum
failure.
Code checksum failure.
See Figure 4.
Table 4. Error Messages
Check current loop and ensure correct
current is generated.
Execute all adjustments including
temperature and phase.
The Meter requires repair.
Suggested Action
fdp3.eps