Fluke 225C Service Manual - Page 63

Warming Up & Pre-Calibration, Error Messages

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5 Calibration Adjustment 5.5 Warming Up & Pre-Calibration 5.5 Warming Up & Pre-Calibration The WarmingUp & Pre-Calibration state will be entered after entering the calibration mode (section 5.3), or after selecting the next step if you have done the Contrast Calibration step CL 120 (section 5.4). The display will show WarmingUp (CL 0200):IDLE (valid) or (invalid). Unless you want to calibrate the display contrast only, you must always start the calibration adjustment at the Warming Up (CL 0200) step. Starting at another step will make the calibration invalid! The WarmingUp & Pre-Calibration consists of a 30 minutes warming-up period, and several internal calibration adjustment steps that do not require input signals. Proceed as follows to do the WarmingUp & Pre-Calibration: 1. Remove all input connections from the test tool. 2. Press to start the Warming-Up & Pre-Calibration. The display shows the calibration step in progress, and its status. The first step is WarmingUp (CL 0200) :BUSY 00:29:59 . The warming-up period is counted down from 00:29:59 to 00:00:00. Then the remaining pre-calibration steps are performed automatically. The entire procedure takes about 60 minutes. 3. Wait until the display shows End Precal: READY The PreCal data have now been stored in FlashROM. If you turn off the test tool now by accident, turn it on again immediately; now you can select the calibration mode, and continue with step 4 below (press NEXT several times, see 5.6). If you turn off the instrument now, and you do not turn on immediately, the test tool has cooled down, and you must repeat the WarmingUp and PreCalibration (select the calibration mode and start at CL 0200). 4. Press NEXT and continue at Section 5.6. Error Messages If error message 1000 is displayed during WarmingUp or PreCalibration step CL0215, the Main PCA hardware version is not suitable for the installed software version. Other error messages during WarmingUp or PreCalibration indicate that the test tool is defective, and should be repaired. 5-7

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Calibration Adjustment
5.5 Warming Up & Pre-Calibration
5
5-7
5.5 Warming Up & Pre-Calibration
The WarmingUp & Pre-Calibration state will be entered after entering the calibration
mode (section 5.3), or after selecting the next step if you have done the Contrast
Calibration step CL 120 (section 5.4). The display will show
WarmingUp (CL 0200):IDLE (valid)
or
(invalid)
.
Unless you want to calibrate the display contrast only, you must always start the
calibration adjustment at the
Warming Up (CL 0200)
step.
Starting at another step will
make the calibration invalid!
The WarmingUp & Pre-Calibration consists of a 30 minutes warming-up period, and
several internal calibration adjustment steps that do not require input signals.
Proceed as follows to do the WarmingUp & Pre-Calibration:
1.
Remove all input connections from the test tool.
2.
Press
to start the Warming-Up & Pre-Calibration.
The display shows the calibration step in progress, and its status.
The first step is
WarmingUp (CL 0200) :BUSY
00:29:59
.
The warming-up period
is counted down from 00:29:59 to 00:00:00.
Then the remaining pre-calibration steps
are performed automatically.
The entire procedure takes about 60 minutes.
3.
Wait until the display shows
End Precal:
READY
The PreCal data have now been stored in FlashROM.
If you turn off the test tool now by accident,
turn it on again immediately; now you
can select the calibration mode, and continue with step 4 below (press
NEXT
several times, see 5.6).
If you turn off the instrument now, and you do not turn on immediately, the test tool
has cooled down, and you must repeat the WarmingUp and PreCalibration (select the
calibration mode and start at CL 0200).
4.
Press
NEXT
and continue at Section 5.6.
Error Messages
If error message
1000
is displayed during WarmingUp or PreCalibration step CL0215,
the Main PCA hardware version is not suitable for the installed software version.
Other
error messages during WarmingUp or PreCalibration indicate that the test tool is
defective, and should be repaired.