Fluke 225C Service Manual - Page 62

Contrast Calibration Adjustment, WarmingUp CL 0200:IDLE valid, Contrast CL 0100, CALIBRATE

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Fluke 19xB-19xC-2x5C Service Manual 5.4 Contrast Calibration Adjustment After entering the calibration mode the display shows: WarmingUp (CL 0200):IDLE (valid) Do not press now! If you did, turn the test tool off and on, and enter the calibration mode again. Proceed as follows to adjust the maximum display darkness (CL 0100), the default contrast (CL 0110) , and the maximum display brightness (CL 0120). 1. Press three times to select maximum darkness calibration Contrast (CL 0100): 2. Press CALIBRATE . The display will show a dark test pattern, see Figure 5-2 3. Using adjust the display to the maximum darkness at which the test pattern is only just visible. 4. Press to return to the softkey menu. 5. Press 6. Press 7. Using to select default contrast calibration Contrast (CL 0110): CALIBRATE. The display shows the test pattern at default contrast. set the display to optimal (becomes default) contrast. 8. Press to return to the softkey menu. 9. Press to select maximum brightness calibration Contrast (CL 0120): 10. Press CALIBRATE. The display shows a bright test pattern. 11. Using adjust the display to the maximum brightness, at which the test pattern is only just visible. 12. Press to return to the softkey menu. 13. Now you can either • Exit, if only the Contrast had to be adjusted. Continue at Section 5.7. or • Do the complete calibration. Press and continue at Section 5.5. to select the next step (WarmingUp), Figure 5-2. Display Test Pattern 5-6

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Fluke 19xB-19xC-2x5C
Service Manual
5-6
5.4 Contrast Calibration Adjustment
After entering the calibration mode the display shows:
WarmingUp (CL 0200):IDLE (valid)
Do not press
now!
If you did, turn the test tool off and on, and enter the
calibration mode again.
Proceed as follows to adjust the maximum display darkness (CL 0100), the default
contrast (CL 0110) , and the maximum display brightness (CL 0120).
1.
Press
three times to select maximum darkness calibration
Contrast (CL 0100):
2.
Press
CALIBRATE
.
The display will show a dark test pattern, see Figure 5-2
3.
Using
adjust the display to the maximum darkness at which the test pattern
is only just visible.
4.
Press
to return to the softkey menu.
5.
Press
to select default contrast calibration
Contrast (CL 0110):
6.
Press
CALIBRATE
.
The display shows the test pattern at default contrast.
7.
Using
set the display to optimal (becomes default) contrast.
8.
Press
to return to the softkey menu.
9.
Press
to select maximum brightness calibration
Contrast (CL 0120):
10.
Press
CALIBRATE
.
The display shows a bright test pattern.
11.
Using
adjust the display to the maximum brightness, at which the test pattern
is only just visible.
12.
Press
to return to the softkey menu.
13.
Now you can either
•
Exit, if only the Contrast had to be adjusted. Continue at Section 5.7.
or
•
Do the complete calibration.
Press
to select the next step (WarmingUp),
and continue at Section 5.5.
Figure 5-2. Display Test Pattern