Contrast Calibration Adjustment - Fluke ScopeMeter 123 Service Manual

123
Service Manual

5.4 Contrast Calibration Adjustment

After entering the Maintenance mode, the test tool display shows
Warming Up (CL 0200):IDLE (valid)
Do not press
Maintenance mode again.
Proceed as follows to adjust the maximum display darkness (CL0100), the default
contrast (CL0110) , and the maximum display brightness (CL0120).
1.
2. Press
3. Using
4.
5. Press
6. Using
7.
8. Press
9. Using
10. You can now :
5-6
now! If you did, turn the test tool off and on, and enter the
Press a three times to select the first calibration step. The display shows:
Contrast (CL 0100) :MANUAL
CAL. The display will show a dark test pattern, see Figure 5-2
adjust the display to the maximum darkness, at which the test pattern
is only just visible.
Press to select the default contrast calibration. The display shows:
Contrast (CL 0110) :MANUAL
CAL. The display shows the test pattern at default contrast.
set the display to optimal (becomes default) contrast.
Press to select maximum brightness calibration. The display shows:
Contrast (CL 0120) :MANUAL
CAL. The display shows a bright test pattern.
adjust the display to the maximum brightness, at which the test
pattern is only just visible.
•
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.
Figure 5-2. Display Test Pattern
.
to select the next step (Warming Up),