Contrast Calibration Adjustment - Fluke 43B Service Manual

43B
Service Manual
Functions of the keys F1-ENTER are:
Readings and traces
After completing a calibration step, readings and traces are shown using the new
calibration data.

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
PREV select the previous step
NEXT select the next step
CAL start the calibration adjustment of the actual step
EXIT leave the Maintenance mode
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.
.
to select the next step (Warming Up),