R, G, B Ad Level Adjustment; R, G, B Pre Knee-Point Adjustment - Panasonic DVCPRO HD AJ-HDC27VP Service Manual

2-4. R, G, B AD Level Adjustment

BOARD
DSP 3
TP
SDI OUT 75ohm termination
ADJUST
Service Menu
F NUMBER -----
MODE TEST Mode
CHART -----
M. EQ WFM
SPEC.
White Level A = 100 IRE +/- 1 IRE
Black Level B = 0 IRE +/- 1 IRE
< Menu >
*** CAM MAIN MENU 1 ***
<KNEE/LEVEL>
Þ MANUAL KNEE
*** CAMERA DESIGN MENU ***
<DSP D/A SET>
Þ GAIN G
Þ GAIN B
Þ GAIN R
<CAMERA SETTING>
Þ TEST SAW
1. Set the MANUAL KNEE to "OFF" and TEST SAW
to "ON".
2. Switch the OUTPUT SW to "Internal Color Bar"
and confirm the signal level (white level) with
WFM.
3. Switch the OUTPUT SW to "CAM OFF".
4. Set the WFM mode to be able to observe SDI
signal as the R, G, B waveform.
5. Adjust CPL R, CPL G, CPL B so that the black
level of the R, G, B signals is "0IRE".
6. Adjust GAIN R, GAIN G, GAIN B so that the white
level of the R, G, B signals is 1IRE plus the level of
the internal color bar signal which was observed at
above item 2.
7. Adjust the black level again as shown in item 5,
and confirm the level is within the specification.
8. If it is out of the specification, repeat item 5 and 6
to make it within the specification.
9. After adjustment, set the MANUAL KNEE to "ON".
Þ CPL G
Þ CPL B
Þ CPL R
White Level (100 IRE)
Black Level (0 IRE)
2-5. R, G, B Pre Knee-point
Adjustment
BOARD
PRE PROCESS
TP
SDI OUT 75ohm termination
ADJUST
Service Menu
F NUMBER
CLOSE
MODE TEST Mode
CHART -----
M. EQ
WFM
SPEC.
No step at portion A
< Menu >
*** CAM MAIN MENU1 ***
<KNEE/LEVEL>
Þ KNEE POINT
Þ KNEE SLOPE
*** CAM DESIGN MENU ***
<PREPRO2>
Þ G KNPT
Þ B KNPT
Þ R KNPT
1. Confirm that the GAIN SW is set to "M : 6dB" and
MANUAL KNEE is set to "ON".
2. Set the TEST SAW to "ON".
3. Set the WFM mode to be able to observe SDI
signal as the R, G, B waveform.
4. Set the KNEE POINT to "95% ® 80%", and KNEE
SLOPE to "50 ® 32".
5. Adjust G KNPT so that the Gch has no step.
(Increase the value temporary to have the step
appear point, then adjust.)
6. Adjust as above item 5 for Rch and Bch.
7. After adjustment, return the GAIN SW, KNEE
POINT and KNEE SLOPE to original setting, and
set the TEST SAW to "OFF".
"A"
portion
STEP
ELE-6
<CAMERA SETTING>
Þ TEST SAW
Portion "A" has
Step.
GAIN on WFM : 5X