Sony BKM-21D - PAL-S Chroma Clamp Pulse Adjustment (BD Board); PAL H BLK Pulse Adjustment (BD Board)

3-12 (E)
BKM-21D
CL-Video
(TP310)
H BLK
(TP313)
Enlargement
a
b
a = b
A
Specification A = 2.8 ± 0.1 usec
Fig. 3-2.
3-3-2. PAL-S Chroma Clamp Pulse
Adjustment (BD Board)
1. Set 01 CH
FORMAT ........... COMPOSITE NTSC
2. Read the following adjustment data at the BKM-21D
menu of the MAINTENANCE menu.
CCP-P
3. Set 02 CH.
4. Set the following adjustment data to the same value as
the NTSC mode data read at step 2 at the BKM-21D
menu of the MAINTENANCE menu.
CCP-P
3-3-3. PAL H BLK Pulse Adjustment
(BD Board)
n
The following adjustment menu is below the BKM-21D
menu of the MAINTENANCE menu.
HBLK-W
1. Input the composite PAL 100% color bar signal into
the VIDEO 4 input terminal.
(Full-field 0% set up)
2. Set 02 CH.
3. Connect the CH1 probe of the oscilloscope to TP310
(CL-VIDEO) of the BD board, and connect the CH2
probe to TP313 (H BLK) of the BD board.
4. Adjust the HBLK-W data so that the H BLK pulse
width A satisfies the specifications.