Sony BVW-55 Maintenance Manual page 208

2-2. TAPE Maintenance Mode (M0)
2-2-5. BETACAM PB ADJUST Mode (A3)
A36 : DM VR 5
This menu is used to adjust the dropout threshold level and
to set the RF envelope threshold level.
Metal and oxide tapes are used for the adjustment of a
dropout threshold level. The adjustment item is provided
proportionally to the number of video channels (Y and C).
Green /yellow (H) and yellow/red (L) limits are used for
the setting of an RF envelope threshold level.
Example of display
BETACAM PB ADJUST MODE
A36:DM VR 5
*
DO TH METAL-Y 1A
DO TH METAL-C 12
DO TH OXIDE-Y 2E
DO TH OXIDE-C 27
ENV-TH-H 20
ENV-TH-L 10
A37 : TBC VR 1
This menu is used to set the read clock timing and the data
of a PB VISC phase detection circuit on the DM-121
board.
The adjustment item is provided proportionally to the
number of video channels (Y and C) for read clock timing
setting.
Example of display
BETACAM PB ADJUST MODE
A37:TBC VR1
*
SQ-Y RZ 4B
SQ-C-RZ 6F
VISC PHASE 06
2-32
A38 : TBC VR 2
This menu is used to set the Y/C delay.
There are adjustment items for metal and oxide tapes.
Each adjustment item is provided proportionally to the
number of heads (A and B).
Example of display
BETACAM PB ADJUST MODE
A38:TBC VR2
*
Y/C DELAY METAL-A 36
Y/C DELAY METAL-B 38
Y/C DELAY OXIDE-A 8C
Y/C DELAY OXIDE-B 91
BVW-55 P2