Sony DNW-A75 Maintenance Manual page 166

4-2. TAPE Maintenance Mode (M0)
4-2-11. BETACAM PB ADJUST Mode (A3)
A32 : DM VR 1
BETACAM PB ADJUST MODE
A32:DM VR 1
*
EQ1 METAL-Y-A 7F
EQ1 METAL-Y-B 81
EQ1 METAL-C-A 77
EQ1 METAL-C-B 81
EQ1 OXIDE-Y-A AD
EQ1 OXIDE-Y-B AF
EQ1 OXIDE-C-A 94
EQ1 OXIDE-C-B 9D
This menu is used to adjust the frequency characteristics of
a primary cosine equalizer (on the DM-89 board).
There are adjustment data for metal and oxide tapes.
Each adjustment data is provided proportionally to the
number of heads (Y-A, Y-B, C-A, and C-B).
A33 : DM VR 2
BETACAM PB ADJUST MODE
A33:DM VR 2
*
MAIN METAL-Y-A BC
MAIN METAL-Y-B BC
MAIN METAL-C-A 91
MAIN METAL-C-B 91
MAIN OXIDE-Y-A A8
MAIN OXIDE-Y-B A8
MAIN OXIDE-C-A A0
MAIN OXIDE-C-B A0
This menu is used to adjust the frequency characteris-
tics of a secondary cosine equalizer (main)(on the DM-
89 board).
There are adjustment data for metal and oxide tapes.
Each adjustment data is provided proportionally to the
number of heads (Y-A, Y-B, C-A, and C-B).
A34 : DM VR 3
BETACAM PB ADJUST MODE
A34:DM VR 3
*
SUB METAL-Y-A A4
SUB METAL-Y-B A4
SUB METAL-C-A 70
SUB METAL-C-B 70
SUB OXIDE-Y-A B6
SUB OXIDE-Y-B B6
SUB OXIDE-C-A AA
SUB OXIDE-C-B AA
This menu is used to adjust the frequency characteristics of
a secondary cosine equalizer (sub)(on the DM-89 board).
There are adjustment data for metal and oxide tapes. Each
adjustment data is provided proportionally to the number
of heads (Y-A, Y-B, C-A, and C-B).
4-76
A35 : DM VR 4
BETACAM PB ADJUST MODE
A35:DM VR 4
*
GUARD BAND METAL-Y 22
GUARD BAND METAL-C 1A
GUARD BAND OXIDE-Y 26
GUARD BAND OXIDE-C 2F
OMC DC METAL-Y E4
OMC DC METAL-C D0
OMC DC OXIDE-Y D0
OMC DC OXIDE-C D0
This menu is used to adjust the guard band width and to set
the DC offset level of an over-modulation compensation
circuit (on the DM-89 board).
There are adjustment data for metal and oxide tapes. Each
adjustment data is provided proportionally to the number
of video channels (Y and C).
A36 : DM VR 5
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
This menu is used to adjust each dropout threshold level of Y
and C channels and to set the RF envelope threshold level.
There are adjustment data for metal and oxide tapes
provided for each dropout threshold level.
There are adjustment data for high (H) and low (L) limits
provided for the RF envelope threshold level.
A37 : TBC VR
BETACAM PB ADJUST MODE
A37:TBC VR
*
SQ-Y RZ 4B
SQ-C RZ 6F
VISC PHASE 06
This menu is used to set each read clock timing of Y and C
channels and to set the data of a PB VISC phase detection
circuit (on the TBC-23A board).
DNW-A75/A75P