Sony Betacam SX DNW-A100 Maintenance Manual page 329

3. TBC Y/C Delay Confirmation
Measuring equipment: Refer to next figure.
(1) Connect the video signal generator, measuring equipment, and video monitor as shown below.
Composite video
signal generator
BLACK BURST
a : Use the same length cables
(0.5 m)
C phase confirmation [to step (5)]
(2) Set the component waveform monitor to BOWTIE mode.
(3) Playback the bowtie signal portion (17:00 to 19:00) of the alignment tape CR5-1B or CR5-1B PS.
(DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS)
(4) Confirm the deviations A and B between each center marker and bowtie dip point of CH-1/CH-2 (Y/
B-Y) and CH-1/CH-3 (Y/R-Y).
If the specification is not satisfied, perform steps (6) through (20).
Specifications: A = 0 ± 10 ns
B = 0 ± 10 ns
(5) Stop the playback of the alignment tape CR5-1B/CR5-1B PS or eject it.
n
It is not necessary to eject the alignment tape when perform subsequent "4. VISC Phase Adjustment".
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
DNW
VIDEO INPUT
REF VIDEO
Y
VIDEO OUTPUT
B-Y
COMPONENT
R-Y
VIDEO OUTPUT
COMPOSITE 3
Connection in Y/C Delay Confirmation
Center markers
CH-1/CH-2 CH-1/CH-3
A
Component waveform monitor
EXT REF
CH-1 CH-2 CH-3
75 Z
a
75 Z
a
a
Video monitor
(terminated with 75Z)
B
6-7. TBC-23 Board Replacement
6-91