Sony Betacam SX DNW-A100 Maintenance Manual page 327

System SYNC position adjustment [to step (6)]
(2) Set the composite waveform/vector monitor as follows:
WAVEFORM mode, SWEEP: 2H, MAG ON, INPUT: CH-A, EXT REF
(3) Display the H SYNC signal part of CH-A side on the composite waveform/vector monitor, and align
50% position at falling edge readability.
(See the next figure.)
(4) 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)
(5) Change the observation signal (channel) of the composite waveform/vector monitor from CH-A to
CH-B, then adjust the 50% position at falling edge of H SYNC signal of CH-B to the identical
position as CH-A using the SYNC control VR on the sub control panel.
Composite waveform/vector monitor
(6) Stop the playback of the alignment tape CR5-1B/CR5-1B PS.
System SYNC phase adjustment [to step (11)]
(7) Set the composite waveform/vector monitor as follows:
SCH mode, INPUT: CH-A, EXT REF
(8) Align the SYNC phase of CH-A to 0 degree using PHASE knob of the composite waveform/vector
monitor. (See the next figure.)
n
Turn the PHASE knob so that the beam spot (SYNC) moves in the shortest route to 0 degree.
(9) 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)
(10) Change the observation signal (channel) of the composite waveform/vector monitor from CH-A to
CH-B, then adjust the SYNC (beam spot) of CH-B to 0 degree (the identical position as CH-A)
using the SC control VR on the sub control panel.
n
Turn the SC control VR so that the beam spot (SYNC) moves in the shortest route to 0 degree.
Composite waveform/vector monitor
0d
SYNC
DNW-A100/A50/A45
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
50% of falling edge
Composite waveform/vector monitor
0d
SYNC
DNW-A100P/A50P/A45P
6-7. TBC-23 Board Replacement
6-89