Sony DNW-A100 Maintenance Manual page 134

3-8. Analog Betacam PB System Alignment
3-8-23. PB Video Phase Adjustment
6. Check the settings on the sub control panel.
CHARACTER switch
OUT REF switch
PROCESS CONTROL switch
. VIDEO switch
. CHROMA switch
. SET UP or BLACK LEVEL switch 8 PRESET
. Y/C DELAY switch
. CHROMA PHASE switch
KEY INHIBIT switch
7. Check the setup extend menu settings.
(NTSC model only)
ITEM-709: CAV LEVEL FORMAT
1. OUTPUT CAV LEVEL
ITEM-713: VIDEO SETUP REFERENCE LEVEL
0. MASTER LEVEL
3. BETACAM PB LEVEL
4. OUTPUT LEVEL
8. Check that the equipment has warmed up.
Before starting the adjustment, warm up the VTR and other
equipment through the power for 20 minutes or more.
1. Check the Initial Data
1. To enter the maintenance mode, press S1101(G-1) on
the SS-63 board.
2. Enter A37 : TBC VR, check that the data of "SQ Y
RZ" is the following data value.
NTSC model: 4C, PAL model: 4B
If not, set it to above data.
3. To perform the tape operation, press the SET button
once.
2. Set the System SYNC Position/Phase
1. Set the composite waveform/vector monitor as fol-
lows:
WAVEFORM mode, SWEEP: 2H, MAG ON,
INPUT: CH-A, EXT REF
2. Display the H SYNC part of CH-A on the composite
waveform/vector monitor, and align 50% position at
falling edge readability. (See Figure in step 4.)
3. Change the watching signal (channel) on composite
waveform/vector monitor to CH-B.
4. During play back the alignment tape in PLAY mode,
adjust the 50% position at falling edge of the H SYNC
of CH-B to the identical position as CH-A using the
SYNC control VR on the sub control panel.
3-98
PB portion: 50% bowtie signal (17:00 to 19:00) of
8 ON
8 REF
Composite waveform/vector monitor (WAVEFORM mode)
8 LOCAL
8 PRESET
8 PRESET
8 PRESET
8 PRESET
8 OFF
8 B-CAM
5. Stop the playback of the alignment tape.
6. Set the composite waveform/vector monitor as fol-
8 0.0%
lows:
8 MSTER
SCH mode, INPUT: CH-A, EXT REF
8 MSTER
7. Align the SYNC phase of CH-A to 0 degree using the
PHASE knob of the composite waveform/vector
monitor. (See Figure in step 9.)
n
Turn the PHASE knob so that the beam spot (SYNC)
moves in the shortest route to 0 degree.
8. Change the watching signal (channel) on the compos-
ite waveform/vector monitor from CH-A to CH-B.
9. During play back the alignment tape in PLAY mode,
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.
PB portion: The same as step 4
n
Turn the SC control VR so that the beam spot (SYNC)
moves in the shortest route to 0 degree.
Composite waveform/vector monitor (SCH mode)
NTSC model
0d
SYNC
10. Stop the playback of the alignment tape.
CR5-1B (NTSC) / CR5-1B PS (PAL)
50% of falling edge
PAL model
0d
SYNC
DNW-A100P/A50P/A45P
DNW-A100/A50/A45