H Phase Adjustment; Sync Phase Adjustment - Sony CCU-TX7 Service Manual

4-2-3. H Phase Adjustment

Equipment : Oscilloscope (CHOP mode)
Video signal generator
(Color Bar signal)
To be extended : ES-20 board
Preparation :
. Gen-lock .
. Input color bar signal of video signal generator to the
GENLOCK connector on the CCU-TX7/TX7P.
Test point : CH1 pin 78 (GND : pin 77)/
extension board
CH2 pin 100 (GND: pin 99)/
extension board
Adjusting point : 1RV7 (H PHASE)/ES-20 board
Adjustment Procedure :
1. Adjust 1RV7 (H PHASE)/ES-20 board so that the width
T1 is 0 ± 0.1 µs.
50%
Pin 78
(CH-1)
Pin 100
(CH-2)
T1
4-4

4-2-4. SYNC Phase Adjustment

Object : Overall white
(white portion of the pattern box)
Equipment : Waveform monitor
To be extended : ES-20 board
Preparation :
. Adjust the zoom control at "TELE" so that the white pattern
feame matches the underscanned picture frame on the
screen.
. In case of RCP-TX7
IRIS AUTO Button (Control panel) → "ON"
. In case of COU-TX7
IRIS AUTO/MANUAL switch (Control panel)
Test point : VBS 1 OUT connector/CCU rear panel
Adjusting point : 1RV2 (SYNC PHASE)/ES-20 board
1RV3 (SYNC WIDTH)/ES-20 board
1S2 (H BLKG)/ES-20 board
Specification : [For NTSC]
T1 = 1.35 ± 0.1 µs (1RV2)
T2 = 4.7 ± 0.1 µs (1RV3)
T3 = 10.9 ± 0.1 µs (1S2)
[For PAL]
T1 = 1.55 ± 0.1 µs (1RV2)
T2 = 4.7 ± 0.1 µs (1RV3)
T3 = 12.0 ± 0.1 µs (1S2)
[For NTSC]
T3
20IRE 20IRE
4IRE
50%
T1 T2
→ "AUTO"
[For PAL]
T3
350mV 350mV
50%
T1 T2
CCU-TX7 (E)/V1