Sony HDCU-900 - Manual (Page 71)

3-27 (E)
HDCU-900 MM
3-6. HD Signal Input/Output Adjustment (HKCU-902)
3-6-4. A/D Conversion Level Adjustment
Measure : Oscilloscope
Note
Do not connect anything to the VTR connector of the camera.
Preparation
. The Y/P
B
/P
R
output level adjustment (section 3-6-1)
should be completed.
. Board extension : VDA-55 board (HDC-900/950)
. Board extension : ADA-59 board (rear side)
. Connect the Y/G OUTPUT1 connector on the ADA-59
and the RET INPUT1 connector on the ADA-59.
. S1 (F-2)/ADA-59 → C
. BARS button/MSU → ON
. Set on the setup menu of the HDC-900/950 as follows.
TOP MENU : MAINTENANCE
PAGE :
VTR-26P (M9)
ITEM : VIDEO SEL
→ RET (YPbPr)
. RET1 button/camera → ON
Adjustment Procedure
1. Measuring point : TP37/extension board (VDA-55)
Adjusting point :
1RV501 (B-3)/ADA-59
Specifications : A = 0
±5 mV
2. Measuring point : TP37/extension board (VDA-55)
Adjusting point :
1RV502 (B-4)/ADA-59
Specifications : B = 1400
±1 0 mV
A
Setting after Adjustment
. S1 (F-2)/ADA-59 → 0
. Return the setting on the setup menu of the HDC-900/
950.
. RET1 button/camera → Return to the original setting.
. BARS button/MSU → OFF
3-6-5. Clock (74 MHz) Duty Adjustment
Measure : Oscilloscope (20 MHz BWLimit: ON)
Note
This adjustment corresponds to the ADA-59 board with
part No. suffix -14.
Preparation
. Board extension : ADA-59 board (rear side)
Adjustment Procedure
Measuring point : TP601 (C-3)/ADA-59
Adjusting point :
1RV1 (E-3)/ADA-59
Specifications : C = 1.65
±0.04 Vdc
B
A
B
A =B
C
GND