Sony DVW-709WS/709WSP, DVW-790WS/790WSP manual VA Gain Adjustment, S35*PRESET WHT

8-9. VA Gain Adjustment

Note

Use an 89.9%-reflective chart in this adjustment as possi- ble. (Refer to Section 8-1-4.)

Preparation

.OUTPUT/DCC switch (inside panel) → CAM/ON

.Shoot a grayscale chart in the full underscanned monitor frame.

.WHITE BAL switch (inside panel) → PRST

.AUTO W/B BAL switch (front panel) → BLK (Perform the automatic black balance adjustment.)

.On the setup menu, set as follows.

PAGE	: S35*PRESET WHT
ITEM	: COLOR TEMP <P> : 3200
ITEM	: R GAIN <P>	: 0
ITEM	: B GAIN <P>	: 0
Adjustment Procedure
1. Equipment	: Oscilloscope
Test point	: TP1 (VA-191 board)
Setting point : 1Lens IRIS
Spec.	: A = 320 ± 8 mV

A

8-9. VA Gain Adjustment

4. On the setup menu, set as follows.

PAGE	: S12*FUNCTION 1/2
ITEM	: TEST OUT → ENC
ITEM	: GAMMA → OFF

5.Select portion C by using the waveform monitor.

C

6.Set the waveform monitor to the CHROMA mode.

7.Equipment : Waveform monitor

Test point	: TEST OUT connector
Adj. point	: 1RV101 (VA-191 board (R GIAN))
	1RV301 (VA-191 board (B GAIN))
Spec.	: Minimize carrier leakage D by using
	the variable resistors alternately.

D

Setting After Adjustment

.On the setup menu, set as follows.

PAGE	: S12*FUNCTION 1/2
ITEM	: GAMMA → ON

2.	On the setup menu, set as follows.
	PAGE	: S12*FUNCTION 1/2
	ITEM	: TEST OUT → G
3.	Equipment	: Waveform monitor
	Test point	: TEST OUT connector
	Adj. point	: 1RV201 (VA-191 board (G GAIN))
	Spec.	: B =	100	± 2 IRE (NTSC)
		B =	700	± 10 mV (PAL)

B

A

1

2

3

B

1

RV301

D

C

RV201

1

1

TP1RV101

E

DVW-790WS/709WS/707

VA-191 board (A side)

8-11

DVW-790WSP/709WSP/707P P2V1