Sony DVW-790WS/790WSP manual VA Gain Adjustment, S35*PRESET WHT Color Temp P, Gamma → on

7-9. VA Gain Adjustment

7-9. VA Gain Adjustment

16:9 mode

Note

.Use an 89.9%-reflective chart in this adjustment as possible. (Refer to Section 7-1-4.)

.If a “16:9” chart is not keep on hand, shoot a‘‘4:3” chart so that the chart width is aligned with the underscanned monitor frame.

Preparation

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

.Shoot a grayscale chart (16:9) 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. Select the 16:9 mode.
PAGE	: S14*WIDE SCREEN
ITEM	: 16:9/4:3 MODE → 16:9

5. On the setup menu, set as follows.

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

6.Select portion C by using the waveform monitor.

C

7.Set the waveform monitor to the CHROMA mode.

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

D

2. Equipment	: Oscilloscope
Test point	: TP1 (VA-191 board)

Setting point : 1Lens IRIS

	A
Spec.	: A = 320 ±8 mV

Setting After Adjustment

.On the setup menu, set as follows.

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

3.	On the setup menu, set as follows.
	PAGE	: S12*FUNCTION 1/2
	ITEM	: TEST OUT → G
4.	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

7-14

A

1

2

3

B

1

RV301

D E

C

RV201

1

1

TP1RV101

VA-191 board (A side)

DVW-790WS/709WS/707

DVW-790WSP/709WSP/707P P2V1