Sony DVW-709WS/709WSP, DVW-790WS/790WSP 7-9. VA Gain Adjustment

7-14 DVW-790WS/709WS/707

DVW-790WSP/709WSP/707P P2V1

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

2. Equipment : Oscilloscope

Test point : TP1 (VA-191 board)

Setting point :1 Lens IRIS

Spec. : A = 320 ±8 mV

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)

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.

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.

Setting After Adjustment

.On the setup menu, set as follows.

PAGE : S12*FUNCTION 1/2

ITEM : GAMMA → ON

7-9. VA Gain Adjustment

VA-191 board (A side)

RV101

RV201

TP1

RV301