Sony BVP-550, Maintenance Manual

Page: 305 / 924

4-31 (E)
BVP-550
4-3-9. A/D Gain Adjustment
Equipment : Waveform monitor
Test Point : TEST OUT connector
Preparations:
• Connect the waveform monitor to the TEST OUT
connector.
• GAIN switch (on the side panel)
→
L (0 dB)
• RGB/ENC switch (on the side panel)
→
RGB
• R/G/B switch (on the side panel)
→
G
• Set the DISP switch (on the side panel) to MENU while
holding down the MENU SEL switch (on the front
panel). Set the menu as follows.
MENU : Paint
PAGE : Detail1 (P2)
ITEM : Detail
→
Off
PAGE : Gamma (P5)
ITEM : Gamma
→
On
PAGE : Knee/W.Clip (P6)
ITEM : Knee
→
Off
ITEM : White Clip
→
Off
Iris of the lens
: CLOSE
Adjustment Procedures:
1. Set the waveform monitor as follows.
• LUM mode
2. Set the menu as follows, and adjust the black level by
using the MENU SEL switch.
MENU : Paint
PAGE : Video Level (P1)
ITEM : Black [M]
Specifications
: A = 3
±
1 IRE (for NTSC)
A = 21
±
7 mV (for PAL)
(Waveform Monitor)
3. Adjust the auto black balance.
AUTO W/B BAL switch (on the front panel)
→
BLK
4. Set the menu as follows.
MENU : System config
PAGE : PR/VA/TEST (S3)
ITEM : TEST
→
2
5. Set the menu as follows, and adjust the A/D gain for G
by using the MENU SEL switch.
MENU
: System config
PAGE : PR/VA/TEST (S3)
ITEM : PR AD G [G]
Specifications
: The white level shall not be changed
even if the OUTPUT/DCC switch
(on the side panel) is changed over
between CAM and BARS.
A = B
(For NTSC)
(For PAL)
4-3. Overall Electrical Alignment
4-3-9. A/D Gain Adjustment