Sony BVP-550 Maintenance Manual page 533

4-3-18. Knee and White Clip Adjustment
Equipment : Waveform monitor
Test Point : TEST OUT connector
Preparations:
• Connect the waveform monitor to the TEST OUT connector.
• OUTPUT/DCC switch (on the side panel) → CAM/OFF
• RGB/ENC switch (on the side panel) → ENC
• WHITE BAL switch (on the side panel) → PRST
• GAIN switch (on the side panel) → M(9 dB)
Adjustment Procedures:
1. Confirm the black level is 3 IRE for NTSC and 21 mV
for PAL.
2. Set the DISP switch (on the side panel) to MENU
while holding down the MENU SEL switch (on the
front panel).
3. Set the menu as follows, and adjust the knee point
level by using the MENU SEL switch.
MENU : Paint
PAGE : Knee/W.Clip (P6)
: Test → 1
ITEM
: White Clip → Off
ITEM
: Knee → On
ITEM
: Knee Max → On
ITEM
Adjustment Point:
ITEM : Point
Specifications: A = 98 ±2 IRE (for NTSC)
A = 686 ±10 mV (for PAL)
(Waveform Monitor)
4. Set the menu as follows, and adjust the knee slope
level by using the MENU SEL switch.
MENU : Paint
PAGE : Knee/W.Clip (P6)
: Knee Max → Off
ITEM
Adjustment Point:
ITEM : Slope
Specifications: B = 109 ±2 IRE (for NTSC)
B = 763 ±10 mV (for PAL)
BVP-550
(Waveform Monitor)
5. Set the GAIN switch (on the side panel) to H (18 dB).
6. Set the menu as follows, and adjust the white clip level
by using the MENU SEL switch.
MENU : Paint
PAGE : Knee/W.Clip (P6)
: White Clip → On
ITEM
Adjustment Point:
ITEM : White Clip
Specifications: C = 109 ±2 IRE (for NTSC)
C = 750 ±10 mV (for PAL)
(Waveform Monitor)
Resetting after Adjustment:
• Set the menu as follows.
MENU : Paint
PAGE : Knee/W.Clip (P6)
: Test → Off
ITEM
• GAIN switch (on the side panel) → L (0 dB).
File Store:
Execute the file store. Press the MENU SEL switch to
execute.
MENU : Reference File
PAGE : Reference File (R1)
ITEM : File Store
4-3. Overall Electrical Alignment
4-3-18. Knee and White Clip Adjustment
4-43 (E)