Sony BVP-550, Maintenance Manual

Page: 283 / 924

4-9 (E)
BVP-550
4-2-5. Master Black Adjustment
Equipment : Waveform monitor
Test Point : TEST OUT connector
Preparations:
• Connect the waveform monitor to the TEST OUT
connector.
• RGB/ENC switch (on the side panel)
→
RGB
• R/G/B switch (on the side panel)
→
G
Iris of the lens : CLOSE
Adjustment Procedures:
1. Set the waveform monitor as follows.
• LUM mode
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 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. Set the RGB/ENC switch (on the side panel) to ENC.
4. Adjust the auto black balance.
AUTO W/B BAL switch (on the front panel)
→
BLK
File Store:
Execute the file store. Press the MENU SEL switch to
execute.
MENU : Reference File
PAGE : Reference File (R1)
ITEM : File Store
4-2-6. Gamma Correction Adjustment
Equipment : Waveform monitor, Vectorscope
Test Point : TEST OUT connector
Object : Grayscale chart
Preparations:
• Connect the waveform monitor to the TEST OUT
connector.
• Connect the vectorscope to the PIX OUT terminal on the
waveform monitor.
• Shoot the grayscale chart so that the chart frame is
aligned with the underscanned monitor frame.
• RGB/ENC switch (on the side panel)
→
ENC
• 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 : Knee/W.Clip (P6)
ITEM : Knee
→
Off
Iris of the lens : A = 100
±
2 IRE (for NTSC)
A = 700
±
14 mV (for PAL)
Adjustment Procedures:
1. Set the RGB/ENC switch (on the side panel) to RGB.
Set the R/G/B switch (on the side panel) to G.
2. Set the menu as follows, and adjust the gamma
correction for (M) by using the MENU SEL switch.
PAGE : Video Level (P1)
ITEM : Gamma [M]
Specifications
: B = 55.5
±
2.0 IRE (for NTSC)
B = 420
±
14 mV (for PAL)
(Waveform Monitor)
4-2. Adjustment for Installation of OHB
4-2-5. Master Black Adjustment
4-2-6. Gamma Correction Adjustment