Level Dependent Adjustment - Sony BVP-550 Maintenance Manual

4-2. Adjustment for Installation of OHB

4-2-10. Level Dependent Adjustment

4-2-10. Level Dependent Adjustment
Note:
• Perform this adjustment on the customer's preferences, if
necessary.
Equipment : Waveform monitor
Test Point : TEST OUT connector
Object
: Grayscale chart
Preparations:
• Connect the waveform monitor to the TEST OUT
connector.
• 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 : Detail 1 (P2)
: Detail → On
ITEM
: Level Dep. → On
ITEM
Adjustment Procedures:
1. Iris of the lens: A = 90 ±2 IRE (for NTSC)
A = 630 ±14 mV (for PAL)
(Waveform Monitor)
4-14 (E)
2. Set the menu as follows, and adjust the level depen-
dent by using the MENU SEL switch.
MENU : Paint
PAGE : Detail 1 (P2)
ITEM : Level Dep.
Specifications: Turn the MENU SEL switch (on the
front panel) once to –99, and slowly
turn it for increment until spikes at
portions B are just decreased.
(Waveform Monitor)
Note:
After this adjustment is completed, be sure to perform "4-
2-12. H/V Ratio Adjustment" and "4-2-13. Detail Level
Adjustment".
BVP-550