Sony BVP-550, Руководство по обслуживанию

Страница: 295 / 924

4-21 (E)
BVP-550
4-2-17. Auto Iris 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
• AUTO/MANU switch (on the lens)
→
AUTO
• 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
Adjustment Procedures:
1. Adjust the auto white balance.
WHITE BAL switch (on the side panel)
→
A
AUTO W/B BAL switch (on the front panel)
→
WHT
2. Set the menu as follows, and adjust the APL ratio by
using the MENU SEL switch.
MENU : Operation
PAGE : Auto Iris/Auto Knee (?6)
ITEM : APL Ratio
Specifications
: Adjust the auto-iris operation mode
depending on the application.
Note : Automatic iris operation mode
setting can be done from the average
level to peak-to-peak level of the
video signal.
99
→
average level
–99
→
peak-to-peak level
3. Set the menu as follows, and adjust the auto-iris level
by using the MENU SEL switch.
MENU
: Operation
PAGE : Auto Iris/Auto Knee (?6)
ITEM : Iris Override
→
Off
Adjustment Point:
MENU : System config
PAGE : Iris (S6)
ITEM : Level
Specifications
: A = 100
±
2 IRE (for NTSC)
A = 700
±
14 mV (for PAL)
(Waveform Monitor)
Resetting after Adjustment:
• WHITE BAL switch (on the side panel)
→
PRST
4-2. Adjustment for Installation of OHB
4-2-17. Auto Iris Adjustment