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3-5-19. Detail Level Adjustment
Note: Be sure that "3-5-18. H/V RATIO Adjustment" is com-
pleted.
Object:
Grayscale chart
Equipment:
Waveform monitor
WHITE BAL switch/camera side
— PRESET
Preparation:
Test point:
VIDEO OUT
Adjusting point: @RV5 (DTL LEVEL)/IE-47 board
Adjustment Procedure
1.
Chart frame = Underscanned monitor frame
2.
Test point:
VIDEO OUT
Adjusting point: Lens iris
Specification:
A = 80 +2 IRE (for NTSC)
560 + 10 mV (for PAL)
3.
Adjust "LINE SELECTOR (15 LINES)" of waveform monitor
so that a selected line is overlapped with white level of the
grayscale chart of pattern box on the waveform monitor.
Adjust @RV5 (DTL LEVEL)/IE-47 board so that the DTL
level is 7 + 2 IRE (for PAL: 50 + 5 mV).
Note: If the two DTL levels are not balanced, take the
bigger one.
Note: If the grayscale chart is reflection type, the DTL
level is 11 +2 IRE (for PAL: 77 + 10 mV).
4.
Repeat "3-5-18.H/V RATIO Adjustment" and Detail Level
Adjustment several times.
DXC-637 (UC)
DXC-637P (EK)
3-19
3-6.
SYSTEM CONTROL SYSTEM
ADJUSTMENT
3-6-1.
Low Light Adjustment
Object:
Grayscale chart
Equipment: Waveform monitor
Preparation:
e WHITE BAL switch/camera side — PRESET
e Press the DISP CHG switch several times until the following
display appears on the viewfinder screen.
Applied Menu at 3 page
"ADVANCED MENUS"
*bb,
IRIS
INO:
Adjusting point: @RV4 (LOW LIGHT IND SET)/SW-724 board
Adjustment Procedure
1.
Chart frame = Underscanned monitor frame
2.
Test point:
VIDEO OUT
Adjusting point: Lens iris
Specification:
| White Level
= 42 + 5 IRE (for NTSC)
= 295 + 30 mV or less (for PAL)
3.
Rotate @RV4 (LOW LIGHT IND SET)/SW-724 board
slowly counterclockwise from the rightmost position until
the point where the "LOW LIGHT" indication on the
viewfinder screen.
4.
Open the iris contro! gradually and confirm that the white
level of the video signal is 50 IRE or less (for PAL: 350 mV
or less) when the "LOW LIGHT" indication disappears. If
the specification is not met, repeat procedure 3.
50 IRE or less
SW-724 BOARD
S7
Ja,
IRIS MODE!
RVI
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Qwwamy umm &
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$13
$9
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