Flange Back Check; Picture Frame Setting - Sony DSR-250 Service Manual

7. Flange Back Check

Subject Siemens star
(2.0m from the front of the protection
glass)
(Luminance : approx. 300 ± 50 lux)
Measurement Point Check operation on TV monitor
Measuring Instrument
Specified Value Focused at the TELE end and WIDE
end.
Checking method:
1) Place the Siemens star 2.0m from the front of the protection
glass.
2) To open the IRIS, decrease the luminous intensity to the
Siemens star up to a point before noise appear on the image.
3) Shoot the Siemens star with the zoom TELE end.
4) Turn on the auto focus.
5) Check that the lens is focused.
6) Turn off the auto focus.
7) While observe the TV monitor, move the zoom to the WIDE
end and check that the lens is focused.

8. Picture Frame Setting

Subject Color bar chart
(Color bar standard picture frame)
(95cm from the front of the protection
glass)
Measurement Point Video output terminal
Measuring Instrument Oscilloscope and TV monitor
Specified Value A=B, C=D, t=0 ± 0.1msec
Switch setting:
1) ND FILTER ...................................................................... OFF
(The data of page: 6, address: 9D is "00".)
2) STEADY SHOT (Menu setting) ...................................... OFF
Setting method:
Order Page Address Data
1 6 2C 01
2 6 90 28
3 6 91 02
4 6 92 6E
5 6 93 49
6 6 01 79
7
8
9 6 01 00
Procedure
Set the data.
Set the data.
Set the data.
Set the data.
Set the data.
Set the data, and press PAUSE
button.
Adjust the camera direction, and
set to the specified position.
Mark the position of the picture
frame on the monitor display,
and adjust the picture frame to
this position in following
adjustments using "Color bar
standard frame".
Set the data, and press the
PAUSE button.
Check on the oscilloscope
1. Horizontal period
A=B
B
A
2. Vertical period
Color on the TV monitor
Color bar chart picture frame
5-20
C=D
C
D
Fig. 5-1-9.
t=0 ± 0.1msec
V
Fig. 5-1-10.
TV monitor picture frame
Fig. 5-1-11.