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7-4.
VIDEO SYSTEM ADJUSTMENT
Adjust the video system in the following sequences as a rule. The
color video signal supplied from the pattern generator is used as a
video input signal for video system adjustment in the recording
mode. Make sure that sync and color burst signals meet
Mode
Playback
Signal
Alignment tape, color bar
VIDEO LINE OUT terminal
(75Q terminated)
Measurement Point
Specified Value
7159090 + 108 Hz
Note: Connect the frequency counter through a buffer amplifier
(oscilloscope, ete) of high input impedance (1 MQ or
more) and low capacity (10 pF or less).
Fig. 7-6.
3.
Sync AGC adjustment (YC-114 board)
Checking Method:
Mode
Recording or EE
1) Make sure that the frequency is 7159090 + 108 Hz.
| Signal
Color bar
_
2) Make sure that the amplitude is 610 + 130 mp-p.
Measurement Point!
| VIGEOLINE OUT temninal
(75Q terminated)
Measurement
e
= a
Equipment
Oscilloscope
610 + 130
4
mVp-p
Adjustment Element
| RVO02
7159090 + 108 Hz
Specified Value
1.00 + 0.05 Vp-p
Fig. 7-5.
Note: VIDEO LINE OUT should be terminated at 75Q .
Adjustment Method:
1) Adjust for 1.00 + 0.05 Vp-p using RV002.
White (100%)
1.00 + 0.05 Vp-p
|
Fig. 7-7.
=iye=
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