6-112
DNW-A22/A22P
3. Composite Video Output Level Adjustment (Another System)
Measuring equipment: Oscilloscope (Band width limit: ON)
n
If the composite waveform monitor corresponding to another system is available, be sure to use it.
In this case, the connection is the same connection as “1. Composite Video Output Level Adjustment”.
(1) Connect the oscilloscope (and video monitor) as shown above figure’s Connection 1.
(2) Set the oscilloscope as follows:
CH-1:
DC 200 mV/DIV, 10
µ
s/DIV
Trigger: CH-1,
_
slope, coupling: LINE
(3) Playback the 100 % color-bar portion (0:00 to 10:00) of the alignment tape SR5-1 or SR-5-1P.
SR5-1: for DNW-A22P
SR5-1P: for DNW-A22
(4) To enter the maintenance mode, press S1101 (G-1) on the SS-63 board.
(5) Enter A2 : AUDIO/VIDEO ADJUST.
(6) Enter A20 : VPR VR.
6-8. VPR-17 Board Replacement
Oscilloscope
Video monitor
.
Connection 1
(terminated with 75
Z
)
Oscilloscope
Video monitor
(terminated with 75
Z
)
.
Connection 2
DNW
1
2
BNC T adapter
BNC T adapter
75
Z
DNW
VIDEO OUTPUT
COMPOSITE 2
VIDEO OUTPUT
COMPOSITE
CH-1
CH-1