Dec-122/128 Board Adjustment (Bksr-2030); Sdi Free Running Frequency Adjustment - Sony VideoStore VSR-2000 Service Manual

5-5. DEC-122/128 Board Adjustment (BKSR-2030)

5-5. DEC-122/128 Board Adjustment
(BKSR-2030)
5-5-1. SDI Free Running Frequency
Adjustment
Connection
VSR-2000
DEC-122/128 board
TP551
Preparation
. Turn on the power of the VSR-2000 and warm up the
unit about 10 minutes.
. S551 (J-11) /DEC-122/128 → ON
Adjustment Procedure
Equipment : Frequency counter
Test point : TP551 (J-9)/ DEC-122/128
Adj. Point : 1RV551 (J-11)/DEC-122/128
27 ± 0.1 MHz
Spec. :
Setting after Adjustment
S551 (J-11) /DEC-122/128 → OFF
5-26 (E)
Oscilloscope
CH2
IN
CH2
OUT
IN
Frequency counter
11
1
RV551
10 9 8 7 6
S551
TP511
DEC-122/128 board (A side)
5 4 3 2 1
A
B
C
D
E
F
G
H
J
K
VSR-2000