4. video signal system adjustment (rc-86 board), 4-1. sd-sdi output vco adjustment – Sony HDCU-900 User Manual
Page 55
3-11 (E)
HDCU-900 MM
3-4. Video Signal System Adjustment
(RC-86 Board)
3-4-1. SD-SDI Output VCO Adjustment
Measure : Frequency counter
Note
After replacing IC508 or IC510 on the RC-86 board only,
perform this adjustment.
Preparation
. Board extension : RC-86 board (front side)
. COR501 (B-8)/RC-86 → FREE RUN (Short between 2-
pin and 3-pin.)
. Connect the measure as shown in the following figure.
. After turning on the power, wait for 10 minutes at least
and start adjustment.
Probe
Oscilloscope
Frequency
counter
CH2
IN
CH2
OUT
IN
Adjustment Procedure
1.
Measuring point : TP501 (A-7)/RC-86
Adjusting point :
1RV501 (A-7)/RC-86
Specifications :
27.0
±0.2 MHz
2.
Measuring point : TP502 (A-8)/RC-86
Adjusting point :
1RV502 (A-8)/RC-86
Specifications :
27.0
±0.2 MHz
Note
After finishing the adjustment and waiting for 10 minutes
at least, confirm that each specification is satisfied.
If the specifications are not satisfied, perform the adjust-
ment again.
Setting after Adjustment
COR501 (B-8)/RC-86
→ NORMAL
(Short between 1-pin and 2-pin.)
A
B
C
D
E
F
G
H
J
K
L
M
1
2
3
4
5
6
7
8
9
S803
S801
S802
S811
1
1
R
V353
R
V350
R
V352
1
TP603
TP352
R
V601
COR601
TP350
1
TP501
R
V501
1
TP502
R
V502
COR501
1
TP201
RV201
TP703
RV701
Suffix:14
_
Suffix:14
_
1
1
RC-86 board (A side)
3-4. Video Signal System Adjustment (RC-86 Board)