Sony DXC-637 - Alignment: Sync Signal System; Sub-Carrier Frequency Adjustment; INT SC Phase Adjustment; Alignment: Encoder System Adjustments

3-3.
SYNC
SIGNAL
SYSTEM
ADJUSTMENT
3-3-1. Sub-Carrier Frequency Adjustment
Equipment: Frequency counter
To be extended: EN-122 board
Test point: TP1 (GND: E1)/SG-232 board
Adjusting
point:
@RV1
(SC
FREQ)/SG-232
board
Specification: 3,579,545 + 10 Hz (for NTSC)
4,433,618 + 10 Hz (for PAL)
3-3-2. INT SC Phase Adjustment
Note:
Stated
below
is
a
procedure
with
the
SC-H
phase
measuring
equipment
(Tektronix
1750/1751).
if
any
other
equipment
is
used,
perform
adjustment
at
the
following
adjustment
point
by
reading
the
instruction
manual
attached.
Equipment: SC-H Phase Equipment
To be extended: SG-232 board
Preparation:
e
Disconnect
the
verctorscope
and
connect
the
Tektronix
1750/1751
instead.
e Put the Tektronix 1750/1751 to SC-H mode.
Test point: VIDEO OUTconnector/camera side
Adjustment Procedure
Adjust
the
phase
relationship
between
SC
(Burst)
and
H
beam
spot
correctly
with
@RV2
(SC-H
PHASE)/SG-232
board.
{for NTSC]
[for PAL]
Note:
After
adjustment,
disconnect
Tektronix
1750/1751
and
connect
the verctorscope.
DXC-637 (UC)
DXC-637P (EK) 3-5
3-4. ENCORDER SYSTEM ADJUSTMENT
3-4-1. Carrier Balance Adjustment
Equipment: Verctorscope (MAX GAIN)
To be extended: EN-122 board
Preparation: OUTPUT switch/camera side — BARS
Adjustment Procedure
e Adjust @RV5 (| (V) CAL) and @RV9 (Q (U) CAL)/SG-232
board so that the beam spotis in the center of the vectorscope.
[for NTSC]
{for PAL]
$G-232 BOARD — COMPONENT SIDE -
eg er ial
CNi
FL2
Fut
(PHASE ADJ)
go RVS RVS AV2 RVI
qo (Q(V) CAL) (1(V) CAL) (SC-H) (SC FREQ)
| 4) @ Oo @
ef] ir: