Sync And Data Extraction Level Adjustment (Dec-15 Board); Waveform On The Oscilloscope - Sony PCM-1630 Operation And Maintenance Manual

3-6. SYNC AND DATA EXTRACTION LEVEL
ADJUSTMENT (DEC-15 BOARD)
Equipment: Oscilloscope
Connection:
PCM-1630
COMPOSITE
DIGITAL OUT-1
(or
OUT-2)
COMPOSITE
DIGITAL IN A
BVU-BOODB etc.
VIDEO IN
VIDEO OUT
E-E MODE
DATA extraction level
Switch Settings:
Front Panel SW
PBMODE: A
DATA
cegion {
_)
DEC-I Board SW
SYNC region {
SW3:
CD
ON
(2)
ON
G)
OFF @OFF
Adjustment and Confirmation
1. Set both CH-1 and CH-2 of the oscilloscope to 0.5 V/
DIV and 20 J.LS/DIV ranges, and adjust so that the
GND levels are at the center of the graticule lines.
2. Connect CH-1 to TP12 (VIDEO signal), CH-2 to TP13
(SYNC extraction level) and trigger with CH-1.
3. Tum RVl and set the SYNC extraction level to the
center (approx. +0.45V) of the SYNC region.
4. Connect CH-2 to TP14 (DATA extraction level).
Waveform on the oscilloscope
5. Tum RV2 and set the DATA extraction level to the
center (approx. + 1.2 V) of the DATA region.
6. Connect CH-1 to TP8 (VIDEO signal), and CH-2 to
TP9 (SYNC extraction level).
7. Check that the SYNC extraction level is at the approxi-
mate center of the SYNC region.
8. Connect CH-1 to TPIO (VIDEO signal) and CH-2 to
TPll (DATA extraction level).
9. Check that the DATA extraction level is at the approx-
imate center of the DATA region.
For all of the above, connect the GND of CH-1 to EPl,
and the GND of CH-2 to EP2.
IBBBBI
SW3
TP9
0 0
TPB
PCM-1630 (UC/AEP)
TP11
0 0
TP10 EP1
0TP12
0
RV1 ()
0
Q
0
TP14
0
TP13 RV2
EP2
DEC-15 BOARD -component side-
3-9