Ltc Recording Level Check - Sony DNW-A100 Maintenance Manual

3-11. LTC Alignment and Full Erasure Current Check (TC-96 Board)

3-11-3. LTC Recording Level Check

3-11-3. LTC Recording Level Check
Preparing tools
. Oscilloscope:
TEKTRONIX 2465B or equivalent
. Recording tape: BCT-SX series (Betacam SX cassette)
(Sony's standard products)
n
For this recording tape, prepare the virgin tape or no
recorded tape that erased using the tape eraser, etc. in
advance.
Preparation
1. Check the settings on the upper control panel.
8 LTC
LTC/AUTO/VISC
8 INT
INT/EXT
8 REGEN
PRESET/REGEN
FREE RUN/REC RUN 8 REC RUN
8 LOCAL (9P: unlit)
REMOTE/LOCAL
2. Check the settings on the sub control panel.
KEY INHIBIT switch 8 OFF
REC INHIBIT switch 8 OFF
3. Check that the equipment has warmed up.
Before starting the adjustment, warm up the VTR and
oscilloscope through the power for 10 minutes or more.
3-116
Recording Level Check
1. Set and connect the oscilloscope as follows:
CH-1: TP100/TC-96(A-2), DC 100 mV/DIV
GND: TP101/TC-96(A-3)
TIRG: TP325/SS-63(A-1), GND: E100/SS-63(A-1)
TIME: 100 µs/DIV
2. Insert the recording tape.
3. Check the level on the oscilloscope in recording on the
tape.
Specification: A = 60 ± 5 mV p-p
Oscilloscope
CH-1
SS-63 board (Side A)
E100 TP325
A B
TP308
ON
TP304
>EP–GW<
OFF
S101
A
TC-96 board (Side A)
TP100
TP101
DNW-A100/A50/A45
DNW-A100P/A50P/A45P