Time Code System Adjustment - Sony SRW-5000 Maintenance Manual

7-3-3. Time Code System Adjustment

Tools
. Audio signal generator:
TEKTRONIX SG5010 or equivalent
. Audio analyzer:
AUDIO PRECISION System One/Two
or equivalent
. Osilloscope:
TEKTRONIX TDS3054B or equivalent
. Time code generator: SONY BVG-1600 or equivalent
. Time code reader:
SONY BVG-1500 or equivalent
. Band-pass filter (1 kHz)
. Alignment tape:
HR5-1B
. Recording tape:
BCT-SR series
n
For this recording tape, use a blank tape erased using the
tape eraser, etc. in advence.
Preparation
1. Check the settings.
(Refer to "7-3-2. Common Preparation".)
2. Check that the equipment has warmed up.
Before starting the adjustment, warm up the VTR and
equipment to be used through the power for 10 minutes or
more.
1. LTC Erasure Current Adjustment
Measuring equipment: Audio analyzer
Recording tape: BCT-SR series
n
For this recording tape, prepare a blank tape erased using
the tape eraser, etc. in advence.
1. Connect the audio analyzer (V rms measurement
mode) to TP201 (A-2) on the TC-104 board.
GND: E100/TC-104 (A-2)
2. Insert the recording tape.
3. Check the level on the audio level meter in the REC
mode.
1LV200/TC-104 (A-2)
Adj. point:
Specification: 120 mV rms
(Note: 48.0 ± 1.0 kHz)
4. Eject the recording tape.
SRW-5000/5500
2. LTC PB Level Check
Measuring equipment: Oscilloscope
Alignment tape: HR5-1B
1. Set and connect the oscilloscope as follows:
CH-1: TP102/TC-104 (A-4), DC 100 mV/DIV
GND: E100/TC-104 (A-2)
TIME: 100 µs/DIV
2. Insert the alignment tape HR5-1B.
3. During play back the alignment tape in the PLAY
mode, check the level on the oscilloscope.
Specification: A > 250 mV p-p
n
If specification is not satisfied, perform the "Section 6
Tape Path Alignment".
Oscilloscope
CH-1
4. Eject the alignment tape.
3
4
E400
TP400
TP401
TP102
TC-104 Board (Side A)
A
2 1
TP201
TP301
E100
TP200
A
TP100
LV200 TP101
B
C
D
E
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