Battery Alarm Set Adjustment; Sample Pulse Phase Adjustment - Sony Betacam BKP-590 Installation And Maintenance Manual

2-4. IF-562 Board Adjustment

2-4-1. Battery Alarm Set Adjustment

Note :
• This adjustment is strictly performed at the factory, so do
not adjust except for malfunction of circuit.
Equipment : Digital voltmeter, Oscilloscope
DC variable power supply
Preparation:
• Supply about +13 Vdc from the DC variable power
supply via the EXT DC connector.
Adjustment Point
Adjustment Procedures :
1. Turn 1RV2 fully clockwise.
2. Measure voltage at TP28 (GND:TP39/extension
board:EX-108).
3. Adjust the voltage at TP28/EX-108 for +11.20 ±0.05 V.
4. Slowly turn 1RV2 counterclockwise observing the
waveform at TP7/extension board on the oscilloscope.
5. Adjust 1RV2 so that an 1.0-kHz, 11.2-Vp-p rectangle
wave (11.2 Vp-p, 1 kHz) just appears.
TP8
TP8
–
N/P
S2
TP3 RV1
GAIN1
GAIN2
PR NOR/OP
AUTO/
MANU
CAM A/B
RET
S1
VTR
TALK
IF-562 board (A side )
BKP-590
: 1RV2/IF-562 (A-3)
E1
TP7
S3
TP5
TP2
TP1
RV2

2-4-2. Sample Pulse Phase Adjustment

Equipment
Setting of oscilloscope : Signal : CH1, 0.2V/div,
Test Point
Adjustment Point
Specification
CH2 (SYNC)
CH1 (SAMPLE)
2-4. IF-562 Board Adjustment
: Oscilloscope
CH2, 0.2V/div
Mode : ALT
Time : 5µs/div
Trigger: CH1(+)
: CH2:CN1-19 Pin/IF-562
CH1:CN1-18 Pin/IF-562
: 1RV1/IF-562 (A-2)
: A = 10.0 ±0.5µs
50%
50%
A
2-15(E)