Triax Transmission System Adjustment; 1.0-Mhz Modulation Circuit Adjustment; 1.4-Mhz Demodulation Circuit Adjustment - Sony HSCU300RF Service Manual

5-6.

TRIAX Transmission System Adjustment

5-6-1.

1.0-MHz Modulation Circuit Adjustment

Frequency Adjustment
Preparation
• Disconnect the camera.
• If the camera is connected, turn off the CAMERA POWER switch on the inside panel.
• Connect the measuring equipment as shown in the figure.
CH2
Probe
IN
Oscilloscope
Adjustment
Equipment: Frequency counter
Test Point:
• TP1501 (A-2)/DM-152 board
• GND: E14 (B-1)/DM-152 board
Adjusting Point: LV1501 (A-2)/DM-152 board
Specification: 1000 ±5 kHz
E14
1
TP1501
2
LV1501
3
4
5
6
A B C D
DM-152 board (Side A)
5-6-2.

1.4-MHz Demodulation Circuit Adjustment

Preparation
• Disconnect the coaxial cable from the connector CN3901 on the DM-152 board, and then connect the FM signal
generator to CN3901.
• FM signal generator settings
Carrier frequency: 1.4 MHz
AF frequency: 1 kHz
Output level: -15 dBm
Dev: ±0 kHz
HSCU300RF/HSCU300R
CH2 IN
OUT
Frequency counter
E F G
5-14