Spender DHS3600, Руководство по обслуживанию, Страница: 8 / 32

Service manual SPENDER DHS3600
8
ADJUSTMENT PROCEDURES
VCO SECTION
Item Condition Measurement Adjustment Specifications
Test Equipment Terminal Parts Method /Remarks
1.Setting 1) Power supply voltage
Battery terminal: 7.4V
2.VCO lock 1) CH: TX Lo Digital Voltmeter
C319 Adjust to 2.0V
Voltage 2) CH: TX Hi Digital Voltmeter
3) CH: RX Lo Digital Voltmeter
C306 Adjust to 2.0V
4) CH: RX Hi Digital Voltmeter
TRANSMITTER SECTION
Item Condition Measurement Adjustment Specifications
Test Equipment Terminal Parts Method /Remarks
1.Transmit 1) CH: TX Lo RF Power meter ANT L10, L13 Adjust it to
Power PTT: ON Ammeter 4.5W Check
2) CH: TX Hi RF Power meter ANT L10, L13 Adjust it to
PTT: ON Ammeter 4.5W Check
2.Transmit 1) CH: TX Center Frequency ANT VR2 Adjust to
Frequency PTT: ON counter ±500Hz or less
3.Modula- 1) CH: TX Center Modulation ANT VR1 Adjust to ±5kHz
tion analyzer
Oscilloscope MIC
Audio Signal
Generator
RECEIVER SECTION
Item Condition Measurement Adjustment Specifications
Test Equipment Terminal Parts Method /Remarks
1. Sensiti- 1) CH: RX Lo Oscilloscope ANT L1, L2, Adjust to the min.
vity CH: RX Center Distortion meter SPK L20, L21 Distortion and
best
CH: RX Hi Signal to noise
ratio