QUANTUN QP-650 Plus, Service Manual

Page: 52 / 69

QP-650 Plus Part list1
- 52 -
Adjustment Description
The radio can be adjusted by manual adjustment. Manual adjustment procedure is as follow. (Refer to
“All reset mode” and “manual adjust mode” in the section Software Specification .)
Instrument:
Radio Communication Test Set 1 set
3A/10V Power Supply 1 set
Digital Voltmeter 1 set
3A Ammeter 1 set
Adjustment:
1. Initializing:
It’s necessary to initialize the radio before alignment because there is no needed information in
EEPROM when the radio is manufactured. Please refer to the “all reset mode” in the section
Software Specification for details.
2. Adjustment:
Some items can be adjusted in conventional communication mode and the others in manual adjust
mode. Turn on the power, the radio enters conventional communication mode. If manual adjust
mode is enabled, Please refer to the section Software Specification.
User Mode
VCO
Item Condition
Measurement Adjustment
Specification/
Remarks Test Instrument Terminal Part Method
1. Setting Power supply 7.5V
2. TX VCO lock
voltage
1. Turn to CH6. Press PTT.
TX High Frequency
Digital Voltmeter CV
TC100
TC101
Turning 4.0V±0.2V
2.. Turn to CH4, Press PTT
TX Low Frequency.
Check 1.0V±0.2V
3. RX VCO lock
voltage
1. Turn to CH6. RX Hig Turning 4.0V±0.2V
2. Turn to CH4, RX Low
Check 1.0V±0.2V