Kenwood NXR-700 Service Manual

Also see for NEXEDGE NXR-700: Brochure Instruction manual Instruction manual Instruction manual Instruction manual

Contents

NXR-70052ADJUSTMENTAlignmentItem ConditionMeasurement AdjustmentSpecifications / RemarksTest-equipment Unit Terminal Unit Parts Method1. Setting 1) Connect the DC power output to the rear panel DC terminal (13.8V).2) Connect the front panel COM port (D-sub 9 connector) to the PC serial port with a cross cable.3) Activate the FPU to go to the test mode.2. TemperatureSensor1) Receive unit (Celsius orFahrenheit)Ther-mometerRoomtemper-atureRX PCADJMeasuring roomtemperature, writethe value with PC.2) Transmit unit (Celsius orFahrenheit)TX3. DriverAmplifierPower(Pre ADJ)1) Low2) Center3) HighPCADJValue: 1 Fixed value writing4. RF PowerDownDetection1) High2) LowPCADJValue: 1 Fixed value writing5. VCO LockVoltage1) REF LowSSG frequency: 10MHz–10ppm (9.99999MHz)SSG output: –10dBmSSGDVMTX REF INREF CV(CN401)Check 1.5V or more2) REF HighSSG frequency: 10MHz+10ppm (10.00001MHz)SSG output: +10dBm3.5V or less3) MOD LowSSG frequency: 10MHz–10ppm (9.99999MHz)SSG output: –10dBmREF INMB_CV1(CN303)1.5V or more4) MOD HighSSG frequency: 10MHz+10ppm (10.00001MHz)SSG output: +10dBm3.5V or less6. TransmitVCO LockVoltage(Adjustment)1) A: Low DVM TX CV TX L128 Adjust the interval ofthe L128.1.30V K1.50V K2±0.05V2) B: Low L108 Adjust the interval ofthe L108.1.30V K1.50V K2±0.05V7. ReceiveVCO LockVoltage(Adjustment)Pre ADJ1) A: Low DVM RX CV1 RX L28 Adjust the interval ofthe L28.1.1V K1.3V K2±0.05V2) B: Low L30 Adjust the interval ofthe L30.1.1V K1.3V K2±0.05V8. Fixation ofOscillationCoil1) Apply the high-frequency varnish to the adjusted Transmit VCO coil (L128, L108) and cover it with a shield cover.2) Apply the high-frequency varnish to the adjusted Receive VCO coil (L28, L30) and cover it with a shield cover.9. TransmitVCO LockVoltage(Check)1) A: High DVM TX CV Check 4.4V or less K3.8V or less K22) B: High