Kenwood NXR-800 Service Manual

Also see for NEXEDGE NXR-800: Brochure Instruction manual Instruction manual Instruction manual Instruction manual

Contents

NXR-80036ADJUSTMENTAlignmentItem 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-wired 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. VCTCXOLock Voltage1) REF LowSSG frequency: 10MHz–10ppm (9.99999MHz)SSG output: 0dBmSSGDVMTX REF INREF CV(CN401)Check 1.5V or more2) REF HighSSG frequency: 10MHz+10ppm (10.00001MHz)SSG output: 0dBm3.5V or less3) MOD LowSSG frequency: 10MHz–10ppm (9.99999MHz)SSG output: 0dBmREF INMB_CV1(CN303)1.5V or more4) MOD HighSSG frequency: 10MHz+10ppm (10.00001MHz)SSG output: 0dBm3.5V or less6. TransmitVCO LockVoltage(Adjustment)1) A: Low DVM TX CV TX L128 Adjust the interval ofthe L128.1.35~1.55V2) B: Low L108 Adjust the interval ofthe L108.1.35~1.55V7. ReceiveVCO LockVoltage(Adjustment)1) A: Low DVM RX CV1 RX L28 Adjust the interval ofthe L28.1.30~1.35VMake the adjustments afterinserting the insulating tubein the L28 and L30 coils andapplying the high frequencyvarnish.2) B: Low L30 Adjust the interval ofthe L30.1.50~1.55V