Kenwood NXR-700 Service Manual

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

Contents

NXR-70086ADJUSTMENTItem ConditionMeasurement AdjustmentSpecifications / RemarksTest-equipment Unit Terminal Unit Parts Method15. HighTransmitPower(Pre ADJ)1) Center Power meterPCRear TX ANT PCADJValue: 1024 Fixed value writingFinal VR2 25W ±0.5W16. CouplerADJ1) Center DVMPower meterFinal REF Final VR1 Adjust to the mini-mum value.17. HighTransmitPower(Max powerlimit ADJ)1) Center Power meterPCRear TX ANT PCADJValue: 1024 Fixed value writingFinal VR2 30.0W ±1.0W18. HighTransmitPowerFrequency1) Low2) Center3) HighAttach the EXCITER/FINALshield cover.Power meterAmmeterRear TX ANT PCADJ25.0W ±0.5W10.0A or less19. LowTransmitPowerFrequency1) Low2) Center3) HighAttach the EXCITER/FINALshield cover.5.0W ±0.1W5.5A or less20. Deviation(The transmis-sion VCO bandis separatedinto A and B.3-points foreach, i.e., totalof 6-points shallbe adjusted.)Modulation pattern: 100Hz square signalConnect the deviation meter tothe TX ANT end via the ATT.Deviation meter settingHPF: OFFLPF: 15kHzDe-emp: OFFDetector: (p-p)/21) A: Low2) A: Center3) A: High4) B: Low5) B: Center6) B: HighDeviationmeterOscilloscopePCRear TX ANT PCADJ±1.10kHzAdjust it into cleansquare wave withchanging “Sub-audible Gain” and“Audible Gain”.±0.05kHzConnect the deviation me-ter to the TX ANT end viathe ATT.Exit “Deviation” screen to “TestMode” screen, then set testsignaling mode to be “NXDN”and signaling number to be “3”.Set Wide/Narrow drop down listto be “Narrow”. Set test channelto be “1”.Deviation meter settingHPF: OFFLPF: 15kHzDe-emp: OFFDetector: +peak, –peakPush “Transmit” button, thenmeasure the deviation.Check ±3.06kHz±0.20kHzClean sine wave.