Kenwood NX-720H(G) Service Manual

Also see for Nexedge NX-720H: Instruction manual Instruction manual Instruction manual

Contents

NX-720H(G)/720H44ADJUSTMENTItem Panel test mode PC test modeMeasurement AdjustmentSpecifications/RemarksTest-equipment Unit Termi-nal Unit Parts Method5. Sensitivitycheck1) CH-Sig: 1-1SSG outputWide 5k:–117dBm (0.32μV)(MOD: 1kHz/±3kHz)Narrow:–117dBm (0.32μV)(MOD:1kHz/±1.5kHz)1) Test ChannelChannel: 1Test SignalingMode: AnalogSignaling: 1SSG outputWide 5k:–116dBm (0.35μV)(MOD: 1kHz/±3kHz)Narrow:–115dBm (0.40μV)(MOD:1kHz/±1.5kHz)SSGAF VTVMOscilloscopeDistortionmeter4ohmDummyloadANTExt.SPconnec-torCheck 12dB SINAD ormoreCommon SectionItem Panel testmode PC test modeMeasurement AdjustmentSpecifications/RemarksTest-equipment Unit Ter-minal Unit Parts Method1. Setting 1) DC voltage:13.6V2) SSG standard modulation[Wide] MOD:1kHz,DEV:3kHz[Narrow] MOD:1kHz,DEV:1.5kHz2. ReceiveAssistThis adjust-ment can beperformed onlyPC test mode.1) Adj item:[Receive Assist]2) Adj item:[Low1],[Low2],[Low3],[Center1],[Center2], [Center3],[High1],[High2],[High3]Press [Apply All]button to store theadjustment value.[PC testmode][ ], [ ][PC test mode][Automatic Adjustment]Press [ Tune AssistVoltage ] button.Press [ Apply All ] but-ton to store the adjust-ment value after theautomatic adjustmenthas fi nished.[ Manual Adjustment ][ V ] indicator on thePC window showsVCO lock voltage.Change the adjustmentvalue to get VCO lockvoltage within the limitof the specified voltage.Note:Confi rm the VCO lockvoltage approximately3 seconds after theadjustment value ischanged.2.5V±0.1V[PC test mode]Press [Apply All]button to store theadjustment valueafter all adjustmentpoint was adjusted.Check!The assist adjust-ment value must bebetween from 50 to3800.3.TransmitAssistThis adjustmentcan be per-formed only PCtest mode.1) Adj item:[Transmit Assist]2) Adj item:[Low1],[Low2],[Low3],[Center1],[Center2], [Center3],[High1],[High2],[High3]PTT: Press [Trans-mit] button.Press [Apply All]button to store theadjustment value.