Kenwood NX-820 Service Manual

Also see for NEXEDGE NX-820: Instruction manual Technical details Instruction manual Instruction manual Quick start guide

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NX-82082ADJUSTMENTReceiver SectionItemCondition Measurement Adjustment Specifications/RemarksPanel tuning mode PC test mode Test-equipment Unit Termi-nal Unit Parts Method1.AF levelsetting[Panel test mode]1) CH-Sig: 1-1SSG output:–47dBm (1mV)(MOD: 1kHz/±1.5kHz)Wide/Narrow: Nar-rowBeat Shift: UncheckCompander: Un-check1) Test ChannelChannel: 1Test SignalingMode: AnalogSignaling: 1Wide/Narrow: NarrowBeat Shift: UncheckCompander: UncheckSSG output:–47dBm (1mV)(MOD: 1kHz/±1.5kHz)SSGDVMAF VM4DummyloadOscillo-scopeANTExt.SPcon-nector[Paneltuningmode][ ],[ ][PC testmode][ ],[ ]Volume Up/DownKey to obtain2.83V AF output.(2.0W @ 4 load)2.83V±0.3V( Volume Button in PCtest mode screen)2. Sensitivity 1 This adjustmentcan be performedonly PC test mode.1) Adj item:[Sensitivity 1]2) Adj item: [Low],[Low’], [Center],[High’], [High]Press [Apply All]button to store theadjustment value.SSGAF VM4DummyloadDistortionmeterOscillo-scopeANTExt.SPcon-nector[PC testmode][ ],[ ]Write the value asfollowings,[Low]:34 (Preset)[Low’]:75 (Preset)[Center]: 117(Fixed)[High’]: 155 (Fixed)[High]: 192 (Fixed)3. Sensitivity 2 This adjustmentcan be performedonly PC test mode.1) Adj item:[Sensitivity 2]2) Adj item: [Low],[Low’], [Center],[High’], [High]Press [Apply All]button to store theadjustment value.SSGAF VM4DummyloadDistortionmeterOscillo-scopeANTExt.SPcon-nector[PC testmode][ ],[ ]Write the value asfollowings,[Low]: 59 (Preset)[Low’]: 98 (Preset)[Center]: 137(Preset)[High’]: 179(Preset)[High]: 209(Preset)*Note*Note:12dB SINAD or more at -118.5dBm (Mod: 1kHz/±1.5kHz) with preset digit value at each adjustment point.If less than 12dB SINAD, execute the "Readjustment method 1" procedure at the failed adjustment point.[Readjustment method1]Decrease the digit value to get 12dB SINAD at -118.5dBm (Mod: 1kHz/±1.5kHz).If it is still NG, execute the "Readjustment method 2" procedure.[Readjustment method2]If the sensitivity is still NG for [Low] or [Low’] point by using method1, conduct the following procedure.1. Change the data of the failed adjustment point. ([Low] or [Low’]) to the following, and store it.Sens1 Sens2[Low] 54 69[Low’] 95 1082. Open Sensitivity1, and select the failed adjustment point.3. Set SSG to the following.SSG Output: -118.5dBm (0.266uV) MOD: 1kHz/±1.5kHz4. Decrease the data until the sensitivity becomes 12dB SINAD.5. Press [Apply All] button.4. RSSIreference*5[AnalogNarrow]1) Adj item: [RRSS]Adjust: []2) Adj item:[R.RSS][R.R.SS][R.R.S.S][R.R.S.S.][R.R.S.S._.]SSG output: 12dBSINAD level -3dB(MOD: 1kHz/±1.5kHz)1) Adj item:[RSSI Reference(Analog Narrow)]2) Adj item: [Low],[Low’], [Center],[High’], [High]SSG output: 12dBSINAD level –3dB(MOD: 1kHz/±1.5kHz)SSGAF VM4DummyloadDistortionmeterOscillo-scopeANTExt.SPcon-nector[Panel tuning mode]After input signalfrom SSG, press[ ] key to storethe adjustmentvalue.[PC test mode]After input signalfrom SSG, press[Apply] button tostore the adjust-ment value.