Kenwood NX-720 Service Manual

Also see for NEXEDGE NX-720: Installation guide Instruction manual Technical details Service manual Instruction manual

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NX-720(G)/72052ADJUSTMENTItemCondition Measurement Adjustment Specifications/RemarksPanel tuning mode PC test mode Test-equipment Unit Terminal Unit Parts Method4. RSSIreference*5[NXDN VeryNarrow]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 forAnalog Narrow-3dB(MOD: 1kHz/±1.5kHz)1) Adj item:[RSSI Reference(NXDN Very Nar-row)]2) Adj item: [Low],[Low’], [Center],[High’], [High]SSG output: 12dBSINAD level forAnalog Narrow–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.Adjust with the ana-log signal.*5: Because RSSI Reference (NXDN Narrow) is adjusted by adjusting RSSI Reference (Analog Narrow), it is not necessary to adjust RSSI Reference(NXDN Narrow).5. OpenSquelch *6(Squelchlevel 5)[AnalogNarrow]1) Adj item: [SQL]Adjust: []2) Adj item:[S.QL][S.Q.L][S.Q.L.][S.Q.L._.][S.Q.L._. _.]SSG output: 12dBSINAD level(MOD: 1kHz/±1.5kHz)1) Adj item:[Open Squelch(Analog Narrow)]2) Adj item: [Low],[Low’], [Center],[High’], [High]SSG output: 12dBSINAD level(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.“Open Squelch”will not be adjustedcorrectly if MODand Deviation arewrong.Remark:During production,a fi xed value is writ-ten.·Analog Wide 4k[S.QL]→ 147[S.Q.L]→ 147[S.Q.L.]→ 147[S.Q.L._.]→ 147[S.Q.L._._.]→ 147·Analog Narrow,Wide 5k[S.QL]→ 138[S.Q.L]→ 138[S.Q.L.]→ 138[S.Q.L._.]→ 138[S.Q.L._._.]→ 138[AnalogWide 4k]1) Adj item: [SQL]Adjust: []2) Adj item:[S.QL][S.Q.L][S.Q.L.][S.Q.L._.][S.Q.L._. _.]SSG output: 12dBSINAD level(MOD: 1kHz/±2.4kHz)1) Adj item:[Open Squelch(Analog Wide 4k)]2) Adj item: [Low],[Low’], [Center],[High’], [High]SSG output: 12dBSINAD level(MOD: 1kHz/±2.4kHz)[AnalogWide 5k]1) Adj item: [SQL]Adjust: []2) Adj item:[S.QL][S.Q.L][S.Q.L.][S.Q.L._.][S.Q.L._. _.]SSG output: 12dBSINAD level(MOD: 1kHz/±3kHz)1) Adj item:[Open Squelch(Analog Wide 5k)]2) Adj item: [Low],[Low’], [Center],[High’], [High]SSG output: 12dBSINAD level(MOD: 1kHz/±3kHz)[NXDN VeryNarrow]1) Adj item: [SQL]Adjust: []2) Adj item:[S.QL][S.Q.L][S.Q.L.][S.Q.L._.][S.Q.L._. _.]SSG output: 12dBSINAD level forAnalog Narrow -4dB(MOD: 400Hz/±1.1kHz)1) Adj item:[Open Squelch(NXDN Very Nar-row)]2) Adj item:[Low],[Low’], [Cen-ter], [High’], [High]SSG output: 12dBSINAD level forAnalog Narrow-4dB(MOD: 400Hz/±1.1kHz)Adjust with the ana-log signal.This item is adjustedunder the conditionthat MOD is “400Hz”and Deviation is“±1.1kHz” due to thecircuit confi guration.Remark:During production, afixed value is written.171 (Fixed)