Kenwood TKR-751 Modification Information
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1 TERMINAL FUNCTION2 Modification Information (MOD) Version: 1.02 USA1.2 15-pin ConnectorThe 15-pin connector is located on the rear panel of theTKR-750/850/751/851 and you can connect externaldevices, such as an external speaker.Figure 1-2 15-pin connectorTable 1-2 Assigning signals to 15-pin connector! Connecting the external speakerFigure 1-3 Connecting the external speakerDisconnect the Jumper Lead and insert the externalspeaker's cable to the 12-pin and 6-pin of the 15-pinconnector. It needs to reconnect the Jumper Leadwhen using the internal speaker.123456789101112131415No. Pin name Input/Output Description1 SB Output Output the voltage between 10.8 to 15.6 V: 1 A max.2 SB Output Output the voltage between 10.8 to 15.6 V: 1 A max.3 NC --- No connection4 GND --- Ground5 GND --- Ground6 SPG --- Speaker ground7 RD Output Received Data output/ 1kohm Road, 10uF AC coupling, 80mVrms@1kHz 60% Dev.8 RSSI Output RSSI output; 0.2 to 2.5V9 SPI Input Internal Speaker input (short with SPO)10 Auxiliary Output 1 Output Open Collector Output; 16V /150 mA max.11 Auxiliary Output 2 Output Open Collector Output; 16V /150 mA max.12 SPO Output External Speaker output; 4 W @less than 5% distortion/ 4ohm Road13 Auxiliary Output 3 Output CMOS Level Output/ H=more than 4V/ L=less than 1V/ 0.2mAmax/ 5V pull-up14 Auxiliary Output 4 Output CMOS Level Output/ H=more than 4V/ L=less than 1V/ 0.2mAmax/ 5V pull-up15 Auxiliary Output 5 Output CMOS Level Output/ H=more than 4V/ L=less than 1V/ 0.2mAmax/ 5V pull-up123456789101112131415Ext.SP |
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