Kenwood 762G Service Manual

21TK-760G/762GINSTALLATION2. Accessory Terminal (TX-RX Unit)2-1. External Connector Accessory Terminal MethodNo. Name I/O Description NoteCN1 1 8C O DC 8V output2 5S O DC 5V output3 AUX5 O SMRD : Reset output *14 AUX6 O 5SC : 5S control (Cannot use) *15 NC – Non-connection6 AUX3 O SQ : Squelch detect output *27 AUX1 I PTT : External PTT input *28 AUX4 TXD TXD : Serial control data output *19 AUX2 RXD RXD : Serial control data input *1I DTC : Data channel control/External hook inputI CHDATA : Channel controlserial data input10 ALT I Alert tone input11 AFO O Receiver audio signal output12 AFI I Receiver audio signal input13 MII I Transmit audio signal input14 MIO O Transmit audio signal output15 GND – GroundCN3 1 HOR O Horn alert/call output2 E – Ground3 SB O Switched B+, DC 13.6Voutput, Maximum 1ACN4 1 DEO O Receiver detector outputLevel : 0.5Vrms(Standard modulation)2 DTC I Data channel control/External hook input3 IGN I Ignition sense input4 DI I Data modulation input5 ME – External microphone ground6 MI I External microphone input7 PTT I External PTT input, active low8 SQ O Squelch detect outputCN5 1 AM I Speaker mute input, active high2 MM I MIC mute input, active high3 EMG/TXS I EMG : Foot switch input, *3active lowCN7 1 PA/LI O Relay for PA function KAP-1controlO PA/LI ON : High, PA/LI OFF : Low2 SPO O Audio signal output to KAP-13 SPI I Audio signal input from KAP-1CN8 1 SP O Audio signal output tointernal/external speaker2 E – Ground*1 : SmarTrunk OMNI mode*2 : MDT mode*3 : Emergency mode3. Ignition Sense Cable (KCT-18 : Option)The KCT-18 is an optional cable for enabling the ignitionfunction. The ignition function lets you turn the power to thetransceiver on and off with the car ignition key.If you use the Horn Alert function or the Manual Relayfunction, you can turn the function off while driving with theignition key.3-1. Connecting the KCT-18 to the Transceiver1. Install the KCT-19 in the transceiver. (See the KCT-19section.)2. Insert the KCT-18 lead terminal ( ) into pin 3 of thesquare plug ( ) supplied with the KCT-19, then insertthe square plug into the KCT-19 connector ( ).2131361315KCT-18KCT-19Contact1 23Fig. 3