Kenwood TK-2180 Modification Information

Also see for TK-2180: Specifications Brochure & specs Instruction manual Instruction manual Service manual

Version: 1.13 USA Modification Information 31 TERMINAL FUNCTION1.3 25-pin D-Sub ACCConnector(TK-7180/ 8180 only)The 25-pin ACC connector is located on the rear panel ofthe TK-7180/ 8180 transceivers and you can connectexternal devices, such as the KDS-100, to this connector.Figure 1-2 25-pin D-Sub ACC ConnectorTable 1-3 25-pin D-Sub ACC Connector Pin AssignmentPinnumberSignalname Input/ Output Description1 NC/ RSSI - No Connection.RSSI can be sent after modification; Output level 0.8 - 2.3V).2 RXD1 InputSerial Data Input 1RS-232C Level, Input voltage range +/-30Vmax,L=less than 0.4V, H=more than 2.4V Zi=more than 5kohm3 TXD1 Output Serial Data Output 1RS-232C Level, L=less than -5V, H=more than 5V Zo=more than 5kohm4 AUX I/O 9 Input/ OutputAuxiliary I/O 9Input: Active Low with 47kohm Pull-Up to 5V, L=less than 0.8V, H=more than 4.2VOutput: Active Low with 47kohm Pull-Up to 5V, 0.2mAmax, L=less than 0.3V, H=more than 4.8VEMF5 DI InputData Signal Input60% of System Deviation with 2Vp-p input (Data input level is adjustable),Input Impedance=10kohm or more, DC coupled, Frequency Response =+2/-3dB,6 MI2 Input External Mic Input: 60% Deviation with 1kHz 5.0+/-2.5mV Input signal7 GND - Ground8 AUX I/O 8 Input/ Output AUX I/O 8: Same Level as AUX I/O 9.9 TXD2 Output Serial Data Output 2:C MOS Level, L=less than 0.7V H=more than 4.2V with 25kohm load, Zo=more than 1kohm10 RXD2 Input Serial Data Input 2C MOS Level, Input voltage range=+5/0 Vmax, L=less than 0.8V H=more than 4.2V11 GND - Ground12 AUX I/O 7 Input/ Output Auxiliary I/O 7: Same Level as AUX I/O 9.13 AUX I/O 6 Input/ Output Auxiliary I/O 6: Same Level as AUX I/O 9.14 SB - Power Output in conjunction with the Power SwitchDC 13.6V +/-15% 2.0Amax15 AUX OUT2 Output Auxiliary OUT 2Active Low, Open collector 500mAmax, Defualt=None, L=less than 0.3V16 AUX OUT1 Output Auxiliary OUT 1Active Low, Open collector 500mAmax, Defualt=None, L=less than 0.3V17 AFO Output RX Filtered Audio OutputDC coupled, AF low level output 700mVp-p typ with standard modulated signal receiving.18 GND - Ground19 DEO Output Detected Signal OutputDC coupled, 740 mVp-p typ with standard moduration signal, AF output level is adjustable.20 AUX I/O 5 Input/ Output Auxiliary I/O 5: Same Level as AUX I/O 9.21 AUX I/O 4 Input/ Output Auxiliary I/O 4: Same Level as AUX I/O 9.22 AUX I/O 3 Input/ Output Auxiliary I/O 3: Same Level as AUX I/O 9.23 AUX I/O 2 Input/ Output Auxiliary I/O 2: Same Level as AUX I/O 9.24 AUX I/O 1 Input/ Output Auxiliary I/O 1: Same Level as AUX I/O 9.25 ME - Mic Ground