Kenwood TK-2180 Modification Information

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

1 TERMINAL FUNCTION2 Modification Information Version: 1.13 USA1.2 26-pin Accessory Connector The 26-pin connector is located on the main PCB insideof the transceiver and you can connect external devices,such as an optional board, to this connector.Table 1-2 26-pin Accessory Connector Pin AssignmentPin. SignalNameInput/Output Description1 OPT1 Input/Output Output; L= less than 0.45V, H= more than 4.7V/25kohm loadInput; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V2 OPT3 Input/Output Output; L= less than 0.45V, H= more than 4.7V/25kohm loadInput; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V3 RXD1 Input Serial Data Input; L= less than 1.0V, H= more than 4.0V, TTL level4 TXD1 Output Serial Data Output/ PTT signal Output; L= less than 0.45V, H= more than 4.7V/25kohm, TTL level5 CK - Serial Clock Output (Not Available)6 OPT4 Output Output; L= less than 0.45V, H= more than 4.7V/25kohm load7 USEL Output UART Speed Select Output; L=19200bps fixed, H: 115200 bps8 OPT5 Output Output; L= less than 0.45V, H= more than 4.7V/25kohm load9 DGND - Ground10 AGND - Ground11 AI Input VGS Audio Input; Zin= more than 10kohm, 1Vpp max Input Range 0 to 5V12 AO Output VGS Audio Output; Zo=less than 10kohm13 AGND - Ground14 5A Output 5V Power supply Output; 78mAmax (TK-2180/3180)5E Output 5V Power supply Output; 78mAmax (TK-7180/8180)15 STON Input Side Tone Input; 1kHz 5Vpp16 DI/ANI Input Data Signal Input; Zin=more than 22kohm, 600+/-200mVpp@STD (TK-2180/3180)DTI Input Data Signal Input; Zin=more than 22kohm, 600+/-200mVpp@STD (TK-7180/8180)17 TCONT Input Speaker Mute Signal Input; L= less than 1.0V, H= more than 4.0V, Range 0 to 5V (TK-2180/3180)TCTL Input Speaker Mute Signal Input; L= less than 1.0V, H= more than 4.0V, Range 0 to 5V (TK-7180/8180)18 MAN DOWN Output Man Down Output; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V (TK-2180/3180)NC - NC (TK-7180/8180)19 INH Input Mic Mute Signal Input; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V (TK-2180/3180)AUDIH Input Mic Mute Signal Input; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V (TK-7180/8180)20 OPT2 Input/Output Output; L= less than 0.45V, H= more than 4.7V/25kohm loadInput; L= less than 1.0V, H= more than 4.0V, Input range 0 to 5V21 TXO Output Mic Signal Output; ZL= more than 22kohm, 130+/-50mVpp, Before Pre-Emphasis, AC coupled22 RXEO Output Audio Signal Output; ZL=more than 30kohm, 1+/-0.3Vpp, After De-Emphasis, DC coupled23 RXEI Input Audio Signal Input; Zin=more than 15kohm, 1+/-0.3Vpp, After De-Emphasis, DC coupled24 TXI Input Mic Signal Input; Zin=more than 22kohm, 130+/-50mVpp, Before Pre-Emphasis, AC coupled25 OPT6 Output Output; L= less than 0.45V, H= more than 4.7V/25kohm load26 SB2 Output Switched Battery power/ 7.5V typ, 100mAmax8C Output 8V AVR Output; 8.0V tpy, 100mAmax