Kenwood TK-785, Руководство по обслуживанию

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51
TK-785
TERMINAL FUNCTION
CN7 (TX-RX Unit)
←→
CN502 (Control Unit)
Pin No. Name Function
1 W/N No function.
2 T/R TX/RX switch. H : Receive
3 MO Modulation signal.
4 TO Low speed data signal.
5 BEEP Beep.
6 8R NC (8V)
7 PSW Power switch.
8 DEO Receive signal to control unit.
9 MM MIC mute. H : MIC mute
10 AFO Receive signal from control unit.
11 ME MIC ground.
12 MI External MIC.
13 AHK Hook signal. H : Off hook
14 IGN Ignition signal.
15 SB 13.2V (E), 13.6V (K,M).
16 SB 13.2V (E), 13.6V (K,M).
17 8C 8V.
18 KEY TX signal.
19 CK Shift register clock.
20 DT PLL/Shift register/DA converter data.
21 RSSI RSSI signal.
22 LD PLL unlock detection.
23 ES Shift register enable.
24 EP PLL enable signal.
25 EN DA converter enable signal.
26 APTT No function.
27 CP PLL clock.
28 DTC No function.
29 TXD Serial data
30 RXD Serial data.
31 OE Serial data.
32 FSW Foot switch signal.
33 E Ground.
CN101 (VCO)
←→
TX-RX Unit
Pin No. Name Function
1 ST Switched transmit input. H : Transmit
2 HT RF output.
3 E Ground.
4 9CL 9V input.
5 8CL 8V input.
6 MD Modulation input.
7 CV Control voltage input.
CN501 (Control Unit)
Pin No. Name Function
1 E Ground.
2 5C Logic power (5V).
3 CS Chip selector signal. L : Option
4 CK Serial clock signal.
5 SID Serial data input.
6 (NC) Unused terminal.
7 (NC) Unused terminal.
8 LED(A) LED anode terminal.
9 LED(K) LED cathode terminal.
10 NC Unused terminal.
J501 (Control Unit)
Pin No. Name Function
1 BLC MIC key backlight control.
2 PSB 13.2V (E), 13.6V (K,M).
3 E Ground.
4 PTT/TXD PTT.
5 ME MIC ground.
6 MIC MIC signal input.
7 HOOK/RXD Hook detection
8 CM MIC data detection.