SCS PTC-IIex, Manual

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E Connector Pin-out
Appendix E
21 Connector Pin-out
This Appendix shows the connector Pin-out of the PTC. The view from the backside is
always displayed.
D.1 The power supply connector
The PTC can be powered from the coaxial low voltage socket, on the rear panel, where
the center conductor is positive, the outer conductor being connected to ground. The
center pin has a diameter of 2.1mm. The socket is designed for a plug with an outside
diameter of 5.5 mm.
Pin 1: DCD - Output.
Pin 2: TxD - Transmit data output. (to computer)
Pin 3: RxD - Receive data input. (from computer)
Pin 4: DTR - Input (RxD secondary serial port).
Pin 5: Ground (GND).
Pin 6: DSR - Output.
Pin 7: CTS - Input.
Pin 8: RTS - Output.
Pin 9: RI - Output (TxD secondary serial port).
D.2 The 9 PIN SUB-D socket
9
8 7 6
5 4
3 1 2
Figure D.1: RS232 Connections
D.3 The 8 pole DIN socket
Pin 1: Audio output from the PTC to the transmitter.
Pin 2: Ground.
Pin 3: PTT Output. (to transmitter PTT line)
Pin 4: Audio input from the receiver to the PTC.
(loudspeaker or appropriate AUX socket).
Pin 5: Optional power supply input.
Pin 6: Not Connected.
Pin 7: Not Connected.
Pin 8: Not Connected.
7
8
6
1
3
2
5
4
Figure D.2: Connections to the transceiver.
The socket outer screening is also connected to ground.
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