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Serial Port
RS232 connection is made through a labeled RS-232 Serial Port if installed. The connector is an industry-standard RS232. The
connector is a PC/AT standard 9-pin “D” male connector.
Pin Signal Description
1 DCD Carrier Detect
2 RXD Receive Data - Input
3 TXD Transmit Data - Output
4 DTR Data Terminal Ready
5 GND Signal/Power Ground
6 DSR Data Set Ready
7 RTS Ready to Send
8 CTS Clear to Send
9 RI or +5 VDC Ring Indicator - Input
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