Intergraph StudioZ GT RAX System Reference Manual page 63

Serial
1 2
The serial ports (also referred to as RS-232 asynchronous communications ports,
or COM ports) connect modems, printers, peripherals, and other computers to the system. The
serial ports (labeled 1 and 2) are 9-pin, male DB9 connectors. If connecting a serial device with a
25-pin DB25 connector, use a 25-pin to 9-pin adapter cable to mate with the serial port on the
system. Use only shielded cables with the serial ports.
6
9
Parallel
The parallel (LPT) port is used almost exclusively to connect a printer to the system.
However, it is compatible with any peripheral device designed to interface with a Centronics-type
parallel port. Use only shielded cables with the parallel port (DB-25).
1
14
25
13
Pin Signal
1
1 DCD - Data Carrier Detect
2 RD - Receive Data
3 TD - Transmit Data
4 DTR - Data Terminal Ready
5
5 Ground
6 DSR - Data Set Ready
7 RTS - Request to Send
8 CTS - Clear to Send
9 RI - Ring Indicator
Pin Signal Pin
1 -Strobe 10
2 Data 0 11
3 Data 1 12
4 Data 2 13
5 Data 3 14
6 Data 4 15
7 Data 5 16
8 Data 6 17
9 Data 7 18-25
Signal
-ACK - Acknowledge
Busy
PE - Paper Empty
+Select
-Auto FDXT - Auto Feed
-Error
-Init - Start
-SLCTIN - Select
Ground
53