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Appendix A
IBM PC
To connect a stand-alone computer to your printer through the
25-pin serial interface requires a null modem cable. The following
tables show the suggested
pinouts
for a null modem using DTR for
the IBM PC/XT and IBM PC/AT or compatible computers. The
cable has a
25pin
male connector on the printer end and either a
25-pin
or g-pin female connector on the computer end.
Computer
25 or
g-Pin
Male 25-Pin Female
25 or
g-Pin
Female
25-Pin
Male
Serial Cable
Fig. A.1
Serial Cable
Plnouts:
RS-232C
Pi No.
Name
1
Chassis Ground
2
Transmit Data
3
Receive Data
4 Request To Send (optional)
5
Clear To Send
6
Data Set Ready (optional)
7
Signal Ground
8
Carrier Detect
20
Data Terminal Ready (optional)
Cable
Pinouts
A-l
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