Appendix F
Parallel Interface
The GQ-3500 is equipped with a Centronics compatible parallel
interface, described in this appendix. You may purchase an optional
serial interface from your dealer. Installation and operating
instructions for your serial interface come packaged with the interface
card and are not included here.
In most cases, the parallel interface will work without any
changes. However, you can change several options on the interface.
This appendix describes the options and how to change them.
DIP Switch 4
DIP Switch 4 controls several functions of the parallel interface.
This DIP switch is located on the back of the interface, so you don’t
have to remove the interface to access it. Figure F-1 shows the location
of DIP switch 4. Table F-1 shows the functions of the switches.
Typically, you will not have to make any changes to these
switches. The factory settings work for most applications.
Figure F-1. DIP Switch 4 on the back
of
the interface
Parallel
Interface
F-1
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