Technical data

Block Diagram
A-6
Serial Interface Pin Assignments
Pin Number Function
1 Carrier Detect
2 Receive Data
3 Transmit Data
4 Data Terminal Ready
5 Signal Ground
6 Data Set Ready
7 Request to Send
8 Clear to Send
9 Ring Indicator
Parallel Interface
The parallel interface is implemented on the main logic board and is accessible
through the rear panel 25-pin f D-sub connector. This LPT port is an
AT
and
Centronics
compatible bi-directional parallel port. The user can select the printer port
to be set to either a PS/2 type bi-directional parallel port compatible mode or
extended parallel port (EPP/ECP) bi-directional mode. The table below lists the
parallel interface pin assignments. L denotes low true logic.