Measurement Computing Serial488A - Manual (Page 42)

3.8
An IBM PC based Graphics System
The following shows the Serial488A's internal switch settings required to use a
Hewlett Packard 7580A plotter with AutoCad™ from AutoDesk on an IBM PC or
compatible. Because PC and compatibles output RS-232 levels, the shorting DIP
jumper should be set to the RS-232 position (J206).
Selecting RS-232 Signal Levels - Serial488A
J205 J206
RS-422 RS-232
Shorting Plug