Measurement Computing Micro 488/EX rev.2.1 - Manual (Page 169)

Section 6 Controller Pass-Thru Operation
6.5
Some programs allow these parameters to be selected by the user.
Other graphics programs depend on the RS-232 version of the plotter
defaults. Usually, Hewlett Packard plotters use 9600 baud, 7 data bits,
1 stop bit, even parity and XON/XOFF serial control. Since these
plotters are available with serial interfaces, the operator's manual of
your IEEE plotter should contain this information.
2. The IEEE bus address of your plotter. This address is usually set by a
DIP switch located on the rear of the plotter. The first five switches set
the address which, for Hewlett Packard plotters, is usually address 5.
Refer to the plotter's operator's manual for exact information.
Set the Micro488/EX's internal DIP switches to match the parameters determined
above. Other parameters which should be selected include…
1. Talk Back Enabled.
2. Serial Terminators set to CR Only.
3. IEEE Terminators set to CR Only with EOI enabled.
The following shows the Micro488/EX's internal switch settings required to use a
Hewlett Packard 7580A plotter 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).