Epson Stylus 1520 User Manual page 162

Font
Use this setting to select which built-in font should be used as
the default. For more details, see "Selecting fonts" on page 8-12.
Pitch
With this setting, you can specify the default character pitch to
be used for printing.
I/F mode
Your EPSON printer has both a parallel and serial interface,
allowing you to share the printer between two computers.
If you select Auto, the printer automatically selects the
interface that is receiving data, and uses that interface until the
end of the print job. (A print job ends when no data is received
from the selected interface for the amount of time specified in
the Auto I/F wait time setting described below.)
Set this option to Parallel if you want the printer to ignore data
from the serial interface or to Serial if you want the printer to
ignore data from the parallel interface.
Select Option if you have installed an optional interface card
and want the printer to ignore data from the built-in parallel or
serial interface.
If you don't know what type of interface your computer
requires, check your computer manual.
Auto interface wait time
If you select Auto in the I/F mode option, you can set the
interface timeout to 10 seconds or 30 seconds.
The printer does not accept data from another interface unless
no data is received from the current interface for the period set
as the Auto interface wait time.
8-6
The Control Panel