the appropriate configuration letter and use and to change the setting. The baud
rates and printer types and other printer related configurations currently implemented are
shown in Table 8.1. All configuration settings are retained in non-volatile RAM and
many only need to be set once.
Configuration B sets the printer baud rate (which must match that of the printer) and
configuration P sets the printer type (see section 8.1) Configuration P0 is for use with
printers that are not otherwise supported (ie are not Epson, IBM or Apple compatible),
and only outputs ASCII text with no control codes other than Line Feed (ASCII 10) and
Form Feed (ASCII 12). All graphics and highlights will be lost, and configurations for
page length and line spacing will be ignored, but this should enable printing on virtually
any printer, including daisy-wheels! This mode can also be useful for transferring data to
a computer without any programming by directing serial input to a file using a terminal
emulator or a copy command and then pressing
. ASCII character set
Configuration N (50-99) sets the page length in units of 1/6" (the standard line spacing
on most printers). For 11" fan-fold paper, or A4 paper in a sheet feeder, set N66 (this is
the default value). For continuous A4 paper set N70.
Configuration M (0-12) determines the top margin and is useful when printing on headed
paper. The number determine the number of 1/6" blank lines output at the top of each
page (1/6" regardless of the line spacing setting). M0 is the default which doesn’t leave a
top margin.
Configuration I determines the number of lines per inch and defaults to 6. Setting I7, I8
or I9 gives 7.2, 8 or 9 lines per inch respectively and is useful when a printout will not fit
on a single page at 6 lines per inch but will with more lines per inch (although 8 and 9
lines per inch look rather squashed)
Configuration D1 will change the distortion printout to read in % rather than dB (but can
be overridden by pressing
when the distortion results are displayed) and
configuration G and H allow the graph scaling and graph height to be set in dB/cm and
cm respectively (note that these values are not exact and are generally rounded to the
nearest cm to give an approximate indication). Setting configuration H0 will cause the
graphs to be omitted while options H1 - H3 print a small graph reducing print time.
Configuration X1 will cause the date heading to be printed in the heading (see section
3.21 &3.22 for details).
Printed graph Wide graph Graph scale
Configuration E determines the printed graph width. E1 (the default) prints a normal
width graph while E2 prints an extended width graph with the frequency response table
printed beneath it. The actual width depends on the type of printer, but Epson printers
will print 6cm or 12cm graphs for configurations E1 and E2 respectively.
Configuration F determines graph fitting on the printout and can be set to ensure that the
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8. Using Printers
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