|Re: IR Printers 82240A vs 82240B|
Message #4 Posted by James M. Prange (Michigan) on 2 June 2006, 9:46 p.m.,
in response to message #1 by Han
Note that although the ASCII characters match in the two character
sets, the non-ASCII characters (128-255 decimal) don't. The 48 and
49 series include the OLDPRT command to remap, where possible, the
new calculators' character set to the 82240A's character set, and
otherwise the remapping is to character 127. All characters
actually used in built-in command names are remapped correctly.
The remapping string is stored in the reserved variable PRTPAR,
and you can change it if you prefer. If you run OLDPRT and then
print to an 82240B, the remapping will be incorrect; in this case
just purge PRTPAR (the default PRTPAR will be created it as
needed), or change the remapping string to "", the empty string.
Of course a pair of escape sequences for switching character sets
were added; these are ignored by the 82240A. The 82240B uses the Roman 8 character set by default,
so older calculators work just fine with it. Any printing (except
by the CR command, and perhaps the PRLCD command) from the 48
series starts out with the escape sequence to switch to the new
character set, so it works fine with them too (as long as the
remapping string is empty). If you print to it with a 48 series,
and then, without doing a reset or power OFF/ON, print to it from
a calculator using the Roman 8 set, it will use the wrong
Besides adding the modified ECMA-94 (ISO-8859) Latin 1 character
set, some of the characters were modified to avoid having
characters with descenders meet the top of characters in the next
Also added is a "low-power" mode. When running on battery only, it
switches to this mode after about ten minutes of inactivity. It
doesn't switch to this mode when external power is supplied.
A visible red "power on" LED is added, but note that this is
turned off in the "low-power" mode. Unless you want to retain mode
settings or data still in the input buffer, I advise switching the
printer off when you're through using it; even "low-power" mode
must use "some" power.
The dot on the power switch seems to be red on the 82240B, and
orange or green on the 82240A.
The "ID letter" at the end of the self-test is G on the 82240Bs
that I've seen, and D or not present on the 82240As.
Of course there could be internal changes to either the 82240A or
Scans of the Owner's Manuals for both models are included in the
latest MoHPC CD ROM set / DVD, and additional information is
Edited: 3 June 2006, 5:02 a.m. after one or more responses were posted