MagTek SWIPE READERS WITH RS-232 - Manual (Page 12)

Swipe Readers with RS-232 IntelliHead
6
For Rev A firmware, if any ‘one’ bit is found, but the track contains an error, an “E” will appear
in place of the track data, otherwise, there will be no transmission for that track. Starting with
Rev B firmware, an “E” will be transmitted for a track that contains an error only if the start
sentinel is found or at least 5 good characters are detected; otherwise, there will be no
transmission for that track. For example, if track 2 has an error and tracks 1 and 3 are good, the
display will look something like this:
%11111111111111111111?;E?+33333333333333333333?<0x0D>
If track 1 is blank, but track 2 is good and track 3 has errors, the display will be similar to the
following:
;22222222222222222222?+E?<0x0D>
If the data on the screen is not numeric or alphanumeric like the data above, check the
communication rate. If the alphanumeric characters are similar to those shown above, then the
unit is ready for use.