Specifications

Chapter 7— IPL Command Reference
IPL Programmer’s Reference Manual 149
Bar Code, Select Type (continued)
Using ,m1 to Select the Number of Columns
,m1 is the number of columns of data characters. The range for ,m1 is 0 to
30 and the default is 0. If you select zero, the printer provides the number
of columns needed to create a symbol that is as close to a square as
possible.
Note: When you select zero, the printer selects a height magnification that
is three times the width magnification. The specifications of PDF417
recommend these magnification values for creating a symbol that you can
scan easily.
Using ,m2 to Select an Error Correction Level
,m2 determines the level of error correction. Each level provides a certain
number of detection characters, which can detect and recover a specific
number of faulty characters. The range for ,m2 is 0 to 9. The default is 9
and allows the printer to automatically select the appropriate level.
The level of error correction that works best for your data depends on the
amount of characters in your symbols. If you decide to select your own
error correction level, you will need to estimate the number of characters
since they are formed by compressing the raw data you send to the printer.
In general, 1.8 alphanumeric characters generate one symbol character. If
you are using numeric data, 2.9 digits generate one data symbol character.
Intermec recommends that you leave the error correction level at the
default setting of 9. This setting lets the printer select a level, between level
2 and level 5, that provides the most efficient error correction of your data.
The printer bases the level selection on the number of symbol characters
your data generates.
The following table shows the m2 values (error correction levels), the
recommended data amount that you should use for each value, and the
number of error correction characters that it generates.