Lexmark Color Laser Forms and Bar Code Card Technical Reference Guide - Page 53
Rows: Default = 00x, Truncated: Default = 00x
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ECC by predetermined value: (Default = 00x) This byte designates error correction levels by predetermined values. Valid predetermined values are 0-8. If the value of this byte is anything other than 0-8, then the ECC level is set to 0. Predetermined values 00x 01x 02x 03x 04x 05x 06x 07x 08x Number of error code words 2 4 8 16 32 64 128 256 512 ECC can also be specified as a percentage. A valid non-zero ECC by percentage will override ECC by predetermined value. See "ECC by percentage, bytes 1 and 2: (Default = 0000x)" on page 51. Units enumeration for X dimension: (Default = 02x) This byte sets the units used in specifying the X dimension (the smallest element width). Supported values are 01x for 300 dpi units, 02x for 600 dpi units, and 03x for 1200 dpi units. X dimension, bytes 1 and 2: (Default = 0005x) These two bytes set the X dimension. To set the narrowest element to 5/300 of an inch, the Units enumeration must be set to 01x, and these two bytes will be 00x and 05x. Y ratio: (Default = 03x) This sets the bar height in terms of narrowest element width. If the X dimension is 5/300 inch, then to set the bar height to 15/300 inch, this byte will be 03x. Truncated: (Default = 00x) This byte determines if the right row indicator and stop pattern will be ommitted. A value of 01x activates truncation. All other values disable truncation. Rows: (Default = 00x) This can be used to manually set the number of symbol rows. Using aspect ratio, both rows and columns must be 00x. Valid non-zero values are 03x to 5Ax (3 to 90 decimal). A value of 3 will be used in place of any specified non-zero value less than 3, and a value of 90 will be used in place of any specified non-zero value greater than 90. If columns is a valid non-zero value, and rows is 0, Two-dimensional bar codes 50