PGL Programmer's Reference Manual

User-Defined Variable Bar Code Ratios

The user-defined variable ratio for bar codes is an optional parameter. The

default ratios shown in Table 8 and Table 9 are overridden by the variable

ratio feature. Four- and eight-digit ratios can be used, depending upon the bar

code selected. Ratio data must be decimal values greater than 0. Enter R,

followed by the actual bar code ratio. A colon must separate each element of

the ratio.

Like standard bar code ratios, user-defined ratios are also interpreted from left

to right, measuring the size of each bar or space, in dot width, in the following

pattern:

narrow bar : narrow space : wide bar : wide space

. Enter either four or

eight values depending upon the bar code type. See Table 8 or Table 9 for the

number of values needed.

If the D parameter is specified, the ratios are represented in printer dots

instead of IGP dots (60 x 72 dpi).

NOTE: The IGP/PGL does not verify that ratio data creates acceptable wide/

narrow element relationships for bar code readability. When

designing unique ratio data, carefully plot wide and narrow ratios to

conform to readable bar codes.

Variable Ratio Sample

~CREATE;TEST

SCALE;CHAR

ALPHA

2;5;1;1;*Std. Ratio*

STOP

BARCODE

C3/9;X1;H7;D;3;5

ACODE39A

PDF;B;N

STOP

ALPHA

2;30;1;1;*VAR. Ratio*

STOP

BARCODE

C3/9;XR2:2:5:5;H7;D;3;30

ACODE39A

PDF;B;N

STOP

END

~EXECUTE;TEST;1

~NORMAL