Epson 4100 manual P4 Through P8 Integrity, Parameter Formula Principle

Operator's Guide E-23

P4 THROUGH P8 INTEGRITY

The tables that follow specify how parameters P4, P5, P6, P7, and P8 must relate to each other if you must make parameter adjustments using the Barcode Format command.

These tables apply only to Code 39 and Interleaved 2 of 5. Codabar settings are sufficiently complex to require careful analysis of the Uniform Symbol Description (USD-4) for Codabar. For UPC and EAN bar codes, we recommend the parameters be used without adjustment. Adjusting the symbols is likely to make them unreadable.

Parameter Formula		Principle
P5	> 2 ! P4 and	Wide bar is 2 to 3 times wider than narrow bar.
P5	" 3 ! P4
P6	= P4	Narrow space width equals narrow bar width.
P7	= P5	Wide space width equals wide bar width.
P8	# P4 and	Intercharacter gap is 1 to 9 times as wide as
P8	" (9 ! P4) + 3	narrow bar width.

Parameter		Valid Comparative Settings
P4	Narrow Bar	0	1	2	3	4	5
P5	Wide Bar	0,3	0,3	5,6	7-9	9-12	11-15
P6	Narrow Space	0,1	0,1	2	3	4	5
P7	Wide Space†	0,3	0,3	5,6	7-9	9-12	11-15
P8	Intercharacter Gap	0-9	0-9	2-18	3-27	4-36	5-45

†See formula above.