Worth Data 701 RF manual How to scan a bar code, Laser and CCD Scanners

Appendix L

How to scan a bar code

The RF Terminal can be used with either a laser or a CCD scanner. Which one you choose is dependent upon your application and the quality and density of your bar codes. This section will include information on different scanners as well as how to use each one.

Laser and CCD Scanners

If you are using a laser or CCD scanner, technique is not critical. The scanners are “point-and-shoot”; you can’t miss. Upon triggering the beam, the laser and CCD scans the bar code multiple times (36 scans per second) until it has a good read, at which point it automatically shuts off. These scanners are more expensive, but virtually foolproof. They read from a distance, so they are much more convenient for distance shelf scanning or scanning in tight spots. Different laser scanners have different distance capabilities. Table M-1shows the comparison of all the laser and CCD scanners available from Worth Data.

	Scanner	Hi Density	UPC	40 mil	Paper	Retro-Reflective
		Code 39	100%	Code 39	100 mil	100 mil Code
					Code39	39
	LI50 CCD	0.5” – 4”	0.5 - 7”	1” – 12”	na	20” – 40”
	LZ300 Laser	0 – 6”	0 – 12”	2” – 41”	7” – 41”	28” – 7.5 ft.
	LZ400 Laser	0.5” – 9”	0 – 17”	3” – 44”	9” – 50”	18” – 9.5 ft.
	Integrated	1'" – 7"	0 – 10"	4" – 29"	10" – 32"	18" – 6.5 ft.
	Laser in
	Terminal
	PSC Long	7” – 11”	7” - 31”	11” – 9 ft.	24” – 15 ft.	48” – 17 ft.
	Range
		Table M-1. Scanner Comparison Chart
6 mil = high density		40 mil = low density 100 mil = very low density (with paper and retro-reflective label stock)

To scan a bar code using your laser or CCD scanner, (whether it be a handheld or integrated)

1.put your RF Terminal in One-Way mode with the host computer program not running; or even unplug the serial cable,

2.point the laser scanner at the bar code at about 6” away.

3.Pull the trigger (or push the button on an integrated model) and line up the beam on the bar code. If you don’t get a read, vary the distance of the scanner from the bar code by pulling up or moving down. The idea is to scan through the center of the bar code.

L-1