Scanning Techniques; Scan Led Indicators - Psion Teklogix 7545 User Manual

chapter. "Scanning Techniques" on page 59 outlines the mechanics of a successful scan. In
addition, review "Scan LED Indicators" on page 59 to better understand how to interpret
whether or not a bar code has been successfully scanned. Finally, "Troubleshooting" on
page 60 provides some helpful suggestions should the scan fail.
3.6.1

Scanning Techniques

Note: The scanning techniques described here apply to internal and external scanners.
• Hold the scanner at an angle. Do not hold it perpendicular to the bar code.
• Do not hold the scanner directly over the bar code. In this position, light can reflect back
into the scanner's exit window and prevent a successful decode.
• Scan the entire bar code. If you are using a 1D or PDF laser scanner, make certain that
the scan beam crosses every bar and space on the bar code, including the margins on
either end of the symbol.
• If you are using a 2D imaging scanner, make certain the red, oval shaped framing mark
is centered within the bar code you want to scan.
• When using imaging scanners, do not move the scanner while decoding the bar code.
Movement blurs the image.
• Hold the scanner farther away for larger bar codes.
• Hold the scanner closer for bar codes with bars that are close together.
3.6.2

Scan LED Indicators

The scanner LED (the lower-left LED) indicates whether or not your scan is successful. The
LED behaves as follows:
• Scan In Progress: scan LED displays solid red colour.
• Successful Scan: scan LED displays solid green colour and turns off when the scan is
ended.
• Unsuccessful scan: scan LED flashes red.
A bar code icon appears on the screen during a scan. While the scanner beam is active, the
onscreen message states: SCANNING. If you want to turn off the onscreen message, disable
"Scan Indication" in the Options tab of the Scanner Settings menu in the Control Panel
When the scan is successful, the bar code data is displayed on the screen until the scan
button (or pistol trigger) is released, but only if "Scan Result" is turned on in the Options tab
of the Scanner Settings menu in the Control Panel.
Preliminary Draft 3
Psion Teklogix 7545 Hand-Held Computer User Manual
Chapter 3: Getting To Know Your 7545

Scanning Techniques

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