User's Manual

Psion Teklogix 7545 Hand-Held Computer User Manual C-9
Appendix C: Bar Code Settings
Decoded (Internal) Scanners
Decoded (Internal) Advanced Options
for battery powered applications, there will be a slight delay while the scanner powers up to
scan a bar code.
Low Power Timeout
To extend laser life, you can select the time the scanner remains active following a success-
ful decode. The scanner wakes from low power mode when a bar code is scanned—a
successful decode restores normal blinking.
This is only used if the unit’s Trigger Mode has been changed to Continuous On. If the
unit is used in a fixed mount this parameter might be used, but not if the unit is used as
a hand-held.
When you double-tap on this parameter, a dialog box is displayed in which you can choose a
value of 30 sec., 1 min., 2 min. or 3 min.
Parameter Scanning
Setting this parameter to on enables decoding of parameter bar codes.
Linear Security Level
This parameter allows you to select the security level appropriate for your bar code quality.
There are four levels of decode security for linear code types (e.g., Code 39,
Interleaved 2 of 5). Higher security levels should be selected for decreasing levels of bar
code quality. As security levels increase, the scanner’s decode speed decreases.
Double-tapping on this parameter displays a dialog box in which you can enter a value from
1 to 4.
Linear security level 1 specifies that the following code types must be successfully read
twice before being decoded:
Linear security level 2 specifies that all types of codes must be successfully read twice
before being decoded.
Note: This parameter is only used if the Trigger Mode has been set to Continuous On and
the 7545 is mounted in a fixed position; otherwise, ‘Low Power Timeout’ is not used.
Code Type Length
Codabar All
MSI Plessey 4 or less
D 5 of 5 8 or less
I 2 of 5 8 or less
Preliminary Draft 3