Posiflex LS-1000 - Manual (Page 116)

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OMNIDIRECTIONAL SCANNER PROGRAMMING GUIDE
Symbology Configuration
In this section, device can be programmed to recognize one or
more barcode symbologies automatically. If the scanner is
configured to support multiple barcode symbologies, the scanner
will discriminate different symbologies automatically.
However, to
improve scanning performance, you should enable only the
symbologies that will be in active use.