Chapter 6
Programming Via Configuration Bar Code Symbols
6–23
Laser Redundancy Check
When the laser redundancy check is enabled, two consecutive, identical decodes
of a symbol must occur (after the laser scanner is triggered) before a good read
is recognized by the decoder.
When disabled, only one decode is required. The redundancy check produces
greater immunity to substitution errors when scanning poor quality labels.
*Default is
Laser Redundancy Check Off
.
Enter
Exit
Laser
Redundancy
Check
Laser Connection Detection
Use this function to automatically determine the type of scanning device
connected to the decoder.
If a laser scanner is detected, a combination of high pitched tones is produced.
For wands, a low pitched combination is heard.
For more information, refer to the
Power Up Sequence
found in Chapter 4.
*Default is laser connection detection
Off
.
Note: When using a hand–held laser scanner or Catalog No. 2755–L2 scan
head with Laser Connection Detection enabled, do not trigger either device during
power up or reset. If you hold the trigger, the decoder will act as if a wand is
connected. The decoder will not recognize any laser scanners until it is reset by
sending an escape sequence, or by turning the decoder OFF and then ON.
Enter
Exit
Laser Connection
Detection On
Continuous Read Mode
When enabled, the laser is turned on continuously instead of waiting for the trigger
to be pulled. Scanning, decoding, and transmitting decoded messages occur
continuously.
Certain functions can now only be performed periodically. Examples are
responding to commands such as to sound a tone or to send a no–read response if
a symbol has not been decoded within the laser shutoff delay period. The shorter
the laser shutoff delay, the more often system functions are performed. System
functions are also performed every time there is a good read.
When disabled, the trigger is used to initiate and terminate laser scanning.
Note: Do not use this function with a Catalog No. 2755–G5 Hand–Held Laser
Scanner.
Note: When using a Catalog No. 2755–L2 Scan Head, the Package Detector
must be disconnected. The laser is ON continuously. If the laser makes several
sweeps, several decoded messages will be sent. If only one decode message per
symbol is required, enable the single read mode and allow the host to control decoded
transmissions using the
Enable Next Read
command.
*Default is continuous read mode disabled.
Enter
Exit
Enable Continuous
Read Mode
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