Microscan MS-890 User Manual page 117

Fixed Symbol Length Status (PDF417)
Used to increase data integrity by ensuring that only one symbol length will
Usage:
be accepted.
Definition: When enabled, the PDF symbol must contain the same number of characters
as the symbol length setting before it can be considered a good decode.
The scanner will ignore any symbol not having the specified length.
Serial Cmd: <K476,status,raster sweeps before decode
status,fixed symbol length,decode at end of read>
Disabled
Default:
0 = Disabled
Options:
1 = Enabled
Fixed Symbol Length (PDF417)
Definition: Specifies the exact number of characters the scanner will recognize.
Serial Cmd: <K476,status,raster sweeps before decode attempt,fixed symbol length status,
fixed symbol
Default: 10
Options: 1 to 2710
Note: Fixed Symbol Length Status must be enabled for Fixed Symbol
Length to take effect.
Decode at End of Read (PDF417)
Definition: Allows the user to specify that the decoding of the PDF417 symbol take
place after the requirements of End of Read Cycle have been satisfied.
This means that the scanner will accumulate information about the PDF417
candidate symbol but will not attempt to error-correct or translate the information
until the end of the read cycle.
Serial Cmd: <K476,status,raster sweeps before decode attempt,fixed symbol length status,
fixed symbol
Disabled
Default:
Options: 0 = Disabled
1 = Enabled
MS-890 Industrial Automation Scanner User Manual
length,decode at end of read>
length,decode at end of
attempt,fixed symbol length
read>
Symbologies
5-23