Output Filter Configuration - Microscan MS-4 User Manual

Output Filter Configuration

Definition: Output filtering is a method of providing a set of good read qualifiers and
also providing ordered output. There is a filter for up to the first 10 positions
in a multisymbol output. The first filter corresponds to the first symbol output
at the end of the read cycle. Each filter has has settings for the following
four parameters: Symbology Type, Symbol Length, Data, and Configuration
Database Number.
Serial Cmd: <K744,filter number,symbology type,length,wildcard,placeholder,data,
unused,database index>
Rules for Output Filter Configuration
Rule # 1
Each symbol that is decoded must match one of the filters before it can be saved to a read
cycle record. There is an exception to this rule, however, when the number of symbols
required for a read cycle exceeds the number of active filters. In such a case, unfiltered
symbols can be placed into unfiltered output positions.
For example, if the number of symbols required is 6 but there are only 4 active filters, the
last 2 positions can be filled by any (unfiltered) qualified symbol.
Rule # 2
The same filter setup can be used multiple times.
For example, filters 1, 2, and 3 can be set up to filter Data Matrix symbols, and the output
will occur in the order the symbols are decoded.
Rule # 3
All qualified symbols will be sorted and output in the matching filter position. If a symbol
matches filter 3, it will be output as the third symbol. If a filter does not have a matching
qualified symbol, a No Read message will be output in place of the symbol (assuming the
No Read message is enabled).
For example, if there is not a symbol that meets filter 3's requirements, then a No Read
message will be output in the third output position.
MS-4 Imager User's Manual
Output Format
14-9