Datalogic DX8210 Reference Manual Download

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User Interface

DX8210 Barcode Scanner

The code 123456 is considered contained in the following codes: 12305600,

00123056, 8812305688 because there is only one different character in the

compared string.
The code 123456 is not considered contained in 123066789 because there are two

different characters in the compared string.
CAUTION: If the Contained Filter parameter is used when Message Tx Selection (see

section “Special Host Protocol: None” on page 131 ) is set to On Decoding, the filter

conditions may be satisfied before the reading phase ends resulting in possible

successive multiple read errors.

Max Number of Different Characters

Enter a value from 0 to 5 in the field provided to define the maximum number of

different characters allowed to still consider a code as being included in another

one and therefore to be filtered.
If the number of different characters between the compared codes exceeds the

value of this parameter, the codes are considered as different and will not be

filtered (a multiple read of a different code occurs).
If the number of different characters between the compared codes is less than or

equal to the value of this parameter, the short code is considered as a sub-string of

the longer code and will be filtered (no multiple read occurs).
Examples:
If Max Number of Different Characters = 2:
The code 123456 read once, is considered the same as the following codes read

multiple times: 133056, 123546, 123457 because there are two or less different

characters by position in the compared codes.
The code 123456 read once, is not considered the same as the following codes

read multiple times: 153246, 103057, 654321 because there are at least three

different characters by position in the compared codes.

Voting Filter

Select the check box to reveal the

Max Number of Different Characters

field.

When selected, this filter attempts to eliminate false multiple reads by comparing

the number of different characters by position between two codes of the same type

and length. This condition implicates that reading a code of the same type and

length having very few different characters is probably a misread of the code itself

and therefore the code read the least number of times should be ignored, (should

not be considered as a multiple read of a different code).
This filter is based upon the following rules:
a multiple read condition occurs;
the two codes are of the same type;
the two codes have the same length;
the number of different characters by position is equal to or less than the number

defined by the

Max Number of Different Characters

parameter;

Message Tx Selection

(see section “Special Host Protocol: None” on page 131 ) must

be set to After Reading Phase Off.

Filter Out Low Height Codes

Select the check box to reveal the Minimum Readings Difference Between Scanners

field.
Background: This option was developed for the airports systems where there are

often tall bar height codes and low bar height codes with the same content

attached to baggage. Travelers will often remove the large, tall bar height code,

while leaving the smaller, low bar height codes attached to the bag. The next time

they travel they may have multiple low bar height codes on their baggage plus the

new tall bar height and low bar height codes for the new trip. This option instructs

the system to ignore low bar height codes, which are likely read only once or twice,

in favor of tall bar height codes, which will likely be read multiple times.
This is used in tunnel applications where multiple barcodes are read and there is a

need to filter out one of the barcodes. If less than x number of scanners read the

barcode, then it will be considered a NOREAD for that code.

Minimum Readings Difference Between Scanners

Enter the minimum number of scanners that must read a barcode for it to be

considered a valid read.