Bar Code Zone Setup dialog box
Use this box to name your bar code zone and change its settings. For
a complete explanation of each field, click the green field name.
Zone name
This name
identifies the bar code and appears in Index setup as BC_[zonename] in
the list of default values.
The bar code Label does not define
or identify an Index field. In the Job
Setup dialog box, all index fields must be defined in the Index tab.
To use a bar code for an index field, you must assign the appropriate
BC_[zonename] as a default value for the index field.—
enter the name for your new bar code zone.
Front or Back — select one using
the radio buttons.
Keep
bar codes with mask
The Keep bar codes with mask option
should be used when one or more Anywhere
bar code zones are defined. The bar code value is only retained for the
defined zone when it complies with the mask specified in the Keep
bar codes with mask field. This ensures that the bar code values
read on a page get assigned to the correct bar code zone.
This option is also useful when more than one bar code zones are in the
same physical location on a page but have different values and meanings
(e.g., a zone defined for a batch header sheet versus a zone defined for
a document header sheet). To comply with a specified mask, each character
of the bar code value must match the mask syntax for that character’s
position in the mask
.
For example, a mask of A<8>
will retain a bar code value of up to, but not exceeding, eight alphabetic
characters:
Bar Code Value Retained?
SURGERY Yes
ADMISSION No
— if applicable, enter a mask value.
Minimum length-
By default,
the Minimum length option is set
to the length of the tested bar code value. If a value is not found or
the value is equal to or greater than six characters, the default will
be set to “6.” It is recommended that the minimum
length parameter be set at six characters or fewer to allow the
software to retain bar code values in cases of a partial reading.
If the Partial Reading option is
not required or enabled, then the mask and minimum length settings can
be used in combination to restrict even further the bar code values that
are retained.
For example:
Mask: 9(10)
Minimum bytes: 6
retains bar code values between six and ten digits, while
Mask: 9(10)
Minimum length: 10
retains bar code values only if they are exactly ten digits.enter a number for the minimum length
of the bar code value.
Bar
code width and Bar code height
Making
an entry in one or both of these fields increases the performance of bar
code reading. If one of the dimensions is variable, enter "0".
The default bar code width and height is "0".
Bar code dimensions can vary depending on the amount of skew. Therefore,
it is recommended that you enter these values only when you are sure of
the dimensions of the bar code.
You must specify a bar code height for bar codes that are smaller than
40 pixels high (e.g., at 200 dpi, 40 pixels is 20/100 in.).
When specifying a bar code width and/or height, the tolerance is ±10% (e.g.,
if you specify 20/100 for the bar code height, any bar code between 18/100
and 22/100 in. will be detected). The values entered in these fields limit
the images from which bar codes or
text will be read to only those whose size falls in between these values.
This is useful when using bar code header sheets for document separation
and indexing that are significantly smaller than the rest of the pages
of the document.
This option can increase the performance of scanning into the bar code/OCR
application. When this option is enabled, the minimum default value is
1000 bytes and the maximum default value is 100,000 bytes.—if
the bar code has a fixed length or height, enter these values in 1/100ths
of an inch.
Bar code type
You may
also select additional bar code types that will be considered valid for
this bar code zone. Although it is unusual that more than one bar code
type would be found within a zone, it is possible to select multiple bar
code types. To view a list of bar code types, click
here.
The more bar code types you select, the slower your scanning performance.
When you draw a bar code zone location, the software searches the location
for all bar code types. When successful, the software sets the Bar
code type to the one found. Otherwise, a bar code type is not selected.
There are two exceptions to this
rule:
For Code 39 Extended and Code 39 HIBC bar codes, the software may set the
Bar code type to Code 39. As a
result, you may need to manually select Code 39 Extended and Code 39 HIBC.
For MSIPH bar codes, the software may set the Bar
code type to MSI. As a result, you may need to manually select
MSIPH.— select one or more bar code types.
Verify checksum
Checksum
characters help ensure the accuracy of bar code reading. Not all bar code
types support checksum verification. Bar code types that optionally support
checksum verification include:
Code 3 of 9
CODABAR
Interleaved 2 of 5
Some bar code types like PDF417, UPC, and EAN have a built-in checksum
routine that cannot be disabled.
If you disable Verify Checksum
for bar codes containing a checksum, the checksum value (usually the last
character of the bar code) will appear in the bar code value; otherwise,
the check digit will remain hidden.
If checksum verification fails during scanning, a bar code value is not
generated, causing the software index field audits to fail.—
enable checkbox if the bar code contains a checksum character. For information
how the software reads optional and mandatory checksum characters, click
here
Some bar code types, such as Code 128, have mandatory
checksum characters. The code is always present and must be
correct to read. Other codes such, as Code 39, have optional checksum
characters which then add an additional code when present.
To read invalid Code 128 symbols, you can select the Minimumpartial readcharacters
option. It will report the data characters even if checksum
fails. The invalid checksum will not be returned. When the
bar code has an optional checksum, it will not be validated by the software.
It will operate based on the bar code specification.
Selecting Minimum partial read characters
for a bar code with an optional checksum will return what it finds, whether
it is good or bad. There will be occasions when the bar code returns the
correct result but the checksum itself fails. Since the checksum is implicit,
it is not returned and cannot be directly tested..
Minimum partial read characters
If Minimum partial
read characters is enabled, enter the minimum number of characters
that will be allowed for a partial read. This is useful for bar codes
that are only used for document or batch separation where the absolute
value is less critical.
For indexing purposes, it is recommended that you define field masks and
minimum lengths. The software will not produce any bar code value if the
bar code is incomplete and the Minimum
partial read characters field is disabled.
Minimum partial read characters should not be used when Verify
checksum is enabled, as this may result in a bar code value being
generated when checksum verification fails.—enable
checkbox when you want the software to generate a bar code value, even
if a bar code is incomplete.
Filtering —
when reading barcodes from fax machines or other devices that may have
CCD pixel dropout, applying a filter may help the read rate if bars are
missing pixels. Selecting Filter1 will fill a gap in a bar of 1 pixel.
Filter2 will fill a gap of 2 pixels, etc.
Process
bar code by—
when set to Auto, the bar code
will be read in the scanner if possible. If the scanner reaches its maximum
number of bar codes or the bar code is not supported in the scanner, then
the bar code will be read by Capture Pro. When set to Capture Pro, the bar code will be read in the software.
Orientation
If your bar codes all share the same orientation
(i.e., all horizontal or all vertical), it is recommended that you indicate
the specific orientation; this will increase bar code read and scanning
performance.
If your bar codes are predominantly in the same orientation (e.g., horizontal)
but may have an occasional bar code in the opposite direction (e.g., vertical)
it is recommended that you use the appropriate "and" orientation
(e.g., Horizontal and Vertical).
This will improve bar code reading performance for these types of bar
code applications.
When the bar code zone is first created, the software automatically sets
the orientation to the orientation of the bar code, if found. Otherwise,
Horizontal is selected by default.
— select an orientation option from the drop-down list.
Confidence
Use this
option when you want to restrict what the software considers to be a successful
bar code read.— enter a confidence ratio number
to restrict what the software considers a successful bar code read. For
example, the higher the value you enter, the chance of misreading bar
codes will be reduced.
Quality
The highest
quality bar codes are printed by a laser printer or pre-printed with an
offset printer. Lower quality bar codes are printed with inkjet or dot-matrix
technology.
Depending on the quality of bar codes being scanned, set the Quality
level accordingly. The higher the quality setting, the faster the bar
code read performance.— select a quality setting
between Worst and Best.
Position —
select Anywhere
When creating
a zone for an Anywhere bar code,
draw a location around one bar code somewhere on the page, and select
the Anywhere option. This situation
often occurs when bar codes on documents.
When looking for Anywhere bar codes, the software searches the image from
top to bottom for horizontal and vertical bar codes. This search order
is important to understand if you have more than one Anywhere bar code
on a page or zone. orZone
The Zone option increases bar code reading
and scanning performance and is the default setting.
Alternatively
search on the reverse side — enabling this option increases document/batch
separation and indexing accuracy when pages are accidentally reversed
before scanning.
Alternatively
search on 180° rotated images
When bar
code reading is unsuccessful, the software will also look for the zone
after rotating an image 180 degrees. This slows down bar code reading,
but prevents a bar code read failure because a page was scanned upside
down. The image is not permanently rotated unless the Rotate
based on bar code option is selected.:
can only be used when the Zone
option is enabled.
Rotate based on bar code
For document
rotation, all of the pages of the document will be rotated in the same
manner as the lead page containing the bar code zone. If required, only
one bar code zone should have the Rotate
based on bar code option enabled.
The software can determine if a bar code is rotated 180 degrees and will
rotate the bar code page 180° to display it in the correct orientation.
Batch rotation is not supported in the software.:
rotates the document in the same orientation as the bar code.
Read all bar codes:
when this option is checked and the Position
is Anywhere, all bar codes on
the page will be read. The bar code values will be separated by the ^
character. The order of the values will be the order that the bar codes
were found when searching from left to right and top to bottom on the
page.
Separation
Create a new batch - all images
after the separation go into a new document in a new batch.
Create a new document - all images after separation go into a new
document in the current batch.
Next page stays in current document - the next page after the separation
remains in the current document.
Only separate when change in value
No separation — enable a check box
for one of five options.
If you checked the No
separation option under Separation,
indicate the level for the bar code zones. Bar codes can be found on one
of the following levels:
-
Batch level
Batch level bar codes are only read
when they are present on a Batch Header page.
A Batch Header page exists whenever batch separation is defined using
patch codes or bar codes (at least one bar code zone in the application
is configured for batch separation).: bar codes
that are located on the Batch
level or that separate batches are available for Batch and Document
indexing.
-
Document
level: bar codes that are located on the Document
level or that separate documents are available for Document indexing.
They are not available for Batch indexing.
OK —
closes the dialog box and returns to the Bar Code window.
See also:
Bar code separation setting
About bar code zones