WAP G2 not scanning code 39 30 digit barcode

Hi Larry,

This is Burt from Psion Teklogix  HELP DESK. Is this a Decoded scanner?

Code 39 barcode setting have a parameters “SET LENGTH”  in that parameters set it to any length that should read your 30 digit characters.  Larry, this parameter is found in control panel, in Teklogix Scanner, code 39 set length.

Regards,

Burt

Hi Larry

I work in the Product Support Group,  and often see scanner issues come across my desk.  Are they using different scanners in the two devices?  IIRC there was some limitation in the SE1223 when scanning code 39.  Is 30 characters  a common data length for code 39 in your experience?  

Regards

Nick

Hi Burt

The scanner is an internal decoded scanner

Ya I saw the code39 length settings but still having the same issue

Tested on barcodes up to 27 characters which scan ok but 28 characters or higher will not scan, tried with 7535G2 and it scans barcodes perfect which means I can't be looking at a code39 length restriction.

Hi Larry

I would guess the 7527 and 7535 have different scan engines inside.

You can look in Control Panel under the System Properties tab to find information on installed hardware including the scan engine.  If it is an SE1223 that's not behaving correctly you need to contact the Help Desk to see what can be done.  

Hello Larry,

This is Arthur with the Psion Teklogix helpdesk.  Here are some things to consider when creating a barcode for your application:

What is the 'mil spec' of the barcode that you are creating?

The 'mil spec' describes the width of the thinnest bar of a barcode, measured in thousandths of an inch.  The specifications of your scanner will identify the smallest barcode that you can scan.

As the amount of data in your barcode grows, the width of the barcode will grow also.  The user may have to move the scanner away from the barcode in order to fit the full barcode within the field of view (width of the beam).  Barcode scanners have a focal distance in which the scanner best operates; this is the value that determines the difference between a standard range scanner and a long range scanner.  If the scanner is being held too far away from the barcode, it may be outside of the focal distance in which the scanner best operates.

Is the data all numeric or are there alphanumeric characters included?

As the length the barcode increases, you may want to investigate barcode symbols that allow for more complex encoding of characters.  Code 128 is a commonly supported barcode type that can compress fully-numeric barcodes extremely well and is also capable of handling alpha characters.  

There are many other symbol types that you can look at with differing levels of complexity.  If you are interested in encoding very large amounts of data, 2D barcodes may be a good solution (although an imager is required to scan).

Yes Nick both are different scan engines, 7527 is a symbol 1223 HP and the 7535 is symbol 1200HP, but as code 39 is standardized, there shouldn't be an issue,

Hi Arthur

I have been testing with different barcode lengths, all numeric:

For 26 character and 30 character barcodes the following dimensions are set - x dimensions = 0.53  mm and density = 0.128  chars/mm, height is 12.7mm and ratio on the bartetender program I am using is set to auto.

Tested fine on 26 character barcode but for the 30 character barcode the 7525 failed to scan while the 7535 scanned with not issue.

Also changed the code 39 barcodes to code 128 and had no scanning issues.

Can I take it that there is a flaw with scanning code 39 barcodes over 26 characters  on the 7525?

If not is there any workaround/config changes I may need?

Is there some one in Psion I can send the barcode to, for testing?

Regards

Larry

Hi Larry

May I ask that you contact the Help Desk to resolve this?

Thanks

Nick

Hi Nick

Have done and awaiting a reply, service ticket reference 149052

regards

Larry

Hello Larry,

I'm not a frequent user of the barcoding applicaiton that you referenced so I'm not certain how the char / mm relates to the mil spec that we typically work with.  If the information at this external site is correct, 0.128 char/mm should be approximately 5mil (very small).

http://www.barcodetools.com/faq/faq/linear-barcodes-faq.html

I've tested various standard range 7525 scanners with 30 character (5 mil) barcodes and haven't run across any problems.  Depending on the type of scanner installed in your terminal it may be that this barcode is too small for the scanner to read, or the width of the beam does not meet the requirements when held at the appropriate distance.

The scanner specifications can be found in the terminal user manual.  The type of scanner that is installed is reported in the System Properties (Control Panel -> System icon -> Properties tab).

Your local helpdesk can open a ticket for you to help verify the specifications of your scanner and evaluate the barcode.  If you are sending any barcode for evaluation by electronic means please use a format that is not subject to stretch or skew when printed.  A PDF document is ideal.

Hi Larry, this is Michel from the European Help Desk. This is a problem we have sporadically seen in the past with the SE1223 scanners. I am working on your ticket 149052 for this issue with the repair depot and our UK office. I'll be back with more news soon.

Hi Michael. Is there any solution till now for this problem.

I´ve seen the exact same behaviour on my Workabout Pro G2.

Hi René,

Thank you for posting. What type of scanner is mounted into your WAP G2? We are still working on this and I would like to open a help desk ticket for your WAP G2 as well. Please e-mail us or call us on the e-mail address or telephone number for your country.

Hi Michel,

please ask Radya to have a look into the Jira.

If I remember right the SE1223 has a problem to read Code 39 with a length of more than 26 characters at all.

There is no solution planned from the manufactuerer of the SE1223.

Kind regards

Hans-Jürgen

Hans-Jürgen -  we are digging in to this, but I don't think that yours is a an answer that will satisfy a partner.  We will have to find some acceptable solution one way or another.   Is there an alternative scanner that would fit the application?  How much control does the customer have over the barcodes? It cannot be very common to have such long code 39 labels, or we would have had an absolute flood of reports, which is not the case.

Nick