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Different writing distance between RI-TRP-DR2B and ...-DR2B-30

Dear all,

I would like to know if there are differences in writing distance respectively writing performance between above mentioned glass transponders.

We installed a setup using the first glass transponder and had this system running for about six years without any error. Now we are facing writing errors and found out that only the transponders of type ...-DR2B-30 are causing troubles. Do you have any explanation for this? There haven't been any changes of the setup.

Best regards,
Jan

  • Jan -
    what sort of difference are you seeing? These devices should be the same performance.
  • Josh,
    thanks for your reply.

    Every now and then we have writing errors. These errors only occur at tags of type ...-DR2B-30, but never on the previous transponder type.
    The affected transponders seem to be alright, because another writing process at another time is successful. Did the writing distance decrease between the both mentioned models?

    Regards,
    Jan
  • Jan -

    this sounds like its possible (intermittent)  noise which has been introduced into the environment.  Can you check this document guidance and see if that is the case?

    if you are not using one of our RFM + CTL combos for your reader system - OregonRFID makes a gadget which will do same what is described in that document and then you can use the detection log from your reader to help figure out what root cause might be.

    another gadget that you can build from RFM and a bar graph driver is attached here - if you turn your reader system off, you can sweep an area and see if there are ambient noise sources that were previously not known about. This technique i came up mobile hardware for is described on page 45 of the RI-RFM-007B user manual

    www.ti.com/.../scbu022.pdf

    0647.Sniffer Schematic.pdf

  • Josh,

    thank you for your quick reply.

    From the current state I would exclude noise for beeing the root cause, because both transponder types are applied in the system. If noise was the cause, it should affect both transponder types, but it's only ...-DR2B-30 transponders where writing errors occur.

    Nonetheless, I will browse your suggested documents for another approach to find the reason.

    Regards,
    Jan
  • ok - at same time in parallel i will ask the design guys