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Capturing Debug Data

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From time to time, your friendly Impinj support personnel may require more information than you are able to provide us in order to resolve whatever issue may be occurring. When this happens, we will ask you to make an RDD file and an FDD file, which are our Reader Debug Data files. The process below will walk you through two ways of obtaining these files.
Items required to perform these functions are:

  • A network connected Impinj Speedway reader
  • A network connected PC running ItemTest for Speedway

IMPORTANT NOTE:  The process of collecting these files results in a lot of data.  Both files will become quite large very quickly.  To minimize the file size, please only turn on the reader ("Start Inventory") for 10-15 seconds. We would also recommend keeping the capture window small, as to keep the file size reasonable.


Method 1 – ItemTest controlling reader 

Step 1a.
Start ItemTest and connect to the reader whose debug data you wish to capture. Once connected, click the ‘Reader Settings’ tab and click ‘Configure’ next to the reader you would like to collect data from.

 


Step 1b.

In the new window that opens, select the ‘Utilities’ tab, and you should see a section labeled for ‘RDD Capture’. This section will have two fields, ‘RDD file name’ and ‘Capture Window’. The capture window will determine the amount of the data that the RDD and FDD files will contain, the default is set to one minute’s worth of data.

 

Step 1c.
Click the “Start RDD” button and the reader will begin to capture data. Once it has been started, you will need to start an inventory run using ItemTest by clicking the "Start" button on the main ItemTest window. You can see the RDD capture is active via a status message in the bottom right corner. You would then stop the inventory run after 10 seconds, or until you see the issue occur.

 


 

 
Step 2:
You will now want to stop collecting the data. To do this, you can either click the ‘Stop RDD’ button in the Utilities tab of the Reader Configuration (where you started the RDD capture), or by clicking the ‘Stop all RDD’ button on the main ItemTest window (this will only appear when RDD capture is running).



Method 2 – Other application controlling reader 

Step 1a.
Start ItemTest and connect to the reader whose debug data you wish to capture. Once connected, click the ‘Reader Settings’ tab and click ‘Configure’ next to the reader you would like to collect data from.

 


Step 1b.

Click on the ‘Utilities’ tab, and you will see a section for ‘RDD Capture’

 


Step 2:

Click ‘Start RDD’ to start the capture.


Step 3:
You will then want to start your application, outside of ItemTest. For example, you could run one of the SDK examples or your own application such as the one shown below:


Step 4:

After collecting debug data for 10 seconds, or up to seeing the issue occur, you will want to stop the RDD capture by clicking either the “Stop all RDD” button on the main ItemTest window, or from the ‘Stop RDD’ button in the same window as where you started the capture.

 

 

Once either of the two methods described here has been performed, send the .rdd and .fdd file to your Impinj support professional for analysis. The .rdd and .fdd files will be saved under the 'rdd' folder of the ItemTest program directory.

 


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Impinj (NASDAQ: PI) wirelessly connects billions of everyday items such as apparel, medical supplies, and automobile parts to consumer and business applications such as inventory management, patient safety, and asset tracking. The Impinj platform uses RAIN RFID, delivering information about items to the digital world and enabling the Internet of Things.