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Selecting Specific Channels Using ETSI Regulations


When developing or testing applications for deployment in ETSI regions, it is encouraged to select the specific channels to transmit on rather than using the reader default.

NOTE: This only applies to readers conforming to the ETSI regulations. It is not permitted within the FCC regulations to select specific channels.  Therefore, this post is not relevant to FCC readers.


Testing with MultiReader

When using MultiReader, you can select specific channels using the channel selector. See the below screenshots :

1. Select "Use From Specified List" in the "Freq Auto Set" dropdown menu.


2. Select desired channels



When testing with MultiReader, it’s always best to use the method described above (“Use From Specified List” and select the desired channels). Even if there is only one reader in the system design or vicinity of the system, “Use From Specified List” should be chosen and all channels should be selected rather than allowing the reader to select the channels. If “Reader Selects Frequency” is chosen, the reader will use its default settings which is to use only one channel. This can cause throughput and interference issues; see UHF RFID in ETSI region.


Developing applications

When developing applications, transmit channels can also be selected using the Octane SDK. Using the simple lines of code below, you can select the necessary transmit channels:

                    // Specify the transmit frequencies to use.
                    // Make sure your reader supports frequency hopping and
                    // ensure the frequencies are valid for your region.
                    // The following example is for ETSI (Europe) 
                    // readers.
                    List freqList = new List();
freqList.Add(866.3); freqList.Add(866.9); freqList.Add(867.5); settings.TxFrequenciesInMhz = freqList;

This example can be found as part of the Octane SDK (example is called "SetTxFrequencies") and should be used along with these “best practice” tips when developing applications for the ETSI region.

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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.