Radio test ETSI certification

[annapalu]

Hi all,

I'm starting with fcc and etsi test! i know that the radio test example is useful to test the radio.But the ETSI add two type test about receive emission spur and receive blocking. The idea is : there is a good signal and bad signal, the test wants to test how good signal is recieved. Someone have any idea to do that?

Thanks, Anna

[AmbystomaLabs]

Please edit and repost your question. Something went wrong and it is largely unreadable.

[annapalu]

Sorry AmbystomaLabs,

i use phone to write and it change the word. My question is about the new certification ETSI 300 328 (www.etsi.org/.../en_300328v020101p.pdf).

5.4.11 (Receiver Blocking).

Do you have some suggestion about made this test?

thanks, Anna

[AmbystomaLabs]

I have not tested a bluetooth device to ETSI standards, however I have tested several WiFi devices with successful acceptance by the countries we targeted.

Blocking on a WiFi device is generally tested by placing master and slave in a link and using software to shove packets through. On WiFi we generally used iperf since this allowed us to easily fill up the channel and measure the effect of the blocking signal. If one sends UDP packets then the phy won't retransmit lost packets and the packet loss can easily be measured.

On bluetooth you could use the same approach, however you will have to come up with a replacement for iperf. Or you could use the bluetooth as an ethernet link.

In order to come up with the relevant ETSI test you need to figure out which equipment category you fall under as defined in 4.2.3.

If you are making a beacon device with no receive function. It is perfectly acceptable to specify this. Also 5.4.1 allows you to specify an alternative blocking test if the prescribed method is not relevant to your product.

Nordic does have DTM software in the sdk. But it only does fixed transmit or receive modes. Though I think in receive you can pass the CRC error count through the UART (another way to indicate packet loss).

Also worthy of note is that different than FCC, ETSI is not a certifying body. It is a harmonized standards body. At the end of the day your final test report needs to pass muster with each country you intend to ship to within the EU.

[Sigurd]

Hi annapalu,

You can use DTM to set up such a test, see the python script in our nAN-34 document. The firmware on the two nRF devices should be the DTM example in the SDK.