What DTM software?

[squadOne]

Hello,

I need more precisions about the software described in one of your files.

In the nAN_34.pdf Section 3.2.2 "Computer Software" (https://infocenter.nordicsemi.com/pdf/nan_34.pdf), refer to an "Upper tester software" written in Python, etc;..

What is that software and where can I find it, please?

Thank you!

[Andreas]

Hi,

 

You can find that here: https://infocenter.nordicsemi.com/topic/struct_appnotes/struct/appnotes_nan34.html

 

Best regards,

Andreas

[squadOne]

Andreas,

Thank you for the link. I have a few other questions about that document.

1) I imagine that it is an old document, but I wanted to know if concepts shown are suitable for recent Nordic dev kits (like nRF52)?

2) My second question is about hardware setup: Can you tell me if an attenuator is mandatory when we use DTM between two Nordic SoCs (DUT: nRF52810 and Lower tester: nRF52832) knowing that the feed line is already impedance matched (50Ohms)?

[Andreas]

Hi,

 

1) Yes. The document and code is a bit dated as you say, but the concept can still be used with nRF52 dev kits (nRF53 for that reason once we get sufficient code support).

2) An attenuator might be needed, the nRF52 receiver starts saturating and get bit loss at 0dBm input and higher: https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52832.ps.v1.1/radio.html?cp=4_2_0_22_14_4#unique_919665808  But your mileage may vary. You could transmit at lower TX power and just tune your test to estimate performance at >0dBm if testing at e.g. -8dBm, but the secure solution would be to just throw an attenuator in there.

 

Best regards,

Andreas