Is there any test firmware available (or reference code) for doing total radiated power measurements? I have the nRF9160 designed onto a PCB and we'd like to do some antenna measurements. Ideally I'd be able to put the nRF9160 into a continuous wave mode.
Thanks!
Johnny
I still get the same error following your instructions. He's a picture again, along with the output log from the nRF Connect terminal.
Awesome, you're right. It works now. I want to point out that some of the examples in the AT command reference document provided by Nordic omit the 'X' as well. The picture below is from page 36 of the guide, which talks about the RF test commands. This is probably where I got messed up. The command is described correctly in the manual, but in the example code snippet there is no 'X.' There are a few other examples like this too in the RF test section.
I have one last question (hopefully). When I enter in an AT command for transmit I get a response from the module that is '%RFTEST: some number.' According to the AT manual, dividing 'some number' by 16 is supposed to give me the power at the antenna. When I send TX commands, the reply telling me the TX power is always negative and in the hundreds (see the nRF Connect terminal output below). This seems to imply my power is well below -30 dBm, which can't be correct. Am I interpreting this right, or is something else wrong? I'm using development kits right out of the box with no modifications to them.
I connected the DK directly to my spectrum analyzer so I could measure the conducted power directly. I am actually seeing correlation between the %XRFTEST: some number response and what I am measuring on the spectrum analyzer. I set the output power to 0 dBm and the response was -795. -795/16 = about -49dBm. This is approximately what I see when I measure it. So, my question above now changes slightly: why is the power delivered to the antenna so low when I am requesting 0 dBm? I am plugging directly into the connector that is on the DK.
