Update frequency of the signal quality

[NelsonGoncalves]

Hello,

In our product, the nRF9160 is configured to use LTE CAT-M1 and we are measuring the signal quality thorugh the AT+CESQ command.

After begin registered on the network, we query the signal status. But always get "Not known" for all fields:

AT+CESQ
+CESQ: 99,99,255,255,255,255

This is the output of the AT command AT+CEREG:

AT+CEREG?
+CEREG: 0,5,"42CC","01032208",7
OK

I find it strange that the modem is registered, but there are no signal quality measurements. We check the signal quality once every 10 seconds for about 3 minutes. And the AT command always returns the same response. Are they available only after a certain period, e.g. 10 minutes are power up ? 

[Øyvind]

Hello, 

What SIM card are you using in your device? And can you please provide a location? What application are you running on your device? Is this s custom board or a development kit?

What version of the modem FW are you currently running? Please issue the AT%SHORTSWVER command. 

From the LTE Link Monitor, can you please provide a full output when calling "AT+CFUN?". 

Thank you.

Kind regards,
Øyvind

[kobyatom]

what has worked for you, NelsonGoncalves, is the unsolicited response activated by 

AT%CESQ=1

it responds with 

%CESQ: 46,2,17,2

It seems that the solicited response doesn't output the same information as the unsolicited one.

It seems like a bug to me (I have worked with Telit modems, and did not see this happen there).

[kobyatom]

sorry, my bad. the documentation for the AT+CESQ defines the response, and the modem's response matches the documentation.