【ChaoSi】nRF9160 Unable to connect to cmw500（Cat-NB）

[sean]

Hi，

    The product burning function code can be connected to a cellular base station。Because we need to test the RF, burn the at client software, weld the RF transmission wire to the ANT pin of nRF9160, and multiple tests cannot connect CMW500 of Cat-NB, our engineers used the nRF9160 DK board to burn the same code（Cat-NB） and connect it all at once. What may be the reason for this problem?

Instructions：1、AT+CFUN=1；2、AT+CIMI  is ok

Modem：mfw_nrf9160_1.3.2.zip

at client：C:\ncs\v2.0.0\nrf\samples\nrf9160\at_client

[Øyvind]

Hello, 

Have you seen our blog post on using nRF9160 with the CMW500? 

What commands are you issuing in the AT Client? The default setting of the SYSTEMMODE is LTE-M. Please retry with NB-IoT. 

Kind regards,
Øyvind

[sean]

Hi，

    Similar to document operations。Our same instrument operation method and at client software will work fine when placed on nRF9160 DK。Which software example is the best recommended for connecting CMW500 for the test。

[Øyvind]

Can you please provide logs from both the failing and functional tests? We need to understand what is going on in the background and see that the same and what  AT commands are sent. 

Thanks