NB-IoT Body SAR Test

[Prasad Tatar]

Hi Team,

We are designing the Nb-IoT Pet Tracker with nRF9160 SOC and We are performing the NB-IoT Body SAR Compliance Testing, For that, we are trying to communicate with the Anritsu MT8821C simulator.  Kindly help here by providing the Setup requirements as well test procedure document for the same.

[Kaja]

Hi, 

we don't have this.. 

We do have this white paper for DTM testing on the 52 series, but on page 5 you can see how to do this with Anritsu:


I would assume that the set up is quite similar.

Best regards,
Kaja

[Prasad Tatar]

Hi Kaja,

Concerns and Issues:-

We are doing Our Product Certification for NB-IoT as well as Bluetooth.

For Bluetooth, we are using nRF52840 SOC and for NB-IoT, We are using the nRf9160 SOC.

For the Body SAR Testing, the device Should Be in the Continuous transmission mode@ max Power will be Radiated, which we can easily do with UART but In the Case of Body SAR, the Device must be in the mechanical enclosure as like final product, So, in that case, we can not draw the UART wire from the product.

So now we have the only option to ready one firmware that contains continuous Transmission Mode setting @max power.

So after flashing the firmware, the device will go into the continuous Transmission mode it means it will transmit the continuous power after turning on the device.

The required specification for firmware for NB-IoT as well as Bluetooth are mentioned below,

NB-IoT Specification for Firmware:-

• NB-IoT Band 3(Ex. Channel 1740MHz)
• Max Tx Power:- 23dBm
• Modulation Scheme:-FDD
• Modulation Techniques:- BPSK

Bluetooth Specification for Firmware:-

• Bluetooth 5.0
• PHY Setting;- LE Coded S=8  
  
• Speed:-125Kbps
• Advertising Channels:- Ch37, Ch38 and Ch 39
• Max Transmission Power:- 8dBm

Please let us know of any queries.

Suggestion:- Maybe this Firmware Already available because the nrf9160 module already Telec Certified. 

[Kaja]

Hi, 

if you can't access the UART or SWD interface, you have to go with the solution you have or make a FW that cycles through the AT commands you want to use for this certification.

Here is the AT commands for production test featurs 

Best regards,
Kaja