Hi everyone, We are preparing for Japan MIC testing of our product and need to implement a special test program that meets the following requirements: The program must be capable of continuous transmission (>98% duty cycle) . It must allow access to and configuration of: All frequency channels Different modulation schemes (BLE 1M, 2M, Coded PHY, etc.) Output power levels Japan MIC testing will accept conducted sample data only , and a single conducted sample is sufficient . We plan to send the conducted sample in about two weeks . Additionally, we have a new product operating at 920 MHz (Japan band) that will also require MIC testing in the near future. Does anyone have experience or sample code for implementing such a high-duty-cycle transmission test program using the nRF Connect SDK or Nordic tools (nRF Command Line Tools)? Are there any recommended approaches or limitations we should be aware of when creating firmware for continuous TX at >98% duty cycle? Your help or pointers to example projects would be greatly appreciated. Thanks in advance!

How to implement >98% Duty Cycle TX Program for Japan MIC Conducted Testing on nRF52810

Hi everyone,

We are preparing for Japan MIC testing of our product and need to implement a special test program that meets the following requirements:

The program must be capable of continuous transmission (>98% duty cycle).
It must allow access to and configuration of:
- All frequency channels
- Different modulation schemes (BLE 1M, 2M, Coded PHY, etc.)
- Output power levels
Japan MIC testing will accept conducted sample data only, and a single conducted sample is sufficient.
We plan to send the conducted sample in about two weeks.

Additionally, we have a new product operating at 920 MHz (Japan band) that will also require MIC testing in the near future.

Does anyone have experience or sample code for implementing such a high-duty-cycle transmission test program using the nRF Connect SDK or Nordic tools (nRF Command Line Tools)?
Are there any recommended approaches or limitations we should be aware of when creating firmware for continuous TX at >98% duty cycle?

Your help or pointers to example projects would be greatly appreciated.

Thanks in advance!

0 JONATHAN LL 8 months ago

Hi,

You can use the radio test sample or the Direct Test Mode sample:
https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/peripheral/radio_test/README.html
https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/samples/bluetooth/direct_test_mode/README.html

It is also possible to use our crude test setup with some extra steps: https://github.com/bheiskel/rf_test

Regards,
Jonathan
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