Questions About the Radio Test Sample for Measuring BLE Radio Frequencies

[Kentarou]

Hello,

I am working on a prototype Bluetooth Low Energy module using the MDBT50Q-512K (by Raytac).

To measure the frequency of this prototype with test equipment, I am planning to use the following sample:
Radio test (short-range)

I have a few questions regarding this, and I would greatly appreciate your guidance.

Q1. Regarding the 3 modes supported by the radio test sample for testing and certification purposes, is my understanding of the TX modes correct as follows?

1. Constant RX or TX carrier

   • Frequency Hopping: OFF
   • Primary modulation (GFSK): OFF
   • Output: Continuous sine wave

2. Modulated TX carrier

   • Frequency Hopping: OFF
   • Primary modulation (GFSK): ON
   • Output: Modulated signal on a single frequency channel

3. RX or TX sweep

   • Frequency Hopping: ON
   • Primary modulation (GFSK): ON 
   • Output: Continuous output across frequencies 

Q2. Are these three modes also supported on the nRF52833?

Q3. I would like to test these 3 modes on a custom board where the nRF52833 is implemented, rather than using the supported development kits.

To use these modes, is it sufficient to connect the UART pins of the nRF52833 to a control PC and input control commands from the PC?

Are there any additional precautions I should take?

Additional Information

• I am using nRF Connect SDK V2.7.0.

Thank you very much for your time and support. I look forward to your reply.

Best regards,
Kentarou

[Jared]

Hi,

Q1: Yes, you're understanding is correct.

Q2:Yes these modes are supported on the nRF52833.

Q3. That should be sufficient. You only need access to the serial interface to send the correct configuration commands to the nRF52833. 

Are there any additional precautions I should take?

No, none that I could think of, it sounds like you have full control already! 

regards

Jared