Measurement of NRF 52832 broadcast interval

RE: Measurement of NRF 52832 broadcast interval

creator — Wed, 14 Aug 2019 03:03:10 GMT

Thank you very much for your reply.

RE: Measurement of NRF 52832 broadcast interval

Jared — Tue, 13 Aug 2019 07:48:45 GMT

The most precise method to measure the signal would be to use a signal analyzer. If you're only interested in whether the radio is on or off then you could use PPI and GPIOTE to set a pin once the radio is active. See our PA/LNA tutorial on how to implement this.

RE: Measurement of NRF 52832 broadcast interval

creator — Tue, 13 Aug 2019 02:28:29 GMT

Thank you very much for your reply.
Power supply analysis is not very accurate, because the emission current is very small, not easy to see, but also misleading.
Because we use power supply analysis, even the smallest power supply voltage, nrf52832 will broadcast, can not explain the time and interval of nrf52832 broadcasting.
How to measure the transmitting signal of antenna with waveguide is the most direct and effective. Is there any way?

RE: Measurement of NRF 52832 broadcast interval

Jared — Mon, 12 Aug 2019 09:30:03 GMT

Hi,

You could measure the current consumption, generally you would see a significant increase in current consumption that would indicate that the radio is on. You could use the online power profiler to get an idea of the amount of increase in current during TX/RX.

regards

Jared

RE: Measurement of NRF 52832 broadcast interval

creator — Mon, 12 Aug 2019 00:54:50 GMT

Thank you very much for your reply.

Is there any way for nrf52 to measure the interval of antenna broadcast signals with an oscilloscope?
It's no problem to judge whether nrf52 broadcasts for a period of time.
Thank you

RE: Measurement of NRF 52832 broadcast interval

Jared — Fri, 09 Aug 2019 13:01:02 GMT

Hi,

The reason that you're measuring a signal under TX on the nRF51 is that it has a DC component on ANT from VDD_PA. You're probably seeing the DC pulse "leaking" through the matching network, and you can measure the same signal directly on VDD_PA (the signal is always high during TX). The nRF52 on the other hand doesn't have this, which explains why aren't observing the same on the nRF52 DK.

regards

Jared