High PER at 2Mbps

[Michael]

Hi,

Scenario:

Two nRF52832DK boards on a table, approx 20 cm from each other, +4dBm output power.

Payload length is ~60bytes.

Running at 1Mbps gives me less than 0.1% PER, running at 2Mbps gives about 25% PER. (everything else kept identical)

Is this expected, or is there something at play here?

[Michael]

Nope, no WiFi or anything else... Spectrum is almost empty here... the same difference regardless of what channel I'm using....

And at that distance, if anything would affect the reception to a large extent it would probably be receiver saturation in that case.... But it that case, why such a difference between 1Mbps and 2Mbps...

[Michael]

Ok, so the summary: 250kbps NRF: 0% loss, 1Mbps NRF: 0% loss, 2Mbps NRF: ~20% loss, 1Mbps BLE: 0% loss, 2Mbps BLE: ~20% loss

Will try replacing the boards tomorrow, just to exclude the possibility that there is some power issues.... I also tried lowing the output power, with same result... So lowering the TX power to -16dBm did nothing (still 0% loss at 1Mbps, and still high loss rate at 2Mbps).