Dear support team,
we are currently facing an issue with the production test firmware provided by Dialog when running it on our custom PAN1740 based hardware.
The original DA14580 source code has only been adjusted regarding the UART RX/TX pin assignments.
When we connect with Connection Manager and start any TX test (e.g. unmodulated TX), we can observe a carrier in the spectrum, but at a wrong frequency. The signal looks more or less ok for channel 37. The carrier is located at 2402 MHz. Channel 38 is located at 2404 MHz instead of 2426 MHz. Channel 39 is also located at 2404 MHz, but has a much broader shape.
The prod_test fw is based on SDK5.0.4; Connection Manager is v3.0.10.
Can you give a hint what could be the reason for this behaviour?
btw. The actual application fw works well. E.g. the advertisement channels are perfectly met.