DTM UART interface in nRFgo Studio - carrier mode & tx power

[Mike]

I was looking the way to set different tx power values and also figuring out a small bug in the interface when you switch among payload models and payload length is >1. Bug is that "Constant carrier" only works when payload lengt is "1"!!

I succeeded into switching form 0db to 4db (only) by setting "single" Channel, Payload model "Constant carrier" and length "2" and by setting Channel to 0 or 4 (note: it's not possible to select negative values i.e -4db to -40dB in 4db steps). Start and stop the test and then switch back to payload length "1" to enable Constant Carrier outputby a next restart.

I got into this trick as there's something missing in the interface thus I went deeply reading ble_dtm.c code and the dtm_vendor_specific_pkt function where the trick is source explained.

I'm looking for a fix/update of the interface or for any free DTM UART interface available off nRFgo Studio without recoding from scratch.

Thanks

[Asbjørn]

Hi,

I've tested this out and can report that I see somewhat the same behavior. I've talked to our developers for nRFgo Studio and they are opening a task to fix the payload dependency in "constant carrier" mode and also add the functionality of adjusting the output power. I don't have a time frame for when this will be introduced, but hopefully it will be implemented in the next public release of nRFgo studio. Thanks for reporting back to us.

[norbt]

^^ agreed!