Im working with:
-Windows Nordic Connect for Desktop App v5.20.
-Direct Test Mode v2.5.0
-nRF54L15 flashed with ncs v2.9.0 direct_test_mode example
There is currently an issue with the Transmit power slider in the App. Apparently, wrong values are sent. The issue got discovered when we measured different TX values as set in the App. Testing and debugging has shown following: results:
| nRF Windows. Tx Power Slider Setting | Register TXPOWER |
| 8 | 4 |
| 7 | 3 |
| 6 | 2 |
| 5 | 0 |
| 4 | -4 |
| 3 | -8 |
| 2 | -12 |
| 0 | -16 |
| -4 | -22 |
| -8 | -40 |
What is striking is that the TX Power Slider has different values before the nRF54L15 DK gets connected. Take a look at the values before the DK gets connected and compare them to our measured values earlier:
| nRF App Settings | nRF Reg TXPOWER |
| 8 | - |
| 7 | - |
| 6 | - |
| 5 | - |
| 4 | 4 |
| 3 | 3 |
| 2 | 2 |
| 0 | 0 |
| -4 | -4 |
| -8 | -8 |
| -12 | -12 |
| -16 | -16 |
| -20 | -22 |
| -40 | -40 |
For me, it seems like the issue lies in changing the App Tx Power Slider values when connnecting the nrF54L DK.