DSHOT Pixhawk 4 setup not working

Hello,
I am following the documentation on v1.10.0 to setup DSHOT 600 for my current setup. However, the signal traced from M1 on Power management still looks like a PWM to me.

Current setup:
I have the Radio, FMU, PM, RC, and ground station configured and working. I can arm move the throttle and monitor M1 changes on my scope.

DSHOT Setup:

  1. I used v1.10.0 tag and flashed to FMU.
  2. I modified DSHOT_CONFIG 600 3 ways:
  • Using rcS file prior to flashing
  • Using parameter function on ground station
  • Using an airframe mixer pair that predefined DSHOT CONFIG

In all 3 instances I can verify that DSHOT_CONFIG is showing the right value however the scope shows PWM and not DSHOT protocol.

I would appreciate any suggestions that you might have.
Thanks.