Annoying noise with speed alive

[paivapedro]

Hi.
I have a D-100/EMS120/HS34 setup and every time the speed goes alive on takeoff roll and just before complete stop, the system makes an annoying humming noise on the intercom system.
We've checked all ground wires and everything seems to be ok with the installation.
Also, the clock resets every time the unit is powered on.
Any ideas of what might be causing the issues?

Thanks

 

[Dynon]

Do you have an AOA/pitot installed? That sounds like you're hearing the AOA alarm as you're taking off. There a setting to inhibit the alarm, and also, you may need to change the alarm in the AOAALM setting as well.

 

[dynonsupport]

And if you don't have an AoA pitot installed, but have the audio alerts for it turned on, you may be hearing it as well.