Adalm-Pluto: IIO smooths signal

Hello everyone, following situation:

I've got an Adalm-Pluto which I just reseted. When i start my programm (which works like a spectrum analyzer + transmitter) I transmit the following signal 

When I start the IIO Oscilloscope now, the Signal immediately changes to the following signal:

When i close the IIO Oscillosope now, the Signal stays like this. I can restart my Program as much as I want, i still get this "smoothen" signal (which i prefer).

My question now is: How can i accomplish this in my code, without having to start IIO Oscilloscope? Is there a way to find out, what IIO Oscilloscope does when its starting?

Since I can use my program in any way I want, without its changing the signal form, I assume that there is a setting which im not aware of yet. 

My programm sets following attributs:

"iio_attr -u ip: -c cf-ad9361-dds-core-lpc altvoltage0 raw 1"

"iio_attr -u ip: -c -q cf-ad9361-dds-core-lpc altvoltage0 frequency 0"

"iio_attr -u ip: -c -q cf-ad9361-dds-core-lpc altvoltage0 scale 1"

"iio_attr -u ip: -c -q cf-ad9361-dds-core-lpc altvoltage0 phase 90000"

"iio_attr -u ip: -q -c ad9361-phy voltage0 gain_control_mode manual"

and also the transmitting Frequency, Bandwidth and Samplig Frequency.

I apreciate any kind of help.

[edited by: Can_BeRg at 7:10 AM (GMT -5) on 3 Mar 2021]