how can i read raw depth data with python from my Echo sounder Garmin vivd 7sv?

i have new fish finder Garmin vivd 7sv

it is wifi built-in eabled device

i need to use it to gather depth data for bathymetry works

i want to get raw data read from the device to my pc to use with python models

i only see track/waypoints/routes data exchange : does it contain depth measure too ?

how to get data from physical/hardware port directly

what library or packages can decode raw data from this device in python ?

how to do ?