I am setting up my HDS units and I need to tell the unit which sonar to install and I have several choices, I am thinking I need to be in one the of following settings:
PTI-WSBL/PTI-WSU
PT-WSBL/PTT-WSU
PT-WSBL/PT-WSU
I think PT is pressure/temp and I think WSBL is water speed by land? What are the differences in these settings and what is the right one to be using?