Depth Offset (for adjusting xducer immersion depth in the water) is under the Setup tab ...
Depth Offset should always be adjusted before adjusting Water Level Offset ...because Depth Offset is "offsetting" the actual digital depth readout to account for the water above the xducer ...
And then the digital depth readout is used as the "target" for adjusting the Water Level Offset (for the LakeMaster spot sounding to match the digital depth readout) ...
Depth Offset need only be adjusted 1 time (or after Restore Defaults) ...
Water Level Offset should be adjusted every time water level in the Lake fluctuates ...
Rickie