Heave compensation not working as well as expected.

[allrelative]

I have the SCX-20, Navpilot 300 and TZT3 with B175 HW. All is to be working as expected with no issues, great setup. Heave compensation is enabled and helps, but honestly does not work half as well as I thought it would. Are others seeing the zoomed in bottom image truly flatten out?
Tested again this weekend in 40,60 and 90 feet of water.

 

[FishTech]

Did you input the ship and antenna position values for the SCX20? If not, that should make quite a difference.

 

[allrelative]

Yes, I did. I did not use a tape measure but will measure out update the values this week and report back.

 

[Johnny Electron]

I recommend using this document as I find it a bit easier.

https://www.furunousa.com/-/media/sites/furuno/document_library/technical_info/miscellaneous_documents/public_tech_info/dff3d_offset_measurement_examples.pdf

 

[allrelative]

Thank you !! That is much better.

The SCX install and antenna location measurements were spot on, however I think I see where I messed up. Under Transducer setup, motion sensor, I have the location of the SCX antenna measurements in there, not the transducer. Which should it be?

This would be a quick diagram of where the transducer and SCX are located in relation to each other.

 

[allrelative]

I am using the 175HW ducer which does not have a motion sensor (that I know of) so this should be the SCX 20 antenna??
here is an example of the sea floor.

 

[TheReaper]

The measurements in the transducer setup menu are the location of the transducer in relation to the SCX20. Based on your diagram, the bow/stern number would be a negative value since it's behind the SCX20. The other 2 will be a positive value. Here's the information regarding those settings:

 

[allrelative]

Thank you for the help that fixed it and looks much better!

 

[allrelative]

here is a before and after with Tuna grabbing my bait in the 2nd.