Down imaging

[CaptSpike]

after playing with my unit this morning I’ve come to the conclusion I won’t get down imaging like I had on my Humminbird. I’ll just have the typical 2d sounder. I’m not sure if I had the dff3d transducer if I would get a similar screen like a humminbird sounder or not. I’m thinking the term downimaging means two different things to each manufacturer.
I have a B175 that is spec’d to be used on the sonar and the 455t-903 that is spec’d to be used for the side scan. Am I missing something? Should I add the ddff transducer?
When I asked the salesman about the dff3d he said it was built into my unit. So my guess is I might need another transducer to utilize it.
In all honesty I didn’t use downimaging much on my HB anyway.

 

[FishTech]

I agree with you, each manufacturer defines things differently.

The built in fish finder in the 10', 13", and 16" TZTXL units will give you the "typical" 2d downward image.
Additionally, the built in fish finder can also give you side scan (~30° down from the surface), depending on how you have things setup.
You are properly equipped to use both.

Regarding the other brands, the only "downimaging"-like option we have would be the DFF3D's version of "side scan". However, you cannot have side scan as the 455T-903 provides AND the DFF3D side scan. Once the 455T-903 is added, it replaces the DFF3D side scan. Before we had a true side scan, we had this feature in the DFF3D but it is looking down through a 120° beam, 60° to port and 60° to starboard.

The DFF3D is it's own black box unit and not built in to any of our MFDs. They may have been thinking about the PBG (Personal Bathymetrics Generator). When you have a DFF3D and a proper transducer for it, the MFD can create and store the PBG data.

https://furunousa.com/en/products/dff3d