HELP! TZ2's terrible picture - DFF1-UHD or Transducers

[garycwbf]

We run dual TZ2t's on network with two transducers wired to Dff-1.
B175C20-HW 150kHz to 250kHz 20 degree 1KW and a
B175C-20-L 40 kHZ to 60kHz, 20 Degree ,1KW,

Picture is good when we first turn unit on and we are in Shallow water. Once we start running offshore in deeper water the picture is terrible. Seems to be on a problem on both frequencies, the high or low transducer. Is this a problem with the DFF1-UHD not supplying power or something else? Can i send the DFF-1UHD in to furuno to be checked? Here is picture of the simrad we also run for backup on different frequencies and pic is excellent
Very disappointed and about to pull all this furuno out....

fyi- Nothing has changed in either system other past 4 years other than the display quality oif the Furuno??












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[CraigNZL]

is this while at speed > also is the UHD New my understanding is the UHD is for chirp transducers mostly but i had this but on my Simrad Nssevo3 running the 5100 module and it was my transducer angle was wrong so it wasn't seeing the bottom . i adjusted the angle and then was fine . id have a look on youtube at Dff1 setups and settings , it could be something simple

 

[Johnny Electron]

When the signal cuts thru like that it is water turbulence/transducer placement. Slow or float the boat and see what happens.

 

[garycwbf]

When the signal cuts thru like that it is water turbulence/transducer placement. Slow or float the boat and see what happens.

transducers have never been relocated in 8 years. Does it at a stop or moving after being on for a few hours. When you first turn units on pic and bottom are perfect at any speed running or at stop.

 

[garycwbf]

is this while at speed > also is the UHD New my understanding is the UHD is for chirp transducers mostly but i had this but on my Simrad Nssevo3 running the 5100 module and it was my transducer angle was wrong so it wasn't seeing the bottom . i adjusted the angle and then was fine . id have a look on youtube at Dff1 setups and settings , it could be something simple

The transducers have been installed for 8 years with perfect performance sitting or running up to 45 mph. The picture goes crappy after units have been running for several hours, so don't believe its placement of transducers.

 

[Johnny Electron]

Based on that sounds like something getting hot. I would recommend sending in the sounder for evaluation with a good description that it take several hours running to appear.