DFF1- UHD INTERFERENCE

[Albiedamned]

This interference ocasionally shows itself when the engines are running, not all of the time.
Transducer B275LHW.
Wiring is correct, Where do I start?

 

[kicker]

Are your grounds connected on the TZT2 and DFF1-UHD? Make sure your transducer cables aren't routed onto something that might pass noise onto the cable.

What kind of engines do you have?

Is another sounder transmitting?

How deep of water are you in with the picture you posted?

Also, make sure the orange wire off of the transducer is not connected into the DFF1-UHD.

 

[Albiedamned]

Engines = CAT C7
No other sounder is transmiting.
Depth = Around 2500'.
The orange wire is connected.

 

[Johnny Electron]

Not sure it it will fix this problem but I also recommend the ORG wire from the transducer not be used with the DFF1-UHD. Then pick the transducer model number in the transducer setup.

 

[Albiedamned]

I will try disconnecting the orange wire.

 

[Snips]

Albiedamned,
What the UHD is picking up is most likely noise from your alternator. There are capacitors that we can recommend to help suppress this noise. However before you add one of these try changing where the shield wires are going on the LF/HF pairs. Currently the shield wires are terminated on the orange WAGO connector pins 3 & 6. Try terminating them on the metal cable clamp to see if that helps.

Snips

 

[Albiedamned]

:furuno OK, thanks for all of the suggestions by the Mods.

 

[Albiedamned]

Disconnecting the orange cable did not eliminate the interference, I will try connecting the LF/HF pairs to the metal cable clamp next.