Bad imaging with B275 transducer and tz3

[PaDDY Killer]

Hello all, the settings that were done to my fish finder by the installer have disappeared somehow. The installed last year dialed in the fish finder, it was showing arches when over a school of bait fish or any fish. Yesterday I spent two hours trying to make adjustments to it and had no luck. I did a factory reset at the end and still don't see arches. More like blobs. The installer had brought his phone out when we went out and had like a cheat sheet he was plugging in numbers and adjusting settings. He had dialed it in in just a few minutes it seemed. I tried to contact him but he is unavailable.

 

[Johnny Electron]

Why run LF in such shallow waters? In that shallow of water it should be looking at HF.

 

[PaDDY Killer]

I tried messing with both frequencies and did not have any luck or notice a change. To be honest I don't know when I should be running HF vs LF.

 

[Deep Blue]

PaDDY Killer,

Here are a few settings that might help:

• Bring your boat to a depth that you most commonly fish (preferably more than just 20 ft.) Do not attempt this in shallow water, as the cone of the transducer is so small that fish finder is only good for just showing a general depth and not fish detection.
• Turn OFF the fish finder's Auto-Gain Mode, and the Auto-Range feature.
• Manually adjust the Range to more that twice your fishing depth. If you are fishing at 40ft, set the Range to 80-100 ft. I often recommend setting the fish finder's Range to three times the fishing depth, and still getting the same results.
• Adjust the GAIN until you just see a second bottom echo. This second echo is because the echo is hitting a seabed, and then is reflected back up to the surface of the water, then bouncing back down to the seabed again, until it's picked up by the fish finder's transducer. This ensures that the fish finder's full signal is being picked by the by the fish finder's transducer.
• Then I re-adjust the Range to the desired depth, or you can turn your Auto-Range feature. I recommend leaving your fish finder's Auto-Gain OFF. I always like to find tune my GAIN once I'm on the fish grounds.
• I also always use the fish finder in Dual Frequency Mode.

- Deep Blue

 

[PaDDY Killer]

PaDDY Killer,

Here are a few settings that might help:

• Bring your boat to a depth that commonly fish (preferably more than 20 ft.) Do not attempt this in shallow water, as the cone of the transducer is so small that fish finder is only good for just showing depth and not fish detected.
• Turn off the fish finder's Auto-Gain Mode, and the Auto-Range feature.
• Manually adjust the Range to more that twice your fishing depth. If you are fishing at 40ft, set the Range to 80-100 ft. I recommend setting the fish finder's Range to three times the depth, and getting the same results.
• Adjust the GAIN until you just see a second bottom echo. This second echo is because the echo is hitting a seabed, and then is reflected back up to the surface of the water, then bouncing back down to the seabed again, until it's picked up by the fish finder's transducer. This ensures that the fish finder's full signal is being picked by the by the fish finder's transducer.
• Then readjust the range to the desired depth, or turn your Auto-Range feature. I recommend leaving your fish finder's Auto-Gain off.
• Always the fish finder in Dual Frequency Mode.

- Deep Blue

Thanks Deep Blue. I will give that a try. Here is a shot of where I left off.

 

[Deep Blue]

PaDDy Killer,

Try turning the Inference Rejection from AUTO to Low, and then set the Picture Advance to 1/1. And turn OFF that Auto-Range (for now...)

- Deep Blue

 

[PaDDY Killer]

Thanks Deep Blue, I will give it a shot!

 

[Jsubzero]

why does the screen shot say 0 khz

 

[PaDDY Killer]

I don't know. I messed with the settings for hours, even doing a factory reset at the end to no luck. I had such a nice screen with fish arches just leaving the harbor before. I don't know why it lost its settings. I didn't replace batteries or let them go dead.

 

[Sparky Wire]

Looks like no one configured the transducer after the factory reset.

 

[PaDDY Killer]

Looks like no one configured the transducer after the factory reset.

What does that mean? How can I do it?

 

[Sparky Wire]

Following the installation manual instructions starting on para 3.5

https://www.furunousa.com/-/media/sites/furuno/document_library/documents/manuals/public_manuals/tzt16f_installation_manual.pdf

Specifically the area of transducer setup. If that gets cleared you would want to ensure that the transducer model type is selected so it knows the freq and power that it should be operating at.