Fried Transducer

[Coop]

After much deliberation and trials I decided to remove the TM260 and the BBDS1 and send both to Furuno for testing.
Turns out the transducer is cooked.
The question is do I replace with another TM260 or is the new TM275LHW compatible with NavNet 3D MFD8 and BBDS1?
I need a 1kw trans because i fish 600m deep.

 

[Magnetron]

If you're planning on picking up a DFF1-UHD or CHIRP capable echo sounder sometime in the future, the TM275LHW would be fun. Otherwise I'd stick with the TM260s, IMHO. Maybe some of the acoustic specialists on this forum may have other insights however. :ugeek:

Hope this helps,

- Maggy :sail

 

[Coop]

Thanks, I think I’ll stick with the TM260.
I have another question.
When everything is connected up there is no power getting to the BBDS1 or the transducer!
How is power transferred to the BBDS1?
I assume when the mfd’s are turned on power would be supplied via the Ethernet cable from MFD.

 

[Magnetron]

When everything is connected up there is no power getting to the BBDS1 or the transducer!
How is power transferred to the BBDS1?

One of the things that need to be connected to the BBDS1 is 12-24 VDC power. The BBDS1 needs to be separately powered by the batteries or 12-24 VDC boat power to work and subsequently that's what supplies the energies to make an echo from your transducer.

ref.: (review pg. vi, 14, 19): https://furunousa.com/-/media/sites/fur ... nual_e.pdf

Hope this explains it better,

- Maggy :sail

 

[Coop]

Yes, all the power cables are connected but there must be a signal sent from the mfd to the bbds to turn on when the mfd powers up.
At present I have a independent switch wired in the system to turn the bbds on because the mfd is not turning it on.
This is how I fried the transducer because the switch was left on after turning mfd off accidentally.
Is there a setting I need to turn on somewhere?

 

[Magnetron]

When it comes to signaling:
For a NavNet 3D system with a HUB101, certain dip switches were recommended on for devices such as the BBDS1 and DRS4D radar. If that's your system check to make sure the "power sync" dip switches are set appropriately.

Conversely, all dip switches on the hub101 should be off for the TZ Touch MFD units. If this is an upgrade from a NN3D, check that this step was performed.

Also depending on the MFD you're using, make sure to verify you have the correct MODE SW setting.

ref. (Sec 3.1 on P18): https://furunousa.com/-/media/sites/fur ... nual_e.pdf

- Maggy :sail

 

[Coop]

Ok little confusing now.
I have NavNet 3D MFD8’s.
There is no hub101.
All dip switches on the BBDS1 are in the off position.
I have read thru the manuals and there is mention about Transmission Power.
Green light is on in the menu.
Then the next field is greyed out and not defined!
The next field says Transmission Power and is set at 10.

 

[Coop]

Pic of transmission power setting in menu.

 

[Johnny Electron]

Power gets to the sounder (BBDS1) via the power cable and with power sync setup correctly as it sounds, when the NN3D is turned on a signal comes via network to turn the BBDS1 ON. The mode switches all up on the sounder allow it to receive the power sync signal and turn it on. At that point you should be seeing the stby light on the sounder be lit. If it is communicating correctly with the NN3D via the rest of the wires on the network cable, it will be seen by the NN3D in the setup wizard. When correct transducer is setup in the setup wizard and taken to normal mode the sounder will not be "X"ed out on the top right of your screen. If the sounder transmission is ON, like you showed the transducer will now fire signal the connected transducer. If you get near the transducer on the inside of the boat, you should hear a slight ticking as the transducer fires.

 

[Coop]

I have all the dip switches in the up position.
The BBDS will not start up.
The only way I can get it to work is position the No1 dip switch on and supply power to the BBDS1 via a remote switch on the dash.

 

[Magnetron]

According to the book, the BBDS1 is powered on and off according to the NavNet series it is connected too. For example, in the case of a NavNet TZ-Touch, it's powered on and off from the mains switchboard. In your case (a MFD8), it is exclusively "powered on and off" from the display unit (MFD8). :think

The LED on the Bottom Discrimination Sounder lights or flashes according to equipment state, in the case of it being "lit continuously" -> NavNet equipment is not showing the sounder display, or sounder is not connected to NavNet equipment."

So, if the MFD8 turns the BBDS1 on and off, and it's not powering on for you check all ethernet cabling and connectors between the MFD8 and the BBDS1, and replace or bypass damaged or questionable cat5e cables.

Ref. (P.19): https://furunousa.com/-/media/sites/fur ... nual_e.pdf

Hope this helps,

- Maggy :sail