humminbird trouble with new Humminbird

[IA4PATS]

I have a brand new 859 ci hooked up to a brand new Terrova. But the depth is jumping all over the place. Any thoughts?

[BringAnExtension]

Just thoughts: Is the transducer mounted securely?  Is the transducer mounted at the right angle?  Are all of the connections seated tightly?

[IA4PATS]

I am using the transducer in the trolling motor. I keep checking the connections too. Thanks.

[tunrevir]

Does the depth reading jump all over when the trolling motor is not running and then begin to jump when the motor is on?  If so this is an interference issue and I believe there are some cables that can be purchased and installed to remove the electrical interference.

Tunrevir~

[IA4PATS]

I am pretty sure it does it if the motor is running or not

[Hoey]

Do you have the correct ducer selected for the sonar?

[mavs]

IA4PATS,

More than likely you're unit is not getting the power it needs to operate properly. take a voltmeter and check how much the Humminbird is getting. I assume you are also running your unit on the console at the same time. In my boat, which i run hds 10 &8 I had to install another battery to make both units work properly. Just one starting battery is not enough to run two HDS units, radio, sirius radio in cigarette lighter, and livewells.

I would disconnect your console unit and run the Bird and see if that fixes problem.

[IA4PATS]

hoey, I have never had a unit this advanced, so....I have no idea 

mavs, I will try that.

I also read somewhere that if I don't have the two finders set right, they might be interfering with each other. 

[Hoey]

I know very little about Birds, but with Lowrance, it is important to select the correct transducer type.  It should be in the setup menu for sonar.  You can call Minn Kota here 800-227-6433 to get assistance.  

 

[IA4PATS]

I called Humminbird, And they said not to use the built in US2 transducer. They are not compatible. I thought the two companies worked together? 

[h8go4s]

According to the compatibility list dated 6/15, there is only one 859 model that is compatible with the Minn Kota US2 transducer, and that is the 859ci HD Combo. What model is yours? Here's the link to the list:

http://www.humminbird.com/support/faq/?c=114&p=1&q=us2

 

[IA4PATS]

I have the DI. 

[h8go4s]

There's your problem. The us2 transducer in the Terrova is a 2D transducer, and will not work with DI sonar. At the bottom of the compatibility chart that I linked in my previous post, is this note:

"Please note, all US2 trolling motors are 200kHz/83kHz DualBeam compatible and only provide traditional 2D sonar."

To use your Di unit on the Terrova, you will have to mount the DI transducer to the bottom of the trolling motor. I believe the Terrova manual illustrates this. Lots of guys have done it with both DI and SI transducers. It's not rocket science.