Correct!

If you have a fiberglass hull, you are better to install the SI transducer to be over water when on plane and use a shoot thru hull transducer for on-plane 2D sonar operation, using a splitter cable. This is the most reliable setup for fiberglass hull and SI unit users. Someone should post soon all ...

My explanation is valid only for 2D sonar, NOT SI/DI.... Technically, the ping rate for the transducer is hard-coded in the firmware. And is coded to offer the best possible number of returns for a given depth. From my non-scientific test, the ping rate is about 30 pings par second (for single beam)...

1 kW transducer are only made in Bronze format.
And are only used on 2D sonar, preferably for depth greater than at least a 1,000 feet.

So, it doesn't work on SI/DI beam.

With pure DI units, it's impossible to "know" which side is the return.

You need SI or QuadraBeam to have directional capabilities.

If someone needs a USB/serial adapter cheap, check that link:

http://www.dealextreme.com/p/usb-to-rs2 ... reen-24512

I've got mine there, and with free shipping. But it's slow to come in the mail.
At least I didn't pay 30$ for a local one!

For fish, I'm on the fence if they hear it or not. But I'm sure they are not spooked by it. Even if they heard it, it would be no different than the whine of the trolliong motor, or the hull noise that transmit in the water.

Yes, transducer clicking is perfectly normal!!

Sonar technology only work when in water. And no, it won't work in your bath!!

If you want to test it in your home, when you power-up the unit, press the MENU button and select "SIMULATOR"

All sonars will be influenced by waves... Since it changes the height of the water column you try to scan.
And I don't think that DI sonar will be at it's best below 100 ft of salt water.

Even conventional 2D sonar is influenced by waves. The only way to cancel waves is using a TowFish.

What you need for your application is a MULTIBEAM sonar.

This will give you multiple data points on each pass.

But these systems are not for private users as they cost as much as a house!

Side Imaging Transducers won't work on DI only units...
They lacks the DI crystals in them!

You surely got it wrong...

The 788CI HD SI Combo don't exist.
and the 768 is a discontinued model.


Check more carefully your info and post back for us to help you!!

For Ethernet Networking on 700 series units, check for the "HD" designation.

You can't. Since SI data don't include depth readings.. Only the standard 2D sonar can provide depth data to mapping programs. The only difference between Si and regular 2D sonar, is once you have made your bottom profile map, some software can overlay the SI image over the map. The only way you can...

Try to start the application from the "START" menu, not from the desktop icon...