Humminbird Side Imaging Forums

General => General Discussion => Topic started by: XgonefishinX on May 16, 2011, 06:14:13 PM

Title: Twin sonar units
Post by: XgonefishinX on May 16, 2011, 06:14:13 PM

Hi I own a 797 sidescan how can I add a di unit to work together

Title: Re: Twin sonar units
Post by: ffmedic147 on May 16, 2011, 07:16:26 PM

Explain what your asking a little better. Are you trying to add another 797?

Title: Re: Twin sonar units
Post by: Roddy on May 16, 2011, 10:13:10 PM

Xgone; I have a 797 SI unit and a 570 DI unit running at the same time. Xducers are seven (7) feet apart. units are set to different Freq. I have had no trouble with this setup.

Title: Re: Twin sonar units
Post by: Humminbird_Greg on May 17, 2011, 12:55:24 PM

What are you meaning by “work together”?
Are you meaning linked together so that the units share some form of data between them or are you meaning that both can be run on the same boat at the same time without interfering with one another?

With the 797 unit you are limited to the InterLink accessory for linking it to another unit.

With two sonar units on the same boat there is always the possibility of getting sonar-to-sonar interference as most of our units use the same 200kHz frequency for the 2D sonar.  If you do get this; try turning on and up the Noise Filter menu on the unit that is showing the interference.  If that does not help enough than try setting the Lower Range menu to a manual setting that is different than the other unit.