Author Topic: Shallow Sonar Performance issue with networked 1197ci / 898ci  (Read 1639 times)

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Offline rdolson

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I have an 1197Csi and an 898Csi that are connected via ethernet.  Both are running software version 6.18.  I have one SI and one high speed transducer mounted to my transom and both are connected to the 1197.  I have recently noticed that my depth readings in shallow water are showing double or triple actual depth with good double and triple echos showing up on the sonar at the same time.  Both units are displaying the same depth and it usually fixes itself at about 11 or 12 feet.  Anybody got any ideas on how to fix this?


Offline ITGEEK

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Re: Shallow Sonar Performance issue with networked 1197ci / 898ci
« Reply #1 on: June 13, 2012, 04:14:00 AM »
Maybe your sensitivity is too high (in shallow water), and you are getting
multiple bounces from the sonar.
I guess this can happen on hard bottoms.

Offline Humminbird_Greg

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Re: Shallow Sonar Performance issue with networked 1197ci / 898ci
« Reply #2 on: June 14, 2012, 07:48:30 AM »
I have an 1197Csi and an 898Csi that are connected via ethernet.  Both are running software version 6.18.  I have one SI and one high speed transducer mounted to my transom and both are connected to the 1197.  I have recently noticed that my depth readings in shallow water are showing double or triple actual depth with good double and triple echos showing up on the sonar at the same time.  Both units are displaying the same depth and it usually fixes itself at about 11 or 12 feet.  Anybody got any ideas on how to fix this?

Shut the unit off  to see if this fixes this or not.  If it does than try turning on and up the Noise Filter feature on the unit that is showing the wrong depth.

If this is happening with only one unit running; see if it only happens when some other device on your boat is running (main motor, trolling motor, bilge, aerator…).

If that does not point to anything – try adjusting the Surface Clutter menu to a higher setting and if needed; set the Water Type menu to the Salt (deep) setting.
Greg Walters at Humminbird
gwalters@johnsonoutdoors.com

Offline rdolson

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  • Joined: Oct 2011
  • location: Monticello, MN
  • Posts: 5
  • Unit(s): 1197ssi, 898csi, Helix 12
  • Software: varies
  • Accessories: gps, SI, High Speed, Universal Sonar
Re: Shallow Sonar Performance issue with networked 1197ci / 898ci
« Reply #3 on: June 15, 2012, 02:51:08 PM »
I adjusted surface clarity from 1 to 3 and the problem went away....


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