Humminbird Side Imaging Forums
Other Humminbird Products => GPS Chartplotters and Non-SI Humminbird Units => Topic started by: BazzaD on January 14, 2012, 05:28:57 PM
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I there,
I am really struggling with the sonar set up on my 788ci, no matter what settings I try the screen resolution is really poor. One of the reasons I purchased this unit was the improved screen resolution over the HDS (640 x 640 vs. 480 x 640).
Attached is an image capture of typical screen output I get in salt water, any ideas or suggestions as to how I can try to improve on this would be sincerely appreciated.
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Have you at least set it to saltwater mode?
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What do you have your chart speed set to? A chart speed set high relative to your boat speed will elongate the images and cause thing to look grainy.
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BazzaD,
Have you had a look at these 9 videos by Doug Vehrenberg
http://www.dougvahrenberg.com/Videos.html (http://www.dougvahrenberg.com/Videos.html)
and set chart speed same as boat speed
Geoff
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Yep, chart speed too high....
I was having the same problem with my 778C
A chart speed of 4-5 is good for trolling speed.
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I think the rule of thumb is chart speed = boat speed.
Chuck
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Many thanks for the responses, sorry been a while since I have been out. I will adjust the chart speed down and see, I think it is now on 6 or 7 but will have to confirm.
For sure it is set to Saltwater. Thanks will get some more info when out next.