Need help with basic sonar settings on Helix Mega unit

[htbboats]

Just installed for a friend a new Helix 12 Mega unit. We're having trouble getting a good pic on sonar. I'm pretty sure some of the setting are just off. I adjusted the contrast and sensitively settings with not much luck. So I'm thinking the "Chirp" , MHz setting are off. Anyone set me on the right track? Fishing shallow water, 20 ft or less
Thanks

[Bob B]

Not gonna see much on 2D sonar in shallow water except depth and bottom contours ..... can you post a pic of what you are seeing?

[sfw1960]

Default settings out of the box (reset defaults if need be) and if it's not working well, it's likely a poor installation.

As Bob stated - we need pics to try to help diagnose.

[htbboats]

Thanks to both of you for your help. I got back to it yesterday and set the chirp setting from high to medium. Also changed the frequency. Not sure it needed both but got a much better pic. I'll tweek on it more later when time permits.
Mark

[G4bama]

These units are so sensitive that you may need to make minor tweaks every time that you are on the water. I recommend keeping a copy of the manual on your phone or tablet and take it with you on the water. I am still learning how chirp works and playing with the settings.

[sfw1960]

These units are so sensitive that you may need to make minor tweaks every time that you are on the water. I recommend keeping a copy of the manual on your phone or tablet and take it with you on the water. I am still learning how chirp works and playing with the settings.

I would say you HAVE TO make adjustments OTW - they are sort of plug N play, but need adjustments to get the most from them!