HDS Gen3 Chirp

[bassinyea]

I noticed on my HDS gen3 9 that when I was running high or medium chirp, whenever I switched to structure scan there was a lot of disturbance on my  images.  Switched my 2D sonar back to 200 khz and immediately the cloudiness on the structurescan image went away.  Was confused so I called Lowrance and they explained that with the typical setup(LSS2 and 83/200 transducers), you can't use chirp and structurescan at the same time and expect good structurescan images.  On mine it makes the entire water column look cloudy.

 

Just wanted to throw that out there incase any one of you had noticed this and were wondering about it.

[eddallen]

There is no problem IF you have both XDCR's connected to the Gen3.

 

[Slade House]

The answer above makes no sense to me.  

[bassinyea]

edallen not sure what you mean by that.  I have both transducers connected to my gen3.  lss2 and 83/200 skimmer.  What transducers are you using?

[Slade House]

Edallen ,  a 

On 6/22/2016 at 9:51 AM, eddallen said:

There is no problem IF you have both XDCR's connected to the Gen3.

 

First off, these aint hds 7 generation anything, these are i think hook screenshots.  

The biggest issue i see here is that you are running your sidescan at 40 feet range in 120 feet of water (the bottom picture).  You don't seem to get it, maybe you don't have all the answers yet chief.

[Slade House]

7 hours ago, bassinyea said:

edallen not sure what you mean by that.  I have both transducers connected to my gen3.  lss2 and 83/200 skimmer.  What transducers are you using?

Ok, so i have the HDS 7 Gen 3 with the 3d structure scan transducer and the 3d structure scan box .  Here is the problem and solution.  If you;re running the structure scan and the high chirp downvision  , Im gonna assume you have the structure scan transducer on 455 kHZ frequency, while running the 83/200 kHz ducer on a 200khZ with high chirp (which does  bump up the signal even more than 200kHZ.       The frequencies aren't far enough apart to get good frequency separation , and instead you get muddy noise.  just like when i produce a song , if i take the vocals , drums, and instruments and set each of their frequencies within a close range the song is gonna sound like muddy brown noise.  

 

Solution if you must run both , run the structure scan on 800kHZ and the 2d chirp as normal.  thats what works for me.  

Also when lowrance or other companies say in their ads "...... at the same time"  doesn't equal  ="simultaneously" 

 

[bassinyea]

Thanks Slade I will try that out tomorrow.

[eddallen]

On 6/26/2016 at 10:13 PM, Slade House said:

The answer above makes no sense to me.  

On 6/28/2016 at 6:55 AM, Slade House said:

Edallen ,  a 

First off, these aint hds 7 generation anything, these are i think hook screenshots.  

The biggest issue i see here is that you are running your sidescan at 40 feet range in 120 feet of water (the bottom picture).  You don't seem to get it, maybe you don't have all the answers yet chief.

 

You are right...these are from a 9" Gen3.

There is no issue with the screen shots at all. I have the range exactly where I need it. Not everybody is a Bass fisherman!

And to answer Bassinyea...TM-185 and LSS-HD for these screen shots. I have since switched to a SS3D for the 9 and a TotalScan for the 7 in the back.

[bassinyea]

32 minutes ago, eddallen said:

 

You are right...these are from a 9" Gen3.

There is no issue with the screen shots at all. I have the range exactly where I need it. Not everybody is a Bass fisherman!

And to answer Bassinyea...TM-185 and LSS-HD for these screen shots. I have since switched to a SS3D for the 9 and a TotalScan for the 7 in the back.

I am contemplating buying a totalscan transducer to use with my HDS Gen3 9.  I see that the new software version supports it.  What I want to ask you though is this, does the totalscan transducer provide the same clarity on downscan and side scan as the LSS does?

 

Thanks.

[eddallen]

20 hours ago, bassinyea said:

I am contemplating buying a totalscan transducer to use with my HDS Gen3 9.  I see that the new software version supports it.  What I want to ask you though is this, does the totalscan transducer provide the same clarity on downscan and side scan as the LSS does?

 

Thanks.

TotalScan is very good. The clarity will change with water turbidity. It is very sensitive but naturally the 2D isn't as good as my TM-185-HW. TS is designed to 'do it all' with a single transducer, and it does that well. The structure and downscan views are at least as good as LSS-HD.

[Blgreene89]

On 6/28/2016 at 10:07 AM, Slade House said:

Ok, so i have the HDS 7 Gen 3 with the 3d structure scan transducer and the 3d structure scan box .  Here is the problem and solution.  If you;re running the structure scan and the high chirp downvision  , Im gonna assume you have the structure scan transducer on 455 kHZ frequency, while running the 83/200 kHz ducer on a 200khZ with high chirp (which does  bump up the signal even more than 200kHZ.       The frequencies aren't far enough apart to get good frequency separation , and instead you get muddy noise.  just like when i produce a song , if i take the vocals , drums, and instruments and set each of their frequencies within a close range the song is gonna sound like muddy brown noise.  

 

Solution if you must run both , run the structure scan on 800kHZ and the 2d chirp as normal.  thats what works for me.  

Also when lowrance or other companies say in their ads "...... at the same time"  doesn't equal  ="simultaneously" 

 

This question is not just for Mr. House, but would like to hear from him as well. I just purchased the Lowrance HDS gen 3 with the 7" screen it has the 3d structure scan this past summer for my bass boat. I'm still amazed at what I  was missing out on utilizing only 2d sonar and not able to interpret that thing without a chart. I still feel like I haven't learned about how to get the best picture.

 

My question is how can I get the very best picture of whats on the structure scan (side scan), down scan, and 2d? What khZ should each of the 3 sonar panels be in for instance 2d in high chirp, and down scan on 800khZ?

 

How far should I be scanning out to the sides with the structure scan (side scan)? This defaults to 455khZ on side scan (I called lowrance they said it was normal because of the transducer having 3d capabilities).

 

I think I can change down scan between 800 and 455khZ I have to look back to be certain.

 

I like running 4 screens at once the 4th being my chart screen or I could give or take 2d at times. I generally bass fish in rivers and creeks depth mostly being at 15 feet at times in stained water, however I have seen it 30 to 40 feet.

 

My transducers are the SS3d and the 83/200 skimmer transducer with the structure scan box.