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I have just purchased a this unit 1199ci HD SI with only 330 hrs use, and I plan on running it up at the bow on my RAM replacing my 959ci HD DI.
Could someone please suggest the best set up for it to see fish best on DI and sonar windows?
Should I use the same set up as on my 999ci HD SI that I run at the helm?
Thank you so very much to everyone in advance
Frank
That unit doesn't have DI, and neither does the 999, they have simulated DI views created by blending the two SI pulses.
The 1199 is just a bigger display version of the 999 so the settings would not be any different.
I do not know the finite details of how they achieve the DI, but it works quite well in my 999, so I will set it up the same with the split window for DI and SI or DI and sonar.Quote:
Originally Posted by Wayne P.
Thank you again for the info.
BTW, you are right about the larger display, since the 1199 is 1.5X wider than 999, which now makes me wonder if I should lower it to the deck when going over 50+mph.
Depends on the type mount you're using. If using a RAM style and fishing rough water, then you should lower it. I've used the larger "D" size RAM mounts with a 1198 and they tend to loosen over time.
I moved this Thread from the Humminbird Image Interpretation Forum to the more appropriate Humminbird Sonar/GPS Forum.
Dig, You have received info from experts here. If you think Waynes description of the DI is just a factoid, compare the DI you see on the 1199 from the original(to the latest model) Helix you will see how much better actual DI is than the simulated version you get even if it is a bit larger. JMO Bob
Note: Even if it is bigger than the 995 your DI will not be as good. The coverage on the 1199 is so much narrower (and weaker)you will completely miss many fish. I used 2D on my old 1197 and 1198’s instead of DI. Bob
Exactly... You don't know what you are missing until you see what you are missing.Quote:
Originally Posted by bobcoy
He has a Down Imaging unit (959ci HD DI Combo) and a Side Imaging unit (999ci HD SI Combo) so he should already see the difference between composite DI and real DI.Quote:
Originally Posted by SLYDoggie
Thank you for moving it since i did not know where it would be more appropriate.Quote:
Originally Posted by SLYDoggie
Bob,Quote:
Originally Posted by bobcoy
I don't take Wayne's description a factoid but I believe that he accurate in the info given. However, perhaps I am not noticing the details as much as those how know much more than I do. I have run my 959 and 999 in DI and I don't see that much difference, since what I see is adequate for my needs.
Since everyone seems to stress the fact of how much better the DI is on the 959 DI Combo, should I keep it and run it along side the 1199 HD SI off the same transducer with a splitter to feed info to both?
I was planning on selling the 959, and do everything with the 1199, yet I want to get the most benefit without a set back. I am a casual fisherman and do not do tourneys anymore do to the changes in attitudes in those areas.
Please know that your input has great value to me. Thank you
I must have misinterpreted your post. I tried to make that “DI” useful, but found it lacking as far as letting me know the presence of fish. You did say you used a combo screen of sonar( I am assuming 2d) And that DI so that would let you know if there were fish down there. I preferred the map and sonar together. Good fishin Bob
WayneQuote:
Originally Posted by Wayne P.
I tried to find information on the difference between composite DI and real DI by googling it, yet I could not find anything to look at to get a better reference. since I am not sure which direction to go know.
Do you know where I could find these info?
To get the benefit of dedicated DI on either SI unit, you would have to Ethernet network them and chose the DI unit as the source for DI in the SI unit's Network Source menu and use the DI transducer with the DI unit.Quote:
Originally Posted by digthemup
Another thing is the 1100 series units have the lowest pixel density displays of any of the top of the line units, so you get larger images with lower quality. The 1100 series have about 4,000 less pixels per square inch than the 900 series. It's not as noticeable for a bow installation since you are farther from the display where the larger image sizes would be more beneficial.
No, it is just common sense what composite DI is.Quote:
Originally Posted by digthemup
Prior to Jan 12, 2010, no Side Imaging unit had a Down Imaging view.
That view was added via software update, there was no hardware involved. Every SI unit made prior to that back to the original one got software to add the DI view.
The transducer circuits are Left SI, Right SI, 2D, Temp, and shared neutral= 5 pins in the plug.
Any SI transducer with 5 pins has no Down Imaging, just composite DI views--even now which would be Helix 5's and Helix 7's.
When the number series SI units became Helix SI units, the second generation Helix SI 9, 10 and 12 models got true DI along with the MEGA Imaging freqency. Current Helix SI units with dedicated DI are the Helix 8, 9, 10, 12, and 15.
I have been looking, but I can’t find the diagram that was published. From my old memory I will try to relate. The 2 side imaging elements(left and right) covered a slice from the surface to just past vertical. The two slices intersected under the transducer. That slice was not used by SI. It was narrow(that was not related into degrees but appeared to be narrower than the 2D cone.(not much coverage) a sonar beam is strongest in its center and weaker at its outsige edges.(making that edge they were using weak and missing things) That is my recollection of about 13 years ago. Take it for what it is, an old man’s memory. BobQuote:
Originally Posted by digthemup
BobQuote:
Originally Posted by bobcoy
Thank you for a good attempt in giving me a summary of how they are making the DI beam by using parts of the SI beam in the 999 and 1199 series. I am going to use the 1199 up at the bow so the bigger screen would be better to look for structure while on the TM or casting.
Took me a while to find where I saved the illustration.Quote:
Originally Posted by bobcoy
This shows the spec coverage of the HDSI transducer at the rating of -10db.
https://i.postimg.cc/PqhS5LsY/HDSIcoverage.png
Wayne,
Which degree and color would apply to the sonar and DI beam coverage?
I was hoping to find it in my 1199ci HD SI manual, but there is nothing in it.
Thank you
Frank
Quote:
Originally Posted by digthemup
Spec coverage is rated a -10db:
There is no DI "beam", Down is computer generated using the two SI "beams".
The simulated DI view's coverage (green 75 degrees) is part of the total SI coverage (blue)=narrowed and blended.
The 2D is 83/200 kHz and their coverage are the circles (red and yellow). 83 kHz is 60 degrees and 200 kHz is 20 degrees.
Thank you, I just wanted to get an idea of the degree of coverage generated to display the DI, which I believe it's @ 1.5x of depth.Quote:
Originally Posted by Wayne P.
I have the 83/200 KHz picked as my sonar beam and 455KHz for SI.