I am gnu to the world of Humminbirds, I am wondering how can you tell how far away an object (fish) may be that shows on the screen.
Is this part of the fun one has in learning, I am wondering if ya just have to learn to guess on this.
Roger from the hills of Iowa……….
I hope this is not too dumb of a question, as I am trying to learn as much as I can about this unit before I hit the water with it. 
The side imaging range should be displayed in the top right and left hand corners of the image. Those #’s tell you how far off to the side your range is 
As a “mark” on the screen passes, touch the cursor button and scroll over to the object. It will tell you the distance.
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As a “mark” on the screen passes, touch the cursor button and scroll over to the object. It will tell you the distance.
So, Youre saying the “object” is 58 feet right of the boat and 151 back?
r.dog,
you may be right, but am thinking, repeat, am only thinking aloud, that machines now a days can do the Trig on the triangle and give you the straight line distance to your object.
that again is only a quess, I’d like to know th answer too.
Jack
Most of the SI`s have distance lines one can turn on and off and adjust how far apart, to the side to get a reference.
Jack I’m with you, this has been my understanding since I bought into the SI when Humminbird came out with it some 7 years ago now. (987cSI)
The lower left and right screen becomes the max distance (151 ft from the pic above) jmo as I havent any offical statement to back this up with.
58 feet deep at the cursor and 151 feet away from the current position. The illustration is an object in the scour hole at dam 6.
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As a “mark” on the screen passes, touch the cursor button and scroll over to the object. It will tell you the distance.
So, Youre saying the “object” is 58 feet right of the boat and 151 back?
That is exactly what the unit is telling you. With cursor on the object just hit a waypoint to navigate directly to it.
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As a “mark” on the screen passes, touch the cursor button and scroll over to the object. It will tell you the distance.
So, Youre saying the “object” is 58 feet right of the boat and 151 back?
That is exactly what the unit is telling you. With cursor on the object just hit a waypoint to navigate directly to it.
So, whos right? Randy who says its 58 feet deep and 151 feet away at the angle, or acar who says its 58 feet to the side and 151 feet back?
Not trying to be a smart azz, just trying to learn more about my unit..
I have to go with acar on this one. If you notice the depth section at the top of the screen is empty.
Scroll down to page 66 and read the illustration
#2 and #4 below the example. There it is in black and white!
Thanks Randy!
What I find interesting is that if it is a hole and much deeper why does it show up bright rather than go darker the deeper it gets?
The manual is confusing on this. The box showing depth in the screen shot is blank. Meaning the unit couldn’t determing the “depth under cursor” Side Imaging can not and will not ever determing depth. The standard traditional 200 khz sonar beam always determines the depth on a Humminbird. If the cursor was placed in the water colum directly under the boat there would be a depth reading showing up in the depth box, but because it is off to the side a ways the unit has no way of determining the depth beacause the standard sonar didn’t go over it and leaves it blank. Just looking at the photo there is now way there is a hole 20′ deeper than the rest of the surrounding area. The number in the cursor box, 58.4′, is how far away from the center line the cursor is and the distance number is how far back it is from the current boat position. If you would keep moving the cursor to the right the number would increase, move it back toward the center it would decrease. The curor box doesn’t show the depth at cursor only a distance.
A little late getting back to this….
The depth of the cursor is not the depth as you are thinking of in in 2d (up and down from the surface of the water to the target or bottom. In my example shown above it is the depth of the cursor in a diagonal line from the SI transducer diagonally down to the target. Make sense???
Side Imaging does not tell you depth. The only way to get a depth reading is with the standard 2d sonar, which is active all the time no matter what screen you are viewing. When you are out with your SI unit next time or in a store with display models do this. In the SI view hit the direction button to bring up the cursor. It will put a number in the depth box at that time because the cursor is centered on the path of the boat. Now, move the cursor, left or right doesnt matter, slowly. Once the cursor leaves the area covered by the 2d sonar cone angle the depth will dissapear. You will only see a number in the cursor box then in ft which is a distance from the center line to the cursor. The other box labeled distance will give the current distance from the boat to the cursor. Hope this helps clarify what is being shown.
acar555 – call tech support to verify – I did! 
I think we are talking about 2 different things. In the screen shot you posted. The boxes across the top. The one with 58.6′ labeled cursor. I know Humminbird calls it “depth of cursor” or sometimes “slant range”. It is really just a distance from the path the boat took to where the cursor is. The user can’t move the cursor up and down in the water column to select a suspended target so it is to the bottom distance. Not a “depth” but a range. The second box labeled depth, which is empty in your pic, would be the actual depth. This box only gets filled if the cursor is placed in an area on the screen where the standard sonar passed over, giving a depth reading. I have done factory training at Humminbird when these units were introduced.
So the 58′ is the distance from the transducer to the cursor, measured at whatever angle it takes to make a straight line from the transducer to the cursor?
And the 151′ is the total distance the SI is reading from the transducer to the edge of it’s ability to read…?
Does Doc Sampson or anybody make a DVD that helps show/explain all this?
Al
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