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Could you take a hb di transducer and use a switch to flip it on di on a 998,would di be better,or take old si ducer and lean it where one side would be straight down and not use other side and use it for straight down di then use a switch to go back to right ducer,or would it be any different? Just a thought.
Ive used both setups,a di transducer,that came from my 597hd/di unit and I used a rotated hdsi transducerQuote:
Originally Posted by genec
.Both setups work well.i didnot use a switch with either setup but a switch can be used
We did all those experiments here Gene...
http://www.crappie.com/crappie/showt...=Experimenting
Both the scenarios you list will work...and it is definitely better DI images...(you can see some of mine and kosmo's DI images in the above thread...)
The switch is for mere convenience...in being able to choose the DI xducer of the stock HDSI xducer....
Or the DI xducer can be plugged right into the SI unit like kosmo did....
The rotated HDSI xducer also works...with even better DI results than the DI xducer...
Rickie
So if i use another si ducer and tilt it,would i have to block pins where it plugs in at? Also what cable would i need to switch back to orignal ducer?
If using a HDSI xducer rotated 60°...it's best to eliminate the pinging to the opposite SI piezo that would be pointing up to the surface...(because the returns from this "upward pointing" piezo can cause some crazy reflections off the water surface...making the images yukky)...Quote:
Originally Posted by genec
There are 2 ways to disconnect the "upward pointing" piezo...
*Remove the pin in the HDSI cable end that feeds that piezo....
*Remove the pin in the AS SIDB Y cable that feeds to that same piezo....(I'll explain the need of the AS SIDB Y cable in a sec)...
This does not eliminate the electrical signal sent by the transmitter for that piezo ....it merely disconnects the channel to keep the electrical signal from reaching the piezo pointing "upward"...
The effect of this is that there will be no SI image on the side of the channel disconnected...it will just be black on that side of the SI image...
Because the HB "DI from SI" is a blend of the left and right SI data...this "black" side of the SI image is just not seen in the DI view....so the DI view will look normal...(with 1 exception)...
That exception is ...if the "DI Width" setting under the Sonar tab is set to "Narrow"....there will be no DI image at all...
The "Narrow" selection of the "DI Width" setting tells the processor to display "only the return echoes common in both the left SI and right SI"...
Because of the disconnected SI channel in the "Rotated SI xducer"....there are no echoes from the disconnected piezo to be "common" ....therefore no DI image on the display...
So, in a nutshell...make sure the "DI Width" setting under the Sonar tab is set to "Medium" or "Wide"...and the DI image will look like a normal DI Image on the display....
The SI image will look like a SI image with a black side on the disconnected piezo side....altho somewhat darker at the edge of the image...because the SI piezo is now pointing "down" instead of "sideways"...
_________________
Now the 2nd part of this setup requires the use of a 2nd HB xducer capable of 200kHz connected to the "Dual Beam" side of the HB AS SIDB Y cable ....
This is because the 2d piezo in a "rotated" orientation xducer aims the 2d sound pulse to the side at an angle...instead of straight down....causing erroneous depth readings that confuse the processor...
This 2nd xducer capable of 200kHz can be any HB xducer with the "house shaped" connector end...because the AS SIDB Y cable is only going to connect the 2d channel ...
When connected to the "Dual Beam" leg of the AS SIDB Y cable ...(there's only 2 wires in the "Dual Beam" leg of the AS SIDB Y cable ....1 wire going to the 2d piezo - 1 wire to drain/ground )....
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Now if you want the convenience of switching back to a regular HDSI xducer for normal operation...you can add to the above mix ...a HB TS3 switch ....
The above AS SIDB Y cable configuration using the rotated xducer plugs into 1 leg of the HB TS3 switch ...
The regular oriented HDSI xducer plugs into the 2nd leg of the HB TS3 switch...
The HB TS3 switch position then dictates which xducer setup to use ....
Clear as mud...??
Rickie
Thanks guys,komos had deleted his pics
Genec,what pictures would you like to seeQuote:
Originally Posted by genec
some of your di off a slanted ducer verses off of di ducer,would like to know if its worth messing with,thanks
In case others have not seen my shots in the other thread...:
Here's some examples of the same brushpile..scanned from the same direction...1 right after the other...
DI from SI....
http://i477.photobucket.com/albums/r...psfdd0baf5.png
DI xducer...
http://i477.photobucket.com/albums/r...ps2cdf7f5c.png
HDSI rotated 60°
http://i477.photobucket.com/albums/r...ps9886268c.png
Rickie
Genec,both the 597di transducer and the rotated hdsi transducer perform better than the di from si.the 800kHz is were theres a big difference. The first thing that stands out when use either method ,is when the unit is set to 800,bottom will show as a white line.you can tell theres nore signal strength being dirrected to that area were water column meets the bottomhttp://i826.photobucket.com/albums/z...psc4f3450e.png
Thanks guys
Guys, I have (1) 998c SI mounted on my stick steer boat. I have a TS3 switch already installed and a SI ducer on stern and TM. I have now installed a 360 TM upfront.
With the new 360 mounted I don't feel I still need the SI, I do use 2D a lot to see my jig over brush with slit screen 2D/DI.
Question: Rotating the SI and adding a 2d .... plus the 360 would be a lot of stuff on the TM IMO. But if I wanted to improve the DI on the TM what would you suggest? Doug
Replace the HDSI xducer on the TM with the XTM 9 WIDE DI 20 T ....Quote:
Originally Posted by rdjj71m
This will give you a dedicated "down pointing" piezo and a 83kHz/200kHz 2d piezo in the same TM style xducer housing...(no extra 2d xducer and AS SIDB Y cable needed because the 2d piezo is included in the XTM 9 WIDE DI 20 T )...
Then the HB TS3 switch would allow you to choose to see SI from the transom mount HDSI....or "dedicated DI" from the TM mounted DI xducer..
Your 2d sonar views would look normal....and only dependent on which xducer the HB TS3 switch has selected...
Your SI views when selecting the XTM 9 WIDE DI 20 T would show as right SI normal - and left SI black (because of no data coming in thru the left SI channel)...
Then, as normal...turning on the 360 would disconnect the entire HB TS3 switch/HDSI/XTM 9 WIDE DI 20 T setup...
I think this would be a dandy setup...
Rickie
Genec......... XTM 9 WIDE DI 20 ....do you think that this might be your best option along with the TS3 switch ? Ive been looking on the internet and ive found the TS3 switch for about $65 and the XTM 9 WIDE DI 20 FOR about $120
Rickie, thanks for your input. It looked like you have put in a lot of time testing these two setups. I truly would like better DI images, but with limited space adding a second unit is not practical. This sounds like a plan and easy to modify from my setup now. Looks like I need to order a XTM 9 WIDE DI 20. Doug
I agree with kosmo...Quote:
Originally Posted by kosmo
The XTM 9 WIDE DI 20 T is a much simpler setup than dealing with the rotated HDSI xducer and an additional Dual Beam xducer...
The images are not that much better with the rotated HDSI....just somewhat better...
Just remember the XTM 9 WIDE DI 20 T is a TM style puck...and accommodations will have to be made mounting the XTM 9 WIDE DI 20 T in any other fashion than on a TM...
(Like maybe on da'ducer apparatus®)...
http://i477.photobucket.com/albums/r...psc30732e6.jpg
Rickie
Thanks kosmo and rickie,i recond i will wait a little while,just paid for new lower unit in april then motor caught fire 2 days later,first was 1600 and second 3000 but insurance paid 2300,so i wait till i build up a little more money,again thanks,still planning on doing it later and will need to know where kosmo found those deals
Hey guys,i was just looking at a hb ts3 switch,was wondering how many prongs do it have and it just looks like a switch that converts power from one leg to opposite leg,may be 3 or 4 legs to switch?do you know how it works?
I DON'T SEE HOW THAT SWITCH WORKS,IT LOOK LIKE YOU SHOULD HAVE A PLACE TO PLUG DUCER IN AND ON OTHER SIDE A PLUG TO GO INTO 998 UNIT:dono
The HB HB TS3 switch has a "Line Thru" leg (for 1 xducer)..and a "Switch Thru" leg (for a second xducer)...and then 1 cable going to the head unit...
Basically the "Line Thru" is when the switch is not energized...(this leg can be used with no power to the HB TS3 switch at all)..
Then switching to 12v energized....it swaps the xducer cable wire channels to go thru the "Switch Thru" leg...
Rickie
genec, I have the old switch before the TS3, you would understand it easy. It has two xducer cables into and one head cable out. I'm sure they had some reason for changing it. Mine is 4-5 years old.
Well I ordered the XTM 9 WIDE DI 20T today, can't wait to try this setup on the water.
The older model TS 2 W switch was energized in both positions of the switch...causing battery drain issues...Quote:
Originally Posted by rdjj71m
HB changed this in the HB TS3 switch so that in the "Line Thru" position, there was no 12v power energized at all..
Rickie
Thanks Rickie for the explanation, I was sure there was a good reason. If I had not retired I might order the new one !!!!!!!!!!!!!!!!!! But thats a lot of soft plastic crappie baits LOL.