Thread: Down-image software updates

Originally Posted by pulplip fiction

i have a 798si and have updated the software for the down imaging, but have not yet been on the water. my question is - are these the same type of images provided by structure scan? reason i ask is someone told me that the lowrance was the true down image, while the humminbird just manipulated the image to where it appeared to be something like a structure scan image. thanks in advance.

hummingbird si units were not meant to be di.they dont have di element. lowrance does have di eliminate .hummingbird uses the two si eliments to get there di. the two si eliements send the signal away from the boat at an angle,but there is still coverage directly below the boat. no manipulation,what it sees is what you get.theres a weaker signal in the di area because of the lack of di element .for this reason lowrance will have better di quality . i hope this helps. if you have more questions please ask

Just as kosmo said the previous SI do not have their own dedicated DI crystals in the xducer..they use the info from the SI crystal and render the image to make the DI image...

The new HB units that are designated HD DI...do, in fact, have these dedicated crystals in the xducer which gives what you call "true DI"...

Rickie

Originally Posted by rnvinc

Just as kosmo said the previous SI do not have their own dedicated DI crystals in the xducer..they use the info from the SI crystal and render the image to make the DI image...

The new HB units that are designated HD DI...do, in fact, have these dedicated crystals in the xducer which gives what you call "true DI"...

Rickie

thes units are the 500 series hd di and the 788 hd di units

Are the 898C si true DI , ?????

Originally Posted by HARLEYBOY

Are the 898C si true DI , ?????

no

Originally Posted by HARLEYBOY

Are the 898C si true DI , ?????

dont let anyone tell you that hummingbird does not have true di. thats not true.the si units use the si elements .both lwrance and hummingbird use there software to interpret the echos received from there transducer. the difference is lowrance has a dedicated di element that is pointed striate down hence they get a stronger echo return

Originally Posted by pulplip fiction

i have a 798si and have updated the software for the down imaging, but have not yet been on the water. my question is - are these the same type of images provided by structure scan? reason i ask is someone told me that the lowrance was the true down image, while the humminbird just manipulated the image to where it appeared to be something like a structure scan image. thanks in advance.

Sonar imaging system for mounting to watercraft heres the hummingbird sonar.something i think thats interesting is the di pictures

Originally Posted by kosmo

hummingbird si units were not meant to be di.they dont have di element. lowrance does have di eliminate .hummingbird uses the two si eliments to get there di. the two si eliements send the signal away from the boat at an angle,but there is still coverage directly below the boat. no manipulation,what it sees is what you get.theres a weaker signal in the di area because of the lack of di element .for this reason lowrance will have better di quality . i hope this helps. if you have more questions please ask

ok - so lowrance has a better down image product, are they compatible with the humminbird 798 in regards to working simultaneously? i realize you cant link them together, just wondering how to make something work. i would like something larger with DI capability up front - and move the 798 to the console. thanks again.