Bass pro advertise these units as having 4000 watts peak to peakin in all their catalogs and sale papers. Humminbird store says 2400 watts peak to peak. Which one is correct.
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Bass pro advertise these units as having 4000 watts peak to peakin in all their catalogs and sale papers. Humminbird store says 2400 watts peak to peak. Which one is correct.
2400 is correctQuote:
Originally Posted by J_ROW
I just checked on this: all of the DI units for this year are running a 4,000 watt ptp (500w RMS) transmitter.
This was confirmed through Engineering.
Inquisitive minds might be interested to know....Quote:
Originally Posted by Humminbird_Greg
Just what is the advantage/disadvantage of 2400 watt vs 4000 watt peak to peak...??
Rickie
I was under the impression that the 596hd di , 597hd di were 2011 items and came out this year in production. If thats true why were the boxes printed as 2400 watts peak to peak and then advertised by the hummingbird store as 2400 watts peak to peak. I would like to get this straight before I lay down 5 or 6 hundred on one of these units.Quote:
Originally Posted by Humminbird_Greg
Rickie,
The advantage of a higher powered transmitter is that it can show weaker sonar returns that a less powerful unit may not be able to do (a stronger transmitted signal = stronger sonar returns from targets). It will also allow you to track the lake/river bottom in higher noise conditions such as when running at high boat speeds. The disadvantage would be that the unit draws more power.
J ROW,
The 596c HD DI and 597c HD DI units are 2011 products. The problems with getting the specs right on the Humminbird web site, boxes and all are all due to some (late in the development cycle) changes made to the whole DI unit product line and a later manufacturing change that included only some of the products. The boxes had already went through proofing and were at the printer so were not changed in time. The Humminbird web site was corrected on most specs but it seems we still missed one or two. Unfortunately we cannot correct the web sites of other companies who sell these products.
All of the new DI units have the same 4,000 watt peak-to-peak transmitter.
J ROW''''''''''''''''''''''' i dont blame you this is a lot of money that we are infesting in ,for the majority of us,including me just recreational fishing. im confused now what the ptp power is on my 597 hd/di unit now. i can tell you this, are far as to the performance of my unit, im am more than pleased to say the leased about it.it out performs my 997 in every way that i can think of. the 50 channel gps locks onto satellites way quicker,it boots way faster, the scroll and pages are way faster,even my navionics card responses better .the screen is much brighter.you wouldn't believe how much easier it is to see .the only thing that it lacks is side scan. if you have any questions about the 597 hd/di feel free to ask me.ive got more than my moneys worth with it.its a great unit.in my option anyways.Quote:
Originally Posted by J_ROW
RMS value is equal to 0.707 times the peak value of an AC voltage. Example: divide Peak-to-Peak by 2 (or in half) and multiple by 0.707 = RMS voltage. So if you take 2400 watts peak to peak, divide by 2 = 1200 times 0.707, you get 848.4 watts RMS which is good for over 1000 feet. When is the last time you caught a fish 1000 feet deep?
This ain't the way they calculate the rms Bill. Trust me. It is BS the way they come up with the high power ratings of these transducer units. It is math magic, and cannot be measured in any conventional means, only calculated.Quote:
Originally Posted by Barnacle Bill
Ment to add that you gotta divide their reported peak to peak by 8 to get their advertised RMS equivalent. Therefore a 4000 watt peak to peak advertised value would have a 500 watt RMS value.
Yep. I know the mathematical formula they use to base these wild values on, but most the folks squawking about this values (relationship) don't have a clue what it means...ha
So with all this confusion about mathematical formulas and such......and advertised ratings .....and...and...and....Quote:
Originally Posted by Cane Pole
Would the average fisherman even be able to tell the difference on their screen images of 2400 vs 4000....??
That's what the average joe sonar user would really need to hear....:)
Rickie
cane pole.......... yall have got me all ****** up on the ptp power of my 597hd/di. the box that my unit came in says 2400. greg says 4000. you say that it does matter what the manufacture says, because hey kind of curve things a little bit to sell there units.all that i do no is heres what it looks like on kentucky lake.what see in this picture is just what i see live on the unitQuote:
Originally Posted by Cane Pole
That's a much better image than I'm getting on my 597, what settings and frequency are you running?
Sorry to confuse anyone. All of the manuf now use the "manipulated" power formula to arrive at these extremely high peak to peak values. They call it a relationship of 8x. Pan Man has also verified the math that produces these high power values of rms and peak to peak. Based on this formula, what they advertise for power on the box is true, however there is no conventional way to measure the advertised levels of power. Forget about conventional power formulas. The manufs have created their own little world. Most of the reps ain't got a clue where the 8x came from. None could tell me, so I chased down the truth as I thought they were BSing me. ha
first picture 800khz the second is traditional 2d using 200khz on the top 455khz on the bottom. i just noticed yesterday that i do not have the currant software for my unit. i will install today. ill let everbody no the results. i dont no the changes from my software version to the new one but i thought id go ahead and try it out. i do not no why that you are not getting a picture like the ones that im getting unless you are getting some kind of rf noise that can make the viewing look fuzzes .try using a temporary external battery and have no other electronics on to test to see if this the problem. call humminbird they will give you some helpful tips to try also. they will give you a free power cable with a built in noise choke if you think you need one.i almost forgot go to main menu/sonar/noise filter change setting see how that helps. if you have transducer mounted on trolling motor you might want to run a groung wire. i have a ground wire attached down on the skeg were that little zinc corrotion thing is. i just took the screw out and put the wire on it and put back on,then run the wire back were i mounted my unit. on my boat i have extra ground wires that are pig tailed to one common ground.priity convenient for me . as far as other setting go,i cant think of anything else.theres really not many things to do other than sensitivity and sonar options and differant views to scroll though. hope that this helps you.keep us updated on how things are goingQuote:
Originally Posted by pab1981
no problem cane pole thats why i like this site. i learn new stuff all the time.Quote:
Originally Posted by Cane Pole
I'd believe Canepole a lot quicker than I would me. I've just forgotten most of my electronics training.:eek: Point I'm trying to make is you really don't need all that power for the type fishing we do. On the other hand I have no idea how SI technology figures into this since the distance sideways is a whole lot more than the depth.
My question still stands......would the average joe sonar user really be able to even tell the difference...??Quote:
Originally Posted by rnvinc
Rickie