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Digital vs Analog advantage for FF?

Old 09-07-2004, 02:36 PM
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Default Digital vs Analog advantage for FF?

First time to by a fish finder and don't know the difference between digital and analog models. Is there any advantage over the other?

Thanks.
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Old 09-07-2004, 02:55 PM
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Default RE: Digital vs Analog advantage for FF?

Maybe you need to educate us a little bit before we begin. Just what do you mean by digital and what do you mean by analog? Those are terms that are not often used to describe fish finders.

I could guess, of course. By digital you might mean those neat little round guages that stick in your dash and give you some numerical readout of the depth of the water. Then by analog you might mean one that has some sort of picture on the screen, probably accompanied by a number displayed on the screen somewhere too. If those are the choices you are facing then its pretty clear that you aren't looking at top-of-the-line equipment, or even mid grade stuff either for that matter. At any rate the picture is always better, in every case.

Anyway, please explain what it is you're looking at and looking for a little better and there are tons of guys here who will be more than happy to tell you what they have tried and what works and what doesn't.

Thom
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Old 09-07-2004, 05:47 PM
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Default RE: Digital vs Analog advantage for FF?

Hi Thom,

Ok…how’s this…I’ve seen advertisements of some models of FF being “Digital” like Raymarine DS500X making a comparison to other brands (not sure who they were comparing to) but I guess it has to do with how the unit sends/processes the signal to/from the transducer. In either case the resulting echoes are displayed on some type of color/monochrome display.

Digital - I would think that a digital unit would pulse the transducer with a digital signal (1’s and 0’s) on it’s carrier frequency in a manner that would allow the returning signal to be processed through a microprocessor and based on the data that went out, interposes what it thinks it saw on the display thus allowing better resolution and item definition.

Analog - A simple units that ping out and just displays what was echoed with any additional processing of the signal.

A better example: Regular TV reception with an antenna is primarily an ANALOG signal on a carrier frequency while newer satellite reception is a DIGITAL signal on a carrier frequency. The user sees the same information although it was processed/decoded differently but yet the digital signal can carry much more information on the carrier.

I hope this makes things clearer, I’m asking if it’s worth the extra money to go with a digital model.

Thanks.

MQ
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