TVG "off"

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03-23-2009, 12:29 PM
J White

TVG "off"

Curious how anyone else is liking this feature - I've got a couple trips
in so far with the new update.

On my rear unit, 797/transom mount, I really like what it does with it off.

The 787/universal sonar II on the front, I like but...
if the tm is on at all, the 200 beam has so much interference
that I can't get rid of that it's useless. BUT I turned off all but the 83 beam,
and it works pretty good :confused:

Seems like before, the 83 beam was the main culprit with my interference
problems, but I just don't know. Anybody else running into the 200 freq
problem with the tvg off? A few more trips will tell, but I still think I like it
better up front with it off, even if it means I can't run the 200 freq.
03-23-2009, 01:21 PM
rockmike

If I'm moving enough to get arches, it seems OK, but if I'm moving slowly or sitting still, it get pretty cluttered.
03-23-2009, 02:29 PM
Fisherman_Wantabe

I'm not sure I know what TVG is, I have not read or played enough with mine yet. But since I upgraded to the new version of the software I have noise problems with the big motor running and I didn't have this before??? Could this be due whatever the TVG is??? I have little dots all over the screen with the big motor is running and none with it off and using TM.
03-23-2009, 03:55 PM
J White

Fisherman, I don't know enough to get all into the tech of it, but
anyhoo, it's on the 4.510 update, under the "sonar" pulldown.

Gives you a choice of tvg on or off. Beyond that, I know they said
it stands for "time variable gain" and it has a big effect on the 2D sonar,
and supposedly "on" is how it was before the update.

But I'm just as lost as anybody - I'm too old to be gettin this deep
into electronics :p

I know it'll be a big PITA with a powerdrive tm, but I'm gonna eventually just HAVE to
try a seperate transducer with this thing, see how much of my trouble is the built in USII
03-23-2009, 08:52 PM
Fisherman_Wantabe

Quote:

Originally Posted by J White

Fisherman, I don't know enough to get all into the tech of it, but
anyhoo, it's on the 4.510 update, under the "sonar" pulldown.

Gives you a choice of tvg on or off. Beyond that, I know they said
it stands for "time variable gain" and it has a big effect on the 2D sonar,
and supposedly "on" is how it was before the update.

But I'm just as lost as anybody - I'm too old to be gettin this deep
into electronics :p

I know it'll be a big PITA with a powerdrive tm, but I'm gonna eventually just HAVE to
try a seperate transducer with this thing, see how much of my trouble is the built in USII

I bet you ain't no older than I am???? I'll be 47 Sept.
03-23-2009, 09:14 PM
UTFAN

Since the update my 200 doesn't work worth a crap on my trolling motor mounted transducer on the Matrix 97. Like you can't tell any difference in the transom mounted 997. The depth does not read correctly on the Matrix now either. Actually showing fish below the bottom of the lake. Think I may check into going to the previous version for the Matrix seems I was much happier with it before. I had been considering sending the unit in for repair looks like it may be the update.
03-24-2009, 07:14 AM
J White

Quote:

Originally Posted by Fisherman_Wantabe

I bet you ain't no older than I am???? I'll be 47 Sept.

Well Sir, you're beating me by a little -
but maybe it's the miles not the years? :D
03-24-2009, 07:27 AM
JusFshn

Quote:

Originally Posted by J White

Curious how anyone else is liking this feature - I've got a couple trips
in so far with the new update.

On my rear unit, 797/transom mount, I really like what it does with it off.

The 787/universal sonar II on the front, I like but...
if the tm is on at all, the 200 beam has so much interference
that I can't get rid of that it's useless. BUT I turned off all but the 83 beam,
and it works pretty good :confused:

Seems like before, the 83 beam was the main culprit with my interference
problems, but I just don't know. Anybody else running into the 200 freq
problem with the tvg off? A few more trips will tell, but I still think I like it
better up front with it off, even if it means I can't run the 200 freq.

The verdict is still out on the bow mount "TVG off" setting in my book.. I have been getting good results from my 1197 with transom mount.. My buddy's 967 bow mount has alot of trolling motor interference as well.. He is going to install one of those filter kits from Humminbird and see if that helps any.. You can run your noise filter on the unit up and it mayy help out.. Not sure what the filter does to the fish detection sensitvity?
03-24-2009, 07:34 AM
rockmike

The filters took care of my trolling motor interference. When I'm moving fast enough to get arches, I have a beautiful screen, but moving slow or sitting still I have a cluttered screen. I may need to play with my settings. I'm getting long in the tooth, and have a long learning curve for this stuff.
03-25-2009, 07:50 AM
Joby @ Humminbird

Any of you guys that are having interference issue please contact our customer service group.
03-25-2009, 11:33 AM
UTFAN

Joby, Can't really say I have an interference problem, but I have some kind of problem simialr to what Jwhite explained. It did start after I added the latest update. On vacation now, but I will conact customer service as directed when I get back.
03-25-2009, 12:27 PM
J White

Quote:

Originally Posted by Joby @ Humminbird

Any of you guys that are having interference issue please contact our customer service group.

Hey Joby, man - I appreciate the help, but you ain't talkin about for the
interference kit, are ya? I got all that, chokes on tm and power cables,
ferrite rings, etc. If it's something else tho, I'm game for calling.
Just would like to know what specifically to ask about.

Don't mean to always be griping, just trying to share info and learn from
others how to get the best out of these toys...

Anyway, I need to put some more time in on it, but what mine does is:
Anytime the 200 beam AND the tm are on, I get a screen painted SOLID with
blue/green. Not the little blue grass spikes I was fighting before.
Surface clutter, sensitivity, noise filters don't seem to have any effect on it.
But as soon as I cut back to the 83 beam, it goes away, and I get a pretty
decent picture. I'll work on it some more this wkend, I hope.
I swear I think a lot of this is that stinkin' built in transducer, but won't know
for sure till I try a different one.
03-25-2009, 02:30 PM
UTFAN

That plus seems like I am showing fish below the bottom of the lake. And depth reading has been screwed up since the last update. Also, last trip out the 997 mounted on the transom has been fine, but the water temp was reading -2 F. First time that has happened.
03-25-2009, 03:34 PM
DTG

UTFAN- I had to send my 787(front finder) back. We updated it with Version 4.48 which came from HB. Richard Williams looked at it and said it was fine but i know for sure there is not a spot on KY Lake that is 1267 ft deep. Our display is messed up and with tvg off it is solid red & blue from top to bottom. Our 997 was messing up until richard updated with his card. I will know the verdict tommorrow of it from Eddie Kenddrick. I will report on it. We had solid blue line across at 3 ft deep and would loose bottom quick or have light blue(weak) returns.
03-25-2009, 04:02 PM
J White

yeah, forgot to mention till I saw DTG's post - it does "flicker" and lose
bottom, this is 787 - front - us2 - tvg off - 83 beam only
not a biggie, it only flickers, never loses it completely, but it didn't do this
before.
03-25-2009, 07:56 PM
Fisherman_Wantabe

Quote:

Originally Posted by J White

Hey Joby, man - I appreciate the help, but you ain't talkin about for the
interference kit, are ya? I got all that, chokes on tm and power cables,
ferrite rings, etc. If it's something else tho, I'm game for calling.
Just would like to know what specifically to ask about.

Don't mean to always be griping, just trying to share info and learn from
others how to get the best out of these toys...

Anyway, I need to put some more time in on it, but what mine does is:
Anytime the 200 beam AND the tm are on, I get a screen painted SOLID with
blue/green. Not the little blue grass spikes I was fighting before.
Surface clutter, sensitivity, noise filters don't seem to have any effect on it.
But as soon as I cut back to the 83 beam, it goes away, and I get a pretty
decent picture. I'll work on it some more this wkend, I hope.
I swear I think a lot of this is that stinkin' built in transducer, but won't know
for sure till I try a different one.

I'm with you on the help from Jody. But my problem since I upgrade is noise from the big motor. Never had that before the upgrade?? Could it be everyone else is going Microsoft?? Just sent it out, we will fix the problems when they find them???
03-25-2009, 08:20 PM
DTG

I have talked to several folks that said it didnt affect the performance at all. Its strange its just isolated units. Another $43.00 shipping and I hope i am good again.
03-26-2009, 08:40 AM
Joby @ Humminbird

J White,

Email me some snapshot of what you are talking about. That will give me a better understanding of the issue. My email address is [email protected] .
03-26-2009, 09:19 AM
CrappieKidd

I am getting my 798c in the mail today. Let the leaning curve begin.
03-26-2009, 09:40 AM
Joby @ Humminbird

UT FAN,

I would like for you to send me a recording of the depth jumping around. If you have any question you can call me on my cell 334-695-3329.
03-26-2009, 11:02 AM
ted

tvg off created vertical lines on my 797 sonar. also caused unit to loose bottom when traveling with big motor sooner than tvg on. and when you go over cover it just shows a vertical peak.Kim @ hbird said try to increase noise filter.i did and it didnot clear the vertical lines. my opinion that increase in filter just defeats the purpose. aint happy with the tvg off feature. Ted
03-26-2009, 03:24 PM
DTG

Joby, Eddie is helping me with mine right now and he has been nothing but the best. My hats off to you guys.
03-26-2009, 04:26 PM
J White

Quote:

Originally Posted by Joby @ Humminbird

J White,

Email me some snapshot of what you are talking about. That will give me a better understanding of the issue. My email address is [email protected] .

Ok buddy, I'll sure do it. This wkend I'll take some shots and let you look
at 'em. Thanks, Jeff
04-01-2009, 05:29 AM
icemanrrc

UT Fan and Joby,
I had the same problem with depths going crazy on my 997. I was in 10 ft of water and it was suddenly show 50-60 ft. This started as soon as I installed the new update. I shared this on the yahoo side imaging website and found out that a few others had the same issue. It turns out that you need to "restore defaults" before applying the new updates. The restoring defaults is the key. All of us that experienced the crazy depth issue didn't restore defaults before applying the new software patch. UT try this. Go into the menu (I can't remember which one) where you can restore defaults and restore. Then, reinstall the software. That should fix it. If it doesn't, you may need to go through the process again and reinstall the previous software first and reinstall the newest software.
04-01-2009, 03:50 PM
CrappieKidd

Your right Ice about defaults. Says so right on their site if you dont problems might happen.
04-01-2009, 07:13 PM
jaxsprat

Crappiekidd

Quote:

Your right Ice about defaults. Says so right on their site if you dont problems might happen.
__________________

You are right-- BUT it was added a few days? after update came out so a lot of people were not aware of it, so one can't blame them, just one of those things I guess.................................
04-01-2009, 08:16 PM
UTFAN

I'll try it thanks