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The only problem I have now is the humminbird 597 DI on back of boat have a bad picture. Not clear unless I stop the terrova. What is it I need to do. Right now I have the FF powered to an accessory switch on the panel. I'm not sure what battery it's going to yet.
I have two trolling batt and one start battery. Any help would be great.
So far I'm loving the terrova
I would install one of those choke cables from humminbird and wire direct to the start battery (via fuse of course). Best shot.
I would wire direct and be sure wires are not touching trolling motor wires.
Also try with trolling motor down without other fishfinder on. Could be interference from other transducer.
Thanks I'll have time to play with it tomorrow. I'll update
I did cut trolling motor off and coast, then it cleared up. I don't have a fish finder hooked up yet on the TMQuote:
Originally Posted by crappielimits
i had one that i had to hook to cranking battery .TM would interfear with HB . didn`t alwayes just started one day .
best of luck, it can be trickey to fix, that terrova/humminbird combo, take your time and don't forget to look for the easy fix, it's not always the mystery if seems to be.
For testing the ff? Without putting the boat on the water to se if it cleared up. What is my option. I haven't played with it yet so what's my best option.
If it is interference caused by the trolling motor running, it will do it whether in the water or not. Just let the motor down and turn on the unit. I would try it on the water after rewiring to be sure, but fishfinder she be wired directly to the cranking battery with a fuse. Be careful of transducer wire touching trolling motor power wires.
Your best option would be to contact the Humminbird Customer resource folks and see what they recommend. They are kept up to date on any new fixes that our Engineers come up with.
Sound good but I think I have found the problem. I hooked direct to start batt the unhook the onboard charger. I turn clear again then I try hooking it up again , so I connect cable to onboard charger it messed up again. I'm headed to lake to test. I'll update and don't understand Why this happen
RF noise from an "onboard charger"....??Quote:
Originally Posted by Hunterjt
Hmmm... Interesting...
Rickie
Ok I'm back at it again....got on the water still same thing I did notice when tm speed was at full it was clear I'm getting frustratedQuote:
Originally Posted by rnvinc
Thanks GregQuote:
Originally Posted by Humminbird_Greg
Is your boat metal by chance?
Fiberglass...Quote:
Originally Posted by lcookie
. I'm going back to the lake tomorrow to fish a little. I purchase a couple choke core to place on it hopefully that take care of it. I'll update
I placed the ferrite core on the lines with no help. I still have the problem as before, Im waiting on cable from HB now I really hope this help my problem. I even took the battery meter wire off to see if that was it then I unhook the us2 to see if thats it and I'm still trying. Has anyone used the cable from HB? I even took the finder and hooked it to a battery off the boat still no fix. He is a pic of what I'm getting. Thanks for all your help.
Attachment 75659
Check The fuse in the Terrova Head, If it is blown there will be Interference, was in mine ,
This is because the PWM control circuit is turned on full dc out and is not pulsing the motor. This (full speed) is a good test for those that have PWM noise issues.Quote:
Originally Posted by Hunterjt
How do you solve PWN noise issues and what exactly is that? My terrova causes interference on my 1198 also.. but does not cause it at full speed so I guess I have PWN noise issues.
DoubleG
Hunterjt,Quote:
Originally Posted by Hunterjt
I did not know that you had the US2 on your Terrova. We have seen where two things with the US2 can cause trolling motor interference – and this is whether you are using the US2 or not:
1.) Check the fuse in the head of the trolling motor with an ohm meter (multimeter) to make sure that it is not blown. Don’t just look at it – test it to be sure.
2.) Make sure that all of the little round metal connectors for the US2 cable are tight. If they are loose they can also cause trolling motor interference – again: even if you are not using the US2. If you are using the US2 than be sure and check the metal connector that is on the Minn Kota to Humminbird adapter cable to make sure that it is tight as well.
There are some instructions and pictures here on the Humminbird web site about this:
Humminbird: America
In most cases, you can only mask the problem. Pulse width modulation is basically pulsing the motor at different durations of dc. The duration of the dc pulse determines an average dc level, which in turn determines the speed. On low speeds, the motor is pulsed slower which ends up with an lower average dc level and makes the motor turn slower. Kinda like a light dimmer effect (but not a light dimmer).Quote:
Originally Posted by DoubleGobble00
DoubleG,Quote:
Originally Posted by DoubleGobble00
PWM = Pulse Width Modulation. Basically instead of turning up or down the voltage to your trolling motor for those speeds between stopped and wide open; they pulse the 12 volts (or 24, 36,…) to the trolling motor at various speeds. If you select a slow speed this puling is slower and at a higher speed setting the pulsing is faster. This pulsing of energy causes a radio frequency and when the frequency of the pulsing matches that of the sonar; you get interference. At the highest speed the PWM circuitry is not operating so there is no interference.
You should contact the Humminbird Customer Resource folks and see if you need the trolling motor choke or any of the choke cables that we have.
No fuse blown in the head.thanksQuote:
Originally Posted by HARLEYBOY
Check those connectors...
Quote:
Originally Posted by Humminbird_Greg
Glad to see we are on the same page. You not one of my former students incognito are you? ha
Not unless you taught electronics in Birmingham Alabama CP.
Thanks Greg I just took a visual look at the fuse. I'll try the meter when I'm home, this stuff is trickyQuote:
Originally Posted by Humminbird_Greg
Are you using US2? My boat has a 24v Maxxum Pro, it also had a HB 747C that was hooked to the US2. Interference was terrible, I tried all the ground tricks, checked for the fuse, my Maxxum doesn't have one btw. Called HB to try to get a choke kit, they wouldn't send me one. The lady I spoke to said they were for larger units bash. Finally I bought a traditional transducer and mounted it on the TM, all my interference went away. When I updated to a HDS I purchased the cable for the US2, it had the same issues as the HB. I installed the transducer that came with my HDS on the TM and my interference issue went away again.
I'm not going to say my issues could not be fixed some other way, but I got tired of banghead. Good luck.
Thanks CP and Greg... I appreciate it. I learned something new everyday it seems....
The interference I have is really not that bad. I just notice it when single poling from location to location. When I am scanning to find fish I am either on full speed with Tm or using the outboard motor. I actually have a choke that HB sent me a while back but I have not installed it. The wires on the choke look to be 10 gauge. The power wires I ran for the Terrova are 6 gauge and the wires on the terrova look like 8. It would be real hard to get that 6 gauge wire in those small 10 gauge slices and seems like it would further increase my resistance to my TM. I try to keep my battery life as high as possible since I troll often on high speeds. It also looks pretty ganky to be quite honest. I can live with the interference I got but will call HB sometime to see if anything else might work.
DoubleG
Here is the basic MK pwm and wiring setup the I measured with my meter.
If you are not using the US2, I would suggest storing it away from all equipment. It is a big RF transmitting antenna when not used.
http://i188.photobucket.com/albums/z...2grounding.jpg
Dont give up.it will work.i have a 597hd/di also.it does mot do that.
this is strange looking picture.i have different trolling motor than you. but still i may be able to help.i need more info please. is your transducer mounted on the bottom of your trolling motor?.if so were do you have the transducer cable mounted ? if you remove your transducer will the noise go away? if so how far do you have to move it for the noise to stop? when you move your trolling motor to the highest setting does the noise stop completely or somewhat or no change ? have you installed any ground wires and if so were ?have you installed any chokes and if so were are they installed and how did they affect the noise that you have ? sorry for all the questions i dont remember if i read here what you have tried. one more thing have you tried going to the screen that shows the voltage and check to see if voltage drops when this happens?Quote:
Originally Posted by Hunterjt
sorry i just read above picture that you have chokes installed. but were are they installed.the cable that you are talking about that humminbird is sending may be the power cable with inline choke. this is a good ideal to install. if when trolling motor at full speed and no noise then this cable alone will not completely stop the noise.
It has been asked but never answered. Is there a way to disable the maximizers in these motors?
I opened it up an pulled the plug....didn't helpQuote:
Originally Posted by lcookie
I have not went in setting to check all you asked about voltage. I the chokes have been place on power wire close to ff as possible. Also place a choke power wire on battery, also place on power wire close to power wire close as I could to we're wires come out of TM. I'm still waiting on the wire. I have powered unit up from a battery off boat still no help. I don't have anything hooked to the us2 yet. I only have dash ff hook up transducer om transomQuote:
Originally Posted by kosmo
Not practical to do this.Quote:
Originally Posted by lcookie