50khz noise on fcv295
- Thread starter WAFisherman
- Start date
S
Snips
Guest
WAFisherman,
Couple of questions.
Do you have an alternator on that engine?
Where is the shield wire grounded to for the low frequency?
Also I see you are using the Interference Filter in the AUTO mode, have you tried setting it to medium?
Snips
Couple of questions.
Do you have an alternator on that engine?
Where is the shield wire grounded to for the low frequency?
Also I see you are using the Interference Filter in the AUTO mode, have you tried setting it to medium?
Snips
WAFisherman
New member
Hi Snips,
The motor is the brand new Suxuki DF250 APX outboard (digital throttle). It has the magneto. I tried all 3 settings, low med and high, high was marginally better. The transducer has the 9 pin black plugs on the end, so I have an adaptor plug with bare wires connected to the 295. The ground wire is clamped to the chassis
Cheers
The motor is the brand new Suxuki DF250 APX outboard (digital throttle). It has the magneto. I tried all 3 settings, low med and high, high was marginally better. The transducer has the 9 pin black plugs on the end, so I have an adaptor plug with bare wires connected to the 295. The ground wire is clamped to the chassis
Cheers
WAFisherman
New member
What would happen if +ve and -ve ( terminals 1 and 3 were swapped)?
S
Snips
Guest
WAFisherman,
Normally the Blue (or Blue with white stripe) will go to terminal 1. You can try swapping the wires but I don't think it will help. This type of interference is more prone the appear on the LF side then the HF. However if you go to a deeper depth range (600ft+) and set the HF gain to 10 you might see the same pattern start to appear on the HF side. At this stage either adding or removing the grounding wires may help.
Snips
Normally the Blue (or Blue with white stripe) will go to terminal 1. You can try swapping the wires but I don't think it will help. This type of interference is more prone the appear on the LF side then the HF. However if you go to a deeper depth range (600ft+) and set the HF gain to 10 you might see the same pattern start to appear on the HF side. At this stage either adding or removing the grounding wires may help.
Snips
WAFisherman
New member
S
Snips
Guest
WAFisherman,
Thanks for giving that to my attention, I will have that corrected.
Snips
Thanks for giving that to my attention, I will have that corrected.
Snips
WAFisherman
New member
No probs. Will try a few of your suggestions and test again in about 2 weeks once this crappy weather clears
Thanks again
Thanks again
WAFisherman
New member
Electrical Interference issue solved.....well sort of. I connected the 295 to an independent battery and 50khz reads crystal clear at speed ie 30knts (in 20m)!
I think I will try now to connect a noise conditioner to a wire feed from the main battery and see what happens.
I think I will try now to connect a noise conditioner to a wire feed from the main battery and see what happens.
S
Snips
Guest
WAFisherman,
That's good news, thanks for the update.
Snips
That's good news, thanks for the update.
Snips
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