Findmall.com
 
 






Minelab CTX 3030 Detecting Forum


Welcome! Log In Register
Power Cycling stops EMI....WHY?
Posted by: IDXMonster
Date: August 24, 2017 05:58PM
2 different sites. Manual sensitivity 20. All same settings. Checked NC channel and it is 2. Very erratic chattering with machine sitting still,coil on ground. I run through all the NC channels manually one by one to see if any single one is better. They're all the same or very similar. I let the machine NC. It chooses 2. I power cycle the machine with the coil stationary on the ground. When it comes back on it is still on channel 2 and EMI is completely gone. WHY??

Re: Power Cycling stops EMI....WHY?
Posted by: tiftaaft
Date: August 24, 2017 06:04PM
Great question! I had that happen at a site recently as well... powered up and noise canceled at site and the CTX sounded like a flock of geese in the headphones. Even lowered sens and tried auto +0. nothing helped until I power cycled and let it pick the channel (not sure if it picked the same) but when it finished the threshold was purring like a kitten... found a merc about 10 minutes later, but that is another story... Anyway, I wondered the same thing as IDXMonster.

Re: Power Cycling stops EMI....WHY?
Posted by: unearth
Date: August 25, 2017 03:15AM
Please excuse my ignorance...what is a power cycle?

Re: Power Cycling stops EMI....WHY?
Posted by: IDXMonster
Date: August 25, 2017 04:59AM
Quote
unearth
Please excuse my ignorance...what is a power cycle?

You are far from ignorant Unearth...it's just turning the machine off and then back on again.

avatar
Re: Power Cycling stops EMI....WHY?
Posted by: dewcon4414
Date: August 25, 2017 05:39AM
Likely because it is GBs as well.

Dew



Xcal II, Blue Xcal 1000, Sov GT, Exp SE
Whatever you do in life, surround yourself with smart people who'll argue with you.... John Wooden.

Re: Power Cycling stops EMI....WHY?
Posted by: IDXMonster
Date: August 25, 2017 07:48AM
Quote
dewcon4414
Likely because it is GBs as well.

Dew

Dew...you're thinking the ground is bad enough to cause constant falsing when the coil is stationary? It's reading 16 suggested...and I have trashy park type disc pattern.

avatar
Re: Power Cycling stops EMI....WHY?
Posted by: dewcon4414
Date: August 26, 2017 05:17AM
A lot of things take place when the machine is turned on. It will ignore targets under the coil as well as magnetic interference which affect depth. I didnt see the part where you were in a park. Parks are also notorious for high voltage underground wiring. Cycling sometimes will help.



Xcal II, Blue Xcal 1000, Sov GT, Exp SE
Whatever you do in life, surround yourself with smart people who'll argue with you.... John Wooden.

Re: Power Cycling stops EMI....WHY?
Posted by: IDXMonster
Date: August 27, 2017 07:25AM
Quote
dewcon4414
A lot of things take place when the machine is turned on. It will ignore targets under the coil as well as magnetic interference which affect depth. I didnt see the part where you were in a park. Parks are also notorious for high voltage underground wiring. Cycling sometimes will help.

In the cases where this has helped I have been in a baseball that has lighting every time. The underground wiring may be my problem Dew. It is interesting how this machine works,I would not have thought that simply by turning it off and then back on that the problem would be gone. But it is...thanks for the insight!

avatar
Re: Power Cycling stops EMI....WHY?
Posted by: dewcon4414
Date: August 28, 2017 05:13AM
I used to hunt a lot of parks so ran into the underwire issue a lot. It could be that running running less modulation does it as well. Maybe the machine compensates and ignores more mineral and EMI....... which can affect the response to the phones. Kind of like having targets under your coil. Then the question is........ how much is that affecting what targets we hit and how deep?



Xcal II, Blue Xcal 1000, Sov GT, Exp SE
Whatever you do in life, surround yourself with smart people who'll argue with you.... John Wooden.

Sorry, only registered users may post in this forum.

Click here to login