Noise Cancelling "We're Doing It Wrong"

[Boony]

Hi Folks,

Diggerbeginner posted this on the continuous signal thread and a couple of us thought it might deserve it's own thread.....Boony

Re: Explorer II Continuous Signals
Posted by: DIGGERBEGINNER <Send a PM> (24.192.121.---)
Posts: 1
Date: February 08, 2006 11:08PM


Talked to Mine Lab they said we are all Noise cancelling wrong! It was a mistake made by the author of the manual and never changed. Holding it on the ground in a clear space is for ground balancing on other machines not the purpose for a new revolutionized Explorer...the author just did not take into account..... Noise cancelling is for the electrical waves in the air not ground balancing! This machine automatically ground balances....To Noise cancel correctly hold the detector waist high...parallel to the ground and cancel. You can move around but keep it parallel to the ground. Makes a big difference! Another point is when using the probe before pin pointing try holding the probe up in the air then hit noise cancel....your pin pointing will amaze you, but you will have to Noise cancel again when switching back to the coil. Also remember to Noise cancel each time you make a program change or move closer or farther away from power lines. John Harvey (DiggerBeginner)

 

[Big Boys Hobbies]

coil parallel to the ground or the shaft?

 

[Boony]

Hi Stoopstroop,

I Don't know! ask DIGGERBEGINNER, I would imaging shaft parallel to the ground, that's what I did this morning and it seems to work fine.

Boony

 

[Chris(SoCenWI)]

Thanks for the Post Boony,

I missed that one. And it makes sense. I've tried canceling both on the ground and off and it doesn't seem to make a huge difference if you are in a noisy area.

But, as we've discussed on these forums before: Too many people take the user manual and Andy's book as gospel. They are both done well but were done when the machine was very new. I build customized industrial machines and can guarentee that many of the manuals we do are just plain wrong in places and more often after years of people using the machine they find out better methods than what was presented in the manual.

 

[Boony]

Hi again Folks

Just to check this out myself, I email Minelab and this is the answer I received:-
Hi Wayne,

There is no problem with having the coil on the ground as it will also take the ground signal into affect.

Actually I recommend that you do have the coil on the ground as the detector will select a better frequency for the
interference, as well as the type of soil in a given area.

Putting the coil on the ground also helps to keep it still, which is perhaps the most important thing to a successful NC.

Hope this helps.


CUSTOMER & TECHNICAL
SUPPORT OFFICER

Consequently I'm at a loss as to what to suggest, suck it and see I guess......Boony

 

[Travis]

Good work Boony, I was contemplating the same Email.
I must say though, it makes since to cancel on or near the ground (coil same plane as dirt) because that is the position the machine will be operated from.
HH
Travis