GB Versus Sensitivity

[cabbie]

First time out with my Deus today and not sure if things are right.

If I ground balance either by pumping or manually the detector chatters so much afterwards it nigh on impossible to decipher the sounds unless I lower the sensitivity to around 45

I'm using the default GM Power mode with no changes. GB on my field comes in at 74

If I just use the default 90 GB setting then it runs as smooth as silk and can run at 95 sensitivity.

So am I better running default GB settings and high sensitivity or spot on exact GB settings but lose half the sensitivity ?

[sweepstick47]

I not a Deus user cabbie but the same should apply for any machine. I believe the right choice is the one that produces the best possible operating characteristics whilst under the same ground/environmental conditions. Good Luck Regards ss47

[Oxgirl36]

I'm certainly no expert but can't you just switch it to tracking?

[cabbie]

Putting it into auto tracking has the same effect with it becoming unstable.

I've had 100's of detectors over the last 40 years but never come across a situation where proper ground balance makes the machine so 'hot' or unstable. Both me and my detecting partner who was using a XP Goldmax were left scratching our heads and both checked the ground to make sure there was no targets under the coil first. The sound with the GB set was like a machine gun firing on every sweep.

I only ask as in the official XP Videos on youtube on numerous occasions the detectorist is said that he leaves the GB setting on 90 as that is suitable for most of the UK soil.

It kind of defeats the reason for having adjustable GB settings.

Still leaves me wondering if high sensitivity and GB set on 90 is penetrating the ground further than GB set on 74 and sensitivity set at 45. Something air testing wont tell you

[Hauptmann aD]

It all depends from the mineralization of the ground you are on.
I currently step down from the default value (which may be 90 for you or different in a custom program, and after finding the annoyance line, I step up one or two digits again.)

Btw: You follow the rule to power on and wait until initialization is finished with the coil at least a half meter away from ground and metal?

Best greetings from Germany
Olaf

[john Colin]

I think the GB setting is very forgiving on the Deus, Gary recommends keeping it at 90 on almost all occasions and conditions. Personally i use tracking, I seem to remember reading that as long as the GB is no more than 5 above the reading it will work perfectly and even if it's more than 5 above the difference is minuscule.

[liamnolan]

The Deus really is a "switch on and go" machine. Use the factory settings for now, don't experiment until you know the machine. Tracking is a good choice, its all explained in the handbook so do read that slowly so you understand things. I use GMP program myself but lots to choose from. The factory sensitivity settings are fine, DON'T tweak the settings for now. Set up a little test bed of various coins and other bits so that you know the sounds and off you go.
Lots of good advice on the Deus on here, so put the kettle on and read through whats been already discussed, it will save you loads of time. Many newcomers do not bother to check the Deus topics and start asking all sorts of questions and that's fine but do check the topics as some are really excellent. I have had the Deus for a fair few years now, still on the 9ins coil but its simply the best machine out there in my humble opinion. However easy it is to use, its still a complex bit of electronics that deserves to be used correctly and then it will perform at its best. Cheers, Liam

[lord lovell]

keep it simple program 3 GB at 90 sensitivity between 86-95 and two tones and away you go

[cabbie]

I do have a test bed in the Garden and in both cases the test pieces get picked up easily.
I am felling it a lot easier on the ears just to leave the ground balance fixed and the sensitivity higher.
I do wait the few seconds away from the ground and metal objects when switching on.
I did look through the forum to see anything similar but no topics seemed to fit the problem I had.
Every other machine I've had has done the opposite and calmed the machine down and stopped any falsifying with corrected GB setting.
I will try the tracking next time out though and see how it goes

[f8met]

It needs to be more than a few seconds when switching on. When you do switch on you will notice the coil flashes about 20 times quickly and then slow flashes. That is when you can start detecting. I usually hold it up and it is enough time to pray to the hammy gods for a good day detecting before you start

[liamnolan]

I hope you meant the sensitivity kept DOWN and not up?
Lots of users think that the higher the sensitivity the deeper the detection but its like turning up the volume on a radio that is out of tune, more noise but no improvement on the sound. If there is too much high chatter then the brain will not be able to pick out those good signals, Liam
This is very relevant - http://www.metaldetectingforum.co.uk/vi ... 39&t=51520" onclick="window.open(this.href);return false;

[pasttarg]

Saw this elsewhere so osted it here

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[pasttarg]

Sorry, links to other detecting forums are not allowed, Liam The Enforcer ...