Gold Detecting and Prospecting Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.

SD2100 Threshold

Go down

SD2100 Threshold Empty SD2100 Threshold

Post  stuartscott171 on Sat Jan 16, 2010 9:44 am

I have just recently aquired a SD2100v1 when trying to setup the detector I am having trouble with the threshold control, when I turn this knob it does not seem to adjust the level of the background hum and is really loud and can not turn down.

Is this a problem with the detector or more learner user error SD2100 Threshold Confused

stuartscott171
New Poster
New Poster

Number of posts : 8
Age : 38
Registration date : 2010-01-16

Back to top Go down

SD2100 Threshold Empty Re: SD2100 Threshold

Post  Guest on Tue Jan 19, 2010 3:08 pm

Sounds like there seems to be a problem, If I were you I would get it checked out by Minelab.
The Threshold when adjusted should reduce and increase in sound.
Perhaps try another coil and or battery narrow what maybe a problem ( I am assuming that you are trying it away from built up areas with all the EMI around towns and cities.

Guest
Guest


Back to top Go down

SD2100 Threshold Empty Re: SD2100 Threshold

Post  stuartscott171 on Tue Jan 19, 2010 10:18 pm

thanks for the response, i am trying it away from town, I will try another coil and see how i go. If not will send of to minelab for further investigation

stuartscott171
New Poster
New Poster

Number of posts : 8
Age : 38
Registration date : 2010-01-16

Back to top Go down

SD2100 Threshold Empty Re: SD2100 Threshold

Post  Nightjar on Mon Feb 22, 2010 9:56 pm

Stuart,
Maybe your machine is in "overload" if you are testing it in suburbia. Get out of town and see how you go.
Nightjar
Nightjar
Contributor Plus
Contributor Plus

Number of posts : 2589
Registration date : 2008-10-25

https://l.instagram.com/?u=https%3A%2F%2Fwww.ebay.com%2Fusr%2Fka

Back to top Go down

SD2100 Threshold Empty Re: SD2100 Threshold

Post  deutran on Mon Feb 22, 2010 10:30 pm

Stuart I just checked the schematic,its possible there is a bad/broken connection or solder joint to the pot(threshold control)as there is a +5v on one side and a -5v 0n the other,this allows a ref voltage to the ic's and would cause the problem so mentioned,it may pay to have a quick look behind the panel.I'm guessing the threshold gets a bit of use and may even have taken a knock at some point.You could verify with a meter if your handy.There is also a 3.3m resistor from the centre of the pot that may have gone high.
deutran
deutran
Contributor Plus
Contributor Plus

Number of posts : 1723
Age : 56
Registration date : 2009-09-26

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum