What do the negative numbers mean when you pinpoint

[Dan(NM)]

I noticed that when I pinpoint, I get a negative number reading. I haven't been able to link it to anything yet. Matbe I'm overlooking a valuable tool here. Thanks.

 

[BarnacleBill]

If it's an X70, the X70 will ID in pinpoint. But to get a correct ID the coil needs to be in motion as the machine is a motion disc type. Center up on the target in pinpoint, and then do a short left and right swing to the edge of the coil.

Now there has been some discussion in the past on how much movement is needed, and well, I know I'm right.

Others have posed that a "full" swing is needed to get accurate ID. That would be nice if the circumstances allowed, but much of the time I'm working in iron with close adjacent evil signals. Therefore I try to keep my sweeps as short as possible, which usually means just to the inside lip of the outer receive ring on a concentric. I also speed up the swing and do repeated short swings to give the machine as much look time as possible without straying over adjacent junk.

If an X30 or X50 it simply retains the last ID before pinpoint was engaged.

[attachment 51421 pinpoint1.gif]

HH
BarnacleBill

 

[Digger]

The X-70 updates the TID while in the pinpoint mode. My guess is that the targets you were pinpointing were ferrous. HH Randy

 

[utmike]

n/t

 

[Dan(NM)]

I'll be more mindful when I'm pinpointing non-iron targets to see if it reads positive as well. For some reason I only noticed the negative readouts, thanks for the heads-up.

 

[Dan(NM)]

With a trigger pinpoint function like a Whites or Garrett, you could detune the signal over the target and isolate it easier. It seems the X-70 does that for you by passing the coil over the target several times, the signal shrinks and narrows the pinpointing to the center of the coil very accurately