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What is the Signagraph about?

M

Mick in Dubbo

New member
I've looked up the manual for the XLT and checked out White's home page about this feature, but can't find anything useful about it. It seems to be the same as the confidence meter on the MXT. Have I missed something?
Mick Evans.
 
It can help weed out gold instead of pulltabs. After you use it awile you'll see that pulltabs,nickles and coins have a certin patterns on the graph.... and a VDI # When you get about the same or the same VDI# and the graph is diffrent DIG!!!!!!! I wish I could have made the whole screen the signograph! I dug more jewlery with my XLT than anyother machine in dirt cause of it. The only reason I don't have one now is I've got a Sov XS DTI 3 combo that is dead on with the vdi and small coil I use it just for coins in cleaner areas. But I still think about the XLT and kinda wish I still had one, It's the ultimate adjustable detector I ever used!
 
I have hit a few gold targets with my DFX that the signagraph was totally different that a pull tab, nickle or foil. If I can recall, there were 2 soild bars righ tnext to each other, with the height of the bars about 1/8 of the way up the screen, on those gold objects. The foil spreads the signagraph, although the VDI can be the same as a gold target, while the pull tabs and nickles have higher bars.

To me, it's an indispensable tool when hunting in trashy areas or where there is lots of foil/aluminum. I have a dry sand program on my DFX that uses the 15kHz frequency along with the 5.3 inch coil that is deadly on small gold. I have found earrings and small gold pendants in the dry sand with this program that were clearly different signagraph patterns than the foil and aluminum garbage.

Also, when testing other machines on these small targets, only my X5 and Tejon hit them with any depth..which was about 3 inches anyway due to how small the targets were.
 
you can jack up the response time as well for really trashy spots, If it was only a dual freq XLT. Ya know the more I think about it the more I'd like one again. Hell I've only got 8 detectors now,lol.
 
Thanks for the info. It sounds like it's going to take a while to figure out.
Is there an optimum setting the get consistent readings out of the Signagraph. ie Graph averaging on or off, fade rate setting, accumulate on or off, recovery speed, and VDI sensitivity, Ive been playing around with most of these settings, trying to get consistent behavior on coins and pull tabs eta, but haven't come across a setting that the signagraph has been able to help?
I have played around with the DC sensitivity to help out IDing targets in pinpoint. I seem to have a bit more success with that.
Thanks.
Mick Evans.
 
n/t
 
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