TrpnBils said:
The picture below illustrates where I'm at with target trace. I know it's a powerful tool, but i can't seem to prove that to myself. When I get something that looks like the screenshots on that Minelab article that was linked a few replies back, it almost always ends up just being garbage (mixed with other garbage). There's something I'm missing, and I know that...especially at depth (even in a test garden where I know there is something) a lot of times I can't even get a mark on my screen even though it gives me audio. Thoughts?
Target trace is tied to the audio when the display paints a picture but it is a separate circuit from audio to prove it's separate reject your whole screen target trace still works . But when ran with audio the #s and trace work the same as in one .
Target trace and audio are both affected by sensitivity the higher the sensitivity the better the trace will be displayed the less sensitivity the weaker the trace in my soil running at 23 for sense just gives me a trace at 7 I/2 inches maxed at 30 for sensitivity I can get 9 inches if you want more depth on target trace you have to look at the screen carefully the area that is a light shade compared to the rest of the screen is where your trace is happening it's very light blue gray in this area a good trace will be red .
So if your in your coin garden running sense at 23 you will not paint a trace on your screen on a 8 inch coin .You may have a light blue or gray trace in that area if you look close to get a better trace you have to crank the sense up .
(Now sensitivity will control the trace in pinpoint) also but pinpoint remains at max depth regardless of sensitivity #s So if you go to pinpoint sizing with trace you can only build a trace as deep as your sense is set at . When in pinpoint sizing you can run your sensitivity much higher than disc mode which is a motion mode and pinpoint sizing is not a motion mode there by making it less prone to falsing and other noises . Pinpoint sizing is not a pure all metal mode it still using a form of disc ground minerals and such but in reality it's quite close .
I like to engage pinpoint sizing off the ground if you engage it over the target it tunes to that ground and if you engage it on the ground by the target it will tune to that ground where I'm at I would be tuning it to another nail or something .Remember as you wiggle over the target if you push the pinpoint button again it well detune the coil making it harder to see the trace but if you know what the trace is you can detune it farther and farther to get the exact spot where the good audio is coming from .
When in pinpoint sizing you still have to move the coil to get trace to be displayed the smaller the wiggle the more accurate the id . Sizing also lets you know the shape of the target size and length of target which will let you decide if you want to proceed to check the target out more.
When doing nail test such as _0_ line means nail 0 means coin if done on top of ground in combine open screen you will get low low low if you bury it say 4inches you will get low high low so bury the nails and coins when testing I have a vid showing these but it is only out of dirt in dirt different story can't edit it but be aware of this.
Now my first screen is open except that the 31 to 35 line is disc out second screen open when I check targets I go back to first screen iron is always present in the lower right corner in my soil but with that disc out portion 31 to35 I get some more imfo if I get a rejected diamond it tells me that the iron is a nail or similar size no audio no grunt or high mixed in now bigger iron will be rejected with a diamond to but well high tone and chop very unstable #s and make weird sounds .
Going back to the _0_ if you pass your detector over this with 31 to 35 line disc out you will only hear the high between the nails so that disc will clear a lot of signals that are masked with small iron .On this type of masking and others these are sweep speed sensitive to fast and you will not hear it these high tones you hear between the nails will be short almost a chop but very noticeable dig me signal . I think everybody should do this test to see what swing speed you should deploy .
That depth gauge will give you some more imfo on digging or not if a nail or small piece of iron is with a coin the depth gauge will be more stable say 3 to 4 or 6 to 7 where as a plain nail will read 3 to 6 or 6 to 10 a coin being with the nail or small iron will be much more stable say 3 to 5 or 6 to 8 not quite perfect but gives you a idea that it's not long one way like the nail by itself .
I hope this helps you . sube
HH Randy