Surface Blanking and the QXT :thumbup:

[Mike Hillis]

It appears that the Noise Cancel threshold limit for signal strength is always in use for target discrimination (target id). It is the limit at which the audio and visual discrimination (target id) will work.

Now enter Noise Cancel.

With Noise Cancel ON, only signals that reach that preset level will respond. Audio and visual discrimination (target id) is robust. Only problem with this is that only mediocre depth can be obtained.

With Noise Cancel OFF, that same signal threshold limit is still present for audio and visual discrimination (target id). Audio and visual discrimination (target id) still only apply to target signals that exceed that threshold limit. However, target signals that do not reach that threshold required for discrimination (target id) are still reported in a threshold based audio tone and signal intensity graph.

So

 

[R-n-R Magnolia SpringsAla]

Should be interesting w/ the smaller coil. Still wonder about target masking if the response(recovery) is slow? Not familiar with that model but on the "old" XLT you could speed it up. Cool idea though, hope it works!!

 

[thompy]

keep it comming Mike, any tips are helpful, i really enjoyed my qxts, going to get another when time permits

 

[Mike Hillis]

Hi RnR,

The QXT doesn't let you adjust the recovery speed like a XLT or DFX. One thing to remember is that the QXT has a very slow sweep requirement. With the setup I described above, the audio you are listening to is a threshold based audio response so SAT settings will have a greater affect. In addition to that, the intensity graph itself can easily indicate multiple targets. Especially in the ground where the signal is shaped by the ground minerals. Put the right coil on for the trash content and unwanted masking can be dealt with as good as it is possible for the QXT.

HH

Mike

 

[Mike Hillis]

Hi Thompy,

I find the QXT to be somewhat like the CoinStrike in that both machines are different than the typical units being produced and so have to be approached from a different perspective.

For me the hardest part of the QXT to come to grips with is the slow sweep speed. Using it at the wrong site can be fustrating but when matched up to the sites where this kind of slow is good works very well. The surface blanking feature is just one more piece of the puzzle that makes up the QXT.

HH

Mike