Iron Bias Demonstration - Equinox 800
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- เผยแพร่เมื่อ 3 ต.ค. 2024
- Short Iron Bias Demonstration on the Equinox 800 to show how the feature is intended to provide the user a way to influence how the machine responds to mixed-signal targets that might cause a “falsing” ferrous item to indicate in the non-ferrous range, without changing how the machine responds to solid, non-ferrous targets.
Best demo and explanation I've seen for Iron Bias on the Nox, it's always confused me but now I get it...thanks :)
Ditto for me! Thanks!
We need a can slaw bias setting.
Great explanation btw.
Very good demo 👍
Thanks oldplucker!
Excellent video. Thank you.
Thanks, LibbyD! And thank you for watching!
Thank you, very informative
Thanks Peter!
Good review!!!! On the contrary, I go more for finds made of iron, small iron. Arrowheads and spears, steel, axes, knives, etc. I noticed a different signal, in the ground when it throws in color, when I dug out the tip, it starts to throw in the minus and already without sound. But in principle, I dig almost all the signals, because anything can get caught !!! I go mainly through the forests, as we say, where wolves are afraid to shit))) Greetings from Kharkov!!! Ukraine!!!!
This helped a lot. Thx.
Excellent video....... Thank you
Thanks Rocenante - I appreciate you watching!
O.k I understand now what that does. Thanks!
Thanks for watching, telcomscott
Any ideas about shredded metal deck ? How to avoid that with the iron bias ? I’m metal detecting in Mexico now and many old haciendas ! Has that metal deck and nails everywhere ! Last one I found a 1881 coin but I had a hard time
What do you mean it's not intended to be a un masker? Thanks
A common misconception is that iron bias is an "unmasker", and you can even find videos claiming to "prove" it, but that's not what iron bias is designed to do. I consider true unmasking to be a situation where a detector can be set up to see two individual targets when it would otherwise see only one co-mingled target. Unmasking is a job for higher recovery speeds, slower sweep speed, smaller coils, etc - not iron bias. Iron bias does not provide separation between two individual targets - instead, it's intended to sniff out single targets that would otherwise fool the detector through falsing.
If a ferrous and non-ferrous target are too close together and/or recovery speed is too low, a target is more likely to get missed or ignored because the machine only sees one target instead of two. Iron bias can exacerbate this effect, of course - if iron bias is set too high, and the machine sees the two targets as one co-mingled target signal, a high iron bias set by the user will mark the signal as ferrous, and you’ll never hear a high tone.
The misconception of iron bias being an unmasker comes from the opposite situation - if you set the iron bias low, the machine still sees the two close targets as one co-mingled target signal, but now the signal gets marked as non-ferrous and you hear a high tone. Folks who don't really understand what is happening will say "Ah ha! Iron bias unmasked a good target!", as if the machine magically ignored the ferrous target and saw only the non-ferrous. But in reality, the machine just did what it was told by the user and classified an "iffy" co-mingled signal as non-ferrous. The difference is subtle, but extremely important - changes in iron bias will never allow the machine to separate two closely spaced targets, it only changes how the machine interprets a given target signal.
Here's a scenario to illustrate what I'm trying to say using made-up numbers: Let's say we have a dense piece of iron close to a silver dime. With low recovery speed and high iron bias, the machine probably only "sees" one target and might assign it a -2 TID/iron tone (high iron bias = call "iffy" signals ferrous). No dig - unless you like iron. With low recovery speed and low iron bias, the machine still only sees one target, but thanks to the lower iron bias, it might assign it an 10 or 11/low tone (the low iron bias means you want the machine to call these kinds of "iffy" signals non-ferrous). If you aren't a cherry picker, maybe you dig...maybe not. Did any unmasking really occur? Not by my definition - the machine still only sees one target, so nothing was unmasked, you just manually changed how the machine interpreted the same signal. With higher recovery speed and high iron bias, the machine might now see the iron and dime separately with two separate hits - maybe -5 and 23. With high recovery speed and low iron bias, again two separate hits, this time maybe 10 (iron is dense enough to generate enough conductivity to false high, especially with the low iron bias) and 25. In these last two, unmasking really occurred, because two targets were resolved by the machine instead of one, but the individual targets were still impacted by the different iron bias settings.
Thanks for the demo, what I find confusing if you are able to set up the machine to get rid of the iron with the iron bias, why is it nog doing so automatically ? And what is the difference compared to normal discriminating?
Во,во часто чернина в цвет бьёт. Напомнил , спасибо!!!
Thanks for the video!🙂👍
.. what name brand case, coil cover, and screen cover do you have on your Equinox?🤔😎
Doesn't the problem of masking occur when both are in the same hole?
Yes, that's absolutely one of the drawbacks of using higher iron bias settings. At one point in the video (3:08 mark), I mentioned that iron bias is not intended to work as an unmasker - I meant to elaborate on that later in the video and simply forgot🤦♂ I consider true unmasking to be a situation where a detector can be set up to see two targets when it would otherwise see only one co-mingled target. Unmasking is what recovery speed, slower sweep speeds, and/or smaller coils, etc, are for. If a ferrous and non-ferrous target are too close together and recovery speed is too low, a target is more likely to get missed or ignored because the machine only sees one target instead of two. Iron bias can exacerbate this effect, of course - if iron bias is set too high, and the machine sees the two targets as one co-mingled target signal, a high iron bias set by the user will mark the signal as ferrous, and you’ll never hear a high tone. The difference is subtle, but important - changes in iron bias will never allow the machine to separate two closely spaced targets, it only changes how the machine interprets the signal.
I just push the horse shoe button and NO iron shows up. I metal detect beaches mostly and don’t need any more tent pegs.
I like hearing everything especially at cellar holes .. I just turn the iron vol. Down low ..
What are the drawbacks of having F2 (iron bias) set to high
masking... if iron is close to the good target
This will work in bech 2 correct?
Yes, Jade, this absolutely will work the same way in all of the detect modes as long as multifrequency is being used, including either Beach mode.
Beach mode shuts off the iron anyway.
Raise the coil let"s say 10 inches...the iron comes back with a high tone 👎👎👎 sold mine for that reason 😒
Sorry to hear you sold your Equinox, but hopefully you found a machine more to your own liking - having a machine that you trust and understand is more important than anything else in this hobby. But sure, iron bias has its limits and drawbacks, and yes, if you raise the coil significantly, you'll reach a point where iron bias loses its effectiveness and non-ferrous tones may start to come through again. Keep in mind, any machine from any manufacturer loses TID accuracy with increasing depth - it's a consequence of being near the edge of detection range. Up averaging and wrap around start to become bigger factors as the processor struggles to categorize weaker signals. You could raise the iron bias higher to try to compensate, but of course, there are definite drawbacks to that. Lastly, I'd make the case that if you raise the coil another 10", most machines wouldn't even be able to hit small targets like the gold pin I was demonstrating, especially in soil. Anyways, best of luck with whatever machine you chose.