You can tell I am bored as hell here at work (things are real slow as to be expected on a Friday):clsoedeyes:, so I switched over to my private folders an was grazing through my detecting archives for info that I felt might benefit some especially as they relate to topics I have seen discussed here. One of those topics is swing speed. See the article below. I do know that the T2 has a super quick target response time. The last two paragraphs of this article should especially be noted.
Slow motion vs. fast motion normally refers to two filter (slow) or four filter (fast) motion-based metal detector designs. Actually, you are dealing with two, three, or four "post" filters, rather than more filters in one machine than another, but that's another story and gets deeper into the technical design of the machines.
The first motion-based discrimination detectors were the so-called "4-filter" style, and most of them had to be swung at breakneck speed to get the best performance, much faster than the later "2-filter" design detectors.
Although later machines are technically "slow motion" designs, they operate well at "most" normal coil sweep speeds short of very fast or nearly still. A lot also has to do with the speed of the SAT or self adjusting threshold circuits which basically "retune" the audio threshold level back to it's pre-set level after a target is encountered and a signal produced by the detector in all-metal mode. If the SAT speed is too slow, then swinging the coil at too fast a speed can cause "target masking", because the threshold or perceived target acquisition speed is not retuning fast enough to allow for good target separation of two targets in close proximity to one another. You actually have a "target response speed" on the front end of the signal response, or how fast the machine responds once the target is detected, and then the SAT speed on the back end of that same signal, two different but closely related functions of the receiver circuits in the all-metal mode, while the discrimination mode incorporates more of a front and back end response timing without the use of audible threshold during hunting (silent search). Many units have excellent, fast target response in the discrimination mode that allows for a wider range of sweep speeds. One area of concern that should be mentioned, however, is that when you are hunting areas of higher ground mineralization concentrations, you should always slow down the coil swing, especially so in discrimination mode, to allow the detectors filters to better compensate for the ground mineralization. Since you will be using a audible threshold base in all-metal mode, you will be able to much better discern the ground conditions while hunting in that mode, since you will be able to hear even the slightest change in ground mineralization conditions. Hope this is of some help.
Slow motion vs. fast motion normally refers to two filter (slow) or four filter (fast) motion-based metal detector designs. Actually, you are dealing with two, three, or four "post" filters, rather than more filters in one machine than another, but that's another story and gets deeper into the technical design of the machines.
The first motion-based discrimination detectors were the so-called "4-filter" style, and most of them had to be swung at breakneck speed to get the best performance, much faster than the later "2-filter" design detectors.
Although later machines are technically "slow motion" designs, they operate well at "most" normal coil sweep speeds short of very fast or nearly still. A lot also has to do with the speed of the SAT or self adjusting threshold circuits which basically "retune" the audio threshold level back to it's pre-set level after a target is encountered and a signal produced by the detector in all-metal mode. If the SAT speed is too slow, then swinging the coil at too fast a speed can cause "target masking", because the threshold or perceived target acquisition speed is not retuning fast enough to allow for good target separation of two targets in close proximity to one another. You actually have a "target response speed" on the front end of the signal response, or how fast the machine responds once the target is detected, and then the SAT speed on the back end of that same signal, two different but closely related functions of the receiver circuits in the all-metal mode, while the discrimination mode incorporates more of a front and back end response timing without the use of audible threshold during hunting (silent search). Many units have excellent, fast target response in the discrimination mode that allows for a wider range of sweep speeds. One area of concern that should be mentioned, however, is that when you are hunting areas of higher ground mineralization concentrations, you should always slow down the coil swing, especially so in discrimination mode, to allow the detectors filters to better compensate for the ground mineralization. Since you will be using a audible threshold base in all-metal mode, you will be able to much better discern the ground conditions while hunting in that mode, since you will be able to hear even the slightest change in ground mineralization conditions. Hope this is of some help.