I am getting very interested in the new X-terras. I realize that about Christmas and in the Spring we are going to see new machines offered. I take a look at the specifications, the Owners Manuals, and go from there.
In the years I have been using detectors the technology has a few major advances. They are from electron tube, transistor, discrimination, chips, microprocessor, ground balance, motion, motion discrimination, and multiple frequencies. One fundamental operating principle is they all transmit an electromagnetic field and a metal target distorts the filed.
The primary goal has been how to process those distortions be it time domain or frequency domain to extract information. Frequency domain is the typical sine wave we see on and oscilloscope. Since this can be generated by rotating a conductor in a magnetic field through 360 degrees it is easy to calculate phase angles. This is frequency domain and the most common type of detector. This is what the new X-terras are is frequency domain. If we see a sudden voltage spike that jump up and then dies down we cannot make calculation using the same equations and in the same was as frequency domain. The spike is considered to be a temporal event that so it takes a different kind of analysis. The Explorer has a pulse of energy that induces a voltage in a target and the temporal evolutions of a currents generate a self induced voltage and current that can be measured. This time domain so think of temporary voltage spikes as time domain and voltages that increase and decrease based on a sinusoid as frequency domain
That is the whole ballgame so how we analyze TD and FD is the deal. Minelab has done something of interest with the new X-terras in matching the coil to a single frequency and this is a big however they are doing it with a better generated sine wave. In addition they have simplified the detector and selected two of what I think are the better frequencies. Something between 2khz and 20khz is going to be great for coin sized targets. Something very close to 6.5khz would be my choice if I designed a single frequency detector. Coins, jewelry and relics are going to respond in an outstanding way to that frequency. For a relic machine ONLY I would go with 2khz to 3khz for sensitivity to iron and depth. The older TR machines would kick the frequency way up to about 100khz for less sensitivity to iron and to detect tiny gold nuggets but at the sacrifice of depth.
So, I think I am going to get the X-terra 50 to go with my Explorer and Sovereign. I am getting older and need to be thinking of something easy to swing and think these machines are going to be great in heavy trash. I have looked at the other offering and what I see other models repackaged. Please understand I don
In the years I have been using detectors the technology has a few major advances. They are from electron tube, transistor, discrimination, chips, microprocessor, ground balance, motion, motion discrimination, and multiple frequencies. One fundamental operating principle is they all transmit an electromagnetic field and a metal target distorts the filed.
The primary goal has been how to process those distortions be it time domain or frequency domain to extract information. Frequency domain is the typical sine wave we see on and oscilloscope. Since this can be generated by rotating a conductor in a magnetic field through 360 degrees it is easy to calculate phase angles. This is frequency domain and the most common type of detector. This is what the new X-terras are is frequency domain. If we see a sudden voltage spike that jump up and then dies down we cannot make calculation using the same equations and in the same was as frequency domain. The spike is considered to be a temporal event that so it takes a different kind of analysis. The Explorer has a pulse of energy that induces a voltage in a target and the temporal evolutions of a currents generate a self induced voltage and current that can be measured. This time domain so think of temporary voltage spikes as time domain and voltages that increase and decrease based on a sinusoid as frequency domain
That is the whole ballgame so how we analyze TD and FD is the deal. Minelab has done something of interest with the new X-terras in matching the coil to a single frequency and this is a big however they are doing it with a better generated sine wave. In addition they have simplified the detector and selected two of what I think are the better frequencies. Something between 2khz and 20khz is going to be great for coin sized targets. Something very close to 6.5khz would be my choice if I designed a single frequency detector. Coins, jewelry and relics are going to respond in an outstanding way to that frequency. For a relic machine ONLY I would go with 2khz to 3khz for sensitivity to iron and depth. The older TR machines would kick the frequency way up to about 100khz for less sensitivity to iron and to detect tiny gold nuggets but at the sacrifice of depth.
So, I think I am going to get the X-terra 50 to go with my Explorer and Sovereign. I am getting older and need to be thinking of something easy to swing and think these machines are going to be great in heavy trash. I have looked at the other offering and what I see other models repackaged. Please understand I don