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Does the DEUS II multi-frequency FMF® detect deeper?

Yes, the DEUS II has advantages in terms of performance using its multi-frequency programs, here are 5 of them:

  1. It can detect small targets (low electrical conductors) that a low-frequency detector such as 4 or 7 kHz would not detect, especially if the ground is mineralized. To check this, take some low conductivity targets (eg with a display value of 30-35, such as aluminium foil, fine coins, etc.), these targets will be quickly ignored at very shallow depth using a low frequency (eg 4 or 7 kHz), even in slightly mineralized soil, and they will be better detected in multi-frequencies.
  2. Alternatively lower frequencies can detect large masses or clusters of coins that a high frequency (eg. 20-80khz) would detect badly or not at all. We do not pass over a pile of coins every day to validate this, but to simply highlight it, take a roll of non-ferrous coins. You will see that multi-frequency programs accept them as good targets. Whereas high frequencies (eg. 20-80kHz) will discriminate or see them as ferrous, depending on the orientation of the roll. These signatures are seen as high-frequency ground and cannot be fully detected by a single frequency, except by lowering the discrimination to accept the ground.
  3. On electrically conductive terrain such as beaches saturated with seawater, FMF® will not generate the instabilities of a single-frequency detector and will therefore be able to detect deeper with much greater stability. In the same way, often in wet soil inland, a single frequency detector may register a large light halo which can suggest a large deep mass, whereas it is simply a question of variation of the conductivity of the wet ground. In multi-frequencies, using the DEUS II in the General or RELIC programs, the subtraction of soil moisture from the ground removes these halos, allowing you to focus on the true deep masses.
  4. In most situations the multi-frequency programs offer a reliable target display (TID) at depth, the same applies to the tone which is closer to reality and has less fluctuation than a single frequency detector. In Full Tone mode, the tones will also vary less. This is even more noticeable on the weak target range where single frequency detectors can give unreliable information.
  5. It is easier to categorize unwanted targets. For example, the Bcap reject mode makes it possible to reject ferrous caps without affecting desired targets. Also, you will notice the ability to precisely “notch out “conductive stones (coke, coal, etc.) or holes and variations in the soil, such as wet clay soil which can often generate disturbances and halos. (Notch values of 23-25).

What frequencies are used in multi-frequency mode?

The DEUS II is equipped with a transmitter capable of transmitting many frequencies simultaneously. Depending on the programs, the most relevant are simultaneously demodulated (multi-demodulation) in order to then combine them in the best way.

DEUS II is unlike many other multifrequency detectors that usually offer multiple fixed frequencies, the DEUS II implements real combinations of different frequencies depending on the selected programs. For example, some will use low to medium frequencies (4 to 14kHz), and other programs will include higher frequencies up to 24kHz or 40kHz. To these combinations of frequencies specific signal processing is applied in order to best adapt to the terrain. These frequencies can be subtracted to remove electrically conductive soils or added to favour a wider range of targets if the soil is not too wet. In the program section of the manual, the title bar will show a summary of the information regarding the working platform implemented for each factory program.

As the DEUS II is scalable, the frequencies used and their combination may change over the course of future updates, here are the configurations in place on version 1.0:

  • 11 simultaneous multi-frequency programs, with combinations of each frequency range and different internal settings over the range 4 to 40kHz.
  • 1 single frequency program (N ° 7 DEUS MONO) built around 7 main frequencies: 4.5 - 7.5 - 13 - 17.6 - 25 - 32 - 40.5 kHz, each with 7 large offset steps, 49 frequencies in all.
  • Frequency range available from 4 kHz to 45 kHz: 4.08 to 4.76 kHz - 6.94 to 8.08 kHz - 10.39 to 15.15 kHz - 15.62 to 20.75 kHz - 22.06 to 28.57 kHz - 29.41 to 35.32 kHz - 36.36 to 45.45 kHz.

What does Fast Multi-Frequency really mean?

DEUS II uses simultaneous frequencies (transmitted and demodulated simultaneously) coupled with a fast audio reproduction to the user, with extremely short latency. You will not notice any difference in response time compared to DEUS.

How is the DEUS II radio link faster than the so-called “low latency” fast Bluetooth?

DEUS II, DEUS and ORX are all using a so-called "proprietary" radio link. This XP protocol is not standard, we have designed it especially for detecting, because Bluetooth brings a latency that seems too slow for our desired audio dynamics (100mS). Even if some people speak of "low latency", it is still too slow for detecting, just 40ms slower.

Therefore, our "proprietary" link is about 10 times faster. For example, when you sweep fast to locate a target at 2 meters per second, 40 milliseconds represent an offset of 8cm on the area in one direction + 8cm in the other direction or 16cm of blur in which to represent the location of the target, it's simply not acceptable. Even more so if the terrain is polluted, you will not be able to locate targets quickly and waste a considerable amount of time chasing false sounds, time you will not spend on searching.

Why are there 2 plugs for waterproofing?

The advantage of the DEUS II over other waterproof detectors in deep submersion is to have a loudspeaker and a flexible keypad that is easy to use on land. In principle, underwater products do not have a loudspeaker but rather rigid potentiometers or push buttons resistant to pressure and to the expansion undergone during changes in temperature or atmospheric pressure. The pressures must be balanced on land use to avoid blockages of the speaker membrane or swelling of the flexible keypad. In principle, very shallow (1-3m) waterproof products on the market use microporous membranes which allow air to pass but will remain watertight up to a maximum of 1 to 3m. As the DEUS II goes deeper than 1-3m, we therefore offer the option of locking out this membrane during deep dives, by using the red cap. So please do not see this as a disadvantage but as an advantage of being able to combine speaker + active keyboard during deep submersion. If you are primarily searching on land, lakes, and shallow rivers, or in waves, you will probably never need the red cap.

  • GREY CAP n ° 1 = 1 m max. This is the plug for common use on land or in submersion of the remote control up to 1 m. A waterproof membrane allows air to pass but is resistant to a depth of 1 m. It balances the internal pressure to prevent the remote control from swelling when the temperature and pressure vary.
  • RED CAP n ° 2 = 20 m max. For underwater use only. On land, the red cap will not balance the internal pressure, which can cause the flexible keypad to swell or the loudspeaker to collapse when the temperature changes. If this happens to you and you notice a bad sound from the speaker, fit the grey plug and blow while placing your mouth level with the speaker grid to push it back. Before any submersion beyond 1m deep, screw the red cap N ° 2. Maximum depth 20 meters. Rinse the entire detector with clean water. Dry the detector with a towel. Replace the grey N ° 1 cap for all land use and up to 1m deep from the remote control.

Are changes planned for DEUS II 1.0?

Please understand that the DEUS II is a brand-new electronic platform equipped with new software that can accommodate multiple developments. Just as the DEUS when it was released in version 1.0 underwent significant upgrades up to the current version 5.21, the DEUS II will soon also receive software enhancements.