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Chapter MXT Pro Controls

(Dual Control) in Coin & Jewelry or
Relic -

While operating in the Coin & Jewelry or Relic

MODES the Dual control operates as a DISC (discrimina-

tion) control. DISC (Discrimination) is used to adjust the level

of audio rejection against trash metals.

The “Triangle” just below NICKEL is recommended for most

general purpose searching. In this position, the detector

will provide a reject response to most iron and light foil and

respond to most valuables including jewelry.

Positions lower than “triangle” (counterclockwise) will provide

less trash metal rejection, to the point of detecting virtually

all types of common metals.

Positions higher than the “triangle” (clockwise) will reject

more trash metals including aluminum pull-tabs. The display

will continue to indicate I.D. even though the audio discrimi-

nator will signal with a reject (suppressed or broken) sound.

Nickels and some jewelry will also be rejected with DISC

settings much greater than the “triangle”.

The “triangle” position is recommended for most MODES.

If when searching at the “triangle” position you feel you are

digging too much trash, adjust DISC slightly clockwise and

try again. Using the lowest (furthest counterclockwise) posi-

tion that is practical considering the common trash metals

in your area is important in order to find items of jewelry.

Settings that suppress the USA nickel, and/or a medium 14K

gold ring, will also suppress most other gold jewelry. For

jewelry, it is best to keep the Discrimination at or near the

“triangle” and rely on the display and depth indication to sort

out aluminum.

Dual Control in Prospecting -

When in the Prospecting MODE, the DUAL CONTROL is

used to adjust the level or speed of SAT (Self Adjusting

Threshold).

The Threshold or continuous faint hum heard during opera-

tion of the MXT Pro can increase or fade due to environmen-

DUAL CONTROL

DISC- DISCRIMINATION (outer ring)

When in COIN & JEWELRY and RELIC MODE

VARIABLE SELF ADJUSTING THRESHOLD SPEED (SAT)

When in Prospecting MODE

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Содержание MXT PRO

Страница 1: ...MXT PRO Owner s Guide White s Electronics Inc Manufacturers of the World s Finest Metal Detectors ...

Страница 2: ......

Страница 3: ...racking for multiple passes over questionable signals This instruction manual will give you a good understanding of the basics There are no substitutes for field experience Practice using your MXT Pro and then study this manual further Before long you may well be teaching the experts a thing or two It is with pride we put our American Made Label on every metal detector we build At our facility her...

Страница 4: ......

Страница 5: ...UAL Control 11 Threshold Control 11 TRAC Control 11 Music Notes Tone ID 12 Ground Grab 12 Light Bulb Backlight 12 Trigger On Handgrip 12 Quick Start 13 Chapter 4 Display 14 Tone Selection 14 Coin Jewelry 14 Relic 14 Prospecting 14 Low Battery 14 Coin Jewlery 14 VDI Numbers 14 Display Blocks 15 Display Text Labels 15 Depth Indication 15 Relic 16 VDI Numbers 16 Display Blocks 16 Display Text Labels ...

Страница 6: ...3 Lock 23 Salt 23 Summary 24 GAIN Control 24 OVERLOAD 24 DUAL Control 26 Coin Jewelry Relic 26 Prospecting 26 GAIN VS SAT 27 THRESHOLD 28 Silent Search 28 Chapter 6 Searching 29 Pinpoint Technique 29 Optional Accessory DD Search Coils 29 Headphones Optional 30 Coin Jewelry Field Use Tuning Tips 31 Options 31 Relic Field Use Tuning Tips 32 Options 33 Prospecting Field Use Tuning Tips 34 Options 35 ...

Страница 7: ...RY CARTON WASHERS BETWEEN EACH LOOP EAR CLEVIS LOOP OR SEARCH COIL CABLE RETAINER ELBOW CUP STRAP CAMLOCK LOOP CONNECTOR CABLE RETAINER S ROD LOOP CABLE CLEVIS LOWER ROD Trigger behind display has multi function capability depending on which of the three modes you select Assembly shown on MXT 300 ELBOW CUP FOAM PADS INSIDE ELBOW CUP ...

Страница 8: ...bow cup with strap secure and sweep the loop search coil over the floor If the instrument fit feels uncomfortable adjust the elbow cup by removing and repositioning the bolt thumb nut and installing in one of the optional positions If necessary readjust clevis lower rod length with the spring clip buttons so that the search coil can be held near the floor without requiring stooping over 7 Remove t...

Страница 9: ...hing conditions you can expect about 40 hours of hunting time from a quality set of eight alkaline bat teries 2 Non alkaline batteries can be used in this holder When non alkaline batteries or rechargeable AA cells are used detecting time before replacement recharge may be reduced to about 30 35 hours 3 The battery voltage appears automatically on the display when the Gain is used to turn the MXT ...

Страница 10: ...o use and then steadily diminish in voltage till they no longer provide adequate power The optional Nicad rechargeable battery pack however will diminish slowly plateau in somewhat of a flat line and then near the end of their useful life very quickly decline Regardless of the battery used for long search periods backup cells are always suggested Rechargeable batteries deliver fairly constant volt...

Страница 11: ...ng Threshold SAT the speed at which the THRESHOLD hum recovers from the affects of inconsistencies in ground mineralization TRAC Toggle Three position switch selects Ground Mineral Tracking Ground for most searching Salt for salt water beach es or conductive alkali ground types or Lock to Lock or hold a particular ground setting THRESHOLD Control Establishes the slight background sound faint hum o...

Страница 12: ...ctive position reestablish a usable ground setting and then switch TRAC back to LOCK With GRAB you simply press and release the key right under your thumb and you have updated to current ground conditions Note last used TRAC position before Locking Salt or Ground determines the ground balance range available to Grab If Ground was the last TRAC position used Grab will grab the best available settin...

Страница 13: ...r blocks and the shallow depth indicates target center Dig targets with good sound over multiple search coil passes good display indication and consider Coin Relic depth as another likely clue as to target value 10 If you experience instability false signals or constant beeping or popping and you are not near common sources of electrical interference set TRAC to LOCK and or reduce GAIN counter clo...

Страница 14: ...tting audio suppressed iron if accepted low pitch tone 3 Prospecting Iron Grunt ON Targets with 80 and greater probability of being iron produce a unique grunt tone Press music notes to turn ON OFF When OFF all targets produce the same basic VCO audio varying only upon their size or signal strength Backlight will always revert to OFF during ON OFF cycles The MXT Pro operates on a twelve volt batte...

Страница 15: ... 12 inches and indi cating in descending order as the target gets closer to the bottom of the search coil the DEPTH 12 twelve inches deep provides not only an aid in better locating the target in the ground how deep you will need to dig but also clues as to if the metal target is likely worth digging For example if the display is unsure quarter block indication is indicating in the FOIL range and ...

Страница 16: ...gated pinpoint elongated tar get The exception is that a large target that is very deep will tend to provide a small pinpoint area as well as an inaccu rately shallow depth indication Use this to your advantage a shallow depth indication 0 1 inch having dug six inches and not found the target is a larger deeper target Relic MODE The Relic MODE also provides 5 different significant indica tions on ...

Страница 17: ... size Block indication means dig Shallower targets and a quarter or half size block suggests trash This is because the older heavier more desirable targets settle deeper into undisturbed ground The shallower Depth readings typically have fuller Blocks to warrant digging Again Small pinpoint small target Relatively larger pinpoint larger target Elongated pinpoint elongated target The exception is t...

Страница 18: ...to small positive numbers it is usu ally a small piece of some metal and should be investigated by digging Remember small flakes of gold in bad ground can read into the small negative range A magnet on your digging pick can sort out a small shard of iron quickly 2 IRON TARGET Indicates the likelihood the target is ferrous iron expressed in a This indication can be different in different areas depe...

Страница 19: ... in a Dry Wash Within a dry wash the gold will settle with the heavier materials black sands When searching you notice the ground phase is declin ing lowering in number generally you are working further away from the heavy black sand deposits If you notice the ground phase is increasing generally you are working toward closer to the heavier depos its By following the more intense ground phase high...

Страница 20: ... sup pressed quiet or broken by the audio and metal items accepted by the Discrimination control set ting produce a smoother solid audio beep Trigger Squeezed and held Pinpointing Depth Reading When operating in the Coin Jewelry MODE and the Trigger on the handgrip is squeezed and held the audio changed to an all metal no trash rejection pinpoint mode and the display provides a screen that indicat...

Страница 21: ... counter clockwise seven different audio tones represent the entire target range from iron the lowest pitch to large silver coins the high est pitch Audible tones are depending upon the Discrimination setting rejected targets audio is suppressed so not all seven tones may be heard As the discrimination control is advanced lower pitch tones starting with iron the low est are suppressed eliminated P...

Страница 22: ...iscrimination control disabled has no influence over audio Tone 1 Based on the Discrimination control setting rejected targets audio is suppressed Chapter 5 MXT Pro Controls Iron if accepted by the discrimination control setting produces a low pitch tone Accepted targets produce a high pitch tone As the Dis crimination control is advanced clockwise the audio of targets below the current Discrimina...

Страница 23: ...round or Salt position and pump the search coil over a clean area of ground representative of the area free of man made iron then switch the TRAC control to Lock By doing so stability and success search ing these trashy areas will improve dramatically Because ground changes are monitored during Lock pressing and releasing the GROUND GRAB button or switching back to either Ground or Salt tracking p...

Страница 24: ...rack into the nonferrous metal region Despite this draw back the Salt setting still provides improved overall performance while operating in the salt alkali ground condition Chapter 5 MXT Pro Controls Gain Control ON OFF With the GAIN control you turn the instrument On Off and select the signal strength You might expect increased signal strength to always find more at greater depths However high g...

Страница 25: ...fts 9 The MXT Pro provides more GAIN control range than is typically useful assuring performance Few areas will allow maximum GAIN full clockwise without at least some degree of noisy operation Setting in the area requires a high degree of operator skill Chapter 5 MXT Pro Controls indicates a very large target sweep loop higher over area to confirm if the target may be of interest NOTE Ground Mine...

Страница 26: ...e jewelry will also be rejected with DISC settings much greater than the triangle The triangle position is recommended for most MODES If when searching at the triangle position you feel you are digging too much trash adjust DISC slightly clockwise and try again Using the lowest furthest counterclockwise posi tion that is practical considering the common trash metals in your area is important in or...

Страница 27: ... of when less GAIN will produce more nuggets You must be the best judge of just how much noise you can tolerate and still identify nuggets and thus the amount of SAT and GAIN to use to produce the desired results in your area If you have been operating your MXT Pro at the full level of GAIN 3 and you determine that this is too high because either the threshold is erratic or the detector is giving ...

Страница 28: ...esolution thus you can set the hum faster and more accurately Set the knob all the way to the left or counterclockwise and then rotate it clockwise until the faintest audible level of hum is attained edge of sound If the hum disappears for any reason other than bumping the control you may be either swinging the coil too fast or your GAIN control is set too high or in the prospecting MODE you may n...

Страница 29: ...e a magnet handy preferably in the handle of your digging pick to pull iron out of the dirt pile It will speed up your recovery time It will work on small almost invisible iron rocks as well Accessory DD search coils recommended for extreme ground mineral areas and or prospecting with the MXT Pro pinpoint significantly different than the standard equipment traditional concentric search coil Standa...

Страница 30: ...e a VOLUME CONTROL as there is no target volume control on the MXT Pro This is an important comfort issue Remember that you want the faintest THRESHOLD hum possible but a strong comfortable target signal With headphones you will be able to work with a lower THRESHOLD hum hear fainter target signals avoid bothering others with a beeping box and save on battery life Many high quality headphones from...

Страница 31: ...the pull tab range However note when aluminum is rejected the probability of digging jewelry substantially diminishes The highest furthest clockwise discrimination setting than still responds to the USA nickel or a medium sized 14K gold ring is the highest trash rejection level that still responds to most jewelry 11 Ground Mineralization A For Salt Alkali environments proceed exactly as above only...

Страница 32: ...can tell you is that it indicates within that mid range of targets It is up to the operator to identify the common trash items of each area and then gamble with the odds weighing the likelihood of good targets compared to the degree of time digging trash The 4th option is Threshold level It is best to search with a continuous hum or threshold edge of sound You can hear rejected targets threshold f...

Страница 33: ...you are in a salt water or desert alkali ground condition use the TRAC Salt setting Highly fertilized farm fields iron ammonium nitrate oxides when wet may also benefit from the SALT setting When to use the Lock setting can be less obvious If it seems like something is wrong with the detector wildly fluctuating Threshold hum only during sweeping the search coil try the Lock setting If the detector...

Страница 34: ... ing from left to right Overlap your sweep path so that Prospecting MODE you won t miss the small and or deeper metal targets 9 Once a solid repeatable VCO beep is located consult the display VDI number and Iron Squeeze and hold the Trigger on the handgrip and the search coil over the area to pinpoint 10 Ground Mineralization A For Salt Alkali environments proceed exactly as above only with the TR...

Страница 35: ...operation normal P or reduced Gain settings provide Others prefer to push Gain to the limits of their patience to find the deepest targets There is a point of diminishing returns either indicated by the OVERLOAD display telling you to lift the loop due to a Gain setting to high for the ground or a user missing targets because they can not sort them from sporadic noise experienced at high Gain The ...

Страница 36: ...nt However it must be protected from heavy rain 3 Storage A When the instrument is not in use make sure it is turned OFF B If you plan on storing your detector for long remove the battery holder from the instrument and remove the batteries from the holder C Store the instrument indoors in an area where it will be protected from abuse Over the years White s has noted a higher percentage of service ...

Страница 37: ...ions 1 White s Electronics 1011 Pleasant Valley Rd Sweet Home OR 97386 541 367 6121 Fax 541 367 6629 tmarshall whiteselectronics com 2 Electronic Exploration 575 West Harrison Lombard IL 60148 800 392 3223 630 620 0618 630 620 1005 FAX tony ee il com 3 Centreville Electronics 9437 Main Street Manassas Va 20110 888 645 0202 703 367 7999 703 367 0868 FAX bob cwrelics com Gold Search Australia Tony M...

Страница 38: ... Freight Next Day 2nd Day Packaging Services etc and all shipping handling Chapter 7 MXT Pro Information costs inside the continental USA 90 days after purchase White s registers your purchase only if the Sales Registra tion Card is filled out and returned to the factory address soon after original purchase for the purpose of recording this information and keeping you up to date regarding White s ...

Страница 39: ...ation Card is returned to the factory address within 10 days of the original purchase for the purpose of recording that date which is the actual commencement date of the warranty Chapter 7 MXT Pro Information FOR SCOTLAND ORIGINAL OWNER Name _________________________________________ Address Which appears on the original warranty card ______________________________________________ ________ ________...

Страница 40: ... 6629 Email tmarshall whiteselectronics com Website www whiteselectronics com White s Electronics Factory UK Ltd Sales Service Area Europe Eastern Europe Africa and the Middle East 35 J Harbour Road Inverness Scotland IV1 1UA Telephone 01463 223456 Fax 01463 224048 Email sales whites co uk Website www whites co uk Printed in the U S A Part Number 621 0522 5 2010 ...

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