Fisher Research Labs PRO-TECH, User Manual

Page 1: ...Professional Metal Detector For the Archaeologist USER S MANUAL 0714...

Page 2: ...tor 2 Do not use indoors This detector is for outdoor use only Many household appliances emit electromagnetic energy which can interfere with the detector If conducting an indoor demonstration turn th...

Page 3: ...int 15 and 15 Operating in All Metal Mode Ground Grab GG Computerized Ground Balancing 16 Setting the Controls 16 Unwanted Noise 16 Sweeping the Searchcoil 16 Reading the Display 17 Target Scale 17 Op...

Page 4: ...d methods as you become more proficient in the field The new PRO TECH is unique among professional metal detectors for its combination of high sensitivity to small targets and its versatile function a...

Page 5: ...pipes bolts and nails In most Dig Site situations you will want to recover all of the metal targets including the iron Ferrous Metals which are made of or contain iron Pinpointing Pinpointing is the p...

Page 6: ...oved from the aluminum tube Armrest Strap The PRO TECH comes with an armrest strap for users who prefer to swing the detector vigorously in order to hold the detector securely against the arm The dete...

Page 7: ...the ground in front of you 10 Wind the CABLE securely around the STEMS 11 Connect CABLE PLUG to housing Do not twist the Cable or Plug Turn Locking Ring only Use minimal finger pressure to start the...

Page 8: ...rtment Battery Life Expect about 15 to 20 hours of life from a 9 volt alkaline battery Rechargeable batteries can provide up to 8 hours of usage per charge Speaker Volume and Battery Charge You may no...

Page 9: ...12 00 position for this demonstration 4 Click the right knob to the left to the DISC setting 5 a Wave the nail over the searchcoil b Press repeatedly while continuing to wave the nail Notice the chan...

Page 10: ...t low settings you will hear no sound ii at mid scale there will be a transition point from no sound to a barely audible choppy sound iii at full scale you will hear a loud constant tone It may also h...

Page 11: ...d with these things in mind 1 Ground Minerals All soils contain minerals Signals from ground minerals can interfere with the signals from metal objects you want to find All soils differ and can differ...

Page 12: ...te depth reading is available using PINPOINT Pinpoint displays target depth in inches The Pinpoint Mode does not require the searchcoil to be in motion to detect metals The ability to hold the searchc...

Page 13: ...and hold to enter no motion PINPOINT Mode In ALL METAL Mode press and hold while bobbing coil to set ground balance In DISC Mode Change discrimination level from 0 to 80 In ALL METAL Mode Change Groun...

Page 14: ...s your current sensitivity setting Sensitivity in DISC Mode The left knob is labeled GAIN and in DISCRIMINATION Mode it alone controls the sensitivity of the detector GAIN in ALL METAL Mode In All Met...

Page 15: ...in if necessary Silent searching will result in the loss of some sensitivity TOUCHPAD CONTROLS 1 GG PINPOINT This button has a dual function depending on the detection mode a In DISC Mode press and ho...

Page 16: ...e you search Refer to the Ground Balancing section pg 22 of this manual for a more in depth description Setting the Controls As you adjust any of the controls notice that the values on the bottom righ...

Page 17: ...e best starting point for achieving the correct setting After you perform the Ground Grab procedure the GND BAL number will change to match your soil You can change the current GND BAL setting by pres...

Page 18: ...sensitivity The higher the setting the deeper objects can be found and the more sensitive the detector is to very small metal objects MODE The right knob is not used in the Discrimination Mode Click...

Page 19: ...manual section on Target Pinpointing for how to narrow down a target s location This technique is indispensable as long buried metals can look exactly like the surrounding soil to the naked eye and ve...

Page 20: ...states 1 Blank no segments displayed 2 Grey segments displayed in a shaded color 3 Black segments are solid black The segments along the arc will remain illuminated in this state as you are pressing...

Page 21: ...O audio Represented by solid segments at DISC value 80 All detected targets induce HIGH tones Represented by solid segments There are no LOW tones No targets under 80 are detected Here is an example...

Page 22: ...nd more accurate target identification How to Ground Balance your detector Ground Balancing procedure with the GG touchpad 1 Turn the detector on and set GAIN at the 12 00 position 2 Click on the righ...

Page 23: ...ASE is the measurement of the ground GND BAL is the detector s internal setting which calibrates the detector to the ground s phase Notice that the GND BAL number is three digits with a decimal point...

Page 24: ...ing is to adjust the metal detector to ignore ground minerals If the setting is incorrect ground minerals will give either a positive or a negative response depending on which direction the adjustment...

Page 25: ...agnetic susceptibility is expressed in micro cgs units In a saltwater environment in the absence of iron minerals the bar graph indicates relative electrical conductivity In soils with greater than 10...

Page 26: ...e the low tone and which will be eliminated All targets audio responses in All Metal Mode will be V C O V C O Voltage Controlled Oscillator is an audio response which provides a good feel for the targ...

Page 27: ...at their ground balance value is a number lower than the soil they are found in They are usually but not always drawn to a magnet They are most often reddish in color but are often black brown or yell...

Page 28: ...ct metal detectors Overall the potential for electrical interference is greater than it was just a few years ago Modern high end metal detectors are a lot more sensitive than older units this also inc...

Page 29: ...e with severe electrical interference a small searchcoil is often a better choice than a large one Distinguishing electrical interference from other problems Electrical interference will often vary as...

Page 30: ...irregularly shaped object If the tone completely disappears at different angles the target may be trash or a low value metal If you are new to metal detecting dig all targets With practice in the fie...

Page 31: ...cate it by the sound The target is located directly under where the sound is loudest Narrow It Down 1 To narrow the response further position the center of the searchcoil near the center of the respon...

Page 32: ...1 inch widescan searchcoil Batteries Single 9 volt rectangular alkaline battery included Operating principle VLF induction balance Operating frequency 19 kHz crystal controlled Reactive overload 10 00...

Page 33: ...Labs for a Return Authorization RA Number Reference the RA number on your package and return the detector within 15 days of calling to Fisher Research Labs Inc 1465 Henry Brennan Dr El Paso TX 79936 P...

Page 34: ...Ta Intr Term Ass Bat Qui Hea Bas Ope Con Ope Ope Gro Targ Hot Ele Sea Targ Dev Wa Acc 34 PRO TECH Comprehensive Operating Manual Guide to Metal Detecting...

Page 35: ...35 Comprehensive Operating Manual Guide to Metal Detecting PRO TECH...

Page 36: ...ool Comes with a durable sheath 12 in length with a 7 serrated blade LESCHE KNIFE Coil Covers Specially made to protect your coil from abrasion and damage 11 DD Ellipse Accessory Coil Cover COVER 11DD...