Fisher Research Labs F75 Special Edition Скачать руководство пользователя страница 7

Comprehensive Operating Manual & Guide to Metal Detecting

Comprehensive Operating Manual & Guide to Metal Detecting

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F75

SE

F75

SE

9

Adjust the LOWER STEM to a length that lets you maintain a comfortable upright posture, with
your arm relaxed at your side, and the SEARCHCOIL parallel to 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
threads.  Do  not  cross-thread.  When  the  Locking  Ring  is  fully  engaged  over  the  threaded
connector, give it a firm turn to make sure that it is very tight. When the Locking Ring is fully
engaged over the threaded connector, it may not cover all of the threads.

12

Tighten both LOCKING COLLARS.

Assembly (continued)

minerals, serious gold prospecting requires a detector with high sensitivity

and true ground balanced motion all metal operation.  Run the

machine with the sensitivity high enough to hear some noise

from ground minerals, and 

learn the language 

of the

sounds you hear.  Headphones are recommended

unless consideration for safety (for instance

rattlesnakes) rules them out.  Move the searchcoil

slowly and deliberately, carefully controlling its

height above the ground to minimize noise from

iron minerals in the soil. If you hear ground

noise, your Ground Setting could be a bit

off, so perform the ground balancing

procedure again. As you walk even a
very short distance, ground conditions

can change. The ground geology

typically associated with gold will

tend to change over very short

distances.

The  Fe

3

O

4

bar graph indicates the amount

of iron mineralization in the soil.  In most gold fields,
especially alluvial (placer) deposits, gold tends to be
associated with iron minerals, especially magnetite

black sand.  

If you know this to be the case in the area

you're working, you can maximize your gold recovery by

concentrating your effort on areas where the bar graph

indicates higher amounts of iron mineralization.  

Gold prospectors are mostly a friendly bunch, and willing to

spend some time showing a beginner how to increase his
odds of finding the yellow stuff.  Many will invite you to search

on their claims (if they have any) once they get to know you.

In some gold areas, a lot of the terrain is under claim, so you need

to learn how to recognize posted claims and stay off of them unless you have the claim
owner's permission.  Prospecting clubs such as the GPAA often own claims which are open to
their members,  and sponsor group outings to good gold areas.

It’s a thrilling experience to dig into the ground and pull out a precious piece of yellow metal
that you are the first person on earth to see.  If you love being outdoors, have patience, and
can stay motivated by the prospect of finding that next nugget, then 

beeping for gold 

may be

the hobby for you.  While only a few get rich prospecting, if you are not among them, think of it
as outdoor recreation where your finds defray the expense of having fun!  

Detecting Activities (continued)

Gold Prospecting (continued) 

*

Note: Very tall users can purchase the optional Extended Lower

Stem (TUBE5X), for extended reach.

F75ltdBLK-MANUAL.qx6  3/31/14  2:01 PM  Page 7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Содержание F75 Special Edition

Страница 1: ...0714 Better performance in High E M I environments Even better target separation SPECIAL EDITION Metal Detector User s Manual...

Страница 2: ...Motion All Metal Trigger actuated FASTGRAB ground balancing with manual override Waterproof 11 inch open frame BiAxial searchcoil Trigger actuated target pinpointing with variable audio pitch Fully A...

Страница 3: ...able Target Identification 25 Depth Indicators 26 Confidence Indicator 26 Fe3O4 Graph 26 Battery Indicator 27 G B 27 Setting 27 Messages 27 Frequency Shifting 28 Capabilities Limitations 29 31 Tips Te...

Страница 4: ...nal 13 kHz quartz crystal timing reference 13158Hz 13100Hz 13043Hz 12987Hz 12931Hz 12876Hz 12821Hz Basic Sensitivity 6 x 10 9 root Hertz detectivity Lag Coefficient 78 milliseconds Reactive Overload a...

Страница 5: ...ground If you stop moving the searchcoil the sound will also stop Probable target type will be indicated at the top of the LCD screen 6 If the searchcoil is not in motion and not close to metal the d...

Страница 6: ...e the MIDDLE STEM until the SILVER BUTTON locates in the hole 6 Twist the LOCKING COLLAR fully in the clockwise direction until it locks 7 Repeat this process on the LOWER STEM 8 Using the BOLT and KN...

Страница 7: ...the Cable or Plug Turn Locking Ring only Use minimal finger pressure to start the threads Do not cross thread When the Locking Ring is fully engaged over the threaded connector give it a firm turn to...

Страница 8: ...le warning Always install batteries which are of the same type and the same state of charge Otherwise battery life will be determined by the weakest battery because the good batteries cannot deliver t...

Страница 9: ...As you swing the detector from side to side you want the bolts tight enough so that you do not feel any movement between the pole and armrest mounting bracket If you notice unwanted movement while sw...

Страница 10: ...etal object The display provides continuous information on battery condition and on ground mineralization which affects detection depth Help messages are automatically displayed on the bottom of the d...

Страница 11: ...or off and controls speaker volume and headphone volume Knob position has no effect on detector s sensitivity or susceptibility to noise from electrical interference On Off Volume Switch Menu Access...

Страница 12: ...the top line of the menu is highlighted When used to switch back and forth between the DISCRIMINATION Mode and ALL METAL Modes the detector changes modes as soon as the corresponding selection is high...

Страница 13: ...DISCRIMINATION Sensitivity Discrimination Level Notch Number of Tones and Process Number To select a function push the MENU button and continue pushing in order to move to the function you want The wo...

Страница 14: ...present 2 Hold the detector with the searchcoil about one foot above the ground 3 Push the TRIGGER SWITCH forward with your index finger 4 Physically pump the searchcoil and detector up and down over...

Страница 15: ...an 40 manual ground balancing is required To perform the Manual Ground Balancing operation do the following 1 Select the MANUAL G B function The legend G B SETTING appears The present ground balance s...

Страница 16: ...a metal object Ground Balancing continued Se The resu tras find tras lead slow The the drift ordi if yo dete In a pred aga the prod usin Mos sele also Wh proc fam con mar the und Pin Wh nea loud just...

Страница 17: ...ries over to Static Mode and Discrimination Mode SENSITIVITY This controls the signal gain and is adjustable from 1 to 99 In the presence of electrical interference high ground mineralization or varia...

Страница 18: ...om background noise and or a slight amount of ground response If you do not hear these noises you will sacrifice detection depth If the background chatter is too annoying or the ground noise is so hig...

Страница 19: ...d to adjust to a setting of 29 or less to silence electrical interference or to prevent overload on highly mineralized ground or in saltwater You may also notice a shift in the ground balance setting...

Страница 20: ...nge TAB range is from 36 to 55 will be eliminated from detection 6 A half slash will be permanently displayed across the top left of the word TAB NOTCH allows you to select target ranges equal to 1 2...

Страница 21: ...e or exclude from detection Beware that this combination can be confusing Here are some examples of NOTCH used in conjunction with DISC LEVEL If Discrimination Level is set at 60 and you set the top o...

Страница 22: ...sponds with a faster shorter audio duration This improves target separation dE DEFAULT PROCESS This is the best process to use for most conditions and is thus the default JE JEWELRY PROCESS Detector w...

Страница 23: ...ache Locating process in the Discrimination Mode Audio Pitch To change Audio Pitch choose this selection under the All Metal Menu see pg 17 instructions WHAT YOU SEE VS WHAT YOU HEAR The visual Target...

Страница 24: ...target How to Pinpoint Position the searchcoil an inch or two 2 5 5cm above the ground and to the side of the target Then pull the trigger Now move the searchcoil slowly across the target and the soun...

Страница 25: ...U S 1 Eagle OBJECT TARGET ID Most iron objects 4 12 foil from gum wrapper 16 25 U S nickel 5 coin typically 30 aluminum pull tab 33 55 aluminum screwcap 60 70 zinc penny dated after 1982 typically 60...

Страница 26: ...igit target identification it has assigned If all 6 segments are displayed you can be confident that the Target ID is accurate If 3 or fewer segments are displayed the confidence is very low Junk targ...

Страница 27: ...ISE COIL will appear Such overloads will not harm the detector but the detector will not detect metals properly under these conditions Raise the coil until the message disappears the siren sound will...

Страница 28: ...riencing electrical interference If you suspect electrical interference you may change the F75 s operating frequency This is a trial and error method to try to find a frequency different from the susp...

Страница 29: ...ty alloys such as iron bronze brass lead pewter and zinc will read lower on the effective conductivity scale Larger objects and objects made from higher conductivity alloys such as silver copper and a...

Страница 30: ...etector without sweeping it over the ground for instance if not fully assembled or if you are indoors To air test place the searchcoil in a spot where the detector is stable and more than two feet awa...

Страница 31: ...lds of the Double D construction can produce anomalous responses If the object feels shallow strong signal narrow response or multiple responses in a single sweep and is giving consistent high reading...

Страница 32: ...oil until the overload warning disappears and sweep at this increased height Large Targets If an overload warning is not confined to a small spot you are probably overloading on a large object for exa...

Страница 33: ...nes or by lengthening the duration of good sounds that were too hard to hear amid trash sounds old sites are again productive If a site has been especially productive in the past you may want to revis...

Страница 34: ...coil higher and higher If the response diminishes quickly and never gets very broad the target is probably a coin If the response diminishes slowly as you lift the searchcoil and you get a broad respo...

Страница 35: ...ferrous targets in the proximity of iron indicating ID numbers higher than would be obtained in an air test This tendency is connected with the F75 s enhanced see through ability that is the ability t...

Страница 36: ...ther digging them since nonrepeating signals are almost always trash GROUND MINERALS Conductive mineral salts usually produce broad signals which will not be mistaken for a metallic object Common caus...

Страница 37: ...gold nugget and are common in many gold prospecting areas They are usually but not always drawn to a magnet They are most often reddish in color but are often black brown or yellow On relic hunting s...

Страница 38: ...he machine without ground balancing In most areas once you have ground balanced the ground balance setting will remain satisfactory for a long time However if the soil has been disturbed by digging or...

Страница 39: ...mission of the property owner Most of the public places where one is likely to do coinshooting are city county or school district property There is usually no ordinance prohibiting use of a metal dete...

Страница 40: ...egal Certain kinds of sites on both public and private land are protected by law from relic hunting If there is a metal detecting club in your area some of the members will probably know what the laws...

Страница 41: ...es Alaska and in a few localities in the Appalachians The old saying Gold is where you find it means that to find gold you should look in areas where the yellow metal is known to be present Hillsides...

Страница 42: ...te black sand If you know this to be the case in the area you re working you can maximize your gold recovery by concentrating your effort on areas where the bar graph indicates higher amounts of iron...

Страница 43: ...and sometimes it belongs to the person who finds it or some combination of the above If the contents of the cache were stolen this fact can also complicate the question of ownership Find out what law...

Страница 44: ...lenges You may get false signals when going into and coming out of the water making it necessary to pay careful attention to keep the coil either in or out of the water but not to touch the surface Th...

Страница 45: ...these tasks in software running on an internal microcomputer The iron minerals which are present in most soils also distort the magnetic field obscuring the weak signals of small or deep objects This...

Страница 46: ...care to refill all holes and leave no damage Remove and dispose of any and all trash and litter found Appreciate and protect our inheritance of natural resources wildlife and private property Act as a...

Страница 47: ...bs 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 Pho...

Страница 48: ...Comprehensive Operating Manual Guide to Metal Detecting F75 SE B M75MBLK Rev 4 101514...

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