Omega 8500 Owner'S Manual Download

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TABLE OF CONTENTS

Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Quick-Start Demo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8

Basics Of Metal Detecting . . . . . . . . . . . . . . . . . . . . . . . . .9-10

Ground Minerals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Trash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Identifying Buried Objects . . . . . . . . . . . . . . . . . . . . . . .9

Size and Depth of Buried Objects . . . . . . . . . . . . . . . . .9

EMI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Headphones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Operation and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-14

Display and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Control Knobs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

On/Off/Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Disc/AM/Thresh . . . . . . . . . . . . . . . . . . . . . . . . .12

Separate Gain and Threshold Controls . . . . . . .13

Touchpad Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Ground Grab

Computerized Ground Balancing 13

Pinpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Pinpoint Retuning . . . . . . . . . . . . . . . . . . . . . . . .14

Menu/Quick-Switch . . . . . . . . . . . . . . . . . . . . . . .14

Plus and Minus . . . . . . . . . . . . . . . . . . . . . . . . . .14

Menu Items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-18

Discrimination Level . . . . . . . . . . . . . . . . . . . . . .15

Notch: Selective Target Inclusion or Exclusion . .15

Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Notch Volume . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Deep . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Ground Grab Offset . . . . . . . . . . . . . . . . . . . . . .17

Tones: Variable Tone Selection . . . . . . . . . . . . . .17

d4 and d5 Tones . . . . . . . . . . . . . . . . . . . . . . . . .17

Frequency Shifting . . . . . . . . . . . . . . . . . . . . . . .18

Backlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

None Volatile Memory . . . . . . . . . . . . . . . . . . . . .18

Reset Factory (Factory Default) . . . . . . . . . . . .18

Ground Balancing . . . . . . . . . . . . . . . . . . . . . . . . . .19-20

Bar Graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Ground Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-21

Depth and Target Display . . . . . . . . . . . . . . . . . . . .22-24

Common Target Value Table . . . . . . . . . . . . . . . . . . . .24

Search Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Target Pinpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Code of Ethics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover

Summary of Contents for 8500

Page 1: ... 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 the sensitivity down and keep the searchcoil away from appliances such as computers televisions and microwave ovens If your detector beeps erratically turn off appliances and lights Also keep the searchcoil awa...

Page 2: ...zed Ground Balancing 13 Pinpoint 13 Pinpoint Retuning 14 Menu Quick Switch 14 Plus and Minus 14 Menu Items 15 18 Discrimination Level 15 Notch Selective Target Inclusion or Exclusion 15 Volume 15 Notch Volume 16 Deep 16 Ground 16 Ground Grab Offset 17 Tones Variable Tone Selection 17 d4 and d5 Tones 17 Frequency Shifting 18 Backlight 18 None Volatile Memory 18 Reset Factory Factory Default 18 Grou...

Page 3: ...n objects are old cans pipes bolts and nails Sometimes the desired target is made of iron Property markers for instance contain iron Valuable relics can also be composed of iron cannon balls old armaments and parts of old structures and vehicles can also be composed of iron FERROUS Metals which are made of or contain iron PINPOINTING Pinpointing is the process of finding the exact location of a bu...

Page 4: ...ccessory The strap is available for purchase as a separate accessory Some users prefer to use the strap when swinging the detector vigorously in order to hold the detector secure against the arm The detector can also be used without the strap with no compromise to detector balance and stability under most conditions Battery Compartment back side Handgrip Nut Screw Searchcoil Cable Locking Collar L...

Page 5: ... 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 c...

Page 6: ... of usage per charge Backlight use decreases battery life with significant drain at maximum brightness SPEAKER VOLUME AND BATTERY CHARGE You may notice the speaker volume drop while one battery segment is illuminated With one segment flashing low speaker volume will be very apparent BATTERY INDICATOR The remaining battery life is proportional to the percentage of the battery icon illuminated After...

Page 7: ...s and hold then turn on detector with the GAIN knob Release Set GAIN at the 12 00 position IV Turn the THRESH knob all the way counterclockwise until it clicks V Wave each object over the searchcoil a Notice a different tone for each object Bass Tone Nail Low Tone Nickel and Zinc Penny High Tone Quarter b Motion is required Objects must be in motion over the searchcoil to be detected in this mode ...

Page 8: ...e Keep rotating the knob clockwise until you hear a faint hum Pass the quarter over the searchcoil Vary the distance from the searchcoil on each pass Notice the changing pitch and volume XIII Press and hold a Notice motion is not required A motionless object induces a sound b Notice the single audio tone PINPOINT produces only this single tone regardless of the type of metal detected c Vary the di...

Page 9: ... Balancing for details 2 Trash If searching for coins which will induce higher tone sounds you want to ignore items like aluminum foil nails and pull tabs These undesirable items induce lower tones You can listen to the sounds of all objects detected and decide on what you want to dig up Or you can eliminate unwanted metals from detection by using the DISCRIMINATION features 3 Identifying Buried O...

Page 10: ...e presence of EMI may make this impossible so if you experience erratic behavior or false signals reduce the sensitivity by adjusting your GAIN and THRESHOLD controls HEADPHONE JACK The detector has a 1 4 headphone jack on the left side of the housing When a headphone is connected speaker audio is disabled The headphone jack has a rubber plug that will keep dirt and moisture from entering the cont...

Page 11: ...UICKSWITCH Firmly press and release to activate the menu and change the menu item Press and hold to momentarily change modes ON OFF GAIN Click right to turn ON Turn knob to increase GAIN DISC AM THRESH Click left to enter Disc mode click right to enter A M mode Turn knob to increase the THRESHOLD setting Menu Items Number Identifiers Auto Ground Offset Ground Error window Backlight Target Categori...

Page 12: ...ng into the noise When some background level of noise is audible small changes in the volume and tone will denote the presence of buried metal 2 DISC AM THRESH a Click clockwise to enter the All Metal Mode b This is the detector s most sensitive mode of operation c It is a motion mode of operation the coil must be in motion to detect metal d All Metal Mode induces a hum whose pitch and volume vary...

Page 13: ...otion 3 Continue this pumping motion and watch the Ground Phase number in the center of the display 4 Once this number remains constant the detector has correctly measured the Ground Phase 5 Release the This will internally set the Ground Phase to the value displayed To manually adjust the ground setting see the GROUND menu item on page 16 If while performing Ground Grab one of the arrows in the G...

Page 14: ...rate the Menu firmly press and release the touchpad Note that the Menu actuates on the release of the touchpad Press and Hold to momentarily switch modes MENU The menu system packs the feature set in a dynamic and intuitive fashion It also has extended hidden features for the advanced user Access Press and release to enable menu items QUICK SWITCH Quick Switch alternates between ALL METAL and DISC...

Page 15: ...y was not eliminated from detection then notching that category will eliminate it from detection and the category icon will disappear If a category was eliminated from detection category s icon not illuminated then notching the category will return the category to an active state and the icon will reappear b The following target categories can be notched in or out Foil Nickel P Tab S Cap Zinc Dime...

Page 16: ...r soils and Sensitivity must be adjusted for proper use D3 Deep filter plus 50 Hz notch Same as D2 but with a 50 Hz noise filter Access Press and release the until DEEP menu is activated Use and to select desired mode Deep and Threshold relationship The DEEP Mode settings can affect the gain of the detector most notable in the All Metal Mode You may have to adjust the threshold If Threshold knob s...

Page 17: ...ystem see Target ID Indicators page 23 Normally the primary Target ID indicator Icon is black and the secondary target indicators will be grayed out or half tone In d5 tone setting both primary and secondary Target ID indicators will be solid black This will help when light conditions make it difficult to see the half tone indicators Access In Disc Mode press and release until TONES menu become en...

Page 18: ...ry power at a faster rate Access Press and release until LIGHT menu item is activated Use the to select desired backlight setting Use the 0 setting to turn backlight off NONVOLATILE MEMORY The Omega 8500 will save in memory your settings when the detector is turned off with the exception of the backlight and ground balance Backlight default is OFF and Ground Balance is 82 9 Access Automatic when p...

Page 19: ...ere you can hear a slight background hum 4 Sweep searchcoil across the ground to find a clear patch of ground with no metal present 5 Press and hold touch pad and pump searchcoil repeatedly over the clean ground keeping it level with the ground Start about 6 above the ground and lower to within 1 of the ground See illustration above 6 When the ground phase value number displayed in the screen cent...

Page 20: ...il several inches above the soil surface so it isn t seeing as much dirt By listening and watching you will know how high you need to hold the searchcoil in order to avoid overload The highest magnetic susceptibilities are usually found in soils developed over igneous rocks in alluvial black sand streaks on beaches and in red clay soils of humid climates The lowest magnetic susceptibilities are us...

Page 21: ...or into All Metal Mode 2 Pump the searchcoil up and down over a patch of ground free of metal repeatedly moving the coil to within 1 of the ground and lifting it up about 6 over the ground If bars appear at the top of the graph manually adjust the Ground Setting negatively until all of the bars disappear If bars appear at the bottom of the graph manually adjust the Ground Setting positively until ...

Page 22: ...iddle or left of center on the LCD scale Gold flakes will register under iron Small gold items will register under foil or 5 Large gold items will register toward the center of the scale SILVER TARGETS Silver objects will register to the right of the scale under DIME or QTR IRON All sizes of iron objects will register on the far left side of the scale This could indicate on item such as a nail or ...

Page 23: ...n of buried objects The target value can vary each time the coil passes over the target depending upon the angle of the object and the distance from the coil For reference see the chart on the next page for some common Target ID numbers Note Discrimination andAll Metal TID systems are separated You can double check Target IDs by using the quick switch feature Multiple Target Category System This f...

Page 24: ... notched out will not be able to display a primary TID or audio report You will still have the benefit of all the secondary IDs even if the secondary IDs fall in categories that have been discriminated or notched out If you see only a primary TID it means all primary and secondary TIDs agreed on that category A bottle cap that reads as iron in air will most likely have all TIDs agree that it is in...

Page 25: ...object If the tone completely disappears at different angles the target may be trash or a low value metal If you are new to the hobby dig all targets With practice in the field you will soon identify audible and visual target feedback with certain types of metal objects Pinpointing process in motion modes 1 Sweep over target in narrowing side to side pattern 2 Take visual note of spot on ground wh...

Page 26: ...wly across the target and you can locate 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 response pattern but not directly over the center 2 Release 3 Press and hold again 4 Repeat this narrowing procedure to narrow the field of detection further Note Depth i...

Page 27: ...tributor for details Warranty does not cover shipping costs According to FCC part 15 21 Changes or Modifications made to this device not expressly approved by the party responsible for compliance could void the users authority to operate this equipment This device complies with FCC Part 15 Subpart B Section 15 109 Class B Copyright 2015 by First Texas Products L L C All rights reserved including t...

Page 28: ...dle and a rubberized hand grip Includes a powerful super magnet attached to the head to quickly discriminate iron targets and magnetic hot rocks GOLDPICK Replacement Accessory Searchcoils 11 Biaxial Standard Coil 11COIL TEK 5 Biaxial Accessory Coil 5COIL TEK 10 Elliptical Concentric Coil 10COIL TEK 10 Biaxial Accessory Coil 10COILDD TEK Coil Covers Specially made to protect your coil from abrasion...

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Omega 8500, Owner'S Manual

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