Omega 8000 User Manual

METAL DETECTOR

8000

OWNER’S MANUAL

If you do not have prior experience with a metal detector, we strongly

recommend that you:

1) Adjust the Sensitivity to a low setting in the event of false signals.

Always begin use at a

reduced sensitivity level; increase sensitivity only after you have become familiar with the detector.

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 the sensitivity down and keep the search coil away from appliances such as computers, televisions and microwave ovens. If your detector beeps erratically, turn off appliances and lights.

Also keep the search coil away from objects containing metal, such as floors and walls.

3) Use a 9-volt ALKALINE battery only. Do not use Heavy Duty Batteries.

TABLE OF CONTENTS

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

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

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

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

Basic Of Metal Detecting . . . . . . . . . . . . . . . . . . . . . . . . . .9-10

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

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

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

Size and Depth of Buried Objects . . . . . . . . . . . . . . . .10

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

How To Work The Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

MENU Selections

Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Disc / Autotune . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Ground Grab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Number of Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Notch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Ground Balancing . . . . . . . . . . . . . . . . . . . . . . . . . .15-16

Ground Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-18

Audio Target ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Depth and Target Display . . . . . . . . . . . . . . . . . . . .19-20

SearchTechniques . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Target Pinpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Unit Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Code of Ethics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover

TERMINOLOGY

The following terms are used throughout the manual, and are standard terminology among detectorists.

ELIMINATION

Reference to a metal being "eliminated" means that the detector will not emit a tone, nor light up an indicator, when a specified object passes through the coil’s detection field.

DISCRIMINATION

When the detector emits different tones for different types of metals, and when the detector "eliminates" certain metals, we refer to this as the detector "discriminating" among different types of metals. Discrimination is an important feature of professional metal detectors. Discrimination allows the user to ignore trash and otherwise undesirable objects.

RELIC

A relic is an object of interest by reason of its age or its association with the past. Many relics are made of iron, but can also be made of bronze or precious metals.

IRON

Iron is a common, low-grade metal that is an undesirable target in certain metal detecting applications. Examples of undesirable iron 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 buried object. Long-buried metals can appear exactly like the surrounding soil, and can therefore be very hard to isolate from the soil.

PULL-TABS

Discarded pull-tabs from beverage containers are the most bothersome trash items for treasure hunters. They come in many different shapes and sizes. Pull-tabs can be eliminated from detection, but some other valuable objects can have a magnetic signature similar to pull-tabs, and will also be eliminated when discriminating out pull-tabs.

GROUND BALANCE

Ground Balancing is the ability of the detector to ignore, or "see through," the earth’s naturally occurring minerals, and only sound a tone when a metal object is detected. This Detector incorporates proprietary circuitry to eliminate false signals from severe ground conditions

ASSEMBLY

Loc

kin

Col

lar

Loc

kin

Col

lar

Upp

Stem

Cab

Knurled Kno

Bolt

Coi

S-R

Velcro Strap

Vel

cro

Str

Assembly is easy and requires no tools.

1 Loosen both Locking Collars by rotating 100% counterclockwise

●

2 Insert the Upper Stem into the S-Rod and click

●

Silver Button into hole

3 Position the lower stem with the silver button

●

toward the back. Using the bolt and knurled knob, attach the search coil to the lower stem.

4 Press the button on the upper end of the

●

lower stem, and slide the lower stem into the upper stem.

Adjust the stem to a length that lets you maintain a comfortable upright posture, with your arm relaxed at your side, and the search coil parallel to the ground in front of you.

5 Wind the cable securely around the stems.

●

6 Push cable into connector on back of

●

housing. Do not twist the cable or plug. Turn knurled cap nut only. Use minimal finger pressure to start the threads. Do not crossthread. When the cap nut is fully engaged over the threaded connector, give it a very firm turn to make sure that it is very tight. When the cap nut is fully engaged over the threaded connector, the cap nut may not cover all of the threads.

7 Tighten both locking collars.

●

8 Secure the cable with the 2 velcro straps

●

provided, one on the lower stem close to the coil, one on the upper stem, close to the housing. Leave just enough slack in the cable, at the coil end, to be able to rotate the searchcoil a small amount about the bolt. After full assembly and upon first use in the field, check this adjustment. It is very important to keep the cable secure against the stem, especially at high sensitivity, as movement in the cable may cause false signals.

ASSEMBLY

Battery Compartment (back side)

Hand-gr

Nut

Screw

Search Coil Cab

Locking Collar

Upper Stem

Cable Plug

S-Ro

arm

res

Velcro Strap

Velcro Str

Biaxial Searchoil

Hea

dphone

Jac

Arm Strap

Adjusting the Arm Rest

The arm rest may be moved forward or backwards by removing the single screw and nut, and then repositioning the 2-piece arm rest. Users with shorter arms may find the arm rest more comfortable in the forward position. In order to move the arm rest backwards, the plastic plug must be removed from the aluminum tube.

Arm Rest Strap

The strap is provided for your convenience. Some users prefer to use the strap when swing 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.

BATTERIES

A 4-segment battery indicator at the top-left of the display indicates the battery condition.

The detector requires a single 9-volt ALKALINE battery (battery not included).

Do not use ordinary zinc carbon batteries. Do not use “Heavy Duty” batteries.

Rechargeable batteries can also be used. If you wish to use rechargeable batteries, we recommend using a Nickel Metal Hydride rechargeable battery.

The battery compartment is located on the back side of the housing. Slide the battery door to the side and remove it to expose the battery compartment.

BATTERY LIFE

Expect about 20 to 25 hours of life from a 9-volt alkaline battery. Rechargeable batteries provide about 8 hours of usage per charge.

SPEAKER VOLUME AND BATTERY CHARGE

Y ou may notice the speaker volume drop while one battery segment is illuminated. With one segment flashing, low speaker volume will be very apparent. For loudest speaker volume, select 1 or 2 tones under the # OF TONES menu selection.

BATTERY INDICATOR

The 4-segment battery indicator has 3 stages of indication. These indications are accurate for a 9-volt alkaline battery.

Segments Illuminated Battery Voltage

4 -segments more than 8.5 volts 3 -segments more than 7.5 volts 2 -segments more than 6.8 volts 1 -segment flashing more than 6.4 volts

After the 1st segment begins flashing, expect the detector to shut off within 10 minutes.

A rechargeable battery will usually illuminate three to four segments throughout most of its useful charge. But as soon as it drains to the 1-segment level, it will then discharge very rapidly.

QUICK-START DEMONSTRATION

I. Supplies Needed

• a Nail • a Zinc Penny (dated after 1982)

• a Nickel • a Quarter

II. Position the Detector

a. Place the detector on a

table, with the searchcoil hanging over the edge. Or better, have a friend hold the detector, with the searchcoil off the ground.

b. Keep the searchcoil away

from walls, floors, and

metal objects. c. Remove watches, rings, and jewelry. d. Turn off lights or appliances, whose electromagnetic emissions may

cause interference. e. Pivot the searchcoil back.

III. Click on detector with the left knob. Set it at the

12:00 position for this demonstration.

IV. Click the right knob to the lowest Disc

setting

V. Wave each object over the searchcoil.

a. Notice a different tone for each object:

Bas Tone: Nail

Low Tone: Nickle and Zinc Penny

High Tone: Quarter

b. Motion is required.

Objects must be in motion over the searchcoil to be detected in this mode.

VI. Rotate the DISC (right) knob until the word “IRON” disappears from the

screen. Make sure that the word “FOIL” is still illuminated.

VII. Wave the nail over the searchcoil.

a. The nail will not be detected b. The nail has been “discriminated out.”

Quick-Start Demo continued on next page

QUICK-START

VIII. Rotate the DISC knob until the words IRON, FOIL, NICKEL, P-TAB,

S-CAP and ZINC all disappear.

IX. Wave the nickel

a. The nickel will not be detected.

X. Press the NOTCH touchpad on the front panel three times.

The word “NICKEL” will start flashing. Wait until the flashing stops. “NICKEL” will be illuminated.

XI. Wave the Nickel.

a. The nickel is now again detected. b. The nickel has been “notched in.”

XII. Rotate the right knob 100% counterclockwise and click on into AT mode

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 that motion is not required.

A motionless object induces a sound.

b. Notice the single monotone hum. The PINPOINT mode produces

only this single sound, regardless of the type of metal detected.

c. Move the quarter closer to and farther away from the searchcoil.

Notice the changing depth-display values. The 2-digit depth reading

indicates the distance, in inches, away from the searchcoil.

continued

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