Omega 8000 - Manual (Page 6)

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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
You 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.
BATTERIES
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DEPTH AND TARGET DISPLAY
READING THE DISPLAY
The Liquid Crystal Display (LCD)
shows the PROBABLE identification
of the targeted metal, as well as the
PROBABLE depth of the target, in
inches.
The detector will normally register a
repeating, unchanging target
identification when a buried target
has been located and identified. If,
upon repeated passes over the same
spot, the target identification reads
inconsistently, the target is probably a
trash item, oxidized metal, or too
deep to be classified accurately. With
practice, you will learn to unearth only
the more repeatable signals.
The segment identifications are
highly accurate when detecting the
objects described on the screen.
However, if you register in a given
category for an unknown buried
object, you could be detecting a
metallic object other than the object
described on the screen, but with the
same metallic signature. Also, the
greater the distance between the
target and the coil, the less accurate
the target identification.
GOLD TARGETS Gold objects will
register on the left side of the LCD
scale. Gold is categorized depending
on its size. The smaller the gold object,
the further to the left it will register.
Small gold items will register
under Iron or Foil.
Medium-sized gold items will
usually register under Nickel or P-Tab.
Large gold items will usually
register under Tab or Zinc.
SILVER TARGETS: Silver objects will
normally register to the right of the
scale, under Dime or Qtr depending
on the size of the object. The larger
the object, the farther to the right it will
register.
IRON: Most iron objects will fall into
the Iron category. Very large iron
objects like a manhole cover will
usually fall into the Qtr category.
NICKEL: Nickels and most newer
pull-tabs will register here.
P-TAB: Older pull-tabs and ring-pulls
from beverage cans usually will
register here. Many gold rings will
also register here.
ZINC: Newer pennies (post-1982) will
register here. Many non-U.S. coins
will also register here.
S-CAP:Screw caps from glass bottles
will register here. Large gold rings, like
a class ring, could also register here.
DIME: Dimes and pre-1982 copper
pennies will register here.
Caution: The target indications are
visual references. Many other types of
metal can fall under any one of these
categories. While the detector will
eliminate or indicate the presence of
most common trash items, it is
impossible to accurately classify ALL
buried objects.