Common Target Value Table - Teknetics Omega 8500 Owner's Manual

DEPTH AND TARGET DISPLAY
Noise can trigger secondary TIDs without a primary, so it is possible to see secondary
Reading the display (cont.)
TID categories light up on the display, without a primary solid TID category.
Secondary Target-IDs don't produce any audio report and cannot be discriminated
out. All the audio reports correspond to the primary TID, and any category that has
been discriminated or 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 fact iron. A bottle cap that reads as nickel or foil due to oxidation or orientation
relative to the coil will most likely have TIDs disagree and several secondary TID
categories will show up. All TIDs can agree and still miss-identify a target. Please
use your skills as the ultimate discriminator.
The iron indicator will react to every iron signal and promptly illuminate in the
IRON INDIC TOR:
presence of iron. This signal is speed dependent, so it may blink rapidly if the coil
is swung too fast. Heavily mineralized soil can also illuminate the Iron Segment
Indicator.
In All Metal Mode, the iron indicator will be faded when over a weak iron signal or
heavily mineralized ground. The iron indicator will be solid over strong iron
targets.
The table below lists some common target values. With experience you will recognize many
types of metal object by their numeric value.
TYPICAL VALUE
10-39
56-57
60-62
62-65
66-72
76-78
82-83
86-87
90-91
94-95
24
continued)
TARGET Readout
POSSIBLE OBJECTS
Iron
Nickel
Pull-Tab
(old style)
Pull-Tab
(new style)
Screw Cap
Zinc Penny
Dime & Copper Cent
Quarter
Half Dollar
Silver Dollar