Electromagnetic Interference; Headphones - Teknetics Eurotek PRO Owner's Manual

DISCRIMINATION SYSTEM
3-Tone System
(continued)
The discrimination system in the Eurotek Pro is unlike systems in other metal
detectors.
• The default DISC setting is 0. When the detector is first powered on, all
targets are detected.
If the user saves different DISC settings (see Memory function, p. 21),
then this may change at power-up.
• As the DISC setting is adjusted, targets with IDs less than or equal to DISC
are eliminated from detection.
This target elimination scheme, common to many detectors, is
applicable to Target-IDs up to 69.
• For DISC settings greater than 69, targets in this range are not eliminated.
Rather, the tone changes from High Tone to V.C.O.
In this range, the DISC setting becomes the V-Break™, Variable
Tone Breakpoint.
• The highest DISC setting possible is 79.
If the DISC setting is 79, then:
- All Target-IDs less than 70 are eliminated from detection
- All Target-IDs between 70 and 79 induce V.C.O. Tones.
- All Target-IDs greater than 79 induce a High Tone.
The Target-ID system and the Audio-ID systems on the Eurotek
independently. Therefore, there may be times when the tones and IDs seem
inconsistent. For example, a very deeply buried target may induce a low tone,
but the signal may be too weak for the visual ID system to determine, with
confidence, a reliable Target-ID number. In this case, the detector may not
register a visual Target-ID, even though the detector emits a tone.
1/4 of Stater, 2 Franc Morlon,
gold, France aluminum
Double Roman
Tournois, Nummus,
copper bronze
16
® Pro operate
Medieval double 50cent Chambre
sol du Commerce
Celtic Potin, Merovingian
mixed metal Triens, gold
THE BASICS OF METAL DETECTING
5. EMI (Electromagnetic Interference)
The searchcoil produces a magnetic field and then detects changes in that
magnetic field caused by the presence of metal objects. This magnetic field
that the detector creates is also susceptible to the electromagnetic energy
produced by other electronic devices. Cell phones, cell phone towers,
power lines, microwave ovens, lighting fixtures, TVs, computers, motors,
etc... all produce EMI which can interfere with the detector and cause it to
beep when no metal is present, and sometimes to beep erratically.
The SENSITIVITY control lets you reduce the strength of this magnetic field,
and therefore lessen its susceptibility to EMI. You may want to operate at
maximum strength, but the presence of EMI may make this impossible, so if
you experience erratic behavior or "false" signals, reduce the sensitivity.
HEADPHONE JACK
Push the tab up and lock into place to
expose the headphone jack.
This detector has a 1/4" headphone jack.
It works with any stereo headphone that
has a 1/4" plug.
When the headphone jack is connected,
speaker volume is disabled.
USING HEADPHONES
Using a detector with headphones
facilitates detection of the weakest
signals and also extends the battery life.
It also allows you to hear subtle changes in the sound more clearly, particularly
if searching in a noisy location. For safety reasons, do not use headphones
near traffic or where other dangers are present. This device is to be used with
interconnecting cables/headphone cables shorter than three meters.
SWIVEL
DOOR
9