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SOUNDS
Threshold
This is the background ‘buzz’ given
by the detector, to help distinguish
between accepted and rejected targets.
Blanking
When a rejected target is detected, the
Threshold sound ‘blanks’ (becomes
silent) to indicate that a rejected target
is underneath the coil.
Target Response
This is the sound given by the detector
when a target is located and not
rejected.
In Coin & Treasure Mode, a target that
is highly conductive (e.g. a large silver
coin) generally causes a high tone beep
and ferrous targets generally cause a
low tone beep.
In Prospecting Mode, a target signal will
cause an abrupt change in the pitch and
volume of the Threshold sound.
Pinpoint Response
When in Pinpoint, the detector emits
a variable tone, that increases in tone
and volume as the coil gets closer to the
target.
Noise
A random, jittery sound indicates that
the detector is picking up external
interference. Sensitivity or Noise Cancel
should be adjusted.
False Detections
Ground mineralisation can cause sounds
that can be mistaken for target signals.
False detections can be partial, random
beeps (Coin & treasure Mode) or a
continuous ‘warbling’ sound that differs
from the sharper sound of a real target
signal (Prospecting Mode).
Start Up Sequence
When the detector is turned on, there is
a short three-note tune during its start-
up sequence.
Positive Acknowledgement
The detector emits a short beep for
every valid key press.
Negative Acknowledgement
The detector emits a low double beep
to indicate an invalid keypress.
Completed
A three-note tune indicates the
completion of a function (e.g. Auto Noise
Cancel channel calibration).
Patterns Erased / Factory Preset
A six-note tune will announce when
these settings are complete.
Error
A six-note tune will sound to indicate
a detector error (Error Messages, pg. 49).
Overload
If the coil is passed across a large shallow
target or very highly mineralised ground,
the detector might give a repeating
buzzing sound. This indicates that
the target signal is too strong for the
detector to interpret.
Low Battery Signal
When the battery power becomes low,
there will be a short announcement tune
(descending tones) every 60 seconds.
Low Battery Shutdown
A long announcement tune (descending
tones) will sound just before the detector
shuts down.
BATTERY BEHAVIOUR
1.5 V Alkaline
1.2 V NiMH/NiCad
The X-Terra 70 is capable of using
different types of AA batteries:
1.5 V Alkaline
1.5 V Carbon
1.5 V Lithium (non-rechargeable)
1.2 V NiMH (rechargeable)
1.2 V NiCad (rechargeable)
Overvoltage
If the battery voltage is too
high (above 8V), the battery
icon will fl ash and the
detector will shut down.
Full
2 black segments
inside the outline.
Half
1 black segment
inside the outline.
Low
The icon will begin to
fl ash for a period of time
and there will be audio
announcements every 60
seconds before the detector
fi nally shuts down.
Battery Voltage (volts)
Approximate Time in Hours
The use of headphones will extend
battery life.
Rechargeable Lithium Ion batteries
will give a combined voltage above 8 V
and therefore cannot be used with the
X-Terra 70.
When the detector battery is low, the
speaker volume limit will be reduced,
saving battery power and extending
detecting time. The headphone volume
is not affected.
The graph below is a representation of how 1.5 V and 1.2 V batteries may discharge
over time. How the detector is used will affect how long the batteries last for.