Threshold - Minelab Explorer SE Quick Start Manual

24

Threshold

Maximum setting (40)
Current setting (e.g. 13)
Minimum setting (0)
Threshold is the constant background
'hum' produced by the detector.
This control sets the Threshold Volume.
By setting the Threshold Volume to the
correct level for your hearing, Threshold
can highlight the variations in signal
response which often indicate detection
of a target.
The volume of the Threshold is a
personal preference. The correct level
will depend on your hearing and
associated noise such as wind and
machinery.
If the Threshold Volume is high,
accepted targets will be harder to
distinguish above the Threshold 'hum'.
Small target responses will become
difficult to discern as Threshold nears a
maximum setting of 40 when there will
be a persistently loud Threshold 'hum'.
Range: 0 to 40
Factory Preset: 16
If the Threshold Volume is too low, the
slight variation caused by a small or
deep target may not be sufficient to
hear. Adjusting the level to below an
audible level will ensure silent operation
but could mask the audio response to
small targets.
The factory preset Threshold of 16
will usually emit a constant Threshold
hum and is programmed to enable an
audible response to most target signals.
Since everyone's hearing is different, so
Minelab suggests that you set a level
of Threshold that is a very low, but still
audible level for hearing.
Threshold also helps you distinguish
the difference between accepted and
rejected targets. When a rejected
target is detected, the Threshold sound
'blanks' (becomes silent) to indicate that
a rejected target is underneath the coil.
Adjusting Threshold:
Threshold is increased by pressing
the top shift button and decreased by
pressing the bottom shift button on the
right side of the control panel.
A number corresponding to the
Threshold level will appear temporarily
between the two adjustment arrows.
Audible Target Response
Target
Volume
Target #2
Inaudible
Target #1
Audible Level
Threshold
= 0
If the Threshold is set to 0, small target
signals will not produce a signal big enough
to go above the Audible Level.
25
Try experimenting with known targets to
assist in setting Threshold.
The Threshold may need to be adjusted
when connecting and disconnecting the
headphones.
Audible Target Response
Target
Volume
Target #2
Target #1
Threshold
= 14
Audible Level
If the Threshold is set to a positive value,
the detector will produce target signals
and a Threshold sound.