Controls; Threshold; Sensitivity - White's BeachHunter 300 User Manual

Ch4 BeachHunter 300 Controls

Controls

6

Threshold

The THRESHOLD knob turns the instrument
ON/OFF and adjusts the steady background hum or
"threshold" that should be heard continually during
use. The ideal setting is the softest you can hear.
If threshold is not desired, turn the THRESHOLD
control just slightly counterclockwise to silence.
Although some performance may be compromised,
respectable results can still be achieved.
Turn the Threshold fully counterclockwise OFF
when not using the BeachHunter 300 (For pro-
longed periods of storage of two weeks or more,
PRESET
remove the battery holder from the instrument.)
POSITION

Sensitivity

The SENSITIVITY control adjusts the responsive-
ness to metal targets as well as the amount of inter-
ference from external electrical sources and ground
peculiarities. It also functions as a battery check by
turning the knob fully counterclockwise to activate
the blue/green LED "coins" indicator light.
In most conditions the "P" (Preset) position is ideal.
If interference becomes apparent (false signals
or instability), reduce the SENSITIVITY control
(counterclockwise) until smooth, stable operation is
restored.
If smooth, stable operation is noted at "P" (Preset),
increasing the SENSITIVITY control (clockwise)
may increase detection depth so long as stable pre-
dictable results can be achieved.
The SENSITIVITY control will also dictate the
sensitivity of the I.D. display. If set too high for the
conditions the display may become unreliable. We
advise reducing the sensitivity control by turning it
slightly counterclockwise to restore accuracy.