Sensitivity Control - Minelab Eureka Gold Instruction Manual

Page 3 The Minelab Eureka Gold
In the graphs (on page 13) the dotted line represents the level at which the
audio output becomes audible; signals cannot be heard if they are below
that dotted line. When the threshold is set correctly it is just above being
audible and even small variations in the sound level will be heard. If the
threshold level is set too high, then small variations in audio signal might
not be discernible above the threshold level. If the threshold level is set too
low there is no audible background audio signal and small target signals
will not go above the threshold of audibility.
5.3

Sensitivity Control

The Sensitivity Control affects the strength of all signals, small shallow
targets, large deep targets, mineralisation and other interferences. The
Sensitivity Control also affects the level of sound produced by the detector
for a particular target. However, unlike the Volume Control, it affects both
small and large targets alike.
It is recommended that in most ground the Sensitivity Control should be
set to the maximum sensitivity. This is obtained by turning the control fully
clockwise.
Figure 15 – Sensitivity Control
(The audio output is amplified according to the Sensitivity setting)
The Sensitivity Control should be decreased only in case of electrical
interference or poor ground conditions such as heavy mineralisation or
heavy ironstone. The sensitivity should be decreased just enough to make
the detector usable.