Adjusting The Sensitivity - Minelab GPX6000 User Manual

BEYOND DEFAULT SETTINGS
Go beyond the factory default settings to gain even greater control of your GPX 6000�
This section describes how and why you should adjust key detector settings to
optimise your GPX 6000 for specific detecting scenarios�
Sensitivity
Choose the highest stable sensitivity setting for optimum performance, or use the
automatic settings�

Adjusting the Sensitivity

When setting the sensitivity level, find a level that is high enough to hear target signals over typical environmental noise, but
not set so low that targets are not detected� As a guide, there should be some variation in the audio responses, but it should
not sound erratic�
` Always try Noise Cancel
` Generally start with the Mono coil unless you are detecting in areas with known high levels of EMI or conductivity�
1. Set Sensitivity to level 1
2. Increase until false signals occur
3. Reduce by one level
4. Check over ground and adjust as
needed
Sensitivity levels guide
Manual
Low Manual Sensitivity
` Smoother audio
` Some target signals
may not be heard
` Has threshold tone
` Only use if Noise
Cancel and Quick-Trak
do not reduce noise
CONTENTS
(page 13) and Quick-Track (page 9)
High Manual Sensitivity
` Likely to hear more
targets in low-noise
conditions
` Some targets may be
masked by noisy audio
` Has threshold tone
to resolve noise before reducing the sensitivity level�
Reduce the sensitivity to level 1�
Increase the sensitivity until false signals begin to occur�
` If noise is the result of EMI, keep the coil stationary
when adjusting the sensitivity�
` If noise is the result of ground noise, swing the coil
close and parallel to the ground when adjusting the
sensitivity�
Reduce the sensitivity level just enough that the false
signals disappear�
Sweep the coil over a clear patch of ground, and reduce
the sensitivity level further if any ground noise is
encountered�
Auto
Auto
` Provides smoother
audio
` No threshold tone
` Recommended for
most users
8
Auto +
` Use in low EMI and low
ground noise locations
` No threshold tone