Stabilizer - Minelab GPX 5000 Instruction Manual

Stabilizer

66
GPX 5000 Range
GPX 4800 Range
Factory Preset
Tip: By turning the stabilizer
control close to minimum
(<3) the threshold will be
very stable, but you will
lose a lot of sensitivity to
smaller targets. This can be
a desirable feature in certain
scenarios, such as looking for
large nuggets in a high-trash
area, or using the GPX Series
to search for coins or treasure.
We recommend the best order
for setting these controls are:
1 Select an appropriate
Search Mode.
2 Select the desired
Audio Type.
3 Adjust Rx Gain until
the threshold starts to
break up.
4 Adjust Stabilizer to smooth
out the threshold.
1–20
1–10
10 (GPX 5000), 5 (GPX 4800)
The Stabilizer function controls the point at which faint
variations in the Threshold begin to be heard. These faint
variations can either be ambient noise or faint target signals.
As you increase the Stabilizer control faint signals will
become louder but the noise level will also increase. This
may potentially hide a desirable target signal. The Stabilizer
allows you to mask faint variations, to provide a perfectly
stable Threshold, improving your ability to identify faint
target signals.
The Stabilizer is best left in the Factory Preset position
until the soil conditions are determined. Once the Rx Gain
level has been set for the local conditions, and other audio
settings have been selected, the Stabilizer can then be used
to fine tune the Threshold stability.
To find the optimal position of the Stabilizer ensure the coil
is being swept across the ground. One number below the
point at which the Threshold begins to chatter is generally
the best setting.
The effect of the Stabilizer could be seen as having a
similar effect to that of the Rx Gain control. However, the
Stabilizer affects the audio processing only and does not
change the Receive (Rx) signal, so it should be used as a
final stage fine tune.
After making any adjustment to the Stabilizer, if the ground
conditions change or you wish to change coils, you may
need to reset the Rx Gain. Before doing so, return the
Stabilizer to the Factory Preset setting. This will ensure
you select the most appropriate Rx Gain level to suit the
conditions and then you can fine tune the Stabilizer.
Note: Regardless of which Audio Type is selected, the optimal
setting of the Stabilizer is one number below the point where
the Threshold begins to chatter.