Minelab 4901 - 0059 Metal Detector User Manual


 
When Pinpoint is activated,
Tracking Ground Balance
is automatically disabled.
When Pinpoint is deactivated,
Tracking Ground Balance is
automatically re-enabled.
Track
Tracking Ground Balance follows the
changes in ground conditions and constantly
adjusts the Ground Balance while detecting.
As Tracking Ground Balance constantly
updates the Ground Balance automatically,
repeated passes over a target may result in
the detector balancing to the target instead
of the ground, diminishing the target signal.
It is recommended that Tracking Ground
Balance is toggled off when a target is
detected.
Press
TRACK to activate Tracking Ground
Balance.
While Tracking Ground Balance is activated,
the Tracking icon and current Ground
Balance value will be displayed. The setting
scale will also become animated.
To de-activate, press
TRACK again.
Auto
Using the detector in All Metal, find a clear
area of ground without any targets.
Hold the coil parallel and 4” (10 cm) above
the ground. Select Ground Balance. A
constant hum known as the Ground
Balance tone will sound when the coil is
held steady.
ADJUSTING GROUND BALANCE
Manual
Using the detector in All Metal, find a clear
area of ground without any targets.
Hold the coil parallel and 4” (10 cm) above
the ground. Select GROUND BALANCE.
Continuously lower and raise the coil over
the ground and listen to the Ground Balance
tone. Try to lower the coil as close to the
ground as possible without touching it.
High
Minimum
Sound
Auto
4” (10 cm)
Press MODE AUTO to activate Automatic
Ground Balance, and begin to continuously
lower and raise the coil over the ground.
The letters AU will appear and the menu
scale segments will be animated as a
progress bar. The detector will automatically
select a Ground Balance setting.
Low
43
42
If the tone is low, increase the Ground
Balance setting using
+, if the tone
is high, decrease the setting using
.
Aim for a minimum volume and the
transition between a low tone and a
high tone. The menu scale and Numeric
ID will indicate the chosen setting.
If the detector makes a sound when the
coil goes down, increase the Ground
Balance setting using
+. If the detector
makes a sound when the coil goes up,
decrease the Ground Balance setting
using
. Aim for a minimum volume
variation. The menu scale and numeric
ID will indicate the chosen setting.
If Ground Balance is between
two numbers, select the
lowest number.
Once TRACK is pressed, the detector will
Track very fast for the fi rst three seconds.
The detector will then continue to Track at
a slower speed until Track is de-activated.
If the detector is in Tracking, and then
the Ground Balance is manually
adjusted, Tracking is automatically
de-activated.
Tracking can be activated in
either the detection or the
Ground Balance screen.