Sensitivity - Minelab X-Terra 705 Instruction Manual

40
ground balance
The X-Terra 705 is capable of operating in
two different types of grounds, magnetic (e.g.
inland parks and goldfields) and conductive
(wet areas of salt water beaches). Ground
mineralisation may cause false target signals
in all environments. Ground Balancing the
detector reduces these ground signals and
enables good targets to be displayed and/or
heard correctly.
Ground balance (Normal)
Ground Balance (Normal) is suitable for most
neutral soils and dry sand use and is operating
when the beach icon is off.
An unbalanced detector in Coin & Treasure
Mode will blank continuously (if a pattern
rejecting –8 is used) or detect –8 continuously
(if a pattern accepting –8 is used).
An unbalanced detector in Prospecting Mode
will produce a continuous 'warbling' sound
that differs from the sharper sound of a real
target signal.
Ground balance (beach)
Ground Balance (Beach) is suitable for salt
water beach use and is operating when the
beach icon is on.
In Ground Balance (Beach) the X-Terra 705 can
Ground Balance any combination of magnetic
and conductive soil (e.g. a mixture of sand, soil
and salt water). However, ferrous and some low
conductivity targets can be balanced out. For
this reason in Ground Balance (Beach), Tracking
should be used only when targets are far apart.
Ground Balancing in highly
mineralised soils is far easier when
using a Double D coil.
Adjusting Ground balance
The Ground Balance setting can be adjusted
in three ways; automatically, manually or
with Tracking.
Auto Ground Balance will generally give a
good Ground Balance setting. This may be
further adjusted manually, using the + and –
buttons.
Press Ground Balance .
Adjust Ground Balance with Auto, Manual or
Track (p. 42).
Press Pinpoint/Detect or Ground
Balance to return to detection.
When detecting on the beach,
adjusting Ground Balance may not give
significant improvements. Try adjusting
Sensitivity and altering Patterns for
best results.
Activating Ground balance (beach)
Press Ground Balance .
Press and hold Ground Balance for three
seconds. The beach umbrella icon will appear
to indicate that Ground Balance (Beach) is
activated.
To de-activate Ground Balance (Beach), press
and hold Ground Balance for three seconds.
The beach umbrella icon will disappear
indicating that Ground Balance (Beach) is de-
activated.
Press Pinpoint/Detect or Ground
Balance to return to detection.
Ground Balance settings affect
both normal detection and Pinpoint
operation.
Adjusting Ground balance
Ground balance (beach)
41
Adjust Ground Balance with
Auto, Manual or Track (p. 42)
Press and hold
Ground Balance
for three seconds
to activate Ground
Balance (Beach)