Page 12
The Minelab Musketeer Advantage
Ground Adjust Control
This control allows you to adjust the ground balance of
your
Advantage
in order to compensate for changes in
the level of ground mineralization. At its most counter-
clockwise position this control switches into the “Fix”
position. When in this position the
Advantage
is a fixed
ground balance detector and requires no ground control
adjustment.
If while detecting in this setting the ground mineralization becomes high, the
Advantage
will produce “ground noise” or false signals. To reduce these noises
it will be necessary to switch the detector out of the “Fix” position and manually
adjust the ground balance.
Ground balance can be adjusted in either “Discriminate” mode or “All Metals”
mode when the control toggle switch is in “Ground Adjust Enable” position.
CAUTION
You can not effectively ground balance the
Advantage
whilst in the
“Pinpoint” position. Turning the ground adjust control while in this
position will cause the detector to become erratic.
To ground balance the
Advantage
, raise and lower the search coil
approximately ½ - 6 inches (10 - 150mm) above the ground while listening for
changes in sound. Start by having the “Ground Adjust Control” in its most
clockwise position. Now slowly turn the Ground Adjustment counter-clockwise
while continuing to raise and lower the coil, until the audio response from
mineralization is eliminated.
In areas of extreme mineralization, you may not be able to completely “balance
out” the effects of the ground mineralization. In this case, set the Ground Adjust
control to the position where the sound varies the least as the coil is raised and
lowered and then reduce the level of sensitivity to compensate for the excess
mineralization.
Instruction Manual
Page 13
Discriminate / All Metals Switch
The Discriminate/All metals mode switch is located in
the lower centre of the control panel and is used to select
either “Discriminate” or “All Metals”.
In “Discriminate” mode the Discriminate control is active
and can be adjusted so that
Advantage
can accept or
ignore certain metal objects, as described in the Discriminate Control section. In
this “hunt” mode, the coil must be moving over the ground to detect a target. If
you stop moving the coil when over the target, the signal will “disappear”.
In “All Metals” mode, the Discriminate control has no effect and your
Advantage
will respond in the same way to all types of metal. The “All Metals
/ Ground Adjust Enable” mode is useful when searching for ferrous targets.
“All Metals” mode allows pinpointing of targets in conjunction with the pinpoint
switch. Pinpointing is discussed under “Pinpoint” on page 15 of the manual.
It is recommended to search in “Discriminate” mode to achieve the
best depth.
Discrimination Level Adjust
The Discrimination Level Adjust is located at the bottom right of the control
panel. This control is used when in “Discriminate” mode to set the level of
“discriminate” or “ignore” for unwanted metal targets.
Metal objects fall into two broad categories: ferrous and
non-ferrous.
A magnet can be used to determine if an object is a
ferrous or non-ferrous metal; ferrous metals will be
attracted to the magnet while non-ferrous metals will not.
In “Discriminate” mode, the
Advantage
will discriminate most ferrous objects
and only provide a signal for a non-ferrous object. If the Level Adjust is set to
“1” as shown in Fig 10, page 14 (large ferrous objects may produce short
“pops” or “clicks”). Non-ferrous objects will give a normal “signal beep” and be
“accepted”.
P0559-A
