White’s Electronics Sierra Madre - Manual (Page 10)

10
the AUTO GEB switch to the air position and
hold it there until a “beep” is heard. Immediate-
ly lower the loop to the ground to be searched
and pull the AUTO GEB switch down to the
GND AUTO TRAC position. Hold the loop
steady until another “beep” is heard.
B. GND AUTO TRAC is recommended for
most searching conditions as it automatically
tracks (adjusts) to any changes in the ground.
This continual updating of the ground rejection
setting improves performance.
C. LOCK may be desired in areas which
contain a lot of man-made decomposed iron,
such as rusty iron which will tend to trick the
AUTO TRAC feature (recognizing it as a
mineral rather than a metal).
4. TRIGGER SWITCH: The TRIGGER switch
located on the handle is used for several differ-
ent purposes. The TRIGGER has three possible
positions; “center” which is used for normal
searching, “squeezed and held” which activates a
temporary change in the mode, and “locked for-
ward” which is the same as squeezing and hold-
ing except mode change is locked in.
A. Reset, clear, or retune after control adjust-
ments or pinpointing. Most control adjustments
will cause sections of the electronic circuitry to
become out of sequence. Squeezing and releas-
ing the TRIGGER will reset or clear so that all
the electronic circuitry works in unison. Manual
pinpointing (when the TRIGGER is squeezed
and released while the loop is near a metal)
will narrow the loopʼs detection field. This is
called detuning. The loopʼs detection field will
remain narrow until the TRIGGER is squeezed
and released (while holding the loop away from
any metal). This resets the loopʼs detection field
allowing it to detect its widest possible search
pattern.
B. Changes Mode Squeezing and holding the
TRIGGER or pushing it forward locking it in
place will temporarily activate the all-metal non
motion mode. This is ideal for pinpointing as
the search mode requires some movement of the
loop to respond to metal targets, making
pinpointing difficult for some individuals. Hold-
ing the TRIGGER disengages the stabilizing
motion feature. This mode can only be accessed
by squeezing and holding the TRIGGER or
pushing it forward to lock. Because it lacks the
stability of the standard search mode it is not
recommended to continually search with this
mode accessed. The standard search mode is de-
signed for general searching. This pinpoint
mode is best reserved for pinpointing. Releas-
ing the TRIGGER returns the instrument to the
original mode.
Explanation of Controls
Explanation of Controls, Continued