20
Chapter 4 DFX
™
Basic Adjustments
5. Silent Search
The ability of the detector to be operated without
the threshold or background hum that is normally
heard continuously during operation. The
instrument is silent until a target is detected.
Select SILENT SEARCH with the ARROW
controls and use the ENTER control to turn
SILENT SEARCH ON or OFF.
To function, SILENT SEARCH requires AUDIO
DISC ON and MIXED MODE OFF. SILENT
SEARCH "ON" will automatically override both
AUDIO DISC and MIXED MODE menu
selection to perform the silent search function
regardless of your AUDIO DISC and MIXED
MODE selections. See chart on left side of this
page.
In Pro Options the Discriminate feature can be
used to accept all metal targets while using
SILENT SEARCH. It is not possible to achieve a
non-motion searching mode with SILENT
SEARCH ON. When SILENT SEARCH is ON
the all metal pinpointing mode continues to
produce a threshold. This may not be noticed, as
once the pinpoint mode detunes for better target
center locating the threshold is not present.
However, releasing, re-squeezing, and holding the
TRIGGER with the loop at waist level a threshold
will be noted. Press ENTER.
SILENT SEARCH
ON
OFF
TO CHANGE PRESS
ENTER
Tip - A threshold hum is
recommended as it often
fades over rejected
targets providing
information about targets
and ground conditions. If
the constant noise
bothers or distracts you
and reduced AUDIO
THRESHOLD doesn't
help, select SILENT
SEARCH.
AUDIO
DISC
SELECTION
ON
OFF
ON
OFF
ON
OFF
ON
OFF
SILENT
SEARCH
SELECTION
OFF
OFF
ON
ON
OFF
OFF
ON
ON
MIXED
MODE
SELECTION
OFF
OFF
OFF
OFF
ON
ON
ON
ON
RESULT
THRESHOLD
DISCRIMINATION
ALL-METAL
NON-DISCRIMINATION
SILENT SEARCH
DISCRIMINATION
SILENT SEARCH
DISCRIMINATION
MIXED MODE
MIXED MODE
SILENT SEARCH
DISCRIMINATION
SILENT SEARCH
DISCRIMINATION