22
Chapter 4 DFX
™
Basic Adjustments
7. A.C. Sensitivity
Used to select the appropriate sensitivity (degree
that the instrument is responsive to signals) while
being used in the discriminate modes (those which
require movement of the loop).
Select A.C. SENSITIVITY with the ARROW
controls, and press ENTER. Use the ARROW
controls to set the level of sensitivity shown by the
number on the right. Press ENTER.
Sensitivity levels adjust detection depth and also
have a direct effect on detector stability. A.C.
SENSITIVITY levels should be selected carefully
to allow stable, predictable performance. Set a
lower level if the detector behaves erratically.
64
A.C. SENSITIVITY
MIN
MAX
Tip - Preset levels work
well for most conditions.
Reduced levels will
improve stability in difficult
conditions. Increased
levels will improve
detection depth if stability
can be maintained.
Tip-Remember that once
the TRIGGER is
squeezed and released to
go to a search mode, you
can return to the last
adjustment screen used
by pressing either
ARROW control. Settings
from 1 - 85 are availabLE.
8. D.C. Sensitivity
Used to select the sensitivity (degree that the detector
is responsive to signals) while the detector is being
used in non-discriminate (ALL-METAL) modes.
These are modes that do not require movement of the
loop to respond. D.C. SENSITIVITY fine tunes
stability and pinpointing.
Select D.C. SENSITIVITY with the ARROW
controls, and press ENTER. Use ARROW controls to
select the desired D.C. SENSITIVITY level shown by
the number on the right. Press ENTER. D.C.
SENSITIVITY levels should be selected carefully to
allow smooth, stable and predictable operation while
allowing for reasonable pinpointing.
A.C. and D.C. Sensitivity Adjustments are
traditionally the way to alter detection depth and
stability. There are other methods available in the
PRO OPTIONS under PREAMP GAIN.
30
D.C. SENSITIVITY
MIN
MAX
Tip - Typically, lower
D.C. SENSITIVITY
settings pinpoint shallow
targets far better than
high settings. High
settings will however,
produce more pinpointing
(as well as non-
discriminate mode '(ALL-
METAL)' depth).
Pinpointing (TRIGGER
squeezed), MIXED-
MODE, and V.C.O.
AUDIO are dramatically
impacted by the D.C.
SENSITIVITY setting.
Settings from 1 - 60 are
available.