Control Panel; Sensitivity; Discrimination Control - Fisher F2 Operating Manual

CONTROL PANEL

The operating controls are as follows:

SENSITIVITY

These controls change the detector's sensitivity; higher settings enable detection
of deeper targets. At power-up, the detector is pre-set to 75% of maximum
sensitivity. At minimum, the sensitivity is 35% of maximum. With each press of the
or touch pads, the sensitivity level is displayed on the bar graph on the left
of the display. Upon reaching the minimum or maximum sensitivity setting, the
detector will beep twice.
While higher levels of sensitivity enable detection of deeper targets, operation at
high levels of sensitivity make the detector more susceptible to electromagnetic
interference. Higher sensitivity settings can also
lead to false signals in difficult ground conditions.
Use lower sensitivity settings to suppress
interference or false signals from soil minerals
when necessary.
If the detector "Chatters", reduce sensitivity.
DISCRIMIN TION
Press DISCRIMINATION
after pressing
and will increase or decrease the level of discrimination. Each press of
the pads will cause a target icon to appear or disappear on the display. When
an icon is not illuminated, the corresponding target category will be eliminated
from detection. No audible tone nor target-icon will appear when the
searchcoil passes by an object in a category which is not illuminated.The Dime,
+
Qtr, and target categories cannot be eliminated from detection.
While searching, the only target category icons visible are those indicating
detected targets; no more than one is visible at a time while searching. In
order to display the discrimination status, press either the DISC
The first press of either DISC
(eliminated target categories are not displayed — all accepted target
categories are illuminated).
This first key press does not change the
discrimination status; each subsequent DISC
or will change the discrimination
setting, with icons either disappearing or
reappearing.
ND
ND
or at any time (other than immediately
) to adjust the target discrimination level.
or displays the current discrimination status
or key.
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