Fisher Labs F 75 User Manual page 20

F75
Comprehensive Operating Manual & Guide to Metal Detecting
Discrimination Mode (continued)
NOTCH
Unlike Discrimination Level, which eliminates all targets from the left of the scale to the right,
NOTCH can eliminate and re-include targets within the scale displayed at the top of the
display. Inclusion or exclusion of target ranges is indicated with a half-crossed or crossed icon.
To demonstrate how to set a notch, follow this instruction at first use.
1. Reset all detector values to default:
a. turn detector off
b. press-and-hold red MENU button and push-forward-and-hold Toggle Switch
c. turn detector on while continuing to hold MENU and Toggle
d. release Menu and Toggle.
2. Press MENU button 4 times to move down to the NOTCH feature
-then rotate the SETTINGS knob to the right until the number 40 appears.
-then press MENU again to accept this notch value.
3. Notice that a thin line appears across the word "TAB" printed on the top of the display.
4. Press MENU again to exit the NOTCH feature.
5. Targets in the first 1/2 of the TAB range (TAB range is from 36 to 55) will be eliminated
from detection.
6. A half-slash will be permanently displayed across the top-left of the word "TAB."
NOTCH allows you to select target ranges equal to 1/2 of each category for inclusion or
exclusion from detection. As you rotate the knob, the target indicator will appear above the
range currently selected. If you set the notch value anywhere within the range, the notch value
will not necessarily stop at this number, notch ranges are fixed as follows:
1. 1-7 iron
2. 8-15 iron
3. 16-20 foil
4. 21-25 foil
5. 26-30 nickel
The following are characteristics of NOTCH programming:
• As you rotate the knob to enter a notch range, the target indicator block at the top
edge of the screen illuminates to show you the range you are in.
• After you have selected a notch, a slash is illuminated over that range, indicating that
all targets within that range (see chart above)
are eliminated from detection.
• When you enter the program to make a
change to the notch settings, you are
changing the status of the notch. If no
slash is illuminated and you press MENU to
set a notch range, you will be notching-out this
range. If a slash was previously illuminated
and you press MENU to set this notch range,
you will be notching-in this range.
• Programming a notch range always
reverses the status of the notch.
20
6. 31-35 nickel
7. 36-45 tab
8. 46-55 tab
9. 56-60 zinc
10. 61-65 zinc