Fisher Research Labs F70 User Manual page 19

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 crossed icon.
To demonstrate how to set a notch, follow this instruction at first use.
RESET DETECTOR
1. Turn detector off.
2. Press-and-hold both the GROUNDGRAB and
MENU buttons.
3. Turn the detector on, while you are still pressing
the buttons.
4. Detector displays "88".
5. Release the buttons.
6. The detector is reset, and operating in program-1.
Then press MENU button to move down to the
NOTCH selection.
1. Press "+" until the number 40 appears.
Then press MENU again to accept this notch
value. You must press menu to accept the
notch setting. If MENU is not pressed, the
display will time out with a notch programmed.
3. Notice that a slash appears across the word
"TAB" printed on the top of the display.
5. All targets in the of the TAB range (TAB range
is from 36 to 55) will be
eliminated from detection.
The following are characteristics of NOTCH programming:
• As you press + or - 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, by pressing MENU again, a slash is illuminated (or
not) over that range, indicating that all targets within that range are eliminated (or
not) 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 then 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.
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