We are now ready to discriminate targets from each other. We will start with the
DISCRIMINATE LEVEL at MIN and the MODE switch in the center or DISC position. Please
notice that the DISCRIMINATE LEVEL knob has words that correspond to the items that are
discriminated out.
All four targets (the iron, nickel, pull tabs and quarter) will respond with a good audio signal at
the MIN setting. Next, we will turn the DISCRIMINATE LEVEL up to IRON. This should be
high enough to knock out the iron target and still get a positive response on the nickel, pull tabs
and quarter. When you are done with the IRON level, turn the DISCRIMINATE LEVEL to the
5¢ setting. This level is high enough to knock out the nickel.
At this time the iron target and the nickel should give no response, while most of the pull tabs
and the quarter will give a solid response. Next, turn the DISCRIMINATE LEVEL knob just
past the TAB marking. At this time most or all of the pull tabs should not give any audio signal.
Only the quarter should give a strong signal. Now roll the DISCRIMINATE LEVEL all the way
to MAX. Notice that the quarter is still responding. The discrimination will not go high enough
to lose most of the silver coins.
This Air Test was designed to show you quickly how your Discriminate Mode works. Each
machine may be a little different from all of the others, so you may want to take some time and
try different targets to find responses of your machine. At a later date, you may want to build a
test garden to test your detector in the field.
Perform Air Test in ALL METAL Mode
Push the MODE switch all the way to the right. It will lock into the ALL METAL position.
Check all of your targets and you will get a positive response from all of them. You may also
want to set the DISCRIMINATE LEVEL knob at various settings and notice that the detector
will still give a positive response. In the ALL METAL Mode, the DISCRIMINATE LEVEL
knob does not change any target signals. Take some time to try all of your targets.
Conclusion
Congratulations, you have just finished the Quickstart for your new Silver µMax detector and in
the process have learned quite a lot about your detector. But experience is the best teacher. I
would recommend that you get out and practice with your detector as much as possible. Any
time spent using your detector will give you valuable experience.
OPERATING TECHNIQUES - FIELD USE
Handling Your Detector
The detector should be held in a position that is comfortable for you as shown in the
"Adjusting
the Pole & Searchcoil"
section in
"Getting Started."
Swing the detector from side to side in
about a three foot arc, overlapping succeeding strokes well. This motion is called a “sweep.” The
