Fisher M-SCOPE 1236-X2 - Manual (Page 13)

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1. Once the presence of a buried target is indicated
by the “beep-beep” simply place the coil lightly on
the ground, away from the target area. Push the
PINPOINT button and hold. (At maximum sensitivity
you may hear a faint tone which will disappear as
soon as the coil is raised.)
2. Raise the coil 1/2 inch or so and move it side to
side across the target areas a few times.
3. Stop the search coil over the spot where you
receive the loudest response.
4. Now move the coil slowly forward and back a
couple of times, again stopping over the strongest
response.
5. Move the search coil side to side one more time
and stop over the strongest signal once again. Your
target should be directly below the “Hot Spot” of
the search coil.
6. For quick and accurate pinpointing of strong
signals, place the coil on the ground very close to
the approximate target area and push and hold the
PINPOINT button. You have now “tuned out” most of
the target signal so that when you raise the coil for
pinpointing you will only receive a response directly
over, or very nearly over, the target.
NO-MOTION PINPOINT MODE
The pinpoint mode requires no tuning and no motion to
precisely locate the target. With the Pinpoint push-button
depressed, the 1236-X2 is in an all-metal mode, meaning that
any discrimination setting you might have selected will no
longer apply. The VCO (Voltage Controlled Oscillator) circuitry
indicates the presence of a target by increasing both the
volume and frequency of the audio output. By depressing the
Pinpoint push-button, precise target location is a snap.
PINPOINTING
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DISCRIMINATION POINTS
Figure 6. Typical 1236-X2 audio reponses (with silencer off) for 2-inch deep targets with
search coil sweeping 1 to 2 inches above ground
9. Some objects will cause sharp static or “ticking” when rejected.
This is a perfectly normal response, with the SILENCER switched
OFF. When the SILENCER is switched on, these “ticking” sounds
are eliminated.
10. Large pieces of trash such as beer cans or jar lids may sound
like a good target no matter what you do. With a little practice,
however, you will be able to tell the difference between a large
target and a small coin sized object.
11. The diagram above shows some different target responses
you may expect at different levels of discrimination. Note that as
you increase the discrimination level, you progressively eliminate
more targets, including some good ones, such as nickels and
gold rings.
1236x2 manual-8704810.indd 13 6/9/06 10:08:59 AM