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12

PINPOINTING

Accurate pinpointing with the M-96 takes some practice but

not much. With a little experience, you should be able to pinpoint

buried targets in just a few seconds.

1. Once the presence of a buried target is

indicated by a sharp increase in the audio signal

and needle movement, continue moving the

search coil from side-to-side across the target area

in a narrower and narrower search pattern.

2.

Stop the search coil over the spot where you receive

the loudest response and highest meter reading.

3. Now move the coil slowly forward and straight

back a couple of times, again stopping over the

strongest response.

4.

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 center of the search coil.

5. For quick and accurate pinpointing of strong

signals, push the RETUNE button momentarily, close

to, but not over, the target area. This will “detune”

the M-96 so that it responds over a smaller area,

making pinpointing of the object easier. “Detuning”

also reduces depth penetration.

CAUTION:

The ultra-slow auto-tune circuitry is constantly retuning the M-

96 just fast enough to counteract any drift caused by humidity,

temperature changes, etc. If the search coil is held for a

prolonged period of time over a target, the M-96 will eventually

“tune out” the target and the signal will fade. A brief negative-

meter response may also result when the coil is moved away

from the target. In either case, the M-96 may be instantly retuned

to the “threshold” level by pushing the RETUNE button while

holding the coil away from the target area.

Summary of Contents for M-Scope M-96

Page 1: ...M 96 Operating Manual Value Pedestal and Box Locator F I S H E R R E S E A R C H L A B O R A T O R Y...

Page 2: ...re pg 4 Setting Up pg 6 Fitting The Detector To the Operator pg 6 Normal Mode pg 7 High Mode pg 8 Control Panel pg 9 On Off Grond Knob pg 9 Mode Knob pg 9 Retune Button pg 9 Headphone Jack pg 10 Searc...

Page 3: ...field utility use The entire VLF Very Low Frequency operation of the M 96 has been reduced to just two control knobs and a pushbutton Adjusting these knobs gives the operator maximum depth while elim...

Page 4: ...Serial 62231 and after have a locking pad at the top and a round lower stem with a stem lock button fitting in one of the holes at two 2 inch intervals on the back side of the upper handle 3 Slip the...

Page 5: ...don t wrap it so tightly that it pulls against the housing or the coil 6 Reconnect the coil cable to the control housing Be careful not to cross thread it and make sure it s snug but hand tighten only...

Page 6: ...es an accessory into the headphone jack if you don t use headphones you can use the built in speaker Remove protective plug and insert the headphone plug to hear target signals Watch the meter and lis...

Page 7: ...a target 13 Keep the search coil parallel to the ground 14 When you get a good repeatable signal in your headphones and on the M 96 meter pinpoint the target by passing the search coil over it both s...

Page 8: ...losest for your best operating length After adjusting the length of the shaft tighten the lock nut with your hand Refer to the photo on page 4 Never use pliers or other mechanical force to tighten thi...

Page 9: ...s and nails will be ignored 1 Hold the search coil 3 feet off the ground and away from any metal objects 2 To test the batteries turn the MODE knob to BAT and turn the GROUND knob to 5 The meter shoul...

Page 10: ...l set the search coil flat on the ground turn the GROUND knob to 4 and push and release the RETUNE button Now raise the coil 12 inches from the ground and repeat steps 4 and 5 making minor adjustments...

Page 11: ...dication that the search coil is close to metal Mode Knob The Mode Knob has three positions HIGH NORMAL and BAT for battery testing Use HIGH sensitivity when searching for smaller and or deeper object...

Page 12: ...slow half circle motion from side to side and with the coil as close to the ground as possible When the M 96 search coil passes over a conductive metallic object it will be indicated by an increase i...

Page 13: ...iform depth penetration 4 Search slowly and systematically Pay attention to where you are going and where you have been 5 During your search the meter reading should remain at about 10 for maximum sen...

Page 14: ...gnal once again Your target should be directly below the center of the search coil 5 For quick and accurate pinpointing of strong signals push the RETUNE button momentarily close to but not over the t...

Page 15: ...he top end of the stem Grasp either side of the M 96 battery compartment by the top and bottom edges Slide the cover about half way off toward the opposite end of the detector Grasp the nylon pull tap...

Page 16: ...quency 450 Hz Power Supply 9V each consists of 12 x 1 5V AA batteries in 2 6 battery packs Power Consumption 9V 13 8 mA 9V 8 mA min 7 5 18 5 mA audio threshold 5 0 mA max Threshold 50 mA max sound Bat...

Page 17: ...15...

Page 18: ...lief with a 2 year limited warranty Warranty may vary out side the United States See your dealer for details S E R V I C E Fisher is committed to providing you our valued customer with superior servic...

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