Fisher 1236-X2 User Manual
FRL8704810-D
Q U A L I T Y
Fisher detectors are renowned for their quality.
In the Fisher tradition, each detector is hand crafted with pride
P E R F O R M A N C E
Treasure Hunters worldwide rely on Fisher.
Our detectors are durable, dependable, and search deeper..
REPUTATION
Fisher produced the rst patented metal detector in 1931. For
over 70 years, the Fisher logo has been a mark of excellence.
5 - YEAR LIMITED WARRANTY
Fisher believes in the products we produce and backs this belief
with a 5 year limited warranty. Warranty may vary outside of the
United States. See your dealer for details
SERVICE
Fisher is committed to providing you, our valued customer, with
superior service. Each and every instrument is rigidly tested and
carefully inspected during assembly and before shipment. Should
you have any questions or problems, contact:
FISHER RESEARCH LABORATORY
200 West Willmott Road.,
Los Banos, California 93635
Tel 209.826.3292 Fax 209.826.0416
www.sherlab.com email:info@sherlab.com
1236-X2
Operating Manual
Silent, Discriminating Metal Detector
F I S H E R R E S E A R C H L A B O R A T O R Y
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CONTENTS
About Your 1236-X2 ................................................................pg. 3
Condensed Operating Instructions .......................................pg. 6
Setting Up .................................................................................pg. 7
Body or Hipmounting ..............................................................pg. 9
Control Functions .....................................................................pg. 10
Discrimination Points ...............................................................pg. 12
Searching .................................................................................pg. 14
Pinpointing ...............................................................................pg. 16
No-Motion Pinpoint Mode ......................................................pg. 16
Pinpointing in the Motion Search Mode ................................pg. 17
Target Recovery ......................................................................pg. 18
Recovery Tools .........................................................................pg. 18
Operating Tips ..........................................................................pg. 19
False Signals .............................................................................pg. 20
Battery Replacement ..............................................................pg. 22
Maintenance ...........................................................................pg. 23
Treasure Hunter’s Code of Ethics ...........................................pg. 23
Where to Use Your Metal Detector in the U.S ........................pg. 24
Specications ..........................................................................pg. 25
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26
SPECIFICATIONS
NOTES
1. Subject to improvement or modication without
notice.
2. In Search Mode, the 1236-X2 operates under two
modes of discrimination. With the SILENCER off, it
operates in a classic 2nd derivative discrimination
mode that allows all pops, clicks and partial target
responses to be heard for maximum target information.
With the SILENCER on, the 1236-X2 operates in 3rd
derivative SILENCER mode. This is especially useful for
eliminating noise in extremely trashy areas.
3. The Search Mode has a 416 Hz target response. The
Pinpoint Mode has a Voltage Controlled Oscillator
(VCO) target response that responds to the precise
location of a target with increasing volume and
pitch.
4. A slight audio threshold is provided in Search Mode
when the SENSITIVITY control is set to its maximum
setting. This aids in detecting the faintest of target
signals.
5. Approximate.
6. Electro-Static-Insulated to eliminate certain types
of false signals.
7. The transmitter frequency is centered nominally at
5.7 KHz and is user adjustable from 5KHz to 5.9 KHz to
eliminate interference from nearby detectors.
ABOUT YOUR DETECTOR
Your 1236-X2 was designed to do one thing well, provide all
the quality tools necessary to help you nd good, deep targets
in trashy or mineralized soil with minimum hassle. The 1236-X2
does this by providing you a wealth of powerfully, well designed
instrument controls and features that give you maximum exibility
of adjustment to accommodate your unique style of detecting.
These are the controls on your 1236-X2 .
Sensitivity Control: Along with an increase in sensitivity to
nd those deeply buried targets, we’ve provided a versatile
SENSITIVITY control to adjust the sensitivity when searching
near large metallic objects or extremely trashy areas. At the
maximum SENSITIVITY setting a slight amount of audio threshold
is provided so the faintest of target signals can be heard.
Dual Mode Discrimination: The 1236-X2 provides two powerful
modes of discrimination for you to choose as you hunt in
different environments. In both discrimination modes you can
adjust the DISC control to accept certain types of metallic
targets while simultaneously rejecting ground minerals, trash,
and other less conductive metallic targets. With the SILENCER
switch “off” the 1236-X2 operates in a classic 2nd derivative
discrimination mode that allows all pops, clicks, and partial
target responses to be heard for maximum target information.
With the SILENCER switch “on” the 1236-X2 operates in a newly
developed 3rd derivative SILENCER mode, eliminating all
pops, clicks, and partial target responses for a quieter mode
of operation. This mode of discrimination is especially useful for
eliminating excessive pops and clicks heard when searching in
extremely trashy areas.
3
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4
Search Mode Motion Circuitry: In this mode of operation the
motion circuitry in the 1236-X2 responds with a 416 Hz tone as
the search coil is moved over a target. This makes the 1236-X2
less sensitive to soil mineralization and false target responses
associated with the temperature drift and aging of electronic
components.
No-Motion Pinpoint Mode With VCO Audio: At the push of a
button, the all-metal no-motion pinpoint mode kicks in with
VCO (Voltage Controlled Oscillator) audio response for precise
target locating. A located target responds with increasing
volume and pitch. The tone gets louder and higher, so there’s
virtually no doubt when you’re directly over a target.
VOLUME Control: For an extra measure of versatility, we’ve
included a VOLUME control so you can set the audio level to
suit your needs. You’ll no longer have to buy a special headset
with extra controls to adjust the audio level.
FREQUENCY Control: You can vary the transmit frequency of
your 1236-X2 from 5.5 KHz to 5.9 KHz. This control allows you to
eliminate electrical interference from nearby metal detectors. A
must for competition hunting.
User Setpoints And Factory Presets: The SENSITIVITY, VOLUME,
FREQUENCY, and DISC controls all have recommended user
setpoints that are indicated by a red-colored number on each
control’s number dial. These setpoints provide a useful starting
point for the new user. In addition, we’ve included a convenient
factory preset IRON discrimination setting. When the DISC
control is fully rotated counterclockwise to the IRON position,
the 1236-X2 is set to reject common iron trash and nails.
ABOUT YOUR DETECTOR
25
SPECIFICATIONS
Operating Modes
Search (Motion Mode) ........................................VLF 2nd Derivative
2
VLF 3rd Derivattive SILENCER MODE Discrimination
2
Pinpoint (No-Motion Mode) ............................................VLF All Metal
Audio Response3 .................Search Mode ...............................416 Hz
Pinpoint Mode ..............................................................................VCO
Audio Threshold4 ...............................................................................Yes
Volume Control ................................................................................ Yes
Transmitter Frequency
...............................................................5.7 KHz
Length5 ......................Extended 55 inches .......Collapsed 46 inches
Weight
6
........................................................................................... 3 lbs.
Search Coil ..........................Type ................. Concentric, Co-Planar
............................................... Diameter ...................................8 inches
............................................... Shielding ............................... 100%E.S.I. 6
............................................... Interchangeable .............................. Yes
............................................... Waterproof ........................................ Yes
............................................... Cable Length ................................7 feet
Sensitivity Control .............................................................................Yes
Discrimination Control .....................................................................Yes
Frequency Control7 .......................................................................... Yes
Automatic Ground Rejection ........................................................ Yes
Handle Mount ...................................................................................Yes
Hip-Mount Convertible
Built-In Arm Rest & Detector Stand ................................................ Yes
Stereo Headphone Jack .................................................................Yes
Batteries ........................................................................(2) 9V transistor
Battery Life ............Carbon Zinc 20-30 hours .....Alkaline 40-50 hours
CE Compliant For Export
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24
Where To Use Your Metal Detector In The U.S.
National Forest and Federal Lands—Metal detecting is allowed
only by special permit acquired from the federal government.
Each area has a district ofce.
Corps of Engineers, Lakes, Shorelines and Lands—Permission has
been granted only on predisturbed sites, such as beaches and
attached swimming areas. New Corps lakes and lands must be
okayed by the main ofce of the Army Corps of Engineers. Each
area has a district ofce.
State Parks and Lands—Some state parks are open to metal
detecting, but some are not. Always check with the park ranger
before attempting to use your detector.
Bureau of Land Management (BLM) Lands—Some areas are
open for metal detecting, and some are not. Always check with
the district ofce.
City or County Park Lands—Most are open to metal detecting
unless notice is given by a sign or city ordinance. When in
doubt, always check with the city’s Parks and Recreation
Department.
Public School Grounds—Most are open to metal detecting
unless notice is given by a sign, city ordinance, law enforcement
ofcial, or school employee. You should always check with the
school ofce rst.
Privately Owned Lands (Private Property)—Permission required.
And it is always best to have the permission in writing.
Historically Marked Lands or Sites—Metal detecting is not
allowed. Don’t even think about it.
5
Battery Test: A convenient battery test switch has been
incorporated into your 1236-X2 to check the relative strength of
the batteries. Rotating the SENSITIVITY control counterclockwise
to the “BATTERY” position causes the 1236-X2 to give off an
audio tone with the intensity indicating the strength of the
battery. A low or absent audio tone indicates a weak or dead
battery.
Built with the latest high-tech digital and analog surface mount
circuitry, it all adds up to one great state-of-the-art metal
detector with loads of versatile features. Treat it as you would
any ne instrument and you’ll be rewarded with years of quality
service and who knows how many treasures. If you have any
questions, suggestions, or interesting 1236-X2 stories, drop us a
line. In the meantime...
Happy Hunting!
Fisher Research Laboratory
ABOUT YOUR DETECTOR
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