Related Manuals for Fisher Research Labs F75LTD
Summary of Contents for Fisher Research Labs F75LTD
- Page 1 Comprehensive Operating Manual & Guide to Metal Detecting SPECIAL EDITION Metal Detector User’s Manual Better performance in High-E.M.I. environments. Even better target separation! M75MBLK Rev. 5 110614...
-
Page 2: Product Features
All rights reserved, including the right to reproduce this book, or parts thereof, in any form. Published by Fisher Research Labs, Inc. ® Fisher is a registered trademark of Fisher Research Labs, Inc. www.fisherlab.com 1465 Henry Brennan Dr., El Paso, TX 79936 • (915) 225-0333 MADE IN U.S.A. - Page 3 Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Table Of Contents Treasure Hunter’s Code of Ethics: Specifications ..........4 •...
-
Page 4: Specifications
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Specifications How Metal Detectors Work Mechanical: S-rod with electronics housing mounted on handgrip, 3-piece Most hobby metal detectors use VLF Induction Balance technology. Here's how they work. breakdown, batteries under elbow, 2-way armrest adjustment —... -
Page 5: Saltwater Hunting
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Detecting Activities (continued) Quick Start Shallow Water Hunting (continued) Use your F75 right out of the box When searching on a beach, it is best to either search in Motion All Metal Mode, or to search with the discrimination level set just high enough to eliminate iron, because the value of beach Assemble the detector (see instructions beginning page 4). -
Page 6: Cache Hunting
Cable Twist the LOCKING COLLAR fully in All Fisher Research Labs searchcoils are waterproof, allowing you to search in shallow water the clockwise direction until it locks. about two feet deep. If searching around water, be careful not to get the electronics housing wet. - Page 7 Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Detecting Activities (continued) Assembly (continued) Gold Prospecting (continued) Adjust the LOWER STEM to a length that lets you maintain a comfortable upright posture, with your arm relaxed at your side, and the SEARCHCOIL parallel to the ground in front of you.
-
Page 8: Gold Prospecting
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Mechanicals Detecting Activities (continued) Relic Hunting (continued) B TTERIES (not included) or documentation, their context will be lost. The F75 requires four AA batteries. These non-rechargeable chemistries may be used: Alkaline, Nickel Oxy-Hydroxide The ground balancing and Fe bar graph features of the F75 can be used to map the soils... -
Page 9: Relic Hunting
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Mechanicals (continued) Detecting Activities (continued) The LCD screen shows battery condition on the right. Relic Hunting RMREST Relic hunting is searching for historical artifacts. The most common desired objects are battlefield debris, coins, jewelry, harness hardware, The armrest WIDTH and POSITION are both metal buttons, trade tokens, metal toys, household items, and tools... -
Page 10: Detecting Activities
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Introduction to the Fisher F 75 Detecting Activities Coinshooting HIGH PERFORMANCE The F75 is a multi-purpose high-performance computerized metal detector. It has the high sensitivity and ground balancing control needed for professional gold prospecting, the discrimination responsiveness needed for serious relic hunting Coinshooting is searching for coins, usually in places like parks, schoolyards, church under difficult conditions, and visual Target-ID considered essential in searching for coins. - Page 11 Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Search Techniques (continued) Controls Tips on ground balancing DUAL FUNCTION MENU BUTTON When the F75 first turns on, the ground balance setting is preset to 90. This will give a positive response on nearly all soils.
-
Page 12: Hot Rocks
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Controls (continued) Search Techniques (continued) The F75 has two controls on the front panel, MENU and SETTINGS. HOT ROCKS MENU Pushbutton (Red button on right of the front panel) A hot rock is a rock which causes the metal detector to sound off because the rock contains iron minerals. -
Page 13: The Menu System
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Search Techniques (continued) The Menu System NUISANCE BURIED OBJECTS The entire menu is printed on the LCD display. The display highlights the mode and settings In some areas there is a lot of metallic trash which produces weak signals. -
Page 14: Ground Balancing
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Ground Balancing Search Techniques (continued) What is Ground Balancing? Estimating Target-ID All soils contain minerals. Signals from ground minerals are often tens or hundreds of times as strong as the signal from a buried metal object. - Page 15 Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Search Techniques (continued) Ground Balancing (continued) The range of ground balance settings indicated on the display range from 0 to 99; however, Position the searchcoil an inch or two (2.5-5cm) above the ground, and to the side of the each displayed number spans 5 detent steps on the settings knob.
- Page 16 Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Ground Balancing (continued) Search Techniques (continued) depending on which direction the adjustment is off. The F75’s other processes have a reputation for lightning-fast response over targets, with the result that the duration of the sound over a good target can be very short, especially in a POSITIVE RESPONSE trashy area.
-
Page 17: Search Techniques
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Search Techniques Motion All Metal Mode Sweeping Searchcoil (this does not The Motion All Metal Mode is more sensitive and offers better feel than the Discrimination apply to Pinpointing with the trigger Mode, and is used to find all metal objects present in the ground. -
Page 18: Static All Metal Mode
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Static All Metal Mode Capabilities And Limitations (continued) STEEL BOTTLE CAPS & FLAT IRON TRASH This mode is useful for finding large, deep objects, i.e. larger than a coin and deeper than 12 Modern motion-type Target-ID metal detectors usually have difficulty consistently identifying inches (30cm). -
Page 19: Discrimination Mode
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Capabilities And Limitations (continued) Discrimination Mode GROUND BALANCING The Discrimination Mode is used to eliminate trash metal objects from detection, e.g. nails, To achieve maximum depth in any detection mode, as well as when using the PinPoint aluminum foil, or pull-tabs. -
Page 20: Capabilities And Limitations
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Discrimination Mode (continued) Capabilities And Limitations Notch DEPTH Unlike Discrimination Level, which eliminates all targets from the left of the scale to the right, The F75 can detect U.S. -
Page 21: Frequency Shifting
Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Frequency Shifting Discrimination Mode (continued) Using DISC LEVEL in conjunction with NOTCH gives you a great deal of flexibility in deciding One disadvantage of a highly sensitive metal detector is its susceptibility to electrical which values to include or exclude from detection. - Page 22 Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting Discrimination Mode (continued) LCD Visual Display (continued) FOUR DIFFERENT AUDIO TONES This selection is similar to 3, but with a fourth medium- BATTERY CONDITION INDICATOR high tone for targets in the numeric range of 53 to 65.
- Page 23 Comprehensive Operating Manual & Guide to Metal Detecting Comprehensive Operating Manual & Guide to Metal Detecting LCD Visual Display (continued) Discrimination Mode (continued) CL: CACHE LOCATING PROCESS Since different metal objects can produce similar signals, and since minerals in the soil can This process is an enhanced sensitivity, slow-speed, version of the dE (default) process.
-
Page 24: Pinpoint Feature
"zinc penny". The LCD screen will then holes you will dig. Fisher Research Labs offers a robust and inexpensive device designed for illuminate the block above “ZINC”...
Need help?
Do you have a question about the F75LTD and is the answer not in the manual?
Questions and answers