Fisher Labs Gold Bug Pro - User Manual

OWNER’S MANUAL
If you do not have prior experience with a metal
detector, we strongly recommend that
you:
1) Adjust the Gain to a
low setting in the
event of false
signals. Always
begin use at a reduced
Gain level; increase Gain
only after you have
become familiar with the detector.
2) Do not use indoors. This detector is for
outdoor use only. Many household
appliances emit electromagnetic energy,
which can interfere with the detector. If
conducting an indoor demonstration, turn
the Gain down and keep the searchcoil
away from appliances such as computers,
televisions and microwave ovens. If your
detector beeps erratically, turn off
appliances and lights.
Also keep the searchcoil away from
objects containing metal, such as
floors and walls.
3) Use a 9-volt ALKALINE battery only.
Do not use Heavy Duty Batteries.

Fisher Labs Gold Bug Pro Specifications

General

Operating Frequency	19 kHz
Discrimination	Adjustable
Pinpoint Mode	Yes
Sensitivity Adjustment	Yes
Threshold Adjustment	Yes
Type	VLF
Weight	2.5 lbs
Search Modes	All Metal, Discrimination
Ground Balance	Automatic and Manual
Audio Output	Speaker / Headphone
Search Coil	5"
Audio Tone ID	Yes
Length	Adjustable from 42" to 51"
Waterproof	Search coil only
Battery Life	20-30 hours
Warranty	5 Year Limited

Summary

Detector Assembly Guide

Battery Information

Basics of Metal Detecting

Understanding Ground Minerals

Key Metal Detecting Concepts

Managing Electromagnetic Interference (EMI)

Detector Controls Overview

Powering Up and Gain Adjustment

Gain and Sensitivity Control

Explains how the Gain knob adjusts sensitivity in DISC and ALL-METAL modes.

Mode Selection and Threshold Control

How to select modes and adjust the Threshold control.

GG;Pinpoint and +;- Button Functions

Details the dual functions of GG/Pinpoint and +/- buttons.

Detailed Control Panel Functions

Off;On and Gain Settings

Explains powering on/off and adjusting the Gain control.

Gain and Threshold Explained

Defines the role of Gain in signal strength and Threshold in audio level.

Control Panel Operations

Discrimination and All-Metal Modes

How to switch between modes and adjust Threshold.

Ground Grab and Pinpoint Button

Detailed functions of the GG/Pinpoint touchpad button.

Adjusting Discrimination and Ground Balance

Explains the function of the +/- buttons for Disc Level and Ground Balance.

Operating in All-Metal Mode

Performing Ground Grab (GG)

Step-by-step procedure for automatic ground balancing.

Setting Controls for All-Metal Mode

Guidance on setting Gain and Threshold for optimal performance.

All-Metal Mode Display and Targets

Reading the All-Metal Display

Explains display elements like Fe3O4, GND PHASE, and GND BAL.

Understanding the Target Scale

Operating in Discrimination Mode

Setting Controls for Discrimination

Guidance on setting Gain and other controls for discrimination.

Adjusting Discrimination Level

How to use the + button to increase and - to decrease Disc Level.

Discrimination Mode Display and Signals

Using Pinpoint in Discrimination

How to use the Pinpoint feature to locate targets in DISC mode.

Reading Target ID and Display

Explains the 2-digit Target ID and how it relates to target identification.

Discrimination Control Details

Tone Identification and Target Elimination

Ground Balancing Procedure

What and Why Ground Balance?

Explains the purpose and necessity of ground balancing.

Automatic Ground Balance Steps

Step-by-step instructions for performing automatic ground balancing.

Understanding Ground Conditions

Ground Mineralization Data

Manual Ground Balance and Responses

Manual Ground Balance Adjustment

Guide to manually fine-tuning the ground balance setting.

Positive and Negative Responses

Describes how incorrect ground balance affects detector responses.

Ground Balancing Technical Information

Fe3 O4 Bargraph Explanation

Explains the Fe3O4 bargraph's indication of mineralization amount.

Target Display and Audio Feedback

Depth Indicator Function

Audio Feedback Types

Target Identification and Readout

2-Digit Target Indicator Guide

Common Target Readout Values

Gold Prospecting Techniques

Tips for Gold Prospecting

Identifying and Handling Hot Rocks

Negative Hot Rocks

Positive Hot Rocks

Electrical Interference (EMI) Management

Symptoms of Electrical Interference

Common EMI Sources

Coping with EMI Using Controls

Effective Search Techniques

Target Verification Methods

Pinpointing in Discrimination Mode

Target Pinpointing Procedures

Basic Pinpointing Steps

Narrowing Down Target Location