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QED PL3 Owner's Manual

Pulse induction metal detector
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INTERFACION PTY LTD
ACN: 614 858 990
P O B
106 R, REDAN VIC 3350. AUSTRALIA
OX
QED – PL3
(With the August 2019 QED Software Update)
OWNERS MANUAL
Proudly made in Ballarat, Victoria, Australia
QED image is for illustration purposes only

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Summary of Contents for QED PL3

  • Page 1 INTERFACION PTY LTD ACN: 614 858 990 P O B 106 R, REDAN VIC 3350. AUSTRALIA QED – PL3 (With the August 2019 QED Software Update) OWNERS MANUAL Proudly made in Ballarat, Victoria, Australia QED image is for illustration purposes only...

  • Page 2: Qed Introduction

    QED. Read these instructions carefully to master the QED’s full potential. Be confident to alter and adjust your settings over known targets until you have a working understanding of the detector’s potential and character.

  • Page 3: Table Of Contents

    QED – PL2 OWNERS MANUAL V 7.0 Jan 2020 QED – PL2 OWNERS MANUAL V 7.1 May 2020 QED – PL3 OWNERS MANUAL V 1.0 TABLE OF CONTENTS QED INTRODUCTION ..................2 DOCUMENT CHANGE CONTROL ................3 TABLE OF CONTENTS ..................... 3 NAVIGATING THE CONTROL INTERFACE ...............
  • Page 4 Notes ......................15 AUTO GND BAL (AGB) ..................16 Description ....................16 YouTube Reference ..................16 Notes ......................16 2. THRESHOLD B – (THS-B) (BIAS) ..............17 History of THS-B and NULL ................. 17 Description ....................18 Navigating to Threshold B ................18 YouTube Reference ..................
  • Page 5 HOW TO SEARCH THE GROUND ................35 FINE TUNING EXERCISE ..................36 QED Setup Procedure ..................37 OPTIONAL QED BATTERY EXTENDER ..............40 ADDITIONAL INSTRUCTIONAL VIDEOS ..............42 Effects of adjusting Gain, Threshold A and Threshold B ........ 42 Effects of adjusting Threshold B for selected target size ....... 42 Additional Videos by Goldman ...............
  • Page 6 Checking/adjusting Ground Balance on the fly whilst detecting ....52 Ground Balance Leeway ................. 53 Changing Mode ....................53 Detection Hole ....................53 Low battery voltage ..................54 Charging Your QED ..................55 Charging Your QED battery extender pack............. 55 NOTES ......................... 56...

  • Page 7: Navigating The Control Interface

    Triangle image on the control box is the DECREASE ADJUSTMENT button. Use the button to TOGGLE between menu Item Select and Menu Item Adjustment. Press and hold the button to TURN OFF the detector. Click on this YouTube link to view an explanation of the QED Control Panel functions.

  • Page 8: Start Up

    START UP Note: As the QED is marketed in various configurations, these steps are indicative only. Step 1 Connect a suitable coil. Insert Batteries or connect Battery Pack Step 2 Turn Detector ON by pressing the BUTTON. Step 3 Turn ON the remote SPEAKER pressing the button at side of the speaker housing.

  • Page 9: Menu Options

    MENU OPTIONS 1: Manual Ground Balance 6: Static Magnetic Fields (SMF) 2: Threshold B (Bias) 7: Battery 3: Threshold A (Volume) 8: Pitch 4: Gain 9: Synchronous Mains Rejection (SMR) 5: Mode FACTORY DEFAULTS Setting Range Factory Default Manual Ground Balance 1 - 300 Threshold B (Bias) 1 –...

  • Page 10: Qed Software Updates Changes

    3. In addition, the QED was modified to enable the use of DD Coils. Tip: To determine whether your QED has had the Aug 19 Update applied, check the number of Modes. If a maximum of 11, then the QED has been updated with the Aug 19 update.

  • Page 11: Quick Start Guide

    When you feel confident in using the QED and wish to adjust the various QED settings based on coil size, ground conditions, and target type (small; all; large) to name a few, then refer to the Advanced Setup Guide.

  • Page 12: Control Commands

    Note: The Factory Reset will set your THS-B to 50, which may not be your reset, if THS-A is 30 then the FR THS-B NULL point and as a result the QED may be noisy. If this is has been done correctly.

  • Page 13: Menu Controls

    QED is quiet. It is very important to wait for the audio to ground balance recover during the bobbing motion before continuing to bob the setting, or •...

  • Page 14: Youtube Reference

    YouTube link to see how to Manually Ground Balance (MGB) YouTube Reference the QED. If the Ground Balance (GB) is too difficult to achieve or after setting the Unable to Ground Balance Ground Balance the detector becomes noisy for no apparent reason: 1.

  • Page 15: Notes

    MENU CONTROLS Setting range 1-300 1: MANUAL GND BAL (MGB) Factory preset at 150 Notes ADVANCED GROUND BALANCE (MGB) TECHNIQUE When detecting extremely variable ground there is a method to prevent Description wasting time digging “ground noises”. Tip: 1. While swinging the coil take note of the response to determine either rising or falling pitch.

  • Page 16: Auto Gnd Bal (Agb)

    Note: Do not hit the search coil with the ground surface as this can produce unexpected results when trying to ground balance the detector. Click on this YouTube link to see how to Auto Ground Balance the YouTube Reference QED. Notes...

  • Page 17: Threshold B - (Ths-B) (Bias)

    MGB towards the GB NULL point (and vice versa if the response is a falling (low) pitch) until you get no response from the ground in either direction. The QED is then said to be “ground balanced” (i.e. the ground is NULLED).

  • Page 18: Description

    Setting range 1-99 2. THRESHOLD B – (THS-B) (BIAS) Factory preset at 50 A small target will produce a rising pitch signal and a large target will Description produce a falling pitch signal. THS-B can be used to provide selective ("BIASED") enhancement for either small (rising pitch) or large (falling pitch) targets.

  • Page 19: Youtube Reference

    ~30 or less, a gain of ~4, Note: If THS-A is high then just a change of 1 or 2 on the BIAS will make the with the THS-B set QED too sensitive/unstable. below NULL until a slight threshold is...

  • Page 20: Medium Search Coils

    Setting range 1-99 2. THRESHOLD B – (THS-B) (BIAS) Factory preset at 50 Once the NULL position has been located, leave THRESHOLD B at the Medium Search Coils NULL position to achieve a good even target response on both smaller and larger targets in the ground.

  • Page 21: 3: Threshold A - (Ths-A) (Volume)

    Setting range is 1-90 3: THRESHOLD A – (THS-A) (VOLUME) Factory preset at 50 Threshold A (VOLUME) control in conjunction with the Threshold B Description (BIAS) controls the detector’s audio signal. THS-A increases volume sensitivity THS-A increases the audible threshold for all targets (both targets, meaning rising and falling pitch).

  • Page 22: 4: Gain

    Setting range is 1-10 4: GAIN Factory pre-set at 1 GAIN amplifies target response, ground & mineral noises and EMI. Description GAIN only marginally improves detection depth. For better depth penetration use a larger search coil. Set GAIN as high as possible. If ground becomes noisy or impossible to detect or recognize a target in audio, check ground balance or reduce GAIN until stable.

  • Page 23: 5: Mode

    Setting range is: 1-10 (Gold) 5: MODE 11 (Beach) Factory preset at 3 The MODE function matches the search coil to the detector’s receive Description circuitry. If the mode is increased, the sample delay time is also increased which Tip: decreases detection distance on tiny targets but also improves ground handling ability.

  • Page 24: Adjusting Mode

    Select Menu Option #5, then press the button to open the Adjusting Mode MODE setting, then either: • Increase the MODE setting with the button. • Decrease the MODE setting use the button. Note: The detector needs to be Ground Balanced after mode has been changed.

  • Page 25: 6: Smf (Static Magnetic Fields)

    Setting range is 1-100 6: SMF (STATIC MAGNETIC FIELDS) Factory preset 50 SMF is the interaction of your coil's movement through the Earth's Description Magnetic Field. As a search coil is swung through the Earth’s magnetic field (Static Magnetic Field), an undesirable signal (voltage) is generated in the search coil particularly when detecting vertically up the sides of banks or cuttings.

  • Page 26: 7: Battery

    The QED displays the battery range from ~5.98 - 9.99 Volts It is advised to charge the QED batteries every few The QED is designed to run on a battery voltage of 10 Volts maximum and 6 Volts minimum. months To protect the batteries, the QED will automatically turn off when the battery voltage is below 6 Volts.

  • Page 27: Fitting The Batteries

    7: BATTERY Fitting the Batteries To Fit the Batteries: • Remove the battery compartment cover by pulling outwards, exposing the battery compartment • The battery compartment has a label “top” in each battery slot as per image below. Note: The battery ‘dimple end’ is the top of the battery •...

  • Page 28: Charging Li Ion Batteries

    If it’s been charging for some time and you’re wondering how it’s going, batteries unattended. simply turn your QED on, choose number ‘7 - batt’ and check the battery voltage. If it’s in the 8s it won’t be long before it’s charged.

  • Page 29: 8: Pitch

    Setting range 1-50 8: PITCH Factory preset at 25 The PITCH setting is used to set the Audio Pitch to the Operator’s Description preference. Select Menu Option #8, then press the button to open the Adjusting Pitch PITCH setting, then either: •...

  • Page 30: 9: Smr (Synchronous Mains Rejection)

    Setting range 1-200 9: SMR (SYNCHRONOUS MAINS REJECTION) Factory preset at 107 SMR allows adjustment of the cycle time of the detector to precisely Description adjust the cancellation of single phase 50Hz mains signals. • Adjusting SMR can be used to null out 50Hz mains EMI that is off frequency.

  • Page 31: Ferrite Emi Suppressors

    One ferrite EMI suppressor needs to be fitted to the search coil plug end (the end inserted into the detectors control box) for each coil intended to be used with the detector. Note: If you require additional ferrites for coils, contact the QED supplier/distributor.

  • Page 32: Standard Speaker

    Whenever you charge the QED, then also separately charge the speaker. An audio cable is supplied with the QED and is used to connect the speaker to the QED audio outlet (as shown in the top photo to the left).

  • Page 33: Search Coil Types

    • DD (Double D) coils. The QED works with the above coil types without the need to change any settings, however when changing to a DD coil, you should always check your THS-A; THS-B, Gain and Mode to see whether you can wring out even more performance from the QED.

  • Page 34: Advanced Setup Guide

    ADVANCED SETUP GUIDE The suggested settings below can help you optimise the QED for the type of detecting you are doing at the time, including setup for different target size, ground conditions, EMI, etc. For example, if you are after small gold using a small coil or if you are looking for any gold or looking just for larger targets using a large coil.

  • Page 35: How To Search The Ground

    HOW TO SEARCH THE GROUND Turn the detector ON and GROUND BALANCE, then complete the set-up procedure as shown above. Lower the detector coil to the ground and move slowly forward, swinging the detector from side to side parallel but just clear of the ground. Sweep the coil in a wide arc without lifting the coil at the end of each arc.

  • Page 36: Fine Tuning Exercise

    FINE TUNING EXERCISE • Attach a small coil, 8” diameter or less. An exercise to show how • Obtain a small shotgun pellet or similar size nugget and a $1 Threshold A Australian coin. (Volume) and • Set: Threshold B (Bias) work/interact.

  • Page 37: Qed Setup Procedure

    Walk back to the car to get the mighty QED ready for setup based upon the above determinations.
  • Page 38 2. Raise THS-A to a point where it gets noisy, then back down until quiet 3. Lower THS-B from NULL until the QED gets noisy, then back up until quiet (probably around 1/2 under NULL) 4. Increase Gain until noisy, then back down until quiet (or to a point where you are happy with the threshold) - try to hold the highest possible gain.
  • Page 39 QED Setup Procedure large coils - deep ground 1. Raise THS-A to a point where it gets noisy (very high - 75/85, then back down until quiet - try to hold the highest possible THS-A. 2. Set THS-B to NULL, or above NULL to a point where it gets noisy, then back down until quiet probably around 1/2 above NULL 3.

  • Page 40: Optional Qed Battery Extender

    It includes 4 rechargeable li-Po batteries, the battery holder, the battery holder cover, Velcro and a lead to connect the battery pack to the QED. The extender pack connects to the QED via the QED battery charging (white) connector using the supplied lead. Refer to the photographs below to see the individual components and connectivity details.
  • Page 41 This is ABSOLUTELY ESSENTIAL. Warning: 1. NEVER connect an extender pack with an unknown battery state of charge to the QED. In this scenario, separately charge the extender pack and the QED batteries. Once all batteries are fully charged, then connect the extender pack to the QED.

  • Page 42: Additional Instructional Videos

    (Download the QED Manual from here) https://www.qedmetaldetectors.com.au/qed-pl3 • QED Training YouTube Videos http://www.qedmetaldetectors.com.au/videos Gold Prospecting Forum Request to join. This is where the QED Tip are published. They are not published anywhere else. http:// .com/ australianelectronicgoldprospectingforum YouTube Channel https://www.youtube.com/channel/UCCRTukijBOTackaon2JwImQ/featured Goldman YouTube Channel...

  • Page 43: Technical Specifications

    TECHNICAL SPECIFICATIONS A single channel Pulse Induction metal detector using a differential integrator as the null summation / averaging means to null the ground and static magnetic fields. The Ground Balance method is based on the published papers or lapsed patents of the early pioneers Eric Foster, Poole, Chapman and Howells and more recently the lapsed patent of Dr.

  • Page 44: Manufacturer's Warranty

    Warning: do not open control box as it may contain lead. Coil(s) The coil(s) supplied with the QED at the original purchase date of the QED detector are warranted by the coil manufacturer, not the QED Manufacturer (INTERFACION PTY LTD).

  • Page 45: Qed Tips

    It’s unlikely that you are patch hunting with a small coil, therefore using THS-B below NULL will accentuate the small targets, especially the really small bits that another well known brand and model excels at, but which when set up correctly, the QED and one of the above coils will find the same targets.

  • Page 46: Ths-B And Rising Pitch Targets

    NULL or at NULL. The QED will be less sensitive to rising pitch targets and you may miss the really small ones, but it will not be pinging off as much over hot rocks, etc. creating a more harmonious detecting experience.

  • Page 47: Ths-A And Ths-B Relationship

    The following diagram shows this relationship: This is how the QED can be set up right on the edge of max performance, either looking for small stuff (biased very low) or looking for bigger stuff (high bias), or at NULL using THS-A (high) looking for any targets.

  • Page 48: Qed And Emi

    Ground Balancing with the latest 2019 upgrade For those lucky QED owners with the latest 2019 upgrade, there are two methods to initially determine whether to go up in numbers or down to GB.

  • Page 49: Qed Factory Default Setting

    • if you get into difficulty (e.g. either messed the settings up or it’s very noisy for no reason), or • If you have on purpose set the QED up ‘on the edge’ using most of the settings available to push the limits and you want to quickly get back to some sort of standard for all settings.

  • Page 50: Qed Fuse

    When turning the QED on just press the UP button once quickly. • If there is a fault with the coil the detector will try to shut down immediately but if the button is pressed for too long the fuse will blow.

  • Page 51: Audio Recovery

    • Wet sand: increase MGB from default until quiet • Dry sand: decrease MGB from default until quiet If any other users have used the QED on sand or at the beach, then please add your tips here so that others can benefit from your experience.

  • Page 52: Abnormally Noisy Qed

    There are a number of things to check if your QED appears to be abnormally noisy: • Check and clean your coil plug both on the coil side and the QED side. Any dust in either can cause unwanted noise.

  • Page 53: Ground Balance Leeway

    (i.e. Maryborough, Western Australia), the GB needs to be spot on Rising Pitch Targets In very mild to mild ground, for rising pitch (small) targets use the highest GB number where the QED is still in GB. This will enhance detection distance for rising pitch targets.

  • Page 54: Low Battery Voltage

    Warning if the batteries are left in the QED for more than 3-4 months, they will go flat and will be unrecoverable. To prevent this, remove the fuse if you are going to store the QED for more than a few months.

  • Page 55: Charging Your Qed

    ‘7 - batt’ and check the battery voltage. If it’s in the 8s it won’t be long before it’s charged. Once you have checked the battery voltage, always turn the QED off as it will take longer to charge if left on (as the coil transmit is active).

  • Page 56: Notes

    NOTES...

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