Interfacion QED-PL2 Owner'S Manual Download Page 26 | Manualshive

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9: SMR (SYNCHRONOUS MAINS REJECTION)

Setting range 1-200

Factory preset at 107

Description

SMR allows adjustment of the cycle time of the detector to precisely
adjust the cancellation of single phase 50Hz mains signals.

•

Adjusting SMR can be used to null out 50Hz mains EMI that is

off frequency.

•

It may also be used to null out other rhythmic EMI sources from
microwave towers, 2/way radio transmissions or similar sources
of disturbance.

YouTube Reference

The SMR YouTube Video is coming soon.

Notes

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Summary of Contents for QED-PL2

Page 1: ...INTERFACION PTY LTD ACN 614 858 990 P O BOX 106 R REDAN VIC 3350 AUSTRALIA QED PL2 OWNERS MANUAL Proudly made in Ballarat Victoria Australia QED image is for illustration purposes only ...

Page 2: ...are an experienced operator you may find the settings to be different to anything you have previously used Whether you are a first timer or an experienced operator your confidence will develop as you master the 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 dete...

Page 3: ...L2 INTRODUCTION 2 CHANGE CONTROL 3 TABLE OF CONTENTS 3 NAVIGATING THE CONTROL INTERFACE 6 START UP 7 MENU OPTIONS 8 FACTORY DEFAULTS 8 QUICK START GUIDE 9 CONTROL COMMANDS 10 MENU CONTROLS 11 1 MANUAL GND BAL MGB 11 Description 11 YouTube Reference 12 Unable to Ground Balance 12 Rechecking Ground Balance whilst detecting 12 YouTube Reference 12 Notes 12 ADVANCED GND BAL MGB TECHNIQUE 13 Descriptio...

Page 4: ...s 17 Large Search Coils 17 Notes 18 3 THRESHOLD A THS A VOLUME 19 Description 19 Adjusting 19 Threshold A 19 YouTube Reference 19 Notes 19 4 GAIN 20 Description 20 Adjusting Gain 20 YouTube Reference 20 Notes 20 5 MODE 21 Description 21 Beach Mode 21 Adjusting Mode 22 Youtube Reference 22 Notes 22 6 SMF STATIC MAGNETIC FIELDS 23 Description 23 Adjusting SMF 23 YouTube Reference 23 Notes 23 7 BATTE...

Page 5: ...YouTube Reference 26 Notes 26 FERRITE EMI SUPPRESSORS 27 SEARCH COIL TYPES 27 ADVANCED SETUP GUIDE 28 HOW TO SEARCH THE GROUND 29 FINE TUNING EXERCISE 30 ADDITIONAL INSTRUCTIONAL VIDEOS 31 Effects of adjusting Gain Threshold A and Threshold B 31 Effects of adjusting Threshold B for selected target size 31 TECHNICAL SPECIFICATIONS 32 MANUFACTURER S WARRANTY 33 NOTES 34 ...

Page 6: ...angle 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 The display is an all lighting conditions 3 digit LED backlit LCD display ...

Page 7: ...he speaker housing Step 4 Scroll through adjustment menu item numbers by pressing either buttons When on the required adjustment menu item number press the button Step 5 INCREASE variable using or DECREASE using Step 6 To return to variable menu press the button Step 7 To turn detector OFF press and hold the button and current adjustment settings will be saved Step 8 To reload Factory Default Sett...

Page 8: ...ous Mains Rejection SMR FACTORY DEFAULTS Setting Range Factory Default Manual Ground Balance 1 200 100 Threshold B Bias 1 99 50 Threshold A Volume 1 90 30 Gain 1 10 1 Mode Gold Detecting in Mineralised Ground 1 15 3 Beach Mode 16 3 Static Magnetic Fields SMF 1 100 50 Battery Displays 5 98v 9 99v Pitch 1 50 25 Synchronous Mains Rejection SMR 1 200 107 ...

Page 9: ...few then refer to the Advanced Setup Guide Step Description Turn the detector ON by performing a Factory Reset Mode Factory Default 3 Ground Balance MGB or AGB THS B Factory Default 50 THS A Start at Factory Default 30 and increase until a slight threshold is heard GAIN Start at Factory Default 1 and increase GAIN as high as prevailing EMI conditions and Ground Type will allow Re Ground Balance MG...

Page 10: ...his YouTube link to view an explanation of the QED Control Panel functions INCREASE OR DECREASE A VARIABLE e g GRD BAL Press the button to increase a variable number Press the button to decrease a variable number TURN THE DETECTOR OFF PRESS and HOLD the button for three seconds Click on this YouTube link to see how to turn the QED off FACTORY RESET Note The factory reset can only be performed with...

Page 11: ...pen the MGB setting Very slowly RAISE and LOWER the search coil up and down from the ground surface approximately 6 inches down to 1 inch above the ground and repeat Take note of what the audio does as the coil is in the DOWNWARD motion o If the audio on the downward motion is a LOW tone pitch then increase the MGB by pressing the button o If the audio on the downward motion is a HIGH tone pitch t...

Page 12: ... of losing some sensitivity on some targets Note Higher Mode settings can reduce the audio response on very small targets Rechecking Ground Balance whilst detecting To recheck the ground balance tilt lift the coil at the end of each left right swing as you are detecting and take note of the audio response If there is no response then continue detecting as the detector is Ground Balanced If there i...

Page 13: ...r rising or falling pitch If the pitch rises toggle the MGB DOWN 4 counts or UP 4 counts if the pitch falls then swing over the patch again If the signal has diminished or has disappeared then don t bother digging it s a ground noise Restore MGB to previous value and continue detecting Notes Tip A real Target will not be balanced out by the 4 method even if going 8 or more to determine the status ...

Page 14: ...number changed o If a minor manual precision adjustment is required use the MGB procedure aided by the above step For minor GB adjustments press and hold the AGB button and bob the coil up and down to the ground When the tone has faded to a minimum the detector will be ground balanced Note Do not hit the search coil with the ground surface as this can produce unexpected results when trying to grou...

Page 15: ...l accentuate rising pitch targets generally a small target When prospecting for fine gold fit a small coil and adjust THRESHOLD B accordingly to suit the coil using a known specimen target Raising THRESHOLD B will accentuate falling pitch targets usually large targets When prospecting for larger specimens fit your selected coil and adjust THRESHOLD B to suit your selected coil Note BIAS can change...

Page 16: ...to create your desired threshold level Locating the Neutral Position is determined by raising and lowering Threshold B and taking note of the numbers as per the following procedure Start by raising THRESHOLD B with the button until the THRESHOLD B starts to get to a tolerable volume level e g 58 Then lower THRESHOLD B with the button until you get the same volume level e g 44 o The above example r...

Page 17: ...will make the QED too sensitive unstable Medium Search Coils Once the neutral position has been located leave THRESHOLD B at the neutral position to achieve a good even target response on both smaller and larger targets in the ground Raise THS A Menu Item 3 to create desired audio threshold volume Large Search Coils Once the neutral position has been located increase THRESHOLD B with the button un...

Page 18: ...18 2 THRESHOLD B THS B BIAS Setting range 1 99 Factory preset at 50 Notes ...

Page 19: ...reshold Note As Threshold A is increased the usable Threshold B range will decrease Note If using headphones then you can keep THS A low and listen to the pitch change as it starts to work at a lower target signal level than volume change The pitch change is unaffected by any setting of THS A Adjusting Threshold A Select Menu Option 3 then press the button to open the Threshold A setting then eith...

Page 20: ...recognize a target in audio check ground balance or reduce GAIN until stable Note Ensure that GAIN is re checked often usually after a Ground Balance as mineralized ground may allow a higher GAIN setting depending on the prevailing ground conditions Adjusting Gain Select Menu Option 4 then press the button to open the GAIN setting then either Increase the GAIN number with the button or Decrease th...

Page 21: ...feedback noises at the cost of losing some smaller targets Note Some coils may require increased MODE if adjusting the DELAY cannot achieve GROUND BALANCE Select the appropriate level of MODE setting reflecting the size of coil to be used the target size soil depth and level of soil mineralization anticipated Use SMALL coils for fine tiny gold in shallow ground with MODE setting 1 to 8 Use medium ...

Page 22: ... button Decrease the MODE setting use the button Note The detector needs to be Ground Balanced after mode has been changed Note Threshold B and other settings should be set after MODE has been configured Note Higher MODE numbers are more susceptible to EMI Youtube Reference Click on this YouTube link to see how to set the Mode Notes ...

Page 23: ...ic Field The bigger the coil and the faster the swing speed the bigger the problem The factory pre set setting of 50 is used to minimize this signal Further if as a result of the ageing of the electronic components the SMF cancellation can be adjusted To adjust SMF use a large coil and swing the coil vertically as when detecting vertical creek banks Adjust SMF up or down to minimize any signal flu...

Page 24: ...ecimal point appears then current settings will be saved Note If the detector shuts off due to low battery then current settings will NOT be automatically saved Further the REMOTE SPEAKER if fitted needs to be turned ON OFF independently The speaker contains 3 AAA batteries that can be replaced after carefully separating the speaker body and speaker base Lithium li ion Battery Care Click on the fo...

Page 25: ...e Adjusting Pitch Select Menu Option 8 then press the button to open the PITCH setting then either Increase the PITCH setting with the button Decrease the PITCH setting use the button Take note of the desired number as Factory Defaults will reset the value to 25 YouTube Reference Click on this YouTube link to see how to set the Pitch Notes ...

Page 26: ...to precisely adjust the cancellation of single phase 50Hz mains signals Adjusting SMR can be used to null out 50Hz mains EMI that is off frequency It may also be used to null out other rhythmic EMI sources from microwave towers 2 way radio transmissions or similar sources of disturbance YouTube Reference The SMR YouTube Video is coming soon Notes ...

Page 27: ...If you require additional ferrites for coils contact the QED supplier distributor SEARCH COIL TYPES The QED detector can be used with most MONO coils but is likely to perform poorly with a DD search coil The typical round MONO coil will produce an inverted cone shaped energy field generally providing greater sensitivity and depth than a standard DD coil An elongated MONO coil however will generall...

Page 28: ...AGB THS B Neutral for all targets lower than Neutral to enhance small target response Neutral for all targets Higher than neutral to enhance large target response THS A Low 30 or less Start at Default 30 and increase to achieve desired threshold GAIN As high as prevailing EMI conditions and Ground Type allow PITCH Adjust to preferred signal response SMR Default 107 Adjust SMR to null out external ...

Page 29: ...lear of the ground Sweep the coil in a wide arc without lifting the coil at the end of each arc Overlap each swing over the previous arc to ensure you do not miss any targets When a target is identified swing the coil over the target in one direction then repeat again at right angles to confirm target and location A good target will produce a clear repeatable signal Dig out your target and remembe...

Page 30: ...o signal volume is as high as tolerable and swing coil over both targets again You will notice that the small target signal will be enhanced when compared with the previous signal response Increase THS B through and past the null point around 56 until the threshold audio signal volume is as high as tolerable and swing coil over both targets again You will notice that the large target signal will b...

Page 31: ...on this YouTube link to see the effects of adjusting Gain Threshold A and Threshold B Effects of adjusting Threshold B for selected target size Click on this YouTube link to see the effects of leaving Threshold B at the Neutral Position and then adjusting Threshold B for small and larger targets ...

Page 32: ...ster Poole Chapman and Howells and more recently the lapsed patent of Dr George Paltoglou and Australian Innovation Patent AU2010101019 The front end blocking circuitry is US Patent No 10 181 720 B1 dated 15 Jan 2019 by Dave Emery and is used under license Click here to read the Dave Emery Patent Average current consumption 450mA voltage limits 6v min to 10v max Audio PWM VCO VCA Digitization meth...

Page 33: ...y The control box boxes Manufacturer s warranty does not cover damage caused by Over or reverse voltage supply Alterations Accident Neglect Abuse Misuse Water ingress or Unauthorised modification service 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 ...

Page 34: ...34 NOTES ...

Page 35: ...35 ...

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