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1. BM in minutes This time must be greater than eight hours 480 minutes for good batteries 5 3 Detecting functions and Testing Connect the probe cable to the round jack at the back of the reading unit Put the probe in a metal free environment for example place the probe on a wooden table or a cardboard box Ideally avoid any kind of metal in a radius of 3 meters On the reading unit press the ON key An initialization message will be displayed then the following display will appear HFR 0 M 1 MAG 0 RT 0 The display shows four values The HFR the memory M the LFR and the RT The Hight Frequency Response HFR can be negative or positive an is always displayed The MAG is the magnetic value and increases negatively if magnetite is present its value is always negative If there is no magnetite the module displays Low Frequency Response LFR insted of MAG The LFR is always positive and it is displayed as long as no magnetite is present The HFR and LFR increase near of a conductor The sulfite contents will be proportional to the HFR LFR ratio On a conductive horizon the sample will be taken where this ratio HFR LFR is the highest The M value is the number of readings recorded in memory The RT is the Ratio value This value is independant of the quantity of present material and indicates the quality of the conductor intrinsic conductivity The RT varies from 0 poor conductor to 100 excellent conducto
2. a 7 2 6 SELECTION OF MENUS esse 7 JWDENTIFICATION 4 606 RTE 8 2 8 DATE AND TIME one sd rater e edet e 9 2 9 THRESHOLD VALUES sise 9 2 10 WAITING TIME AND NEXT MEMORY LOCATION 10 2 11 MEMORY TIME tante ded 11 2 12 die 12 2 13 SOUND CONTROL 12 2 14 5 5 0 13 2 15 GPS AND MAG SYSTEM 13 2 16 REFERENCE SYSTEM OF THE GPS 14 2 17 GRAPH OPTION AND SCROLLING 14 2 18 EVENTS STAMP AND DATA TRANSFER VIA USB 14 BM LINK TO A COMPUTER 7 e 16 3 1 HOW TO TRANSFER DATA FROM THE BM TO A COMPUTER WITH 2 eee poe ye e ee E ev 17 3 2 BYPASS FUNCTION 5 ceste te ter eee nea uec ee rez 20 3 3 GEEAR MEMORY attri Ter EUR DR nantes ERU TER 20 3 4 INT COMMAND etre tee 21 3 5 INTERVAL COMMAND iiie ipee E 21 3 6 START AND ESCAPE COMMANDS siens 21 3 7 GPS REFERENCE SYSTEM cccccceceseseseeeeesesscesesesesesesesesesseeeseees 22 3 8 CONFIGURATION OF THE GPS esse 23 4 CLEAR OR RESET MEMORY mm 24 5 UNIT TEST mes at 25 5 BATTERY CHARGER rece eene 25 5 23 BATTERY TESTING a eerte eir nent 25 5 3 DETEC
3. Tre Beep Mat Trajectory Beep Mat Anomaly diameter size match value Ground EM anomaly from a old geophysical survey Illustration 20 Practical approach with a Beep Mat to localize a conductor By concentrating your efforts on the areas which give the highest values you will not have to dig too much since a high value means that the conductor is closer to the surface Dig until you can identify the source of the anomaly graphite sulfite or even native metal If the conductor seems to be deep dig and check if the readings increase when you insert the probe into the hole If the readings increase it means that you are really getting closer to the conductor Take samples containing sulfides for assays Cu Zn Pb Au Ag Ni etc Repeat these steps for each conductor discovered with the Beep Mat 10 3 Case of Anomalie Forming a Doublet If you find two Beep Mat anomalies along your route and they are in a doublet about 1 meter apart it is possible that you may be dealing with only one veinlet located in the middle rather than with two see 42 illustration 17 anomalies and D Determine the conductor axis then grab the probe and hold it on its side as shown on illustration 14 Its induction axis should therefore be horizontal and perpendicular to the geological orientation Cross the anomalies with the probe thus oriented You might find only one anomaly in the middle That is where you must
4. gt Open 4 You now have Text Import Wizard Step 1 of 3 Select Delimited Select Next nt Importation de texte tape 1 sur 3 po TORT E E M 5 You now have Text Import Wizard Step 2 of 3 Select only Space Select Next f Assistant Importation de texte tape 6 You now have Text Import Wizard Step 3 of 3 At Column Data Format select General Select Finish 7 53 tape 3 sur 3 recess eee E 2 2 It is very important that you save your file now To do so go to the tool bar and select File Save as Save in choose the folder in which you want to save it Save as type Microsoft Excel Workbook xls File name choose the name you want to save and do not forget to put the extension xls at the end of the name Select Save 54
5. MAG or Data transfer with RS232 cable Front view Display Probe connector MADE IN CANADA CONDUCTOR INSTRUMENTATION GDD Conductor and magnetite status light Keyboard Illutration 2 Reading unit The illustration 2 shows the various visible parts of the reading unit Here is a short description of the function of each one The display has two lines of 24 characters Values parameters or messages generated by the Beep Mat can be read on it The conductor status light lights up when any key is pressed or when the LFR or HFR values exceed a specified threshold due to the presence of a conductor The magnetic status light lights up when a reading is stored in the unit or is sent to a remote unit It also lights up when the MAG value exceeds a specified threshold due to the presence of a magnetic material The conductor s alarm hooter low pitched sound is activated when any key is pressed or when the LFR or HFR values exceed a specified threshold The magnetite s alarm hooter high pitched sound is activated when a reading is stored or sent or when the MAG value exceeds a specified threshold The probe connector round jack 10 pins connector links the reading unit to the probe DB15 jack is used for hardware control It allows
6. OPERATING PRINCIPLE The probe contains an inductive coil within its shell When the probe is in normal position on the ground as shown on illustration 12 the induction axis sent by the coil is in vertical position Influence Zone Induction Axis Induction Field lt A made of 4 2 Inductive Lines Secondary Induction Coil Illustration 12 Operating principle The influence zone of its induction field has an average radius called range of about 3 meters This field is similar to the field of a magnet Any conductive or magnetic object within the zone reacts by sending out again a secondary field or induced field which is weaker and has distinctive features The probe reacts on the part of this field that goes through its inductive coil This reaction is then displayed on the reading unit in terms of LFR HFR MAG and Rt values 30 Picture the inductive field as being composed of several induction lines crossing the inductive coil and which density increases towards the center of the coil To illustrate that only a few induction lines are presented on illustration 12 Therefore the greater the number of lines that cross the conductive or magnetic object the higher the displayed values will be For further details refer to chapter 9 Following is the meaning of LFR HFR MAG and Rt values The LFR value Low Frequency Response represents a specific reaction of the low frequency in hertz to the prese
7. see illustration 14 Illustration 14 Beep Mat initialization 8 3 Exploration Cover all grounds that you think may offer an interesting potential of discovery A distinctive signal will indicate that you just passed near a conductor or a magnetite concentration Stop and confirm the signal position Mark that position immediately with flag tape posts or branches 33 Before digging reinitialize the probe in the air then use the Beep Mat to delimit the nearby surface giving abnormal readings Dig at the place where the readings are the highest that is where there seem to be the most sulfides in the rock Make sure that it is not caused by scrap metal such as cans or metal casing near a former drilling site for example Dig with a shovel and examine the samples Try to find the geological cause You can also use the Beep Mat to delimit a conductive or magnetic outcrop Such exploration helps making discoveries but in order to increase chances of success it is recommended to elaborate a strategy and use different tactics This aspect will be treated further in this manual 8 4 Using an ATV or a snowmobile The reading unit allows to connect an external alarm which is clipped to the operator This way it is easier for the operator to take an immediate action An optional 4 6 meters cable allows to pull the Beep Mat probe behind the vehicle up to 20 30 km h While using a snowmobile or it is difficult to visualize nume
8. Mag or GPS display if they are activated Using the unit with an ATV or snowmobile While riding an ATV or a snowmobile it is difficult to hear the conductor or magnetite beeper of the Beep Mat The module allows to connect an external alarm which is clipped to the operator and sounds louder A cable of 4 6 meters allows to pull the BM probe behind the vehicle up to 20 30 km h It is also difficult to visualize numeric readings A GRAPH mode allows the operator to visualize the anomalies To activate the GRAPH mode press the key MENU until the GRAPH option appears Select ON with the arrow keys lt or gt The module returns to the normal operating mode Use the arrow keys lt to change the display In graphic mode a conductive anomaly is shown by a peak on the first line up and a magnetic anomaly by a peak on the second line down The operator can also adjust the speed of the scrolling with the GRAPH TIME option Press the key MENU until the function GRAPH TIME appears on the screen and select the scrolling time with the arrow keys lt or gt It is sometimes difficult to proceed at the initialization of the probe because of the snow or because the probe is at the back of the snowmobile The user can set the initialization time at 30 minutes with the INIT TIME option In this mode there will have 20 beeps instead of 5 This extra time allows the operator to go from the vehicle to the probe and hold it over the
9. be By approaching a conductive block that also 36 contains magnetite the HFR will increase and the MAG will diminish in negative value see illustration 16 case c Beep Mat above a vein BEEP MAT READINGS R 150 10 FR 90 RT 60 a conductive vein FR 425 M 10 lt lt 1 AG 450 RT 096 NC 7 NU N b vein with magnetite only R 250 M 10 N T AG 450 RT 096 Vein conductive vein magnetite Illustration 16 Examples of Beep Mat readings in presence of a a conductor b magnetite c a conductive body containing magnetite 9 2 Profiles on target It is possible to draw a profile of the values displayed by the Beep Mat along a traverse but it is rather suggested to just make an image of it in your mind The two following illustrations show simplified but typical examples Conductor Example 1 37 Illustration 17 Examples of typical profiles of the Beep Mat Here is how to interpret illustration 17 Anomaly is strong and wide and the ratio Rt is high It indicates the presence of a good wide conductor Anomaly B however is weak and uniform and the ratio Rt is low itis a typical sign of the effect of a clayey ground Anomalies C and D of example 2 above These two anomalies forming a doublet are both caused by the effect of an almost vertical veinlet There are no anomaly above the veinlet because the induction lines do not cross it see cha
10. close to zero the effect of clay conductivity being cancelled by the effect of water and the reading unit will probably not beep However if you pass over a log lying on the ground while walking with the probe the probe will leave the ground The effect of water will rapidly diminish but the clay conductivity which slowly diminishes with distance will make the LFR value rise to 80 and the Beep Mat will signal a conductor Remember that on clayey ground the conductor value LFR does not vary because this type of ground is not very conductive 11 4 Salt in the Ground Salt water is highly conductive You might detect conductors caused by salt next to roads on which salt has been spread during winter 44 12 INTERPRETATION OF VALUES The Beep Mat gives a quantitative measure of the apparent conductivity and or the average magnetite content of the underlying rock It also gives an estimate of the intrinsic conductivity thanks to the ratio value Rt 12 1 Magnetite content The magnetite content is measured on a l meter volume under the probe Our testing indicates that a MAG value of 1 000 corresponds to 1 magnetite under the probe which is equivalent to about 1 000 gammas for a volume of a few cubic meters This equivalence exists up to a magnetic value of 20 000 which is equivalent to 20 000 gammas or 20 magnetite 12 2 Apparent conductivity Up to now the apparent conductivity has been calibrated only in the absence
11. less than 2 meters and contains if possible electromagnetic anomalies Use the following published maps Overburden maps M R N in Quebec Quaternary geology maps Geological Survey of Canada Geology maps for outcrops Electromagnetic and magnetic airborne survey maps Topographic maps at 1 20 000 or 1 50 000 Aerial photos Compilations of previous works Prepare a strategic map for your survey similar to the one shown on illustration 19 You can use the overburden map as a starting point Report all pertinent information on that strategic map Mark all outcrops boulders conductors electromagnetic anomalies and or magnetite concentrations not very deep magnetic anomalies known geological directions areas where the overburden is less than two meters thick areas covered with till rather than with river deposits sand clay etc Make sure that the elements coordinates are as precise as possible Finally delimit target areas to be explored and estimate the direction of the survey lines Former prospectors have taught us that lake shores and swamp edges former lakes very often represent favourable areas for prospecting because waves have washed the till and bare rocks are often hidden just under a thin layer of moss UTM 4927086 ui gt 2 UTM 4986080m N Airborne EM Ground EM Overburden anomaly Anomaly of less than 2 je Outcrop meters Illustra
12. probe The values are displayed every second and measured every 1 10 second The unit goes in the two following states Initialization sends 5 long sounds and 2 short On measures 0 1 sec displays I sec If the ON key is kept pressed the display indicates the two following states Standby first sound 3 seconds Off second sound 5 seconds The unit will put itself in the displayed state if you release ON at the precise moment the state is displayed Initialization it is important to place the probe away 224 from any conductive material by lifting it vertically above your head to avoid ground effects Initialize the reading unit Nex by pressing rapidly ON At this time you have 5 seconds to i hold the probe above your head There is one beep every second then at the end two consecutive beeps heard at D this moment the unit is initializing In fact the 5 seconds delay allows to the user to hold the probe with his two hands Afterwards the Mag probe will be initializing and a last beep will be heard If the Mag probe is not connected the unit will automatically shut off the Mag probe MAG SYSTEM OFF The unit adjusts the signal to display values close to zero then it goes in reading mode On to turn on the instrument connect the probe and press the ON key The BM measures the probe reactions and displays values every second However measurements are taken every 1 10 of a second T
13. yan ear the da id 91 next four used to transfer xit commands are specially used when the e 18 fa to monitor the ore grade 19 a conveyor The last two commands are used to modify the GPS coordinates 5 dump l Note that there is no spacing between the typed characters In the space at the right of the 1 ___ you must type the number of readings stored in the memory of the reading unit To know the number of readings stored look on the reading unit display top right 6 Press ENTER on your computer keyboard and it will start downloading the data line by line A message similar to the one shown on illustration 5 should appears on the screen In the example presented on illustration 5 the first line is the name of the survey then the date and the time The second line is the header of the columns GDD gt DUMP 1 12 TESTI 15 06 03 13 36 25 Memory HFR LFR MAG Ratio E Zone Date Time MTF Azim 337 217 10 166021 31N DATE TIME 338 218 11 166021 31 DATE TIME 337 217 11 166021 31 DATE TIME 37 218 0 166021 31N DATE TIME 239 219 2 166021 3IN DATE TIME 239 220 0 166021 31N DATE TIME 140 180 0 166021 31N DATE TIME 140 221 0 166021 31 DATE TIME 341 221 5 166021 31 DATE TIME 340 222 5 166021 31 DATE TIME 142 223 0 166021 31 DATE TIME DUMP MEMORY COMPLETED GDD gt Illustration 5 Typical display following a data dump
14. 0 400 30000 Hz conductivity 1 2 4 8 15 20 40 80 150 200 400 30000 Hz MAG magnetic 1 2 4 8 15 20 40 80 150 200 400 30000 Hz Memor The maximum storage capacity is the memory size divided by 32 One reading takes 32 bytes of memory The readings are recorded on a flash card The size of the card is displayed at the initialization of the unit For a flash card of 256 Mbytes a time interval of 0 1 second will take 9 days to fill the memory in continuous operation The memory address is permanently indicated on the display Clearing memory To clear or reset the memory of the BM while in the field press and hold ON wait until OFF appears on the display then press MEM the message Reset Memory will appear on the display press again MEM and the message Clear Memory will appear Release the ON key and the unit will either reset or clear the memory according to the selection The unit will automatically turn itself off after the execution of the opreration and the memory address will be zero To abort Memory clearing press on MEM see section 4 Reading marker A marker can be used to memorize a Beep Mat or Mag reading with their GPS localization on the field These readings will be identified at the time of the data transfer ito the computer For example the name of the Outcrop 1 could be associated with the readings 1 to 100 Outcrop 2 from 101 to 200 etc To do that press the MENU key until NAME
15. 2 4 VARIATION OF SULFIDES CONDUCTIVITY 46 13 WARRANTY AND REPAIRS me 47 13 1 COPYRIGHTS 47 13 2 WARRANTY 47 13 3 SERVICB 4 duoi aiia 47 APPENDENX 255 49 HOW TO INSTALL THE USB DRIVE ON YOUR COMPUTER ins rtl Uic lote UR 51 HOW TO IMPORT TEXT FILE IN MICROSOFT QUICK USER S GUIDE Using the Beep Mat A Connect the BM probe to the back of the reading unit Press ON until the first sound signal stops then release it Standby will then appear on the display indicating that the probe is connected and warming up If possible it is recommended to warm up the instrument at least half an hour before beginning the survey It is also suggested to keep the BM probe at the external temperature B To begin the survey place the probe away from any conductive material by lifting it vertically above your head so as to avoid ground effects Initialize the reading unit by pressing rapidly ON You then have 5 seconds to take the probe above your head After the 5 seconds delay the probe will be initializing C The instrument will signal every 15 minutes by a repetitive beep that it needs to be reinitialized The following message will appear on the diplay Please Initialize The reinitialization procedure is done in order to achieve maximum efficiency Repeat step B before continuing the survey It is nec
16. A WILL NOT BE LOST CONFIRM WITH 9999 Illustration 6 Memory clearing of the BM The confirmation 0000 feeds all the memory space with zero The memory address is shown on the BM display and it will increase up to 8 093 750 then it will be reset to zero This operation takes 25 minutes to be executed The data will be lost A message similar to the one shown on illustration 7 should appears on the screen 0000 PLEASE WAIT 15 MINUTES To abort press the ESC key on computer or MEM key on BM CLEAR MEMORY COMPLETED GDD gt 21 Illustration 7 Confirmation with 0000 The confirmation 9999 does not really clear the memory but reset the memory address to zero The data will not be lost until next readings are stored The next readings stored will overwrite the previous readings A message similar to the one shown on illustration 8 should appears on the screen 9999 RESET MEMORY DONE GDD gt Illustration 8 Confirmation with 9999 If you are not using a computer press and hold the ON and MEM keys simultaneously on the BM reading unit This will have the same effect of the 9999 confirmation see section 4 NOTE It is recommended to confirm with 9999 The data are not lost until next readings are stored and data can be downloaded to a computer with the bypass command 3 4 Init Command The initialization command is used to initialize the probe when the BM is monitoring a conveyor To do so
17. FR is always displayed The Low frequency LFR is displayed as long as no magnetite is present otherwise the unit displays MAG instead of LFR MAG is the magnetic value relative susceptibility and decreases in presence of magnetite or fine ore granulation magnetic content A reading of 1000 corresponds aproximatively to 196 of magnetite Rt is unaffected by the amount of conductive material intrinsic conductivity The Rt qualifies the conductor from 0 96 poor conductor to 100 excellent conductor conductor quality The Rt is calculated only if no magnetite is present For HFR below 10 Hz the Rt value is not precise enough and Rt 0 will be displayed Threshold values The default threshold values for the BM when you first turn it on are LFR 2 Hz HFR 4 Hz and MAG 400 Hz To change those settings press the MENU key until the desired parameters appears then press the arrows key 1 lt and to increase and decrease the value of each parameters If at any time you become confused with those values just turn the instrument off then on again to reset all default values These parameters should not be changed unless you are very experimented Be aware that a small change of these threshold values reduces dramatically the depth of detection of the Beep Mat The operating parameters of the BM as well as their thresholds bold character Parameters Threshold LFR conductivity 1 2 4 8 15 20 40 80 150 20
18. FR is at least 10 and if no magnetite is present MAG 0 Ratio Rt en fonction de la conductivit m Mesure Interpol Cond Mho m Ratio RT in fonction of the conductivity Conductivity Ratio 96 Mhos m 0 0 00 10 0 40 20 2 00 30 4 00 40 8 00 50 13 00 60 25 64 70 57 79 80 174 02 90 1105 38 95 6951 18 100 The values bold character are interpolated Please take note that the measure of the conductivity is good only if there isn t any magnetite like in a MaxMin survey 46 12 4 Variation of Sulfides Conductivity As mentioned before galena and compact massive pyrite are not always conductive One does not know why these variations exist but since these sulfides are semiconductors it could depend on the impurities incorporated in the crystals structure just as for transistors Fortunately for the Beep Mat and prospectors pyrite veinlets which are often present in gold bearing quartz veins are generally good conductors This has been noticed in particular in gold bearing quartz veins that do not react to any other geophysical instrument and that can be discovered under moss only by the Beep Mat or a trench 47 13 WARRANTY AND REPAIRS 13 1 Copyrights Considering GDD s interest in promoting the Beep Mat any person interested in duplicating this manual is authorized to do so 13 2 Warranty The BM is covered by a one year warranty on parts and labour The w
19. IN THE FIELD Record to photocopy for field work http www gdd ca it chantillon Sample Projet Project Date Date Op rateur s Operator s LOCALISATION AVEC GPS LOCALIZATION BY GPS 83 jJ EST EAST m NAD J 27 NORD NORTH m Zone __ LECTURES DU BM BM READINGS HFR LFR MAG RATIO Sur la neige On top of snow Sol original On the surface e Sur le roc On the conductor Profondeur conducteur m terre m neige Depth cond buried m Soil m snow Dimension conducteur m long X m large Size of conductor m logX X m wide Site chantillonn Erratique J Affleurement Site sampled Boulder Outcrop Sifor de trous Longueur totale m If drilled ofholes_____ Total length __ Comment chantillonn cliquez sur la case appropri e Type of sample tick one appropriate square 1 au marteau al atoire choisi hammered grab 2 dynamite al atoire choisi g blasted random grab 3 poussi res de forages drill cuttings 1 Si affleurement lit Azimut Plong e If outcrop layered Azimuth Dip Description du site et de la g ologie Site and geology description Preface With the Beep Mat you can drastically reduce the cost of sampling and assaying the numerous near surface conductors detected by airborne surveys in the many areas where the overburden is shallow The Beep
20. Mat has also been very successful in discovering new floats of ore and in the follow up of conductive floats of ore to their source Finally the Beep Mat has discovered rich showings of gold and base metals that had not responded to airborne EM and even to any geophysical methods as it can detect even small veinlets in an otherwise non conductive body Under the moss the Beep Mat also detects conductive and magnetic boulders It is therefore possible to map the scattering of a trail of floats and find its source Moreover the Beep Mat is the only instrument capable of detecting sulfide veinlets in suboutcropping ores that would otherwise respond weakly or not at all to geophysics For example the Beep Mat detected small chalcopyrite and pyrite veinlets in suboutcropping ores of Silidor and New Pascalis mines Similar mines could be inexpensively discovered by a prospector dragging a Beep Mat in the woods and sampling every conductive vein detected Not only is the Beep Mat a new tool for prospecting but it is also a whole new way of looking at prospecting GDD is convinced that the large scale use of Beep Mats will bring new life to exploration of base and precious metals throughout Canada just as the large scale use of the scintillometer did for uranium exploration in Saskatchewan 1 INTRODUCTION This manual is intented for geologists and prospectors It concerns the Beep Mat model BM8 However the general theory of the Beep Mat
21. Note the following points The RT in the filed is 0 when LFR MAG value is negative presence of a magnetic body Note that when is under 10 RT value is not precise enough and RT 0 is displayed The default GPS coordinates are transfered in UTM WGS 84 sytem The GPS was not activated since the latitude and longitude are 0 0 0 indicated by 0 166021 31N in UTM Date and time given by the GPS wasn t measured on this example In latest version the date and time of the reading unit RTC are displayed The Mag sensor was not connected the total field MTF and azimut are zero 20 7 the transfer is over go in the tool bar and select Transfer gt Capture Text Stop 8 Close the window Yes 9 You can now unplug the connectors from the BM reading unit 10 You are now ready to work on your file TXT ASCII format It is possible to transfer your data to a Micosoft Excel file see appendix 3 2 Bypass function The bypass is used to exceed the pointer of the last reading stored in memory DUMP 1 1200 BYPASS will transfer 1200 readings even if the last reading stored is at the memory location 200 3 3 Clear memory After the data transfer you will eventually want to leave space for other readings In order to do so type CLEAR to see the display shown on illustration 8 GDD gt CLEAR TO CLEAR MEMORY WITH ALL ZERO ALL DATA WILL BE LOST CONFIRM WITH 0000 TO RESET MEMORY NUMBER TO ZERO DAT
22. TING FUNCTIONS AND TESTING 26 6 TROUBLESHOOTING mens 28 7 OPERATING PRINCIPLE sense 29 8 USE IN THE FIELD 31 8 1 GETTING 31 8 2 INITIALIZATION erect 32 8 3 5 5 32 8 4 USING AN OR A SNOWMOBILE Renee 33 8 5 0040400 34 9 INTERPRETATION OF READINGS se 35 9 1 DATAON NA TARG 2205 06 eene ee RUN 35 92 PROFILES ON 200000 000 001 36 10 PRATICAL APPLICATIONS eee 39 10 1 STRATEGY 39 10 2 ADVANCED TACTICS eeepc dele eoa eee uec dene ge er eui 40 10 3 CASE OF ANOMALIE FORMING A DOUBLET 41 10 4 42 10 5 CLAYEY GROUND eec oeuee oett ote eoe pee te heure eden 42 11 TRUE AND FALSE SIGNALS mes 43 11 1 PROBE AND FREQUENCY DRIFT 43 11 2 DRIFTING AND GROUND PROXIMITY eee 43 11 3 HOW TO INTERPRET BEEP MAT SIGNALS CLAYEY AREAS 43 11 4 SALT IN THE 4 44 4 88 43 12 INTERPRETATION OF VALUES 44 12 1 MAGNETITE 2 44 12 2 APPARENT CONDUCTIVITY 44 12 3 INTRINSIC 45 1
23. Typical information showed on the BM8 display Numbers may differed COMM 38400 8 N 1 15934 INTERVAL 5 0 seconds On your computer a window entitled Found New Hardward Wizard appears Select Yes this time only Next Choose Install from a list or specific location advanced Next Select 7 Search for the best driver in these location and tick Include this location in the search Do not tick Search removable media floppy CD ROM Browse Desktop My Computer CD Drive D Drivers USB OK Next The computer will install all the necessary drives Click on Finish when download process is completed Then to know on which port is connected the USB cable click on My Computer with the right button of your mouse and select Properties Choose Hardware tab Device Manager Click on the sign next to Ports COM amp LPT to see which number 18 associated to the USB connexion COM 1 2 3 The connexion number will be useful to know in following directives Close both windows by pressing red X on the upper right corner 52 How to import a text file in Microsoft Excel Open the Microsoft Excel software In the tool bar select File Open 3 At Files of type select All Files At Look in you have to localize your file This is very important in order to find the file you need The file extension is txt Then select the file you want to open
24. User s Manual BEEP MAT Model BM8 INSTRUMENTATION INC 3700 boul de la Chaudi re Quebec Qu bec 4B7 Canada Tel 418 877 4249 Fax 418 877 4054 www gddinstrumentation com VER2 1A INSTRUMENTATION GDD INC 3700 boul de la Chaudi re Quebec Qc Canada G1 X 4B7 Phone 418 877 4249 CanadaToll Free Number 1 877 977 4249 Fax 418 877 4054 Web Site www gddinstrumentation com E Mail gddinstrumentation com If emergency Pierre Gaucher Eng V P and general manager Home 418 657 5870 Cell 418 261 5552 or R gis Desbiens Eng President and director R amp D Home 418 658 8539 Cell 418 570 3408 Visit our web site at WWW GDDINSTRUMENTATION COM To Discover GDD s new products Download the latest version of the user s manual e Comment or ask questions about products 1 Table of contents QUICK USER S GUIDE PREFACE INTRODUCTION ananas animent 1 1 1 BRIEF DESCRIPTION OF THE BEEP MAT 1 1 2 MAT COMPONENTS 02 12 1 2 2 2 2 00000000 1 13 lt 8455 etm TIN 2 READING UNIT ss anneau 3 2 1 READING UNIT COMPONENTS suisses 3 2 2 DISPLAYS OF THE BEEP MAT 4 2 3 MAT STATUS eue 5 24 VOLUME 2 2 2 2 1 2 4 020422000000000000000000000000 7 2 5 BRIGHTNESS 05
25. a time allows the operator to go behing the ATV or the snowmobile to lift the probe during initialization time 2 13 Sound Control This menu is presented on two lines A black square indicates the line selected By pressing or the black square will move from one line to the other Sound When the thresholds for L HER or MAG are reached by the BM an alarm goes on Sometimes when you investigate the same conductor longer the alarm may become bothersome It is possible to neutralyse the alarm 13 To do so press MENU until this menu is displayed Move the black square at the line selected by pressing or 1 By pressing 2 or lt the sound will change from ON to OFF and vice versa If you forgot to reactivate the alarm it will automatically go on after a lapse of 5 minutes 2 14 Beep Mat System BM System The BM unit allows connecting more than one system It is also possible to connect a GPS System a MAG System or any type of probe communicating in RS232 It is possible to activate or desactivate the Beep Mat probe Select the option BM SYSTEM by pressing MENU until this menu is displayed Move the black square at the line selected by pressing or By pressing 5 lt the activation will change from ON to OFF and vice versa When the Beep Mat probe is not connected or if there is a malfunction of the probe a message No readings BM Probe is displayed momentanaly The reading unit disenga
26. ading unit then put the instrument in standby by keeping ON pressed until the end of the first sound signal 3 seconds The message STANDBY will appear You can carry the instrument while in standby but it is better to keep the probe at least 6 inches away from any large metallic surfaces i e the floor of a truck In such a situation it is recommended to put the probe upside down It is better that the probe be preheated before beginning a survey However even if the probe has not been sufficiently preheated you can start the survey anyway but once in the field you will probably have to reinitialize the Beep Mat more often during the first hour of use Put the probe on the ground strap the reading unit to yourself and attach the strain relief ribbon to the leather case as shown on illustration 13 You can then initialize the Beep Mat see section 2 3 Strain Relief Ribbon 32 8 2 Initialization First make sure you are not wearing metal helmet Lift the probe vertically above your head as shown on illustration 14 so that it is not affected by the ground and initialize the Beep Mat by pressing the ON key Wait until the initialization is over about 5 sec then put the probe on the ground You can now pull it again Remember that every 15 minutes the Beep Mat will signal to the operator that it needs to be initialized again It is possible to initialize the Beep Mat anytime by lifting the probe vertically in the air
27. appears on the display Modify the characters by using the arrows key 1 Le and gt Date and time The date DD MM AA and the time can be adjusted by pressing MENU until Date Time appears on the display The unit keeps in memory the date and the time even if the unit is off Warnings Connect the probe to the reading unit and initialize it far away from any conductive material If the display indicates NO HI FREQ No High Frequency or NO LO FREQ No Low Frequency refer to section 6 of this manual Troubleshooting If the batteries are too low the reading unit will send an alarm signal and will display the message LOW BATTERY Shortly afterwards the readings become meaningless Beep Mat malfunction The unit uses special fuse The fuse is chemical and as the property to build back itself The unit is then protected against static discharge and short circuit but not against breakdowns If the unit is not working disconnect the cable for 30 seconds connect it back and turn on the unit If the module displays No readings BM Probe verify if the cable is well connected If the problem persists change the cable and refer to section 6 Troubleshooting If the instrument does not display anything and does not send any sound but the status lights lights up at the initialization first check the display brightness with the key and the volume with the key lt section 2 4 and 2 5 EXAMPLE ON WHAT RECORD
28. arranty is void if the instrument has been the object of an abusive use has been opened or modified without authorization or if the serial number on the instrument has been altered erased or removed Instrumentation GDD Inc is not responsible for any eventual damages and or losses that may occur during transportation or use of the Beep Mat 13 3 Service Should the BM require repairs please contact Instrumentation GDD Inc at the numbers below in order to receive proper instructions for shipping When the instrument is under warranty all repairs are done free of charge at our office in Quebec taxes transportation and customs fees are extra If any instrument manufactured by GDD breaks down while under warranty a spare one will be provided free taxes transportation and customs fees are extra while the instrument is under repair upon request and subject to instruments availability Instrumentation GDD Inc 3700 boul de la Chaudi re Quebec Quebec G1X 4B7 Tel 1 418 877 4249 Fax 1 418 877 4054 E Mail gdd gddinstrumentation com Printed in Canada in May 2006 VER2 0 48 49 APPENDIX 50 51 How to install the USB drivers your computer A How to use the USB drive 1 10 11 12 13 Insert the Drivers USB disk furnished with the Beep Mat in the computer Plug the BM8 reading unit and the computer together using USB cable Put the BM8 reading unit on by pressing ON key
29. can be used to better understand any previous model 1 1 Brief description of the Mat The Beep Mat is a simple and efficient electromagnetic prospecting instrument adapted to the search of outcrops and or boulders containing conductive and or magnetic minerals It basically consists of a sleigh shaped short probe and a reading unit For prospecting you pull the probe on the ground to be explored The Beep Mat takes continuous readings while you walk and sends out a distinctive audible signal when detecting a conductive or a magnetic object in a radius of up to 3 meters The Beep Mat directly detects and signals the presence of ores even slightly conductive containing chalcopyrite galena pentlandite bornite and chalcocine It also detects native metals copper silver gold as well as generally barren conductive bodies pyrite graphite and pyrrhotite but which may contain precious ores such as gold or zinc sphalerite which are themselves non conductive Besides detecting conductors the Beep Mat measures their intrinsic conductivity and their magnetic susceptibility magnetite content This helps geologists and geophysicists better interpret others geophysical and geological surveys The BM allows the use of a Mag sensor and the connection of a GPS This combination allows to survey large areas to detect rapidly conductors to find their localization and to record their values 10 time a second A map of conductivity magnet
30. charging the batteries connecting an external sound alarm or data transfer with USB cable The DB9 jack center links the reading unit to an external GPS The DB9 jack below links the reading unit to the Mag sensor or to a RS232 data transfer cable The keys on the keyboard are used to access the various functions of the Beep Mat each key being identified at its center In this manual a word or a symbol in square brackets represents the key ON To turn the unit on or to change its state 2 3 lt To increase or decrease the volume of the beepers 2 4 EM To increase or decrease the display brightness 2 5 MENU To navigate in the menu 2 6 gt To select items in the menu 2 6 To select items in the menu 2 6 MEM To store the data 2 11 to reset or clear the memory 4 2 2 Displays of the Beep Mat The Beep Mat reading unit has five types of display in normal operation mode Beep Mat values Beep Mat graph Mag values GPS values UTM and degree minute and Date Time Battery It is possible to change the display by using keys et lt Take note that each display is associated with a particular reading mode If this mode is not activated then the display will not be displayed For example if the MAG SYSTEM is OFF or if the mode GRAPH is OFF their related info will not be displayed 1 Mat display in values mode is the most used It is used to indicate the parame
31. d magnetic rock could give a LFR or MAG value according to the proportion of those elements The bigger the object is or the closer it is to the probe the higher the value The presence of humidity in the ground causes the addition of an offset of Oto 100 to the MAG value see illustration 15 For that reason in the absence of conductors the readings are generally MAG Induction Field Induction Axis Beep Mat Overburden HFR 0 M 10 MAG 100 RT 0 Beep Mat Readings Illustration 15 Typical reading without any anomaly The HFR corresponds to the variation of the high frequency and the LFR or MAG corresponds to the reaction of the low frequency When approaching a magnetite rich sample for example a vein the low frequency reacts more than the high frequency so the MAG value should appear a little more negative than HFR value The MAG value increases in negative value see illustration 16 case b When approaching a conductive sulfide sample the HFR reacts more than the LFR Therefore the HFR value should appear and increase while the LFR value should remain low see illustration 16 case a If the HFR value is high and the LFR is almost equivalent it means that the conductivity of the sample is high and that the body could turn out to be metal Note the similarity of these reactions with those observed during the instrument testing chapter 5 3 The weaker the block conductivity is the weaker the HFR value will
32. dig If both anomalies persist dig at both places Land Displacement Orientation S rf ce Geological Trend Beep Mat Induction Axis Survey Line Illustration 21 Confirming double anomalies 10 4 Sampling On a given long conductor it is suggested to take a sample at every 300 or 400 meters and send them for assays since even a barren pyrrhotite horizon can turn out to be for example a rich ore ex Thompson Mine in Manitoba However on parallel horizons it is suggested to sample whenever the conductor s nature changes graphite to pyrite and wherever the geological environment is favourable fine pyrite in quartz veinlets By cleverly choosing their sampling sites Beep Mat users will make more discoveries Thanks to the Beep Mat a massive sphalerite horizon was once discovered about 10 meters from a sterile pyrite trench 10 5 Clayey ground On a target if you suspect that the ground is particularly conductive clayey ground dig a 30 cm deep trench that is big enough to insert the probe in it Put the probe into the hole and rotate it to find out from what direction the strongest signal is coming If the displayed values do not vary much it is due to the clayey nature of the ground But if the values increase it means that the conductive rock is hidden deeper If the values keep increasing while the probe is in the hole keep digging up to one and a half meter Usually clayey grounds are uniformly flat and
33. dow entitled BM HyperTerminal Yes See appendix How to install the USB drive on your computer 18 12 If someone else needs the icon you may copy it to his computer instead of following the previous steps B How to transfer the data stored in the reading unit to your computer 1 Connect the reading unit to your computer and turn it on You need the cable for data transfer USB or RS232 provided with the Beep Mat 2 Double click on the icon previously created on your desktop 3 In the tool bar select Transfer Capture Text File give a name to your file Start 4 Press ENTER on your computer keyboard and you will see a menu appearing on your computer screen f the keyboard freezes reinitialize the reading unit by pressing init button on the 8 reading unit BMS 1 7 by Instrumentation GDD Inc MENU gt DUMP memory_start memory_end bypass Set your software in capture and then send the DUMPcommand CLEAR Clear or reset the memory of the BM INIT also MENU key Initialize the probe INTERV AL seconds also RIGHT and LEFT key Set the interval reading Min 0 1 Max 240 START also MEM key Activate the BM readings The ESC key character ASCII 27 also MEM key Desactivates the BM readings GPS system Choose the system of GPS output Default value GPS 24 WGS 84 SYSTEM List of GPS systems This menu Rresents ei ard mands displ ave two commands are specially
34. e reference system from degrees minutes to UTM Don t forget to choose the good localization system To do so choose the DAT option just below by using the keys or 4 and determine the localization you are looking for WGS 84 NAD 83 Airy Austral Nation Bessel 1841 etc Use the keys lt or gt in order to modify it 2 17 Graph Option and Scrolling Speed It is possible to visualize the readings in graphic mode This mode is very useful when one does survey with an or a snowmobile because it is difficult to look at the reading unit while driving at the same time The graphic mode has the advantage to keep on the screen the last 23 readings that were taken In graphic mode conductive anomaly is shown by peak on the first line up and magnetic anomaly by peak on the second line down Please note that when the operator first inizialize the Beep Mat the graphic mode is not activated In order to activate it press the MENU key several times until the GRAPH option appears Use the lt or 5 keys to putthis option ON The operator can also adjust the speed of the scrolling with the GRAPH TIME option Press the key MENU until the function GRAPH TIME appears on the screen and select the scrolling time with the arrow keys lt or By default the scrolling speed is 1 0 second 2 18 Events Stamp and Data Transfer via USB Events Stamp The BM allows taking readings in continious mode at chosen int
35. ervals The BM allows the user to record data with pre determined intervals with the option MEMORY TIME It is sometimes difficult to identify the readings of a particular spot The stamp options therefore allows you to mark precisely the spot of the reading while recording To activate the stamp option press MENU until STAMP option appears to the screen Then select ON with the arrows or 2 The Beep Mat ten returns automatically to its reading In order to mark a position press or STATION will appear to your screen The readings will be recorded under the file name STATIONI 15 When transferring data it will be easy to find this recording If more than one spot is recorded the file name number will automatically incease STATION2 STATIONS etc 16 3 BM LINK TO A COMPUTER To better understand this chapter one must be familiar with microcomputers in particular PC compatibles communication software and serial ports or modems In appendix you will find instruction for data transfer How to install the USB drive on your computer and How to import a text file in Microsoft Excel Connect the reading module to a computer as shown in illustration 3 Data transfer cable DB3 connector USB or R5232 NL DB9 connector PC compatible ELEC Screen EI L CGLILISE TES A Overhead mew Illustration 3 Data transfer Turn your communication software on and press ON on the reading unit t
36. essary to initialize the Beep Mat periodically D To shut off the instrument press and hold ON until the end of the two beeps about 5 sec The display will show OFF then release If the instrument is not used during two hours it will automatically turn itself off E The instrument should be recharged every night from a 110 V socket Full charge takes between 4 to 6 hours When it is not used for a long period of time keep the instrument on charging If the batteries are too low the reading unit will emit an alarm signal and will display the message Low battery Shortly afterwards the readings become meaningless Put batteries on charge the same day Using the Mag Sensor Connect the Mag sensor to the back of the reading unit using the DB9 connector and press ON The display will show Jnitialization there will have 5 beeps If the Beep Mat probe is not connected the message No reading BM Probe will be displayed and the reading unit will automatically turn off BM detection BM SYSTEM OFF If the Beep Mat probe is connected to the reading unit BM detection will be automatically actuated BM SYSTEM ON The Mag sensor is not activated automatically MAG SYSTEM OFF To activate it press the MENU key until the SYSTEM appears on the display Use the arrow keys T or 1 to select MAG System and the arrow keys or gt to turn on the MAG System The MAG Initialization will be displayed To vis
37. ext time you hold down the key GG the brightness will go in the opposite way of the last action 2 6 Selection of Menus The BM has ten menus To obtain a menu press MENU The following menus are Identification NAME 0 ABCDEFGH IJKLMNOPQRSTUVWXYZ _ Date Time Battery DATE JJ MM AA TIME 15 48 34 Threshold values LEVEL LFR MAG 2 4 400 Waiting Time and Memory address WAITING TIME 4 sec NEXT MEMORY 1 Memory Time and Init Time BMEMORY TIME 020 sec INIT TIME 15min Sound and BM System BSOUND OFF BM SYSTEM ON GPS and MAG System BGPS SYSTEM OFF MAG SYSTEM OFF GPS reference system E GPS POSITION ddd mm mm DAT WGS 84 Graphic Option and tracing time E GRAPH OFF GRAPH TIME 1 0 sec Stamp events and USB transfer ESTAMP OFF The menu has two lines The black square indicates the selected line By pressing the key or 1 the black square will move from one line to the other When a menu is selected the keys lt gt or are used to select the items There is no ENTER key This key is replaced by a WAITING TIME 2 7 Identification To enter your identification press MENU until that the menue NAME is displayed The first character flash By pressing gt the next character will flash and by pressing the previous c
38. ge automatically the Beep Mat probe BM SYSTEM OFF 2 15 GPS and Mag System This menu is presented on two lines A black square indicates the line selected By pressing or the black square will move from one line to the other The default system of the BM is the Beep Mat probe The GPS and the MAG not activated The GPS SYSTEM and MAG SYSTEM OFF GPS and Mag SYSTEM To activate or desactivate the GPS and Mag System press MENU until this menu is displayed Move the black square at the line selected by pressing or By pressing gt lt the activation of the selected item will change from ON to OFF and vice versa The cable of the external GPS should be plugged in the middle connector of the reading unit Don t forget to fix the GPS antenna under your hat See 3 8 special configuration of the GPS When the Mag probe is not connected or if there is a malfunction of the probe a message No readings Mag Probe is displayed The reading unit disengage automatically the Mag probe MAG SYSTEM OFF 14 2 16 Reference System of the GPS By default the reference system of the GPS represents the latitude and the longitude in degrees minutes The X Y values are at 0 and the date and hour are not inscribed until the GPS has not found its localization To put the reference system in UTM press the MENU several times up to the GPS POSITION page Then use the keys lt or gt to change th
39. ge the serial data format to NMEA and bauds to 4800 Press two times QUIT button to return to the standard display 24 4 CLEAR OR RESET MEMORY To clear or reset the memory of the BM while on the field press and hold ON wait until OFF appears on the display then press MEM the message Reset Memory will appear on the display press again and the message Clear Memory will appear Release the ON key and the unit will either reset or clear the memory according to the selection The unit will automatically turn itself off after the excution of the opreration and the memory address will be zero The Reset Operation does not really clear the memory but reset the memory address to zero The data will not be lost until next readings are stored The next readings stored will overwrite the previous readings The data can still be transferred to a computer by adding BYPASS in the command DUMP The Clear Operation feeds all the memory space with zero The memory address is shown on the BM display and it will increase up to 8 093 750 then it will be reset to zero This operation takes 25 minutes to be executed The data will be lost To stop the execution press the MEM key If one of the following messages appears on the display Memory full or Memory corrupted you must clear or reset the memory 25 5 UNIT TEST Upon delivery of the Beep Mat always check if the batteries are charged 5 1 Battery charger It
40. give a relatively uniform LFR value between 25 and 80 on a large surface The ratio 43 Rt value should be very low on clayey ground indicating a poor conductor 11 TRUE AND FALSE SIGNALS Here are a few examples of true and false signals that you will learn to recognize by experience 11 1 Probe and frequency drift When the probe frequency drifts as during the preheating period the L H FR value may well increase and the alarm will go off Before digging reinitialize the probe in the air to correct the drift It the alarm stops once the probe is back on the ground continue your survey it was a false alarm caused by the drift of the probe But if the Beep Mat still beeps it means that it is a true signal and you can dig 11 2 Drifting and ground proximity If the probe has started to drift and is on humid ground the water effect may prevent it from beeping However as soon as the probe moves away from the ground ex when passing over a log the reading unit will beep Lift the probe in the air and if it still beeps reinitialize it In both cases pass the probe again at the place where it beeped to check if there really was a conductor at that place 11 3 How to Interpret Beep Mat Signals in Clayey Areas Clay layers deposited in brackish waters during one of the ice age periods are sometimes somewhat conductive On these clay layers charged with water the HFR value displayed by the probe laid on the ground will be
41. ground The probe is initialized at the last two consecutive beeps The probe must be pulled in a wholly plastic or wooden sleigh far for the vehicle see section 8 4 Basic keyboard ON To turn ON the BM or to change its state see 2 3 To increase or decrease the volume of the beepers see 2 4 To increase or decrease the display brightness see 2 5 MENU To navigate in the menu see 2 6 gt To select items in the menu see 2 6 T 4 To select items in the menu see 2 6 MEM To store the data see 2 11 or to reset the memory see 4 Display There are five types of display according to the operation mode The following are Beep Mat values or graphic Mag GPS or Date Time Battery To change the type of display press the arrow keys and while the unit 15 in normal operating mode 123 1934 MAG 10 Rt 0 Beep Mat Values Beep Mat Graph M 1934 AZ 170W TF 52374 Mag Values N 5182580 M 1 E 320953 ZONE 19T GPS UTM D 14 01 06 1 15 54 34 95 Date Time Battery Signal interpretation HFR and LFR are respectively the High frequency HFR and Low frequency LFR response relative conductivity They increase near a conductor The concentration of the sulfite will be proportional to the HFR LFR response We generally pick up a sample where the outcrop has the higher response The High frequency H
42. haracter will flash To modify a character use the keys and J If no keys are pressed for a time more than the waiting time the BM will go back in reading mode 2 8 Date and Time You can set up the date and the time by pressing the key MENU until the option Date Time is displayed The keys lt gt T and 1 are used to adjust the date and the time The module keeps the date and the time in memory even if the unit is off The date and time has the following fomat DD MM YY 2 9 Threshold Values The operating parameters of the Beep Mat and their threshold values are the following Parameters Threshold LFR conductivity 2Hz 1 2 4 8 15 20 40 80 150 200 30000 Hz HFR conductivity 4 Hz 1 2 4 8 15 20 40 80 150 200 30000 Hz MAG magnetite 400 Hz 1 2 40 80 150 200 400 800 30000 Hz To display the threshold parameters press on MENU until the desired menu appears The parameters are displayed By pressing lt or gt the threshold value selected will appear under its name To modify the displayed value use the T or keys If no key is pressed during a few seconds the BM will return to the normal operating mode It is important to remind that when a reading exceeds its threshold an alarm sound signal will go on By reducing the threshold of a value the sensitivity of the Beep Mat will increase and can send false alarms On the other hand by increasing the threshold of a value the sensitiv
43. he beepers reacts instantly then the beepers can signal a conductor even if the value in no yet displayed In this mode a message is displayed and a sound signals the operator to reinitialize the Beep Mat probe every 15 or 30 minutes Standby press ON until the first sound signal stops then release it Standby will then appear on the display The BM warms up to stabilize its frequencies The minimal preheating period suggested before beginning a survey is 30 minutes If possible the warm up could be done at the same temperature conditions that the one the survey will be done Mag sensor has not to be warm up Off To turn off the instrument Press and hold ON until OFF is shown on the display then release it The unit stops all functions and turns off If the instrument is not used during two hours it will automatically turn itself off 2 4 Volume Control It is possible to increase and decrease the volume of the Beepers To change the volume of the sound hold down the key lt 1 The volume will slowly increase or decrease Release the key at the appropriate volume The next time you hold down the key the volume will go in the opposite way of the last action 2 5 Brightness Control It is possible to increase and decrease the brightness of the display To change the brightness of the display hold down the key The brightness will slowly increase or decrease Release the key at the appropriate brightness The n
44. he following message will appear on the display of the BM COMM 38400 8 N 1 15934 INTERVAL 5 0 seconds 17 3 1 How to transfer data from the BM to a computer with HyperTerminal A How to create icon on your desktop for data transfer using RS232 or a USB cable with Windows 1 Start Programs Accessories Communications gt HyperTerminal Double click on Hypertrm exe Name type BM Select any icon Phone number do not type anything here and pass to Connect using ER us Connect using select Direct to Com1 Com 2 OK To know which port to choose check the place where the RS232 cable is plugged behind your computer For data transfer with USB cable see How to install the USB drive on your computer in appendix step 10 6 X Properties Bits per second 57600 Data bits 8 Parity None Stop bits 1 Flow control Hardware Bits per second number appears in left corner of BM8 display just next to C when the reading unit is connected to a data transfer cable 7 HyperTerminal File Properties Settings ASCII Setup 8 ASCII Setup ASCII Receiving select Append line feeds to incoming line ends Note Never select Force incoming data to 7 bit ASCII It does not matter whether Wrap lines that exceed terminal width is selected or not 9 10 File Save as Save in Desktop Save 11 Close the win
45. ic susceptibilty and magnetic total field can be done from these results A second field operation to recognize the nature of conductors could be scheduled 1 2 Beep Mat components When you receive your Beep Mat make sure that it contains all components shown on illustration 1 If not please contact Instrumentation GDD Inc Pay special attention to the terminology used on illustration 1 since it will be used throughout this manual Induction Axis We Calibration BM spare cable Carrying Bag Instruction Maral Point Battery Charger Illustration 1 Beep Mat components Also included RS232 and USB data transfer cables Optional components Mag sensor Loud sound alarm Protective shield under the probe e A4 6 meters BM cable 1 3 Specifications Power source Daily autonomy Memory capacity Weight Size Operating temperature Humidity Rechargeable batteries Up to 10 hours 8 093 750 readings Reading unit 1 9 kg Probe 3 8 kg Reading unit 18 x 20 x 6 4 cm Probe 30 x 91 x 7 6 cm From 20 C to 40 C Operate on rainy snowy and foggy days 2 READING UNIT This chapter describes the various physical and functional components of the reading unit as well as instructions on how to use them 2 1 Reading unit components DB15 battery charger connection external hooter USB data transfer cable Conductor s alarm hooter GPS connection Magnetite s alarm hooter Back view
46. ing or the black square will move from one line to the other The size of memory is shown during initialization at the top right of the display in Mbytes The number of readings that can be stored in the BM is the size of the memory divided by 32 A time interval of 0 1 seconds will take 9 days to fill the memory in continuous operation for a memory of 256 Mbytes Memory time With the BM it is possible to store the values shown on the display The Memory Time determines the time that the BM will record data This time can be set from 0 to 240 seconds A Memory Time sets to 0 second is used for Manual recording while any other values allow the Auto recording Those values can be stored either manually Manual recording or automatically Auto recording The BM gives a corresponding memory number to the values stored The memory number appears at the top right of the display Every time the BM stores a reading the memory number increases by one Manual recording memory time 0 0 sec The manual recording allows to store data by pressing MEM Press the key MEM each time you want to store a current displayed values in memory Auto recording memory time X sec The time selected at memory time determines the time interval at which the BM will record data automatically To access to the 12 Memory Time press MENU until this menu is displayed Move the black square at the line selected by pressing or 1 By p
47. is recommended to keep the instrument on charge when it is not in use for a long period The charger is voltage and current limited To keep the batteries charged connect the DB 15 jack at the back of the reading unit see illustration 11 DB 15 connector Battery Gharger Charger e LED Illustration 11 Battery charger If the batteries are weak the reading unit will send a signal and will display Low battery The readings will be meaningless Connect the 110VAC plug to a socket outlet If the power light does not come on the power source might be defective or the supply cable might have been cut The Fast charge light indicates that the batteries are charging When the batteries are completely charged the Fast charge light goes out Disconnect the charger and the Beep Mat is ready to use in the field 5 2 Battery testing When the batteries are fully charged it is possible to verify their capacity Connect the probe to the BM reset the memory as mentioned on section 4 Press and hold the ON key until OFF appears on the screen then press the key J The message Battery Test should appear on the display Release the ON key the BM will start to store readings every minute Let the instrument go on When the batteries are weak a low battery will appear on the display and the BM will shut off by itself Turn on the unit and check the address of the memory This number will give you the operating time of 26
48. ite Now place the red disk on the blue disk in the middle of the testing point The HFR value should be positive and the MAG value should be negative The Rt value should be 0 You should also hear the high pitched and low pitched sounds and the red CONDUCTOR and yellow MAGNETITE status light should light up The displayed values should correspond by 20 to the values marked on the red disk C and the blue disk M If the Beep Mat reacts as described previously it means that it works well Otherwise refer to section 6 0 Troubleshooting Repeat that test when you are not sure if the instrument is working well Those 3 tests are basic examples of the Beep Mat response in the field so try to becoming familiar with them The reaction to the red disk is the typical reaction of the Beep Mat when you pass over a conductor in a non magnetic environment The reaction to the blue disk is the typical reaction of the Beep Mat when you pass over a magnetic body or a magnetic environment The reaction to the red and blues disks is the typical reaction of the Beep Mat when you pass over a conductor in a magnetic environment 28 6 TROUBLESHOOTING If the instrument does not display anything and does not send any sound but the status lights lights up at the initialization first check the display brightness with the key H and the volume with the key If the Beep Mat is incoherent or if the reading unit indicates a problem such a
49. iting time the unit will return to its normal operating mode The waiting time selection is from 1 to 9 seconds The default waiting time value is 4 seconds Next memory address The BM allows beginning recording values at any memory address It gives a corresponding memory address to the values stored Every time the unit stores a reading the memory address increases by one The maximum memory address is the size of the memory divided by 32 The size of the memory is shown at the top right corner of the BM screen when initializing 11 To select the next memory address press MENU until this menu is displayed The first digit is flashing By pressing the next digit will be flashing and by pressing lt the previous one will be flashing To modify the digit use T to increase the value and J to decrease the value If no key is pressed for a time greater than the waiting time the unit will return to its normal operating mode NOTE The memory address begins at zero after a clear or a reset memory However if no clear or reset has been done before you initialize the probe the memory address should not have changed since the last use If the memory address has been accidentally reset enter a new address memory greater than the numbers of readings of the last survey This will avoid overwriting previous readings 2 11 Memory Time This menu is presented on two lines A black square indicates the line selected By press
50. ity of the Beep Mat will diminish and so will the number of false alarms The following table shows Beep Mat readings versus the depth of a conductive ore underneath the probe Thank to this table you are now able to evaluate the consequences of the modification of the threshold Depth HFR value MAG value in cm conductor magnetite 30 68 0 25 124 0 20 240 0 15 530 0 10 1329 0 5 3312 0 0 9233 0 versus the depth of a pyrrhotine boulder of 15 cm Keep in mind that if you modify the threshold and at any time you can become confused with the values Just turn the instrument off then on again to reset all default values These parameters should never be changed unless you are very familiar with the instrument Be aware that a small change of these threshold values reduces dramatically the depth of detection of the Beep Mat 2 10 Waiting Time and Next Memory Location Waiting time The keyboard of the unit has no ENTER key The ENTER key is replaced by a waiting time While a menu is selected if no key is pressed the menu will be displayed for a few seconds waiting time To select the waiting time press MENU until this menu is displayed A digit will be flashing by pressing the next line will be flashing and by pressing lt the previous one will be flashing To modify the digit selected use T to increase the value and to decrease the value If no key is pressed for a time greater than the wa
51. lift the probe and type the INIT command then ENTER Five beeps will be sent follow by two consecutive sounds The probe will be initialized The same command can be achieve by pressing the MENU key on the BM 3 5 Interval Command This command set the time interval between each reading sent to the computer The default value is 5 0 seconds To do so type INTERVAL 0 2 and the interval between each reading sent to the computer will be 0 2 seconds The time interval can be increase or decrease by pressing gt lt keys on the BM unit 3 6 Start and Escape Commands The start command starts sending readings at every time interval selected previously To start the BM sending readings to the computer type START and to stop use the escape key on the computer keyboard The same command can be achieve by pressing MEM key which starts and stops 22 sending data If the probe was not initialized an error message will appear on the screen of the computer ERROR 2 probe not initialised INIT The data sent to the computer are the Memory Address HFR relative conductivity LFR Mag relative susceptibility and Ratio The illustration 9 shows a example of data transfer On illustration 9 the ratio is 0 because LFR MAG is negative presence of magnetic body see section 7 Illustration 9 Example of data transfer 3 7 GPS reference System The default GPS coordinates are sent in UTM WGS 84 It is possible to choose among 24 s
52. nce of a conductor near the probe The HFR value High Frequency Response represents a specific reaction of the high frequency in hertz to the presence of a conductor near the probe The MAG value Magnetite represents a specific reaction of the probe in hertz to the presence of a magnetic body in particular one containing magnetite relative susceptibility The Rt value Ratio indicates the quality of the conductor intrinsic conductivity and is independant of the quantity of present material For the ratio value to be calculated by the unit there are two conditions the HFR must be at least 10 Hz no magnetite must be present MAG 0 In presence of magnetite the Rt value is altered and Rt 0 will be displayed When HFR is below 10 Hz the Rt value is not precise enough and Rt 0 will be displayed To help you better interpret those values a practical example is given on illustration 17 section 9 2 31 8 USEINTHE FIELD This chapter describes a typical sequence for a Beep Mat survey 8 1 Getting ready Prepare all the necessary field gear Beep Mat a and a VLF EM 16 electromagnetometer to localize airborne conductors radio field books sample bags small shovel hammer flag tape maps photos dynamiting kit marker compass etc Make sure that the batteries are charged If possible at least 30 minutes before beginning a Beep Mat survey connect the probe cable to the round jack on the re
53. of magnetite The graph presented on illustration 22 curve shows the apparent conductivity according to the HFR value and in the absence of magnetite Caution A veinlet or a coin will suggest a bad conductivity because the instrument measures the average conductivity of the area surrounding the probe However the instrument gives a real measure of the conductivity of a clay layer The closeness of water creates negative signals The estimate of the conductivity of a clay layer full of water is slightly more real if one lifts the probe 10 cm above the ground because the influence of water just as the influence of magnetite diminishes more rapidly than the effect of the conductor see curves b and c of illustration 22 Ground with 5 of magnetite 10 1 2 3 4 30 4 Ground conductivity m Mhos m Distance Probe ground in cm Illustration 22 Factors influencing the HFR value 45 12 3 Intrinsic conductivity In the absence of a magnetic body verify with a magnet the Rt ratio gives a measure of the intrinsic conductivity of the conductor and this ratio is not influenced by the size of the conductor Therefore a coin placed on the testing point the first D of GDD will give HFR values ranging from 70 to 80 while a typical Abitibi clay layer will also give a HFR value of 80 and therefore a Rt close to 0 clayey grounds offer poor conductivity Remember that the ratio value will be calculated only if the H
54. pter 7 Anomaly E is rather narrow and reacts mostly in HFR In this example it is due to the presence of a boulder in the till Do not attach too much importance to the exact shape of these profiles When you will pull the Beep Mat again the profile should change a little This is due to one or several of the following factors the probe has not been pulled exactly on the same line the surface is bumpy the surface condition has changed for example after rain The Beep Mat is adapted for quick jobs Experience will make you able to visualize these profiles by memory while delimiting an interesting target It is faster and more efficient to pass the Beep Mat again and delimit the target with flag tape then dig and sample than to draw a survey profile on paper once back at the office 38 Probe not centered the vein Probe centered on the vein 150 10 50 RT 33 Beep Mat Reading Illustration 18 Narrow conductor The illustration 18 is a good example of the Beep Mat responds over a narrow conductor 39 10 PRATICAL APPLICATIONS As mentioned previously it is essential before doing a Beep Mat survey to elaborate a strategy in order to maximize the chances of making a discovery When a Beep Mat anomaly appears in the field you must then use appropriate tactics 10 1 Strategy Look for a favourable ground for a Beep Mat survey such as an area where the overburden is not very deep
55. r The RT value is calculated only if a magnetic body is not present and if the HFR is greater than 10 counts otherwise the RT will show 0 When a magnetic body is present a negative MAG value is displayed on the screen of the BM reading unit At the initialization the HFR value must be lower than 4 the LFR lower than 2 and the MAG on the side of 8 You could hear one or two sounds from the beepers Bring a metal piece close to the probe ex keys or a can The HFR value should be positive and the CONDUCTOR status light see illustration 2 should light up and you should hear a low pitched sound The ratio value should be near 100 indicating an excellent conductor Take away the metal piece from the probe then place the red testing disk C conductor in the middle of the testing point the first D of GDD on the probe The HFR and LFR values should rise The Rt value 27 should indicate a value around 40 You should hear the high pitched sound and the red CONDUCTOR status light should light up Then take away the red disk and place the blue testing disk magnetic in the middle of the testing point The HFR value should be negative and the MAG value should increase negatively The Rt value should indicate 0 due to the presence of magnetite You should hear a high pitched sound and the yellow MAGNETITE status light should light up For example a MAG reading of 1000 corresponds aprroximatively at 1 of magnet
56. ressing gt lt the time can be modify to the value wanted If no key is pressed during a few seconds the BM will return to the normal operating mode To activate the Auto recording press on MEM The symbol will thus appear at the top right of the display to indicate that the BM is actually storing values automatically at every X sec To stop the Auto recording simply press on MEM again and the symbol will disappear Every time a reading is stored in memory the number of corresponding memory is displayed In your note book record this number thus the nature of the reading For example the localization the depth etc see section 8 5 Later on you can transfer the data to a computer to map the anomalies see section 3 2 12 Init Time Init Time It is necessary to reinitialize the BM periodically The default reinitialization time is 15 minutes However in some special conditions it may be more practical to increase the reinitialization time in snowmobile or It is possible but generally not recommended to do so To increase the reinitialization time to 30 minutes press MENU until this menu is displayed Move the black square at the line selected by pressing or J Change the Init Time by pressing gt lt the time will change from 15 to 30 and vice versa When the Init Time is at 30 minutes the initialization of the reading unit will automatically increase to 20 seconds This extr
57. ric readings when an alarm occurs A graphic mode allows the operator to visualize the conductive and magnetic anomalies The graphic mode has the advantage to show on the display the last 23 readings and with a default one second scrolling speed you can visualize the last 23 seconds A conductive anomaly is shown by a peak on the first line up and a magnetic anomaly is shown by a peak on the second line down The operator can adjust the speed of the scrolling allowing the ATV or snowmobile driver to look at the display less frequently The gaphic mode can also be used to map a showing to determinate if it is a large conductor or a small veinlets Make sure that the Beep Mat probe is far from a metallic material as the ATV the snowmobile or some sleighs To do it you must put the probe in a wholly plastic or wooden sleigh or pull the probe far from the vehicle The maximum suggested speed is 20 to 30 km h It is sometime difficult to proceed at the initialization of the probe because of a large amount of snow or because the probe is at the back of the snowmobile The user can set the initialization time at 30 minutes with the INIT TIME option With this mode there will be 20 beeps instead of 5 This extra time allows the operator to go from the vehicle to the probe and hold it over the ground The probe is initialized at the last two consecutive beeps 34 PHAN wqrssod g opt pnjesn 2m SUES rax my des wp
58. s Low Battery NO HI FREQ No High Frequency or NO LO FREQ No Low Frequency one of the following components might be defective probe cable battery charger reading unit batteries probe In order to try to fix one of these parts first check if the probe cable is correctly screwed to the reading unit Then check if the batteries are fully charged by using either the other cylindrical connector of the charger or another charger see 5 1 Battery charger If the instrument is still not working try to clear its memory see 4 CLEAR OR RESET MEMORY If the problem persists replace the probe cable it may be damaged To replace it unscrew the screws of the cover plates see illustration 1 Then unscrew the connector located there with a pair of pliers and cut the tie wraps if necessary Connect the spare cable to the same hole where the defective cable was and test it If it works put the tie wraps back it is essential then put the cover plates back in place The Beep Mat may also display the presence of a problem such as a low battery or non working elements If you are not sure what the problem is repeat the test described at section 5 3 If the Beep Mat still does not work call Instrumentation GDD Inc so that arrangements can be taken to ship you another unit as soon as possible while the instrument is under repair Always return the complete instrument with all its components in its carrying bag to GDD 29 7
59. ters measured by the Beep Mat probe 0 1 LFR 0 RT 0 2 The Beep Mat displays in graph mode are very usefull for surveys done with ATV s or snowmobiles The parameters of the Beep Mat probe are indicated on two lines The first line indicates the conductor signal intensity and the second line indicates the magnetic signal intensity G 3 The Mag display indicates the azimut and the magnetic total field The magnetic north is indicated by azimut 0 E The Mag sensor can be used as a compass The total field is indicated in gamma and the sensor can measure a total field as high as 120 000 gammas M 1 AZ 30 E TF 58645 4 The GPS display indicates latitude and longitude in degree minute or in UTM according of the reference system used To modify the reference system select DAT by pressing MENU and with arrow keys choose your preference for example WGS 84 NAD83 Y 46 46 37 1 X 71 20 71 180603 1424 GPS degree minute N 5182580 M 1 E 320953 ZONE 19 GPS UTM 5 The Date Time Battery display D 14 01 06 M 1 T 15 54 34 BAT 95 2 3 Beep Mat Status The ON key is not only used to turn the unit on it is also used to put the unit in one of the following four states On Initialization Standby or Off To turn on the unit connect the Beep Mat probe and press the ON key The unit is initializing and measures the reaction of the
60. tion 19 Simplified example of strategic map Once in the field at the beginning of the survey try to evaluate the operating parameters of the Beep Mat Modify them if you find it appropriate You may also want to modify these parameters in order to reduce the alarms frequency Cover target areas according to your strategic map Use the Beep Mat to localize known conductors discover new conductors or detect mineralized boulders 10 2 Advanced tactics If you detect an anomaly reinitialize the Beep Mat and pass it again on this anomaly it should beep again With a post flag tape etc mark the spot where the highest value was obtained Keep that value in mind Zigzag around the spot taking into account the conductor s direction or the geological direction see illustration 20 With colored flag tape delimit the anomaly contour its size and other spots having high values Check if this anomaly appears again farther in the same geological direction If you do not find the conductor you can use a Mag VLF to localize its axis then zigzag with the Beep Mat over the known Beep Mat axis to find where the conductor comes closer to the surface But remember that any conductor 41 that a Beep Mat detects may lead to the discovery of a mine even if the VLF had not reacted to it So maximize your time by pulling the Beep Mat instead of running a VLF survey Beep Mat Survey Line Dig here first First Beep Mat Anomaly Detailed Survey
61. ualize the Mag values press the arrow keys lt gt the display will show the azimut and the magnetic total field Using the GPS The GPS cannot be used alone it has to be use with the Beep Mat probe or the Mag Sensor connected to the reading unit Connect the GPS to the back of the reading unit using its external connector furnished with the GPS and press the ON The unit will search for the Beep Mat probe and if the BM probe is not connected the reading unit will automatically turn off BM detection BM SYSTEM OFF The GPS is not activated GPS SYSTEM OFF Press the MENU key until GPS SYSTEM appears on the display To activate the GPS use the arrow keys lt or To visualize the GPS coordinates press the arrow keys lt or gt the display will show the X and Y coordinates in degrees minutes To indicate them in UTM press the MENU key until the GPS POSITION appears Use the arrow keys lt or gt to select the UTM Afterwards select the DAT option using the arrow keys 1 or J then select the localization system WGS 84 Nad 83 Airy Austral Nation Bessel 1841 etc with the arrow keys lt or gt The serial data format in the GPS must be adjusted to NMEA and bauds to 4800 to allow the data transfer see section 3 8 The optimize satellite detection attach the GPS antenna under your hat strongly recommended Note Surveying arrow keys lt or allow to visualize once at a time Beep Mat
62. uo psunqo W IH MILA 40 amp Jo YL s0pq Ry des g wea q on vs pestzopos2 107 ge sn TORPED 10 Xp I 0 bomow n g mspmoqe x pipo aL a sdasq spaodsarpyy dog sw mio vary H BR LUN JO aims ag punog oum wosed sq Jo Tan d Xnpnpao HP pealorm 4 aims y mcg R ur sipnpu I sorsts 065 86 0009 ASE nm TER alaaf zs Es 786914 011986 0 vs one 0005 0071 4 01499 028212 270186 000 0007 nn ees I gei Wu FI SVN poumoo sqq ps TEomusq pad e po epdurexa ue st atay Yooqaou mot ur sqou zadoxd ae preprodurt st jt punc 10j3npuoo yaa Jo UOTENTRAS 104 srojonpiroa Jo 10 pur rv daag au vi fo qdumxg CS 8 5 Example of notebook 35 9 INTERPRETATION READINGS This chapter explains how to interpret the values on target and the profiles of these values 9 1 Data a target LER and MAG values are influenced by the conductivity of an object and its magnetite content value indicates that the object is more conductive than magnetic while MAG value indicates the opposite A conductive an
63. ystems The available systems are listed by the command SYSTEM Type on the computer the command SYSTEM the table in illustration 10 will be displayed SYSTEM 1 ddd mm mm 2 Airy 3 Austral Nation 4 Bessel 1841 5 Bessel 1841 Nam 6 Clarke 1866 7 Clarke 1880 8 Everest 9 Fis 1960 Mercury 10 Fis 1968 11 GRS 1967 12 GRS 1980 13 Helmert 1906 14 Hough 15 International 16 Krassovsky 17 Modified Airy 18 Modified Everest 19 Modified Fis 1960 20 South Amer 1969 21 WGS 60 23 22 WGS 66 23 WGS 72 24 WGS 84 GDD gt Illustration 10 List of GPS reference systems To select the reference system type the command GPS X where X corresponds to the number of system selected This is an example for the selection of a reference system in degrees minutes Type GPS 1 on your computer and the GPS position will transfered in degress minutes 3 8 Configuration of the GPS A special configuration is needed to transfer data from the GPS to the Beep Mat s reading unit To permit the data transfer from the GPS to the Beep Mat reading unit a modification in GPS parameters should be done Steps to follow with a GPS model Garmin 76 Press on button Press a second time on MENU button to reach the Main Menu Select Set Up and press Enter button Select Interface tab and chan

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