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Selective Metal Detector SOREX PRO. Operating manual. 

AKA LLC +7(495)623-4026 621-0481 http://aka.2000.ru  [email protected] 

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The appropriate symbol (E) is shown in the bottom right corner of the display when the 
"Economy" mode is on). 
 

EMI filter   (electromagnetic interference).  

The  search  near  sources  of  electromagnetic 

interference  is  a  common  problem  (overhead  lines,  pipelines 
equipped with cathodic protection and so on). There are many 
FS  in  such  areas  and  the  sensitivity  of  the  device  has  to  be 
reduced  with  all  the  circumstances  that  follow.  EMIF  is 
intended for the neutralization of such FS with the sensitivity preserved.  
Set  up  the  adequate  filtering  in  the  following  manner:  Increase  this  level  gradually  and 
get  comfortable  hearing  FS  minimum  from  the  EMI.    Remember  that  excessive  level  of 
EMIF may miss small targets and slow down device operation.  

 

Ground balancing  

Device  ground  balancing  is  the  most  important  aspect  of  the  device  search 

settings.  Incorrect  balancing  may  reduce  search  capabilities  of  the  device,  causing 
unstable operation and false responses. 
    

Brief description of the procedure. Each object  has its own shape, conductivity 

and  magnetic  compound,  all  of  them  are  assumed  to  be  VDI  (Visual  Digital  Index).  We 
remind that  VDI is an angle preference, its number equals to the inclination of the signal 
vector (hodograph on the device display) from the vertical axis. The ground, depending 
on  the  mineralization  level  (presence  of  iron  oxides),  covers  target  signal  with  its  own 
signal,  changing  its VDI till it  "converts"  small and deep targets, as  well as large targets 
made  of  high  conductivity  metals  (copper,  silver,  aluminum),  into  the  "iron".  The 
accurate  detector  ground  balancing  in  the  search  area  is  performed  in  order  to  reduce 
the ground influence to the minimum.  Major balancing purposes: 

1.

 

To make the ground "invisible" for the device, i.e. avoid phantom signals 
from the ground with no targets in it. 

2.

 

Set  up  correct  (standard)  reference  system  for  VDI.  Accurately  balanced 
device must  cut-out ground signal mathematically and identify the target 
correctly getting joint signal from target and ground.

 

  

It should  be noted that  during "air tests" the balanced device will keep making 

correction for the ground ... which is not available at the moment. During an "air" test it 
may lead to an "invisible" large aluminum or copper object (pan, 5 kopeks of Catherine II), 
if the ground has got too deep into "plus". And if this "too deep" is too big, those targets 
may be detected as "iron" ... and the tester might get very frustrated. Or, to the contrary, 
it  would  decrease  VDI  of  those  targets,  when  balance  gets  too  deep  into  "minus",  and 
sensitivity to them "in the air" goes up incorrectly ... resulting in unreasonable happiness 
and hopes of the tester. 

 
Memorize  a  simple  formula:  One  degree  of  balance  phase  change  gives  VDI 

change for all targets by the same one degree to the change direction (+ or -). I.e. if you 
have  5  kopeks  of  Catherine  II  detected  as  "iron"  "in  the  air"  with  VDI  -86  instead  of 

Summary of Contents for SOREX PRO

Page 1: ...elective Metal Detector SOREX PRO light portable multi frequency supersensitive fast multipurpose Operating manual For Sorex Pro product support and discussions visit http www reviewdetector ru Don t be lazy Read it first ...

Page 2: ...М MAIN MENU 8 М1 MAIN ADDITIONAL 9 A AUDIO MENU 11 A1 ADDITIONAL AUDIO MENU 12 V VIDEO MENU 14 S MENU 15 GROUND BALANCING 16 DISCRIMINATION SEARCH MODE SETUP 20 DISCRIMINATION SECTOR SETUP 22 ALL METALS SEARCH MODE 22 STATIC MODE PIN POINT 22 SEARCHCOIL REPLACEMENT 23 VISUAL IDENTIFICATION TOOL HODOGRAPH 25 THE ADVANTAGE OF HODOGRAPHIC INDICATION OVER VDI 25 MULTI FREQUENCY 26 SEARCH AND IDENTIFIC...

Page 3: ... batteries power supply The configuration of this metal detector allows using any searchcoil manufactured by the AKA Company regardless of their size or operating frequency Like always the device is based on our original two channel pattern including independent and operating in parallel detection channel the channel which transmits single tone signal for the sound indication SI in the real time m...

Page 4: ... PRO becomes one of the most versatile detectors with record breaking detection depth and unique identification capabilities Moreover we are pleased to inform you that this model was updated to simplify its usage and increase the comfort of search 1 We have updated ground balancing system From now on the GB phase executed right after the searchcoil adaptation shall be taken as 0 by default All cur...

Page 5: ...e equipped with extendable arm providing no disassemble portability option electronic module bracket hanger in the arm rest zone for better mechanic balancing of the device sold by supplementary order sold separately or in supplementary order WARNING For additional accessories and types of searchcoils go to aka 2000 ru Specifications Maximum detection range of metal objects in the air searchcoil 1...

Page 6: ...2V WARNING Please insure that the battery batteries is properly installed installation polarity is shown on the battery compartment The device can be damaged in case of wrong polarity or power supply voltage Do not use dead batteries with fresh ones It would cause immediate charge drop in this set to the minimum Controls and connections LCD graphic display headphone jack and 7 detector control but...

Page 7: ...Index This is a so called electrical conductivity indication of the object Angle between the vertical axis and main direction of the curl hodograph located in the left part of the screen has negative VDI and the right one has positive VDI Signal level signal amplitude from the object in arbitrary units Device Settings Warning All changed settings remain in the device memory after the switch off th...

Page 8: ...quantity of surface iron the device is unlikely to detect a coin located lower than this iron while the depth is tolerable in the clear area it could be even deeper At the same time the device may not distinguish small nonferrous object for instance a flake small odd shaped coin located on the same level as the iron or a bit higher from the total searchcoil snap including the deep iron While the d...

Page 9: ...a great search depth and distinction of objects located close to each other is more important In most cases we recommend to set value to 6 Left discriminator border Use buttons and to set up left discrimination sector border All targets with VDI as well as hodographs located to the right of this border will give the sound signal when they are detected by the device Targets with VDI located to the ...

Page 10: ...low When this setting is on the display shows A When this function is turned on the device traces soil mineralization searchcoil heating and cooling and other factors influencing the accuracy of the device ground balancing and it makes a correction allowing operator not to mind changes himself and perform the ground balancing procedure less frequently This option is not recommended for use in tras...

Page 11: ...ce panel To set up parameters press and Press for exit or automatic exit 7 seconds after the end of the setting Menu entries 1 Sound Volume 2 Sound Volume Fe 3 Sound Volume of weak signals Sound Volume This option allows to adjust device sound volume to your own preference External speaker turns off when the headphone jack is inserted into the slot on the front panel and this option allows to adju...

Page 12: ...nation of the threshold tone and ST gives total sound information on the nature size and depth of the target but they are notable for high sound overflow that may cause discomfort in trashy areas In sound indication RTT the threshold tone increases till the moment the device is able to detect the metal the target is made of Once it is done the threshold tone cuts down and the separate identificati...

Page 13: ...s the essence of the PST It is obvious that such mode is more informative but it requires more trenchant hearing analysis related to practical skills MST sound indication type modulated short tone This option allows increasing sound indication capabilities making short tones more informative in weak signal zones Tone modulation is made by the width of tone burst depending on the object signal leng...

Page 14: ...lodies of your choice or turn off the startup melody at all V video menu To enter the V video menu press and hold several times on the device panel To browse its entries press the same button several times To adjust parameters use buttons and Press for exit or automatic exit 7 seconds after the end of the adjustment Menu entries 1 Contrast 2 Weak signal scaling 3 Storage Contrast This option allow...

Page 15: ...eral times To adjust parameters use buttons and Press for exit or automatic exit 7 seconds after the end of the adjustment Menu entries 1 F button 2 Economy mode 3 EMI filter F button The programmable F button is intended for the quick access to general modes during the search The following actions may be assigned to this button Economy mode switch change type of sound indication change ST type ch...

Page 16: ...ground depending on the mineralization level presence of iron oxides covers target signal with its own signal changing its VDI till it converts small and deep targets as well as large targets made of high conductivity metals copper silver aluminum into the iron The accurate detector ground balancing in the search area is performed in order to reduce the ground influence to the minimum Major balanc...

Page 17: ... increase above the metal object Select an area with no localized sharp threshold tone increase swinging the searchcoil 5 10 cm to the left and to the right above the ground If there is no localized sharp threshold tone increase it is the area suitable for balancing 2 Having found the metal free area raise the coil 30 40 cm above the ground press wait for 3 seconds and move the coil to the ground ...

Page 18: ...und influence Digits showing ground mineralization level will be displayed in the right corner in accordance with the device scale It is worth to mention that every device has a unique average angle of the ground balance phase and may also depend on the technical parameter spread of the searchcoil and ambient temperature But taking those values into account don not forget that your device stays in...

Page 19: ...sensitivity to large copper coins 5 kopeks of the Catherine II such objects may even become invisible and give iron response If by any reason there is no clear area found the balancing may be performed on a slice of excavated soil 1 1 5 kg with all metal objects removed from it and having it in a plastic bag for the sake of convenience After that fix the device and have its coil at the distance of...

Page 20: ...ving detection signal while ignoring other objects the operator is not interested in for instance nonferrous object signals only or large iron objects helmets kettles buckets ignoring small and medium iron trash nails This capability increases search comfort but one should remember that a valuable object may be missed in this mode Anyway you get to choose The discrimination range of your device is...

Page 21: ...he 18th century and the beginning of the 19th century From 70 to 86 Large copper coins silver rubles as well as large flat or spherical iron objects helmets kettles plows axes etc From 86 to 90 ground on the unbalanced device hot rocks as well as very deep large objects made of high conductivity metals for instance aluminum bowl big silver salver Hot rock is notable for stretched rubber signal whi...

Page 22: ...tor setup press or automatic exit 7 seconds after the end of the last setup input Warning We recommend to setup VDI value of the left discriminator border equal to the low tone border LTB All metals search mode In this mode the device responds to all objects either iron or nonferrous with the tone corresponding to object s VDI The advantage of this mode is in high descriptiveness and informativity...

Page 23: ...ontour in the ground by crisscrossed passes To exit the mode press one more time Searchcoil replacement Changes of search conditions may require replacement of a searchcoil with another searchcoil of different size and operating frequency For example moving from relatively clear zone to the trashy zone The search goal may also be changed from large to small objects Such change increases operating ...

Page 24: ...re similar For example if several devices get right GB in the adaptation mode in a certain temperature and in one area and then perform correction in operation balance in changed temperature conditions all devices will show relatively similar GB phase shift 2 It is more comfortable to trace from 0 all balance changes caused by temperature and mineralization It enables better control over the GB qu...

Page 25: ... give hodograph in the left half of the screen but with a great deflection from the zero to 35 VDI Hodographs of large iron objects helmet axe tin plate also appear in the right half of the screen 3 Larger reflection surface and higher conductivity of the object give stronger hodograph inclination to the right For instance with equal diameter and thickness copper coin hodograph would be closer to ...

Page 26: ... large targets made of ferrous and nonferrous metals as well as spoils of war 7 kHz medium universal frequency for a wide range of goals It can be used for the search for medium small coins and spoils of war This frequency is suitable for the on the ground reconnaissance 14 kHz is a frequency suitable for small and medium coins especially when they lay on the ridge This frequency is efficient for ...

Page 27: ...raction pattern with metal objects in close zone signal levels more than 80 That is why try to choose scan gap distance to provide 20 50 of signal level while identifying object type In other words try to indentify objects beyond close range zone if conditions allow you to do so The so called hot rocks cause problems during search operations their VDI is more than 84 To distinguish hot rocks and r...

Page 28: ...main M T algorithm should be used 1 Select correct general sensitivity of the device adequate to the area trash level The higher the trash level is the lower the general boost and identification channel sensitivity should be ST Use the Economy mode Remember high sensitivity does not always mean high search performance 2 Try to move a coin in close proximity to the search coil You ll see that there...

Page 29: ...e sound recognition of the group of targets common to your search area To exit the submenu press Tone tuning In this submenu you can change tonality of identification signals comfortable for your ear The bigger number is the higher the tonality goes The lowest tonality corresponds to the iron the highest one corresponds to large high conductivity metal objects When you change the tonality we sugge...

Page 30: ...ears You will see a Factory Settings onscreen message In most cases this reset will solve the problem Phantom search signals when there is no metal targets are possible in following cases 1 Incorrect ground balancing With incorrect ground balancing when the balance phase a digit in the left corner of the screen is shifted to the minus values too much false responses are possible in the nonferrous ...

Page 31: ...ufacturer during the warranty period free of charge provided that there is no damages in electronic module and searchcoil This Operating Manual with the sale date mark should be provided together with the device in case of warranty repair Warranty period is calculated from the date of manufacture in case there is no sale date mark Send claims to QA QC certificate Metal Detector SOREX PRO _________...

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