Please Note:- These pages are retained by TOSD for archival purposes only
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Super Fix

&
How you use it with your detector

SuperFix Tips and Techniques

  1.    SuperFix has been designed for use with the following detectors
             SuperFix is intended to be used with all of the Minelab PI detectors  including the SD2000 model SD2100 models and SD2200 models, and also the later GP Extreme, GP 3000 and GP3500 models.

  2.    SuperFix Scan speed
            SuperFix has been optimised for a scan speed of one metre per second.

  3.    Detector threshold level setting
      
     The SD or GP detector must have a continuous audible level of threshold for SuperFix to obtain a signal to process.

  4.    Detector tone setting
            When using SuperFix the detector tone should be set approximately mid to low range for best results.

  5.    SuperFix sensitivity control setting
    
       Recommended setting is approximately nine o'clock position to begin searching and adjust up or down according to prevailing ground conditions.

  6.    Dealing with detector overload
 
          When the SD or GP detector goes into overload conditions no intelligent signal information is available to SuperFix for processing. When the detector is being used in the SuperFix mode and an overload condition occurs, the audio switches back to Minelab as an audible warning to the operator, the searchcoil should then be raised to height above the ground where a non overloaded signal is obtained for both target identification and pinpointing.

  7.    Choice of headphones
 
          To obtain the stereo (actually binaural) features of SuperFix a pair of stereo headphones with inbuilt volume controls to each ear should be used, this may also allow some operators to balance the audio levels they hear to each ear to compensate for hearing defects in one ear. The same stereo headphones may also be used for a mono rendition of SuperFix's High Tone / Low Tone audio when used in the normal Minelab mono headphone socket. The normal standard for stereo headphones having a single cable from one earphone, is that earphone is the left channel - SuperFix sends the high tones to this left earphone. Headphones come in a wide variety of designs and electrical specifications, generally those having a higher impedance will allow the unwanted channel to be attenuated to a lower level

  8.    Searching predominately for  large target with stereo headphones
            When using
stereo headphones inserted into SuperFix's stereo socket that have inbuilt volume controls to each ear, operators who wish to search primarily for large targets (Low Tone) can do so by simply turning down the volume to the opposite ear, (High Tone) targets thereby reducing to a much lower volume any high tone mineral breakthrough, and the distraction of these unwanted small target signals.

 9.    Searching predominately for small targets with stereo headphones
 
         
The same technique can be used to search for small targets in areas where large targets are not usually found. The low tones can be minimised eliminating any ground noises which have a target signature of larger targets and the threshold silence period then applies to larger targets in the same manner as above.

10.   Using the High/Low tone Channel selection switch
            We believe that the following procedure will prove to be a killer technique for use in the gold fields and we recommend that all SuperFix users give this method a try.  - 
By selecting one tone only the terrain being searched can be divided into two search zones shallow (smaller targets) and deeper (larger targets). It should be noted that when used in this mode with say, the Low Tone selected to exclusively search for larger targets and the high tone completely eliminated, small targets are not lost, we have included a unique feature whereby the threshold is silenced for the passage period over a small target. Small target signals are usually readily recognisable from ground mineral signals by their consistent signal as you raise the searchcoil while pinpointing up to the drop out point, ground mineral does not usually do this, however hot rocks are another matter and can be very difficult to distinguish from a genuine target.

10.     Ground balancing with a bias for small or larger targets
 
          When using SuperFix with a manual ground balance detector model (SD2000 or SD21000), and searching exclusively for either large or small targets, the response for whichever size target is chosen may be slightly enhanced by biasing the mean average ground balance setting slightly positive for that setting (giving a signal as the searchcoil is lowered to the ground).

11.     DD versus Mono searchcoils
            SuperFix may be used with either DD or Mono searchcoils but it has been optimised for use with mono coils. We have taken this course because we are of the opinion that DD coils are only a mediocre method to compensate for a detectors inability to handle highly mineralised ground. A smaller diameter mono searchcoil, having the same surface capture area as either a DD Transmit coil or Receive coil surface capture area, will give a superior performance depth wise for a given target due the reciprocity of the mono coil. DD coils have the transmit winding offset to one side of the coil centre, with the receive winding being offset to the other side. Due to this arrangement SuperFix pinpoints the target to the centre of the receive winding which is offset from the coil's centre line.

12.    Choosing coil type
            After market searchcoils are prolific in number and vary considerably from manufacture to manufacturer, in their physical configuration, electrical configuration, electrical parameters, method of construction, quality, and performance.
            SuperFix has been designed for use with the manufacturers standard range of  searchcoils, with the 8" mono searchcoil being the standard performance criteria, however it may also be used
with after market searchcoils of all configurations and sizes with the following proviso.
            Our extensive field testing has shown that when using SuperFix with some after market searchcoils in the more sensitive SuperFix MODE, it may not be possible to use the inbuilt speaker, this is not a fault with SuperFix, but is due to the poor magnetic shielding of some aftermarket coil cables, allowing the speakers magnetic field combined with external magnetic fields to enter the front end input of the detector,

13.    Choosing coil size
            While SuperFix may be used with all coil sizes the operator needs to give serious thought as to the probable target size likely to be found in the area being searched and its relationship to coil size. Much of the current hype regarding coil size seems to sending the message that bigger is better, and this is definitely not true in most cases. In many cases a smaller searchcoil will go deeper than a larger coil for certain size targets.

14.    Minelab Detector searchcoil connectors
    In keeping with earlier and current  VLF (frequency domain) detectors Minelab has retained a low signal mike plug and socket connector to attach searchcoils to their SD & GP model detectors. We cannot wonder if this was a wise choice. "Super Fix & What you should know about your Minelab PI"

15.    Minelab Detector phasing
            Since the introduction by Minelab of the original SD2000 the phase of the audio output signal has been reversed on all subsequent models produced, including the SD2100 to the current model SD3500.
            SuperFix has a ON/OFF phase selection switch position which is selected at switch on according to the model detector being used, this ensures that regardless of the detector being used, all small/fast targets produce a high tone and that all larger /slow targets produce a low tone, this phase reversal only happens at the audio output stage and cannot affect the detector processing procedures. If the operator so wishes, the phase may be reversed without any ill effects.

16.    Searchcoil phase
            Our field testing has shown that some after market searchcoils also have their phase reversed from the Minelab standard, this may well mean they are no longer optimised to the detectors pulse sampling and ground balancing circuitry, and/or the other following process circuitry, and could thereby degrade their ultimate performance.
            While the ON/OFF phase selection switch described above may be used to reverse the SuperFix audio output, it does not compensate for any detector processing problems due to a reverse phase coil input.

 

Please note:-   As further information becomes available, this page may be extended or amended accordingly.


Please Note:- These pages are retained by TOSD for archival purposes only
Finders Pty. Ltd. has now ceased trading  - All prices and offers shown within this archival section are no longer available.

 

 

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Last modified: November 19, 2006