Technical data
  18
•  A standard  humanitarian  demining  Earset (Earset Speaker On) 
permits  the  F3’s  internal  speaker  to  continue  to  function  even 
when the Earset is connected. 
•
••
•  For  military  countermine applications, an  Earset that  mutes  the 
F3’s internal speaker when the Earset is connected is available 
(Earset Speaker Off).  The Earset Speaker Off is identified by a 
short  length  of  green  tubing  located  at  the  rear  of  the  Earset 
plug. 
3.2   Sensitivity  Endcaps.    A  unique  feature of  the  F3  is  its 
ability  to  change  sensitivity  through  the  exchange  of  Sensitivity 
Endcaps.    This  design  feature  eliminates  the  possibility  of  an 
operator  selecting  the  wrong  sensitivity  through  manipulation  of 
knobs  or  switches.    The  Sensitivity  Endcap  provides  an obvious 
visual  cue  that  confirms  the  level  of  sensitivity  selected  in  the  F3. 
The F3 is supplied with Black and Red Sensitivity Endcaps. 
•  Black  Sensitivity  Endcap.    With  the  Black  Sensitivity  Endcap 
fitted,  the  F3  performs  at  maximum  sensitivity.    The  Black 
Endcap MUST be  selected  when searching for minimum  metal 
mines or when maximum clearance depth is required. 
•  Red  Sensitivity  Endcap.    With  the  Red  Sensitivity  Endcap 
fitted, the F3 performs at reduced sensitivity.  This feature may 
be  useful  when  there  is  a  need  to  ignore  small  metal 
fragmentation on the surface but  still detect large targets at 
depth. 
NOTE 
If  the  Red  Sensitivity  Endcap  is  not  fitted  correctly,  or  there  is  no 
endcap  fitted,  the  detector  automatically  defaults  to  the  maximum 
sensitivity  setting  (Black  Sensitivity  Endcap).  If  the  Red  Sensitivity 
**WARNING**
Minelab strongly recommends that an operator should 
always wear an Earset when using the F3 detector. 










