22
NOTE:
The
Reject
feature of the detector does not function in the same way as
the discrimination control on a VLF detector. It provides variable audio masking
of iron targets as well as high-conductivity targets. Also, unlike some PI detectors,
there is no target hole.
Expert Reject Control
1.
Choose
Tone
,
Mute
, or
Volcanic Sand
mode.
2
. Set the
Reject
control to 6 and the
ATS
control to 0.
3
. Put the reference iron target on the ground in horizontal position.
4.
Swing the coil over the target at a height of around 3 inches while slowly
increasing the
ATS
control.
5.
Stop when the nail responds as follows:
a. In
Tone
mode, the iron response is mostly low tone with some minor high
tone mixed in.
b. In
Mute
mode, the iron response is mostly silent with some minor high tone
breaking through.
c. In
Volcanic Sand
mode, the iron response is fully silent which is necessary to
reject volcanic ground.
6.
Finally, refine your setting and decrease the
Reject
control to obtain an iron
response low tone with some minor high tone mixed in.
7.
Optionally, test a US nickel to verify that it gives a high tone.
In setting up iron rejection, both the
ATS
and
Reject
controls affect each other and
should be adjusted together to achieve the desired rejection responses.
It is highly recommended that iron rejection is set up in the field using test targets.
USER CONTROLS
(Continued)
