Minelab Manticore, Instruction Manual

Page: 41 / 78

CONTENTS
41
Audio Theme
(Continued)
ENHANCED
The Enhanced Audio Theme is similar to Normal, but is
optimised for detecting in high EMI scenarios.
Weak detections like EMI chatter will remain audible, but
will have a modulated audio timbre that will sound more
'thin' or 'tinny' than stronger detections� This has the
effect of suppressing EMI chatter, making it easier to listen
'through', to hear non‑random signals that consistently
repeat with each swing� Larger signals from strong/shallow
targets will sound more 'robust' similar to the Normal Audio
Theme� This Audio Theme can also allow users to increase
Sensitivity (in EMI‑limited locations) higher than would be
possible using the Normal Audio Theme�
The pitch of audio responses is determined by the Target ID
as defined by the Target Tones setting
(page 44) �
Choose the amount of frequency modulation by changing
the Profile�
This Theme uses a ‘Reference’ threshold tone that blanks
for rejected targets (see
"'Reference' Threshold Tone" on
page 43 )� You can adjust the Threshold Level (Off by
default) and the Threshold Pitch�
DEPTH
The Depth Audio Theme is useful for improved target
separation at inland locations that contain high amounts
of ferrous trash.
The Target Tones setting is disabled when using
the Depth Audio Theme� To enable Target Tones,
change the Audio Theme to Normal or Enhanced�
The pitch of non‑ferrous targets varies continuously
according to the signal strength or depth of the target�
Weaker non‑ferrous signals will have a lower pitch and
stronger signals will have a higher pitch� Ferrous targets
will have a low pitch response�
The Ferrous Pitch, Minimum Pitch (non‑ferrous) and
Maximum Pitch (non‑ferrous) are adjustable� The amount of
volume modulation can be modified using the
Profile setting�
This theme uses a ‘Reference’ threshold tone that blanks
for rejected targets (see
"'Reference' Threshold Tone" on
page 43 )� You can adjust the Threshold Level (Off by
default) and Threshold Pitch�
The Depth Theme Pitch Settings
The Depth theme has additional unique settings that allow
you to control the pitch of ferrous tones, and to set the
minimum/maximum pitch of conductive tones�
The Depth pitch settings have a range from 1 to 64�
NOTE: The Ferrous Pitch cannot be set higher than the Min�
Pitch� If you cannot adjust the Ferrous Pitch (the arrows
are greyed‑out and there is an invalid button press tone),
increase the Min� Pitch setting�
PROSPECTING
The Prospecting Theme is useful when maximum
sensitivity to weak targets is beneficial, such as for gold
prospecting or hunting for fine jewellery at the beach. This
theme is best used at low trash sites.
The Target Tones setting is disabled when using the
Prospecting Audio Theme� To enable Target Tones,
change the Audio Theme to Normal or Enhanced�
The pitch of audio responses varies continuously according
to the signal strength (or depth) of the target, and whether
it is ferrous�
The Ferrous Tone setting allows the ferrous tones to be
turned Off� This means that when detecting in All Metal,
ferrous targets will not give a ferrous tone, and instead will
give a regular detection tone� This is a useful feature when
searching for gold, because very weak gold targets can be
pulled into the ferrous region by nearby ferrous targets or
by the ground signal from highly mineralised ground� By
turning Ferrous Tones Off, the gold signals will be more
clearly audible�
This theme uses a ‘True’ Threshold Tone that provides
maximum sensitivity to weak targets (see
"'True' Threshold
Tone" on page 43 )� You can adjust the Threshold Level
(Off by default) and Threshold Pitch�