14 Garrett Metal Detectors
ACE 400
i
™
15
IRON AUDIO
IRON AUDIO
Button
Iron Audio
is ON
Press and release the IRON AUDIO button to switch the Iron
Audio feature ON/OFF.
Iron Audio allows the user to hear discriminated iron
(normally silenced) in order to avoid being tricked into digging
an undesired target. Iron Audio also adjusts the cut-off
between low-tone and mid-tone audio
(see illustrations on
next page)
to better identify good targets. When Iron Audio is
on, iron targets will not only be heard, but they will produce
an even more distinctive response with multiple tones. For
example, a nail will produce several fast low tones as the
searchcoil passes over. A flat iron object like a bottle cap
or steel washer will produce a very distinctive Low-High-Low
response (see pg. 19 for more information).
Note:
Iron Audio applies only to the notched out pixels to
the left of the first accepted pixel within the 6-pixel iron range.
Therefore, it is only effective when at least the first pixel of
discrimination has been notched out.
Tip:
In areas with a lot of iron, it is recommended to switch
off Iron Audio. Otherwise, it may produce far too many signals.
If a target is detected with questionable or inconsistent
response, switch on Iron Audio to see if it is iron.
IRON AUDIO
OFF
:
Normal division of low, mid and bell tones.
19
40
60
19
Belltone
Belltone
Belltone
40
60
60
IRON AUDIO
OFF
: With two pixels of Discrimination notched out, all targets
below 19 are silent.
19
40
60
19
Belltone
Belltone
Belltone
40
60
60
IRON AUDIO
ON
: Targets below 19 are now heard as a low tone and targets
above 19 will produce a mid or bell tone.
19
40
60
19
Belltone
Belltone
Belltone
40
60
60
Refer to the illustrations below regarding the use of the Iron
Audio feature:
