Minelab X-Terra 50 Manual page 59

Target Response
This is the sound given by the detector when
a target is located and not discriminated
against (rejected). Generally a target that
is highly conductive (e.g. a large silver coin)
emits a high tone beep. A low tone beep
is produced for ferrous targets.
Pinpoint Response
When in pinpoint, the detector emits a
variable tone, that increases in pitch and
volume as the coil gets closer to the target.
Noise
A random jittery sound indicates that the
detector is picking up external interference.
Sensitivity or noise cancel* should be
adjusted.
False Detections
A partial or chopped non-repeatable signal.
Two dashes will indicate on the LCD to
indicate a rejected target.
5
AL
Low Medium
The X-Terra 30 discrimination segments are
1
separated by 3 different tones of sound
2
3
4
5
AL
Low Medium
Low
The X-Terra 50 discrimination segments are
separated by 4 different tones of sound
59
30
High
50
Medium High
High