Minelab x-terra 305 Instruction Manual page 66

Low Battery Shutdown
A long announcement tune (descending
tones) will sound just before the detector shuts
down.
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.
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