Threshold Level - Minelab X-TERRA PRO Instruction Manual

Threshold Level

A threshold tone is a constant background
sound that is useful for hearing faint target
responses� Adjust the Threshold Level setting
to set the loudness of the threshold tone, or turn it Off�
Threshold Level changes are global�
The Threshold Level setting has a range from 0 to 25 with a
default setting of 0 (Off)�
ADJUST THE THRESHOLD LEVEL
1. Press the Settings button to navigate to the Threshold
Level setting�
2. Use the Minus (–) or Plus (+) buttons to adjust the
Threshold Level� Adjustment takes effect immediately,
so listen to the audio to select your preferred level�
CONTENTS
'REFERENCE' THRESHOLD TONE
A 'reference' threshold is a simple continuous background
tone that blanks when a Rejected Target ID is detected�
Without a reference threshold, a rejected target would be
silent, and you would not be made aware of the target's
existence�
For typical treasure detecting locations where there is
often a large amount of trash in the ground, constant audio
blanking may be disruptive, therefore using a Threshold
Level setting of 0 (Off) is recommended unless you want to
hear audio blanking�
THRESHOLD BLANKING
When a Rejected ID is detected, the Threshold tone 'blanks'
(becomes silent) to indicate that a rejected target is
underneath the coil�
If the Threshold Level is set to 0 (Off), you will not hear the
blanking of the Rejected ID's�
Audible Detection
Threshold
tone
Time 
Target with accepted ID
28
'Blanked' Detection
(no sound)
Target with rejected ID