13
Volume and Threshold Adjustment
Volume Control
Use the Volume Plus (+) or Minus (-) buttons to adjust
the maxiumum audio level produced by a large signal.
This does not affect the audio level or sensitivity of
a faint signal (i.e. Volume is a “limiter” and not a gain
control). Axiom Volume is adjustable between 0 (no
audio output) and 24. The default setting is 24.
Threshold
Use the Threshold Plus (+) or Minus (-) buttons to adjust
the Threshold—the constant audio background “hum”
that is added to the target response. Axiom Threshold is
adjustable between -9 and 25. The default setting is 15.
It is recommended the Threshold be set to a barely
audible level, or just below, based on hearing ability
and surrounding audio conditions. Faint targets may
only create a small variation in the audio; therefore
running with a high Threshold level may obscure such
faint signals. Setting the Threshold level too low may
prevent faint signals from being heard. Readjust the
audio Threshold level as conditions change (i.e. strong
winds, surf noise, etc.) that affect your ability to hear the
background hum at a barely audible level.
Plus / Minus buttons for
Volume adjustment
Plus / Minus buttons for
Threshold adjustment
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