User's Manual

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 5of10 
19541P‐44(02‐11)
Itisalsoimportanttoproperlyweartheheadsetandcorrectlypositionthemicrophone.For
optimumnoise‐cancellingperformance,positionthemicrophone1/8”to1/4”(3‐6mm)from
yourlips.
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Figure3:WearingtheHeadset
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VOXadjustment
TheU9911‐BSChasaninnovativevoiceactivation(VOX)system.VOXisintendedtoprevent
backgroundnoisefrombeingunintentionallypickedupbythemicrophonewhiledetectingand
allowingvoicecommunications.TheVOXknob(seeFigure1)controlsthethresholdatwhich
the
micbecomes“hot”.Whenthemicishotyouwillhearyourownvoiceandotherconnectedusers
willhearyouaswell.PressingthePTTbuttonwillautomaticallymakethemi crophone“hot”for
aslongasthePTTishelddown,regardlessofVOXsetting.
VOXBasics
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• VOXknobfullyclockwise(CW):  Micisoff
• VOXknobfullycounter‐clockwise(CCW): Micis"hot"
• VOXknobin‐betweenfullCWandfullCCW: VOXenabled
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VOXAdjustmentProcedure
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1. Ensurethatthecontrollerislinkedwithabeltstation(LEDflashinggreen).
2. Standinthenoisyenvironmentwhereyouwillbeusingthesystembutdonotspeak
.
3. TurnVOXknobfullycounter‐clockwise.Youwillhearacontinuoustone.
4. Whilecontinuingnottospeak,slowlyturntheVOXknobclockwiseuntilthetonestops.
5. VOXisnowoptimallysetforyourenvironment.
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Ifyoumovetoanotherlocation,youmaywishtorepeat
theaboveprocedure.
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