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PTT
The PTT button allows the user to activate the headset's microphone momentarily while
depressed, for communication on the wireless intercom. For more information see the user
manual for the appropriate controller or gateway.
Low Battery
Under typical conditions, the battery in the belt station will last up to 24 hours or longer. A voice
alert will indicate to the user that the battery is running low. Additionally the Status LE will turn
red. At this point, approximately 1 hour of operation remains.
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In some circumstances it may be necessary to “purge” the U9912-BSW of its known controller or
gateway. Typically purging is not necessary unless there are multiple controllers or gateways in
the same vicinity and you wish to link a belt station to a different controller or gateway. A belt
station can be linked to only one controller or gateway at a time.
Purge Procedure
1. Power down belt station (see Power-up/Power-down).
2. Press and hold PTT button. o not release.
3. Power up the belt station (see Power-up/Power-down).
4. Release POWER button.
5. Release PTT button.
6. A voice alert will indicate that the connection has been deleted.
When this procedure is complete, the belt station will not automatically connect to a
controller/gateway and must be linked again.
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All avid Clark 9900-series wireless belt stations and battery operated controllers use a 3.7V Li-
Polymer rechargeable battery. This battery is removed by loosening the battery release screw
(See igure 1). These batteries are charged with the A99-04CRG 4-bay battery charger (41034G-
01).
When installing a battery, take care to align the battery properly and fully tighten the screw (see
igure 4).
