User's Manual
6of9
19541P‐41(02‐11)
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Insomecircumstancesitmaybenecessaryto“purge”theU9920 ‐GPB ofsomeofitslinkedbelt
stations.Typicallypurgingisnotnecessaryunlesstherearemultiplegatewaysinthesame
vicinityandyouwishtoremoveabeltstationfromthisgatewayandlinktoadifferentgateway.
Agatewaycanlinkuptosixbeltstationswhereabeltstationcanbelinked toonlyonegateway
atatime.
FullPurge
Afullpurgeisthepurge methodemployedbytheU9920‐GPBandclears alllinksinthegateway.
Afterthisprocedurenobeltstations
willautomaticallyconnecttothisgatewayuntillinked.
FullPurgeprocedure
1. Powerdowngateway(seePower‐up/Power‐down).
2. PressandholdPTTbutton.Donotrelease.
3. Powerupthegateway(seePower‐up/Power‐down).
4. ReleasePOWERbutton.
5. ReleasePTTbutton.
6. StatusLEDwillflashredtoindicatesuccessfulpurge.
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AllDavidClark9900‐serieswirelessbeltstationsandbatteryoperatedcontrollers/gatewaysusea
3.7VLi‐Polymerrechargeablebattery.Thisbatteryisremovedbylooseningthebatteryrelease
screw(SeeFigure1).ThebatteriesarechargedwiththeA99‐04CRG4‐baybatterycharger
(41034G‐01).
Wheninstallingabattery,
takecaretoalignthebatteryproperlyandfullytightenthescrew(see
Figure3).