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 handheld optical variable attenuator TE-VA301 communication device

TE-VA301handheldopticalvariableattenuatorisusedforcontinuouslyvariableopticalsignalattenuation.Astheattenuatorisusedinthelasersystemfortheon-linetesting,there,thereforeTE-VA301canbeusedinthedigitalsystemofcommunicationdevices(suchas:PHD,SDH)andalsointhesystemofadoptinganalogmodulation(CATV)

ApplicationTelecomMaintenanceCATVMaintenanceComprehensivecableconstructionsystemOpticalinstrumentsresearchanddevelopmentOpticalcommunicationeducationandlabtestingOtheropticalproject

FeaturesStepwiseattenuatingbycircumgyrateddial:attenuatingstep0.05dBProvidewiththefunctionofdisplayingdBanddBmattenuatingvalueAlternativefunctionof10minutesAuto-offwithoutoperationAfterofftheinstruments,thesystemwillhavethememorizingoftheattenuatingvalueandtheattenuatingstep,

inordertorestorethesystembacktothepreviousshutdownstatewhenopentheinstrumentsnexttime

Specification

Model

ModelA

ModelB

Attenuationrange(dB)

0~30

0~60

Uncertainty

+5%

Workingtemperature

-10~60oC

Storagetemperature

-25~70oC

Autoturnofftime(min)

10

Continueworkingtime

Morethan48hours

Power

RechargeableLibattery


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