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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