AplabPsophometerisaportableunitdesignedfortheuseoftestingtelecommunicationequipment. IthasPsophometricfilter,whichhasthefrequencyresponseoftheweighingnetworkbasedontheCCITTrecommendationsandfrequencyresponsecharacteristicsforunweightedmeasurements.Theadditionalfeaturesincludedinthismodelare, Recorderout availableattherearpanelforplottingaresponsecurve,built-instablecalibrationsignalforcalibrationcheckandLoBatteryfacilitytochecktheBatterycondition. Featuresl CompactandPortableforFieldApplicationl ExtremelySensitiveandAccuratel WeightedandFlatFrequencyResponseasperCCITTStandardl HighlyStableInternalCalibrationSignall MeasurementofMetallicNoise,LongitudinalNoise,LevelandTransmissionLossl OveraTransmissionLinel OperatedonMains/InternalBatteryoronExternal6VDCSourcel Built-in PowerHum measurementfacilityl RecorderOutputAvailablel I/PImpedance600,1120ohmsorHiSelectablel 31/2DigitLCDDisplayl LoBattery Indication TechnicalSpecificationsFrequencyRange:a)WeightedMode:15Hzto6KHzasspecifiedbyCCITT.b)UnweightedMode:15Hzto10KHz.MeasuringRange:a)dBm:-90dBmto0dBm.b)Voltage:30 Vto1V.Min.MeasurableValue:10 V(-98dBm).CalibrationAccuracyat:0to-60dBm: 0.5dB.800Hz-60to-90dBm: 1.0dB.Display:31/2DigitLCDtype.InputImpedance:600ohms,1120ohmsbalanced, Hi .FrequencyResponseof:AccordingtoCCITTweightingcoefficientforTelephonecircuits. PsophometricMeasurements FrequeRelativeWeigLimitHzdB dB16.6-85 50-632100-412200-212300-10.61400-6.31500-3.61600-21700-0.91800009000.611K111.2K011.4K-0.911.6K-1.711.8K-2.412.0K-312.5K-4.213K-5.613.5K-8.524K-1534.5K-2535K-3636K-433 RecorderFacility:100 Aat0dBm1120impedance.Power: a)230VAC 10%,47-53Hz.Optional115VAC 10%,57-63Hz.b)Internalrechargeable6Vbattery.c)Externalbatteryoperation.Dimensions:265(W)x105(H)x356(D)mmapprox.Weight:4Kg.approx.withbattery.StandardAccessories:InstructionManual-1No.DualBananatoDualBananaCable-1NoDualBananatoBNC(M)Cable-1No.DualBananatoAlligatorClip-1No.Ext.BatteryJackCable-1No.