基本信息
| 出生地 | Beijing China (Mainland) |
|---|---|
| 牌子的名字 | DADI |
| 模式的数量 | HU25/HU25C |
| 权力 | 电子 |
PCM tester Characteristics FullpathA-A(Analog-Analog)test ·Testport:Secondlineorforthlineaudiointerface ·HU25Csecondlineporthasthefeedingfunction ·Output,InputResistance:600Ω;Multipleresistances ·TestItems:Pointpowerlevel,frequencycharacteristics,powerlevelcharacteristics,idlenoise, interchannelcrosstalk,quantizingdistortion ·Near-endlooptestandelsewhererelativetestcanbedoneautomaticallyandupto30linesoftest resultscanbestoredautomaticallyandsenttoprintersasareportformtoprintorstoreinthe computer,only1minuteisneededtofinishalineofspeechchanneltest. ·AutocomparisonwithITU-Tsuggestedandanalyzedresultduringtest,realtimesoundreport whenunderguideline,markedidentificationonrecord. ·Operationmodesofmanualtest,monomialormultinomialautotest,autotestsofallitemsare provided ·Sendingsinusoidalsignalfrequencypointsrangeis2003600Hz,frequencypointssettings accordwithITU-Tsuggestions,frequencyinaccuracyislessthan0.2Hz,frequencycharacteristic inaccuracyislessthan0.1dB ·SignalRatedOutputRange:-72.5+11dBm,OperationInaccuracy:lessthan0.1dBA-D,D-AandD-DTests ·2Mdigitaloutputportcanoutputcodesof-59+3dBm2003600Hzdigitalsinusoidal sequence,speechchannelSignalingABCDcodecanbesetrandomly,outputcodepattern:Code HDB3,outputresistance:75Ω,unbalanced. ·2Mdigitalinputportcantestanyspeechchannellevelwithinaccuracylessthan0.15dB.Input CodePattern:CodeHDB3,inputresistance:highresistance2KΩ,unbalanced. ·Displayandprinttestresults ·Real-timemonitorsignalingABCDcodeofanyspeechchannel ·Soundandlightalarmwhennosignal,AIS,primeframedesynchronizing,multi-frame desynchronizingoccurs.
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