XITRON XT2640 - Electrical Channel Input and Accuracy Specifications; Input Isolation Specifications; Voltage Measurement Specifications; Voltage Input Capability and Characteristics

XT2640OperatingManual 13July2016 Page166of187
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28 ELECTRICALCHANNELINPUTANDACCURACYSPECIFICATIONS
Specificationsarevalidunderthefollowingconditions‐
 Allspecificationsarevalidfollowinga20minutewarm‐upperiodafterturningpowerONintheXT2640,whenoperated
fromthespecifiedsourceofpowerandwithinthespecifiedenvironmentalconditions.
 AllspecificationsinthetablesofthissectionotherthanthoselabelledBaseScalingErrorarevalidforthelifetimeofthe
XT2640;BaseScalingErrorspecificationsarevalidforupto2yearsaftercalibrationinnormaluse,or6monthswhen
continuouslyusedabove75%ofthemaximumspecifiedvoltageorcurrentsignalrange.
 AllspecificationsarevalidattheXT2640terminals.
 DCfloorspecificationsassumethatAUTOZEROisON.IfAUTOZEROisOFFaddtheDCFloorspecificationperCfromthe
temperatureofthelastperformedINTDCZEROorwhenAUTOZEROwaslastON(whicheveroccurredlast).
 MAINSspecificationsarevalidforsignalswith45Hzto65Hzfundamentalwith20to100harmonicsconfiguredandwhen
usingAUTO‐TRACKbandwidthlimiting;otherwiseusetheAVIONICSorACspecificationsasapplicable.
 AVIONICSspecificationsarevalidforsignalswith300Hzto900Hzfundamentalwith20to62harmonicsconfiguredorfor
signalswith45Hzto65Hzfundamentalwith>100harmonicsconfigured,andwhenusingAUTO‐TRACKbandwidth
limiting;otherwiseusetheACorMAINSspecifications.
 AccuracyspecificationsarevalidforCrestFactors<100(withinpeakmeasurableinputsignalrangeandbandwidth
limitations).
 Harmonicsspecificationsarevalidfor<(10%/configurednumberofharmonics)cycle‐to‐cyclejitterinfundamental
frequencyandwitheachharmonic<(100%/harmonicnumber)ofthetotalsignal.
Note:
TheNoDamageinputsignalrangeisthatwhichwillnotcauseimmediatedamage.Continueduseoftheselevelsmay
reducereliabilityand/orfutureaccuracy.
TheMeasurableinputsignalrangeisthatwhichcanbemeasured(theNoDamagelimitsmaylimitthetimeforwhichthey
maybeapplied).Themaximummeasurablelevelshownisatypicalvalue;theactualmeasurablemaximumleveliswithin
±2%ofthatshown.
TheSpecifiedinputsignalrangeisthatofcontinuouslyappliedsignallevelsforwhichmeasurementsareguaranteedtobe
withinthespecifiedaccuracies.TheRMSlevelisalsothemaximumratedworkingsignallevelforsafetypurposes.
Accuracyspecificationsareguaranteedmaximumerrors.Youshouldroundthetotalmaximumerrorupwardstothenext
integercountofresolution(e.g.ifthetotalerroris18.3mVandthedataisreadwith1mVresolutionthenuse19mVasthe
maximumerror).
Allpercentagesare%ofreadingunlessotherwisedescribed.
Whenasignalhasmultiplesignificantfrequencycomponents(e.g.significantDCandACcomponents),addtherelevant
specificationsforeachsuchcomponent.
V
DC
,A
DC
,V
AC
,A
AC
,V
AC+DC
,A
AC+DC
,V
RDG
,A
RDG
etc.indicatetherelevantvoltage,currentetc.reading.
Histheharmonicorspectrumpointnumber.
Nistheconfigurednumberofharmonicsorspectrumpoints.
ForF
FUND
isthefrequencyofthesignalinkHz.
F
BW
isthefrequencyoftheuserbandwidthsettinginkHz.
28.1 INPUTISOLATIONSPECIFICATIONS
ValidforanyVterminaltoXT2640chassisground;anyAterminaltoXT2640chassisground;andbetweenanyVandanyAterminal.
Impedance >1GΩ||<30pF
Max.Voltage 4500V
PK
maxwithoutdamage
2500V
RMS
maxfor<1swithoutdamage
1000V
RMS
maxcontinuousratedworkingvoltage(CATI/II)
600V
RMS
maxcontinuousratedworkingvoltage(CATIII)
300V
RMS
maxcontinuousratedworkingvoltage(CATIV)
28.2 VOLTAGEMEASUREMENTSPECIFICATIONS
Thespecificationsforvoltageareindependentofthecurrentinputoptioninstalledintherespectivechannel.
28.2.1 VOLTAGE INPUTCAPABILITYAND CHARACTERISTICS
Specification SChannelType AChannelType LChannelType WChannelType
NoDamageVoltage
Range
<1ms <3000V
RMS
andV
PK
 <500V
RMS
and3000V
PK
 <3000V
RMS
andV
PK

<100ms <2000
V
RMS
<300V
RMS
 <1500V
RMS
<5s <1500
V
RMS
<250V
RMS
 <1000V
RMS
Continuous <1000
V
RMS
<160V
RMS
 <650V
RMS
XT2640Unpowered Asabove
MeasurableVolta
g
eRan
g
e<1803
V
RMS
and
V
PK
<182.3
V
RMS
and
V
PK
 <1803
V
RMS
and
V
PK
SpecifiedVolta
g
eRan
g
e <1000
V
RMS
and<1750V
PK
<160
V
RMS
and<175
V
PK
 <650
V
RMS
and<1750V
PK
ImpedanceBurden 1.201MΩ±0.25% 121
k
Ω±0.25% 399.5
k
Ω±0.25%
3dBBandwidth(typical) 900
k
Hz 3MHz