Data Sheet

USBProtocolSuiteUserManual 247
GeneralRecordingOptions TeledyneLeCroyCorporation
5.2.5 Connected Device Name
Enterauser‐friendlynamefortheDUTand/orHUTsothatitmakesreadingtheTrace
easier.Forexample,theDUTcouldbe"AcmeHD",andtheHUTcouldbe"CherryPC".
5.2.6 Recording Scope (Voyager, Advisor T3 and Mercury)
Selecteither:
 ConventionalSingleBufferRecording:SelectBufferSize(seebelow).Theana‐
lyzerlimitsthedataamountcapturedtotheselectedbuffersize.Usethe
Trigger Positionslider(seebelow)tocontrolthedataamountscapturedpre‐
triggerandpost‐trigger.
OR
 SpooledRecording:Theanalyzerbeginsrecordingdatatotheanalyzermemory
whentherecordbuttonispressed.Theentireanalyzermemory(2GBor4GB)is
usedtobufferdatawhilesimultaneouslyuploadingthetracefiletoanattached
storagedevice.
SetRecordingSizeLimits.IfyouuseSnapshot,youcanoptionallyuseRecordforan
elapsedtimeorRecordanumberofmegabytes.
IfyouuseManualTriggerorEventTrigger,youcanoptionallyusetheUntil Triggered,plus
optionstoenterpost‐triggerlimitsbymegabytesorelapsed time.Theseoptionsallow
youtospecifyatriggereventtostarttherecording.Whentheseoptionsareused,the
triggerpositionsliderisnotactive.Thetriggereventiswithinthefirst100packets.The
balanceofthememorycapturestrafficoccurringposttrigger.
Note:YoucanuseSnapshot,ManualTrigger,orEventTriggertriggermodewitheitherRecording
Scope:ConventionalSingleBufferRecordingorSpooledRecording.
Note:WhencapturingSSorSS+trafficwithSpooledRecording,thetrafficratemayoverflowthe
system'sabilitytouploaddatatodisk.Intheeventofoverflow,theanalyzerstopstherecording
automatically,evenifthetriggereventhasnotyetoccurred.Thiscanoccurin3.1trafficaswell
asin2.0traffic.Theanalyzerdoesnotdropdataorleavegapsintherecording.Instead,it
automaticallyuploadsallthetrafficstoredinmemory.Youmustmakesurethatthetrafficbeing
recordeddoesnotoverrunthebufferinthismode,byeitheradjustingtheactualdata
transmissionsbetweenthehostanddevice,orbyaddingfilterstotheanalyzerrecordingto
reducethequantityofdatapersecondthattheanalyzeriscapturinganduploadingtothe
Analyzerhostmachine.
5.2.7 Buffer Size
Youcanadjustthesizeoftherecordingbufferfromaverysmallsizeuptothemaximum
availableinyourproduct.Themaximumvaluesselectedmaybeslightlysmallerthanthe
entirebuffersizeduetoaverysmallamountofoverhead(likeyouseeinHardDisk
sizing).