XITRON XT2640 - Updating the Firmware or the FPGA; Changing the Welcoming Screen; Data Logging

XT2640OperatingManual 13July2016 Page125of187
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8.
Anumericcharacterwhichdefinesifthemeasurementresultistobefollowedbytheapplicableunitscharacter(s)asfollows–
0:Nounitscharacter(s)willbeincluded.
1:Unitscharacter(s)willbeincluded.
9.
Upto5characterswhichdefinethetexttobeshownbeforethemeasurementresultinthiscell(thismaybeblankwhichhasthe
sameresultantcellasifthepreviousformatwasused).
23.6.3.5 EXAMPLECUSTOMSCREENASCIIFILE
Asimpleexampleofthecontentsofsuchafileis‐
C,0,0,3,1,255:255:255,,,MEASUREMENTS
C,2,0,1,1,255:255:255,,,Ch2
C,3,0,1,1,255:255:255,V:CH2,1
C,4,0,1,1,255:255:255,A:CH2,1
C,5,0,1,1,255:255:255,W:CH2,1
C,6,0,1,1,255:255:255,VA:CH2,1
C,7,0,1,1,255:255:255,PF:CH2,1
C,8,0,1,1,255:255:255,FREQ:CH2,1
Thissetsthescreentobesimilartothatshownbelow.
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23.6.4 UPDATINGTHEFIRMWAREORTHEFPGA
Thesefilesmusthaveaspecificfilename.
Thereareseveraltypesofupdatefiles;mostoftheseareassociatedwithupdatingthefirmwareortheFPGAtoanewlyreleased
updatefromXiTRON.FollowtheinstructionsprovidedwiththefirmwareorFPGAreleasetoimportandusethesefiles.
23.6.5 CHANGINGTHEWELCOMINGSCREEN
ThisfilemusthaveaspecificfilenameofWELCOME.IMGandisinaproprietarybinaryformat.
OneofthefileselectionpossibilitiesintheUPDATEtypeoffileimportistochangethewelcomingscreenshownontheXT2640when
itisturnedon.AnapplicationisprovidedwiththeXT2640allowingyoutoconvertastandardimagefileintotheformatneededfor
thisfile.Theimagemustbeexactly800pixelswideby480pixelshightobeusedbythisutility.
23.7 DATALOGGING
TheXT2640hasthecapabilityofdataloggingupto16userdefinedmeasurements(orsetsofharmonicsmeasurements)atauser
definedinterval.Thiscanbeperformedtooneofthefollowing–
1.
ToanexternalUSBDrive,usinganinternal32Mbytebuffertoreducetheimpactthatdrivespeedhasontheachievabledata
loggingrate.Themaximumrateofdataloggingwillbelimitedbythedrivespeed(seesection23.7.8).
2.
Totheinternal32Mbytebuffer.ThiswillbeautomaticallytransferredtotheconfiguredfileonanexternalUSBdrivewhenone
issubsequentlyconnected.Thisinternalbufferisvolatile,thecontentswillbelostifpowerisremovedfromtheXT2640orthe
XT2640isturnedoff.Thereisnorestrictiononthemaximumdataloggingrate(otherthanthelengthofthebuffer).
3.
ToaninternalmemoryintheXT2640.ThismemoryvariesinsizebetweenindividualXT2640instruments,butisatleast
2GBytesandmaybeupto4GBytesinlength.Thisisnon‐volatile,thatisthecontentswillnotbelostifpowerisremovedfrom
theXT2640ortheXT2640isturnedoff.Themaximumrateofdataloggingwillbeslightlylimitedbythememoryspeed(see
section23.7.8).
Note:
OlderXT2640instrumentswhichareupgradedtofirmwarewhichhasthiscapabilitymightnothavethecapabilityofdata
loggingtointernalmemory.ContactXiTRONfordetailsregardinganupgradeifthisisnotavailableanditisdesired.