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XT2640OperatingManual 13July2016 Page5of187
21.7
IN,MIDANDOUTTOTALPOWERANDEFFICENCYDATAINAGROUPOFUNITS..........................................................................................................114
22 SYNCHRONIZINGMEASUREMENTSBETWEENVPAS........................................................................................................................115
23 USINGAUSBDRIVE......................................................................................................................................................................................117
23.1 DRIVECOMPATIBILITY............................................................................................................................................................................................................117
23.2 CHECKINGDRIVECOMPATIBILITY.........................................................................................................................................................................................117
23.3 FILES.........................................................................................................................................................................................................................................118
23.4 CHECKINGTHEDRIVEFILESTRUCTURE...............................................................................................................................................................................118
23.5 EXPORTINGFILESTOADRIVE................................................................................................................................................................................................118
23.5.1 ScreenImageFile(.BMPExtension).......................................................................................................................................................................119
23.5.2 Binary(.CFGExtension)Files.....................................................................................................................................................................................119
23.5.3 CommaSeparatedValue(.CSVExtension)Files................................................................................................................................................119
23.6 IMPORTINGFILESFROMADRIVE...........................................................................................................................................................................................122
23.6.1 ImportingBinaryConfiguration,CustomScreenandHarmonicLimitsFiles......................................................................................122
23.6.2 CreatingandImportinganASCIIHarmonicsLimitsFile..............................................................................................................................123
23.6.3 CreatingandImportinganASCIICustomScreenDefinitionFile..............................................................................................................123
23.6.4 UpdatingtheFirmwareortheFPGA.......................................................................................................... ............................................................125
23.6.5 ChangingtheWelcomingScreen.............................................................................................................................................................................125
23.7 DATALOGGING........................................................................................................................................................................................................................125
23.7.1 ConfiguringtheDataLog............................................................................................................................................................................................126
23.7.2 ConfiguringDataLoggingTiming..........................................................................................................................................................................127
23.7.3 ConfiguringDataLoggingRecordContents.......................................................................................................................................................127
23.7.4 StartingandStoppingDataLogging.....................................................................................................................................................................128
23.7.5 ClearingtheDataFromaCompletedUnsavedDataLog..............................................................................................................................128
23.7.6 ViewingDataLoggingStatus....................................................................................................................................................................................128
23.7.7 ExportingaDataLogfromtheInternalMemory.............................................................................................................................................129
23.7.8 InternalBufferUsage....................................................................................................................................................................................................129
23.7.9 OptimizingandTestingFileWriteSpeed.............................................................................................................................................................129
24 USINGTHEXT2640FROMANINTERFACE...........................................................................................................................................131
24.1 COMPUTERCONTROLOFTHEXT2640................................................................................................................................................................................131
24.1.1 RS232(Serial)Interface..............................................................................................................................................................................................131
24.1.2 LAN(Ethernet)Interface.............................................................................................................................................................................................132
24.1.3 USBInterface................................ ....................................................................................................................................................................................134
24.1.4 GPIBInterface..................................................................................................................................................................................................................137
24.2 COMMANDSYNTAX..................................................................................................................................................................................................................138
24.2.1 SpecialCharacters..........................................................................................................................................................................................................138
24.2.2 FieldswithinaCommand............................................................................................................................................................................................139
24.3 RESPONSESTOCOMMANDS....................................................................................................................................................................................................140
24.3.1 ResponseFields................................................................................................................................................................................................................140
24.4 COMMANDKEYWORDSANDFIELDS......................................................................................................................................................................................141
24.4.1 InterfaceClearCommands.........................................................................................................................................................................................141
24.4.2 Local/RemoteStateControlCommands..............................................................................................................................................................141
24.4.3 ErrorRegisterQueryCommands.............................................................................................................................................................................141
24.4.4 UnitandChannelIdentificationQueryCommands..........................................................................................................................................142
24.4.5 GPIBSpecificCommands.............................................................................................................................................................................................142
24.4.6 DateandTimeControlandQueryCommands...................................................................................................................................................143
24.4.7 SystemPreferencesSetandQueryCommands..................................................................................................................................................143
24.4.8 MeasurementStateControlandQueryCommands.........................................................................................................................................144
24.4.9 MeasurementConfigurationEditCommands....................................................................................................................................................145
24.4.10 MeasurementConfigurationQueryCommands................................................................................................................................................149
24.4.11 ConfigurationSaveandLoadCommands............................................................................................................................................................151
24.4.12 HarmonicsLimitsConfigurationandConfigurationQueryCommands.................................................................................................152
24.4.13 DCZeroControlandQueryCommands.................................................................................................................................................................152
24.4.14 CustomScreenConfigurationandConfigurationQueryCommands.......................................................................................................152
24.4.15 MeasurementResultsQueryCommands...............................................................................................................................................................153
24.5 RDEFMEASUREMENTDEFINITIONFIELDSUB‐FIELDS....................................................................................................................................................154
24.6 DDEFMEASUREMENTDEFINITIONFIELDSUB‐FIELDS....................................................................................................................................................157
25 INSIDETHEXT2640.....................................................................................................................................................................................160
25.1 GENERALMEASUREMENTMETHODS....................................................................................................................................................................................160
25.2 CHANNELCIRCUITRY...............................................................................................................................................................................................................161
25.3 SAMPLINGCONTROL...............................................................................................................................................................................................................161
25.4 CHANNELMEASUREMENTS....................................................................................................................................................................................................161
25.5 VPAMEASUREMENTS............................................................................................................................................................................................................162
25.5.1 VPAFundamentalFrequency..................................................................................... ...............................................................................................162
25.5.2 VPAAmplitudeMeasurements......................................................................................................... .........................................................................162
25.6 DATACOLLECTION..................................................................................................................................................................................................................162
25.7 INTEGRATEDDATA..................................................................................................................................................................................................................163
25.8 DATALOGGING........................................................................................................................................................................................................................163

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