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Fluke 45 user manual Sample Program Using the RS-232Computer Interface, 5-30, aam23f.eps

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Users Manual

Sample Program Using the RS-232 Computer Interface

Figure 5-5 is an annotated BASIC A program, written for an IBM PC (or compatible), that demonstrates how the meter can be used with the RS-232 computer interface.

aam23f.eps

Figure 5-5. Sample Program for RS-232 Computer Interface

5-30

Page 86

Image 86

Fluke 45 user manual Sample Program Using the RS-232Computer Interface, 5-30, aam23f.eps

Contents

Dual Display Multimeter LIMITED WARRANTY & LIMITATION OF LIABILITY Declaration of the Manufacturer or Importer Safety ClassInterference Information Introduction Table of ContentsTitle Getting StartedOperating the Meter Using the Computer Interface ApplicationsMaintenance AppendicesList of Tables TitlePerformance Tests for A Current Functions Replacement PartsPerformance Tests for mA Current Functions List of Figures TitleIntroducing the Fluke 45 Dual Display Multimeter IntroductionChapter WWarningChapter 1 Introduction Options and AccessoriesWhere to go from Here Chapter 4 Applications Chapter 6 MaintenanceChapter 2 Getting started AppendicesPage MULTIMETER SAFETY WWARNINGTO AVOID ELECTRICAL SHOCK OR OTHER INJURY Getting Started Adjusting the HandleLine Power IntroductionFigure 2-1.Front Panel Figure 2-2.Rear PanelUsing the Pushbuttons Turning the Meter onFigure 2-4.Summary of Basic Pushbutton Operations Taking Some Basic Measurements Selecting a Measurement RangeAutomatic Input Terminal Selection WWarningMeasuring Current Diode/Continuity TestingMeasuring Voltage, Resistance, or Frequency Getting Started FREQFREQ Taking Some Basic MeasurementsCIRCUIT Figure 2-7.Continuity TestingFigure 2-8.Diode Testing Note This is a Diode Test FunctionOperating the Meter Under Battery Power Optional Operating the Meter Under Battery Power OptionalRack Mounting 2-10 Chapter Operating the Meter From the Front PanelFront Panel Operations IntroductionSecondary Display DisplayPrimary Display EXT TRG REMOTE SMFMAX dB REL AUTO MIN HOLDInput Terminals Figure 3-4.Input TerminalsE, U, T Selecting a Measurement FunctionRanging AutorangingFigure 3-5.Function Selection Buttons Operating the Meter From the Front Panel RangingFrequency Ranging Measuring FrequencyManual Ranging Operating the Meter From the Front Panel Frequency Measurement RatesFrequency Sensitivity Selection Measuring FrequencySelecting A Function Modifier K, I, H, JOperating the Meter From the Front Panel REL Relative Readings ModifierWWarning Selecting A Function ModifierdB Decibels and Audio Power Modifier MN MX Minimum Maximum Modifier Using Function Modifiers in CombinationHOLD Touch Hold Modifier Using the SButton Selecting A Measurement Rate Rate3-15 Operating the Meter From the Front PanelSelecting A Function Modifier PushbuttonsUsing The Compare Comp Function The List and Number EditorsUsing the List Editor Using the Number Editor Changing the Power-UpConfiguration Power-UpConfigurationFactory Settings of Power-UpConfiguration Calibration Chapter Using the Dual DisplayApplications IntroductionUsing Measurement Functions in Combination Using the Dual Display ApplicationsResponse Times How the Meter Makes Dual Display Measurements How the Meter Makes Dual Display MeasurementsMeas Function Update Rate in the Dual Display Mode External TriggerThermal Voltages True RMS Measurements When Measuring ResistanceTwo-WireConfiguration Correcting for Test Lead ResistanceEffects of Internal Noise in AC Measurements Calculated AC + DC RMS MeasurementsTrue RMS Measurements Figure 4-3.Waveform Comparison ChartApplications 4-114-12 Computer Interfaces Operating the Meter Using the Computer InterfaceLocal and Remote Operations ChapterSetting Communication Parameters RS-232 RS-232 Print-OnlyMode Character Echoing and Deletion Device Clear Using C CNTRL CCabling the Meter to a Host or Printer RS-232 RS-232PromptsEnabling the IEEE-488Interface Installing the IEEE-488InterfaceIEEE-488Operating Limitations Addressing the MeterInstallation Test for IEEE-488Operations Getting Started With An Installation TestInstallation Test for RS-232Operations Cabling the Meter to a HostInput Strings How the Meter Processes InputIf Test Fails Input TerminatorsSending Numeric Values to the Meter Sending Command Strings to the MeterTypical IEEE-488Input Strings 1.Commands to configure the meter if any 5-10 Figure 5-1.Typical IEEE-488Input StringsExternal Triggering from the Front Panel How the Meter Processes OutputTriggering Output Setting the Trigger Type Configuration External Triggering via the Computer InterfaceTable 5-3.Trigger Type Write Command Event Status Enable RegisterRead Command Enable RegisterPage Event Status and Event Status Enable Registers 7 6 5 4Status Byte Register Reading the Status Byte RegisterService Request Enable Register Computer Interface Command Set IEEE-488Capabilities and Common Commands5-20 Table 5-9. IEEE-488Common CommandsCommand Table 5-8. IEEE-488Interface Function SubsetsTable 5-10. IEEE-488Common Commands cont Operating the Meter Using the Computer InterfaceComputer Interface Command Set CommandTable 5-11.Function Commands and Queries Function Commands and QueriesFunction Modifier Commands and Queries CommandsCommand Operating the Meter Using the Computer InterfaceComputer Interface Command Set Table 5-12.Function Modifier Commands and QueriesDescription Command5-24 Computer Interface Command Set Range and Measurement Rate Commands and QueriesOperating the Meter Using the Computer Interface 5-255-26 Measurement QueriesTRIGGER 5, unexpected results will be obtained Compare Commands and Queries Trigger Configuration CommandsTable 5-17.Miscellaneous Commands and Queries Miscellaneous Commands and QueriesCommand 5-28Computer Interface Command Set RS-232Remote/Local ConfigurationsOperating the Meter Using the Computer Interface Commandaam23f.eps Sample Program Using the RS-232Computer Interface5-30 aam24s.tif Operating the Meter Using the Computer Interface5-31 5-32 aam25s.tifaam26s.tif Operating the Meter Using the Computer Interface5-33 5-34 aam27s.tifOperating the Meter Using the Computer Interface 5-35Line Fuse MaintenanceCleaning WWarningTesting Current Input Fuses Current Input FusesWWarning Replacing the 100 mA Input FuseReplacing the 10 A Input Fuse WWarningSelf-TestDiagnostics and Error Codes Performance TestsService Input Level FunctionRange Rate FrequencyReplacement Parts Replacement PartsMaintenance Quantity Fluke Part Number Part DescriptionTable 6-5.Replacement Parts cont DESCRIPTION FLUKE PART NOPage AppendicesAppendix SpecificationsPage Display Counts and Reading Rates SpecificationsAppendix A RS-232and IEEE-488Reading Transfer RatesNormal Mode Rejection Ratio DC VoltageInput Impedance Common Mode Rejection RatioAppendices Decibel ResolutionTrue RMS AC Voltage, AC-Coupled Maximum InputAC + DC Voltage Accuracy Decibel Reference ResistanceMaximum Crest Factor Input ImpedanceAppendices DC CurrentAC Current Maximum InputMaximum Input AccuracyMaximum Crest Factor RangeFrequencyOpen Circuit Voltage OhmsDiode Test/Continuity Input ProtectionSensitivity Level of AC Current FrequencySensitivity of AC Voltage Open Circuit VoltageAppendices EnvironmentalSpecifications A General OptionsASCII/IEEE-488Bus Codes Appendix BPage Appendices ASCII/IEEE-488Bus Codes BImplementation of IEEE Standard IEEE-488.2Device Documentation RequirementsAppendix C IntroductionDevice-specificcommands used All queries generate a response when parsedNo commands are coupled NUMERIC RESPONSE DATAMEASUREMENT Format 1 NR3 NUMERIC RESPONSE DATAFormat 2 NR3 NUMERIC RESPONSE DATA UNIT Volts dcThe *RDT and *RAT? commands are not implemented There are no additional data structures