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Fluke 45 user manual Measuring Frequency, Manual Ranging, Frequency Ranging

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Manual Ranging

45

Users Manual

Press to Toggle In and Out of Manual Ranging.

"AUTO" Annunciator Turns off when Manual Range Selected.

Press to Enter Manual Range and Up Range

Press to Enter Manual Range and Down Range

AUTO

45 DUAL DISPLAY MULTIMETER

V 10A

	600V CAT I	!
	1000V CAT I
	COM	100
	COM	mA
		mA

	FUSE F1	V
	500 mA	V
	500 mA
	F 250V

FUSEDV

					CAL
					ENABLE
A			REL	dB	2ND
			REF#	REF	LOCAL
A	FREQ AUTO		HOLD	MN MX	RATE
			HOLD	MN MX	RATE
	COMP	HI	LO THRESH	ADDR	BAUD

POWER

aam14f.eps

Figure 3-6. Range Selection Buttons

Manual Ranging

Press Eto toggle in and out of manual ranging. The range you are in when you enter the manual range mode becomes the selected range.

In manual range, the meter remains in the selected range regardless of input. Press Eto toggle back to autoranging. Manual ranging can only be performed on readings shown on the primary display; the secondary display always autoranges.

Press Uto up range. If the Uis pressed when the meter is still in autorange, manual ranging is selected, the AUTO annunciator turns off, and the next higher range is selected (if there is one).

Press Tto down range. If the Tis pressed when the meter is still in autorange, manual ranging is selected, the AUTO annunciator turns off, and the next lower range is selected (if there is one).

Measuring Frequency

(F)

Frequency Ranging

Frequency measurements from 5 Hz to > 1 MHz are automatically ranged so that a frequency measurement is always displayed with maximum resolution.

If the frequency function (FREQ) is selected in the primary display, press the Uor T to manually select a range. (Manual ranging is not allowed in the secondary display.) If you select a frequency range manually, frequency measurements that exceed the full scale value of that range cause "OL" (overload) to be displayed. Refer to Table 3-5 for frequency ranges and full scale values.

3-8

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Fluke 45 user manual Measuring Frequency, Manual Ranging, Frequency Ranging

Contents

Dual Display Multimeter LIMITED WARRANTY & LIMITATION OF LIABILITY Declaration of the Manufacturer or Importer Safety ClassInterference Information Table of Contents TitleIntroduction 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 TitleIntroduction ChapterIntroducing the Fluke 45 Dual Display Multimeter WWarningChapter 1 Introduction Options and AccessoriesWhere to go from Here Chapter 6 Maintenance Chapter 2 Getting startedChapter 4 Applications AppendicesPage MULTIMETER SAFETY WWARNINGTO AVOID ELECTRICAL SHOCK OR OTHER INJURY Adjusting the Handle Line PowerGetting Started IntroductionFigure 2-1.Front Panel Figure 2-2.Rear PanelUsing the Pushbuttons Turning the Meter onFigure 2-4.Summary of Basic Pushbutton Operations Selecting a Measurement Range Automatic Input Terminal SelectionTaking Some Basic Measurements WWarningMeasuring Current Diode/Continuity TestingMeasuring Voltage, Resistance, or Frequency FREQ FREQGetting Started Taking Some Basic MeasurementsFigure 2-7.Continuity Testing Figure 2-8.Diode TestingCIRCUIT Note This is a Diode Test FunctionOperating the Meter Under Battery Power Optional Operating the Meter Under Battery Power OptionalRack Mounting 2-10 Operating the Meter From the Front Panel Front Panel OperationsChapter IntroductionSecondary Display DisplayPrimary Display REMOTE SMF MAX dB REL AUTOEXT TRG MIN HOLDInput Terminals Figure 3-4.Input TerminalsSelecting a Measurement Function RangingE, U, T AutorangingFigure 3-5.Function Selection Buttons Operating the Meter From the Front Panel RangingFrequency Ranging Measuring FrequencyManual Ranging Frequency Measurement Rates Frequency Sensitivity SelectionOperating the Meter From the Front Panel Measuring FrequencySelecting A Function Modifier K, I, H, JREL Relative Readings Modifier WWarningOperating the Meter From the Front Panel 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 RateOperating the Meter From the Front Panel Selecting A Function Modifier3-15 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 Using the Dual Display ApplicationsChapter 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 When Measuring Resistance Two-WireConfigurationTrue RMS Measurements Correcting for Test Lead ResistanceEffects of Internal Noise in AC Measurements Calculated AC + DC RMS MeasurementsFigure 4-3.Waveform Comparison Chart ApplicationsTrue RMS Measurements 4-114-12 Operating the Meter Using the Computer Interface Local and Remote OperationsComputer Interfaces ChapterSetting Communication Parameters RS-232 RS-232 Print-OnlyMode Device Clear Using C CNTRL C Cabling the Meter to a Host or Printer RS-232Character Echoing and Deletion RS-232PromptsInstalling the IEEE-488Interface IEEE-488Operating LimitationsEnabling the IEEE-488Interface Addressing the MeterGetting Started With An Installation Test Installation Test for RS-232OperationsInstallation Test for IEEE-488Operations Cabling the Meter to a HostHow the Meter Processes Input If Test FailsInput Strings 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 Event Status Enable Register Read CommandWrite 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 CommandsTable 5-9. IEEE-488Common Commands Command5-20 Table 5-8. IEEE-488Interface Function SubsetsOperating the Meter Using the Computer Interface Computer Interface Command SetTable 5-10. IEEE-488Common Commands cont CommandFunction Commands and Queries Function Modifier Commands and QueriesTable 5-11.Function Commands and Queries CommandsOperating the Meter Using the Computer Interface Computer Interface Command SetCommand Table 5-12.Function Modifier Commands and QueriesDescription Command5-24 Range and Measurement Rate Commands and Queries Operating the Meter Using the Computer InterfaceComputer Interface Command Set 5-255-26 Measurement QueriesTRIGGER 5, unexpected results will be obtained Compare Commands and Queries Trigger Configuration CommandsMiscellaneous Commands and Queries CommandTable 5-17.Miscellaneous Commands and Queries 5-28RS-232Remote/Local Configurations Operating the Meter Using the Computer InterfaceComputer Interface Command Set 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 5-35Maintenance CleaningLine Fuse WWarningTesting Current Input Fuses Current Input FusesReplacing the 100 mA Input Fuse Replacing the 10 A Input FuseWWarning WWarningSelf-TestDiagnostics and Error Codes Performance TestsService Function Range RateInput Level FrequencyReplacement Parts MaintenanceReplacement Parts Quantity Fluke Part Number Part DescriptionTable 6-5.Replacement Parts cont DESCRIPTION FLUKE PART NOAppendices AppendixPage SpecificationsPage Specifications Appendix ADisplay Counts and Reading Rates RS-232and IEEE-488Reading Transfer RatesDC Voltage Input ImpedanceNormal Mode Rejection Ratio Common Mode Rejection RatioDecibel Resolution True RMS AC Voltage, AC-CoupledAppendices Maximum InputDecibel Reference Resistance Maximum Crest FactorAC + DC Voltage Accuracy Input ImpedanceDC Current AC CurrentAppendices Maximum InputAccuracy Maximum Crest FactorMaximum Input RangeFrequencyOhms Diode Test/ContinuityOpen Circuit Voltage Input ProtectionFrequency Sensitivity of AC VoltageSensitivity Level of AC Current Open Circuit VoltageAppendices EnvironmentalSpecifications A General OptionsASCII/IEEE-488Bus Codes Appendix BPage Appendices ASCII/IEEE-488Bus Codes BIEEE-488.2Device Documentation Requirements Appendix CImplementation of IEEE Standard IntroductionAll queries generate a response when parsed No commands are coupledDevice-specificcommands used NUMERIC RESPONSE DATAFormat 1 NR3 NUMERIC RESPONSE DATA Format 2 NR3 NUMERIC RESPONSE DATA UNITMEASUREMENT Volts dcThe *RDT and *RAT? commands are not implemented There are no additional data structures