Fluke fluke123 user manual Selecting AC-Coupling, Reversing the Polarity of the Displayed Waveform

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Fluke 123

Users Manual

Selecting AC-Coupling

Use AC-coupling when you wish to observe a small AC signal that rides on a DC signal.

Reversing the Polarity of the Displayed Waveform

To invert the input A waveform, do the following:

￿

 

 

 

 

Open the SCOPE INPUTS menu.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Highlight AC.

 

 

 

(4x)

Accept AC-coupling for INPUT A.

 

 

 

 

 

 

 

 

 

￿

 

 

 

 

Open the SCOPE INPUTS menu.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Select NORMAL (of INPUT A).

Highlight INVERT.

 

 

 

(3x)

Accept inverted waveform

 

 

 

 

 

 

 

 

display.

 

 

 

 

 

 

 

 

 

 

 

For example, a negative-going waveform is displayed as positive-going, providing a more meaningful viewing perspective in some cases. An inverted display is identified by trace identifier A on left of the waveform area.

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Contents Fluke Limited Warranty & Limitation of Liability Service Centers Table of Contents Fluke Iii Specifications Manufacturer Declaration of ConformityStatement of Conformity Sample tests# Description Unpacking the Test Tool KitModel 123 123/SCCScopeMeter Test Tool Kit Safely Using the Test Tool Safely Using the Test Tool Fluke Goal of this Chapter Powering the Test ToolScreen After Reset Resetting the Test ToolChanging Backlight From full to empty Reading the ScreenBasic Navigation Making Selections in a MenuLooking at the Measurement Connections Input aInput B Screen After an Auto Set Displaying an Unknown Signal with Connect-and ViewMaking Measurements Measurement SetupHz and Vpp as Main Readings Freezing the Screen Holding a Stable ReadingTouch Hold OFF appears on Making a Relative Measurement Making Relative MeasurementsChanging the Graphic Representation on the Screen Selecting Auto/Manual RangesChanging the Time Base Changing the AmplitudePositioning the Waveform on the Screen Observe that the trigger identifier moves horizontallyOn the screen 11. Smoothing the Waveform Smoothing the Waveform12. Displaying the Envelope of a Waveform Displaying the Envelope of a WaveformStarting a TrendPlot function TrendPlotting a WaveformChanging the TrendPlot Reading Acquiring the WaveformTurning Off the TrendPlot Display Making a Single Acquisition14. Making a Single Acquisition Start Recording Recording Slow Signals over a Long Period of TimeReversing the Polarity of the Displayed Waveform Selecting AC-CouplingTriggering on a Waveform Setting Trigger Level and SlopeSelecting the Trigger Parameters     17. Isolated Triggering Isolated Triggering Triggering on Video Signals18. Measuring Video Signals Triggering on a Specific Video Line Saving and Recalling a Setup or a Screen Saving ScreensRecalling Screens Deleting Screens 19. Connecting a Serial Printer Using a Printer    21. Connecting a Computer Using FlukeView SoftwareCleaning the Test Tool About this ChapterStoring the Test Tool Charging the Battery Pack Charging the Ni-Cd Battery PackKeeping Batteries in Optimal Condition Replacing the Battery Pack Replacing and Disposing of the Ni-Cd Battery PackAdjusting Scope Probes Using and Adjusting 101 Scope Probes  Parts and Accessories Standard AccessoriesCalibrating the Test Tool Ordering Code Standard AccessoriesMaintaining the Test Tool Parts and Accessories SW90W Optional AccessoriesUsing the Tilt Stand Using the Tilt StandChanging the Information Language Changing the Display Setting the Grid Display Adjusting the Screen ContrastChanging Date and Time Setting the Power Down Timer Saving Battery LifeChanging the Auto Set Options Potential Using Proper GroundingSolving Printing and Other Communication Errors Battery Testing of Fluke AccessoriesFluke multimeter Safety Characteristics Performance CharacteristicsIntroduction Environmental DataVertical Dual Input OscilloscopeTrigger HorizontalRanges Sampling Rate for both channels simultaneouslyAdvanced Scope Functions Display ModesAuto Set Input a and Input B Dual Input MeterDuty Cycle Duty PhasePulse Width Pulse Decibel dBAdvanced Meter Functions Miscellaneous PowerDisplay MemoryElectromagnetic Compatibility EMC EnvironmentalSafety Max. Input Voltage Input a and BUp to 400 Hz = 3 V/m Trace disturbance with STL120 No visible disturbance= 10 V/m Disturbance less than 10% of full scaleVDC, VAC, VAC+DC OHM, CONT, Diode CAP Index Fluke Index Fluke
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