Fluke 123, 124 Using Proper Grounding, All connections to COM are at the same, Potential

Page 65

Tips and Troubleshooting

3

Using Proper Grounding

Using Proper Grounding

Incorrect grounding can cause various problems. This

Section gives you guidelines for proper grounding.

￿ Use the short ground lead(s) when measuring DC or AC signals on input A and input B. (See Figure 3-2.)

Warning

To avoid electrical shock or fire, use only one

 

COM (common) connection

, or ensure that

Figure 3-2. Grounding with Short Ground Lead

all connections to COM are at the same

 

potential.

￿ Use the unshielded black ground lead to COM (common) for Ohm (Ω), Continuity, Diode, and Capacitance measurements. (See Figure 3-3.)

Using the unshielded ground lead is also possible for single or dual input measurements for waveforms with a frequency up to 1 MHz. This may add some hum or noise to the waveform display due to the unshielded ground lead.

Figure 3-3. Grounding with Unshielded Ground Lead

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Contents Fluke 123/124 Limited Warranty & Limitation of Liability Service Centers Table of Contents Maintaining the Test Tool Tips and TroubleshootingFluke 123/124 Iii Manufacturer Declaration of ConformityStatement of Conformity Sample testsDescription Fluke Fluke 123/S Fluke 124/S Unpacking the Test Tool KitScopeMeter Test Tool Kit Safely Using the Test Tool Safely Using the Test Tool Max. Floating Voltage If Safety Features are ImpairedSpecified Goal of this Chapter Powering the Test ToolScreen After Reset Resetting the Test ToolChanging Backlight Screen Areas Reading the ScreenBasic Navigation Making Selections in a MenuInput B Looking at the Measurement ConnectionsInput a Screen After an Auto Set Displaying an Unknown Signal with Connect-and ViewMaking Measurements Measurement SetupHz and Vpp as Main Readings Touch Hold OFF appears on Freezing the ScreenHolding a Stable Reading Making a Relative Measurement Making Relative MeasurementsChanging the Graphic Representation on the Screen Selecting Auto/Manual RangesChanging the Time Base Changing the AmplitudeOn the screen Positioning the Waveform on the ScreenObserve that the trigger identifier moves horizontally 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 15. Recording Waveforms over Longer Period of Time Recording Slow Signals over a Long Period 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 Screens with Belonging Setups Saving and Recalling a Setup and a ScreenRecalling Screens and Setups Deleting Screens and Associated Setups Making Cursor Measurements Using Horizontal Cursors on a WaveformHighlight the left cursor Using Vertical Cursors on a Waveform21. Risetime Measurement with Cursors Making Rise Time MeasurementsProbe Attenuation Using the 101 Probe for High Frequency MeasurementsProbe Adjustment Using a Printer22. Connecting a Serial Printer Using The Test Tool Using FlukeView Software Using FlukeView Software24. Connecting a Computer Storing the Test Tool Cleaning the Test ToolAbout this Chapter Charging the Battery Pack Charging the Rechargeable Battery PackKeeping Batteries in Optimal Condition Replacing the Battery Pack Replacing and Disposing of the Rechargeable Battery PackAdjusting Scope Probes Using and Adjusting 101 Scope ProbesFluke 123/124 Calibrating the Test Tool Parts and AccessoriesStandard Accessories Ordering Code Maintaining the Test Tool SW90W Optional AccessoriesUsing the Tilt Stand Using the Tilt StandChanging the Information Language Contrast Changing the DisplayChanging Date and Time Setting the Power Down Timer Saving Battery LifeChanging the Auto Set Options Potential Using Proper GroundingAll connections to COM are at the same Battery Testing of Fluke Accessories Solving Printing and Other Communication ErrorsSafety Characteristics Performance CharacteristicsIntroduction Environmental DataVertical Dual Input OscilloscopeFrequency Response Rise Time Input ImpedanceTrigger HorizontalAuto Set Advanced Scope FunctionsDisplay Modes Input a and Input B Dual Input MeterDuty Cycle Duty PhasePulse Width Pulse Decibel dBContinuity Ohm ΩDiode Capacitance CAPAdvanced Meter Functions Cursor readout FlukeMiscellaneous PowerDisplay MemoryEnvironmental SafetyVoltage Probe BB120 and STL120Disturbance less than 10% of full scale = 3 V/m = 10 V/m VDC, VAC, VAC+DC Index Fluke 123/124 Index Temperature, Environmental

124, 123 specifications

The Fluke 123 and 124 are part of Fluke's innovative range of handheld oscilloscopes designed for electrical and industrial maintenance professionals. These devices combine oscilloscopes with digital multimeter capabilities, making them invaluable tools for troubleshooting and maintenance tasks.

One of the standout features of the Fluke 123 and 124 is their ability to perform real-time waveforms and measurements. Equipped with a 2.5-inch color display, these oscilloscopes provide clear and detailed visualizations of electrical signals. The Fluke 123 offers a bandwidth of 20 MHz, while the Fluke 124 takes it a step further with a bandwidth of 40 MHz, making them versatile tools for various electrical applications.

Both models feature a unique "VPE" (Voltage, Period, and Edge) measurement capability, allowing users to capture electrical signals with precision. This feature is particularly useful in identifying signal distortions and voltage fluctuations, which can lead to equipment failures. Additionally, these devices come with various trigger functions, enabling users to analyze intermittent faults and complex signal behaviors effectively.

Another important characteristic of the Fluke 123 and 124 is their robust design. Built to withstand harsh working environments, they boast an IP51 rating for protection against dust and moisture. The ergonomic design ensures comfort during prolonged use, while the easy-to-navigate interface simplifies its operation.

In terms of battery life, both models are equipped with long-lasting rechargeable batteries, ensuring that users can operate them for extended periods without interruption. Furthermore, they offer storage capabilities for waveform captures, which can be later analyzed or shared with colleagues, enhancing collaboration during troubleshooting efforts.

The Fluke 124 also includes advanced features such as a built-in recording function, allowing users to log measurements over time. This is especially useful for monitoring electrical parameters in industrial processes and systems. Moreover, both models support various probes, giving users the flexibility to tackle different measurement scenarios.

In conclusion, the Fluke 123 and 124 are essential tools for professionals in the electrical and industrial sectors. Their combination of oscilloscope and multimeter functionality, robust design, and advanced measurement capabilities make them ideal for effectively diagnosing and troubleshooting a wide range of electrical issues. Whether it’s for routine maintenance or complex troubleshooting, these devices provide the accuracy and reliability necessary for today's demanding environments.
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