Fluke 196C user manual Using the Independently Floating Isolated Inputs

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Fluke 196C/199C

Users Manual

Using the Independently Floating Isolated Inputs

You can use the independently floating isolated inputs to measure signals that are independently floating from each other.

Independently floating isolated inputs offer additional safety and measurement capabilities compared to inputs with common references or grounds.

•Additional safety. Since the commons are not directly connected, the chance of causing short circuit when measuring multiple signals is greatly reduced.

•Additional safety. When measuring in systems with multiple grounds, the ground currents induced are kept to a minimum.

Because the references are not connected together inside the test tool, each reference of the used inputs must be connected to a reference voltage.

Measuring Using Independently Floating Isolated Inputs

The test tool has independently floating isolated inputs. Each input section (A, B, External Trigger / DMM) has its own signal input and its own reference input. The reference input of each input section is electrically isolated from the reference inputs of the other input sections. The isolated input architecture makes the test tool about as versatile as having three independent instruments. The advantages of having independently floating isolated inputs are:

•It allows simultaneous measurement of independently floating signals.

Independently floating isolated inputs are still coupled by parasitic capacitance. This can occur between the input references and the environment, and between the input references mutually (see Figure 44). For this reason, you should connect the references to a system ground or another stable voltage. If the reference of an input is connected to a high speed and / or high voltage signal, you should be aware of parasitic capacitance.

(See Figures 44, 45, 46 and 47.)

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Contents Fluke 196C/199C Page Limited Warranty & Limitation of Liability Service Centers Table of Contents Using Replay, Zoom and Cursors Using The MultimeterUsing The Recorder Functions Fluke 196C/199CIii Specifications Statement of Conformity Declaration of ConformityManufacturer Sample testsUnpacking the Test Tool Kit ScopeMeter Test Tool KitBattery Charger country dependent # DescriptionSafety Information Read First Safety Information Read First If Safety Features are Impaired Use of the test tool in a manner not specified mayImpair the protection provided by the equipment Using The Scope Powering the Test ToolAbout this Chapter Resetting the Test Tool Screen After ResetNavigating a Menu Open the Waveform OptionsHiding Key Labels and Menus Input ConnectionsMaking Scope Connections Scope ConnectionsDisplaying an Unknown Signal with Connect-and-View Screen After an Auto SetMaking Automatic Scope Measurements Freezing the Screen Hz and V peak-peak as Scope ReadingsUsing Average, Persistence and Glitch Capture Using Average for Smoothing WaveformsOpen the Waveform Options menu Digital Persistence Infinite Using Persistence to Display WaveformsPersistence... menu Envelope OffDisplaying Glitches Suppressing High Frequency NoiseAcquiring Waveforms Selecting AC-CouplingReversing the Polarity of the Displayed Waveform Menu Variable Input SensitivityOpen the Input a Options Select and accept VariableUsing Waveform Mathematics Functions Working with Noisy WaveformsSelect 10kHz HF reject to Comparing Waveforms Analyzing Waveforms Using The Multimeter Making Meter ConnectionsMaking Multimeter Measurements Measuring Resistance ValuesHighlight a ac Making a Current MeasurementOpen the Measurement menu Open the Current ProbeAmpere Measurement Readings Activate manual ranging Freezing the ReadingsSelecting Auto/Manual Ranges Increase or decrease the rangeMaking Relative Measurements Making a Relative MeasurementUsing The Recorder Functions Opening the Recorder Main MenuPlotting Measurements Over Time TrendPlot Starting a TrendPlot FunctionHighlight Trend Plot Scope Displaying Recorded Data TrendPlot ReadingOpen the Recorder Options Changing the Recorder OptionsTurning Off the TrendPlot Display Exit the recorder functionRecording Scope Waveforms In Deep Memory Scope Record Starting a Scope Record FunctionHighlight Scope Record Using ScopeRecord in Single Sweep Mode Using External Triggering to Start or Stop Scope Record Analyzing a TrendPlot or Scope Record Triggered Single Sweep RecordingUsing Replay, Zoom and Cursors Replaying the 100 Most Recent Scope ScreensReplaying Step-by-Step Replaying a WaveformReplaying Continuously Turning Off the Replay FunctionCapturing 100 Intermittents Automatically Zooming in on a Waveform Zooming in a WaveformDisplaying the Zoomed Waveform Turning Off the Zoom FunctionUsing Horizontal Cursors on a Waveform Making Cursor MeasurementsUsing Vertical Cursors on a Waveform Turn off the cursorsUsing Cursors on a A+B, A-B or A*B Waveform Making Rise Time MeasurementsTriggering on Waveforms Setting Trigger Level and Slope Screen with all Trigger Information Adjust the trigger levelUsing Trigger Delay or Pre-trigger Trigger Delay or Pre-trigger ViewAutomatic Trigger Options Open the Trigger Options menuOpen the Automatic Trigger Select Free Run, jump to Noise Triggering on EdgesOpen the Trigger Options menu Open the Trigger on Edge menu Reject FilterTriggering on Noisy Waveforms Making a Single AcquisitionMaking a Single Shot Measurement Triggering on External Waveforms Select 1.2V under the Ext LevelLabel Triggering on Video Signals Select Video on a to openTrigger on Video menu Triggering on Video Lines Enable video line selectionTriggering on Video Frames Choose FieldSelect Pulse Width on A... to Triggering on PulsesDetecting Narrow Pulses Open the Trigger on Pulse WidthTip Finding Missing Pulses Triggering on Missing Pulses Using Memory, PC and Printer Saving and RecallingDisplay the SAVE/PRINT key labels Saving Screens with Associated SetupsHighlight SCREEN+SETUP location Save the actual screenOpen the Recall menu Recalling a Setup Configuration Viewing Stored Screens Connecting to a ComputerDocumenting Screens Open the View... menuConnecting to a Printer Connecting a Serial PrinterPrinting a Screen Setting up the Printing ConfigurationOpen the Printer Setup submenu Baud RateFluke 196C/199C Using the Standard Accessories TipsProbing Using 2-mm Heavy Duty Test Probes Heavy Duty Fixed Connections for ScopeTips Using the Independently Floating Isolated Inputs Measuring Using Independently Floating Isolated InputsParasitic capacitance between analog Digital reference Turn the test tool off Using the Tilt StandSuppressing Key Labels and Menu’s Press and holdOpen the Language Select Adjusting the Contrast and BrightnessChanging the Information Language Accept French as the languageOpen Display Options menu Open Date Adjust menu Changing the Display ColorChanging Date and Time Saving Battery Life Setting the Power Down TimerTo Coupling Open the Auto Set Adjust menuChanging the Auto Set Options Select UnchangedCleaning the Test Tool Maintaining the Test ToolStoring the Test Tool Charging the Batteries Charging the BatteriesExtending Battery Operation Time Start the refresh cycleReplacing the NiMH Battery Pack BP190 Calibrating the Voltage ProbesMaintaining the Test Tool Start the probe calibrationDisplaying Calibration Information Parts and AccessoriesStandard Accessories Open the Version & CalibrationStandard Accessories Ordering Code Ordering Code TL24 General Purpose LeadsOrdering Code Optional Accessories SW90WTroubleshooting Battery Operated Fluke Accessories Do Not Function FlukeView Does Not Recognize The Test ToolSafety Characteristics SpecificationsPerformance Characteristics IntroductionDual Input Oscilloscope Isolated Inputs a and B VerticalHorizontal Edge Trigger Trigger and DelayAutomatic Connect-and-View Trigger Isolated External TriggerAutomatic Scope Measurements AC Voltage VAC AC+DC Voltage True RMSFrequency Hz Amperes AMPPeak Duty Cycle DutyTemperature Temp PowerPhase Decibel dBMeter DMM Measurements on Meter InputsDiode Recorder TrendPlot Meter or ScopeScope Record Zoom, Replay and Cursors MiscellaneousOptical InterfacePort Probe CalibrationMemory MechanicalEnvironmental Safety Max. Input VoltagesMax. Floating Voltage Probe SafetyElectrical specifications Environmental104 Electromagnetic Immunity 106 Index Average108 Max. Floating Voltage, 102, 103 Max. Input Voltage 110

196C specifications

The Fluke 196C is a sophisticated digital oscilloscope designed for a multitude of applications in the electronics and electrical engineering fields. Known for its high performance and user-friendly interface, the 196C is a popular choice among professionals who require reliable and accurate measurements. This model is particularly valued for its ability to capture both fast and slow signals with precision, making it suitable for a wide range of testing and troubleshooting tasks.

One of the standout features of the Fluke 196C is its color display, which offers a 7.5-inch screen with stunning resolution. The display provides a clear and detailed view of waveforms, allowing users to analyze results quickly and effectively. The color-coded waveforms enhance visual clarity and differentiation, making it easier to identify issues in complex signals.

The 196C utilizes advanced digital signal processing technology to offer a bandwidth of 200 MHz and a maximum sampling rate of 1 GS/s. This high bandwidth ensures that it can capture high-frequency signals accurately, making it an ideal tool for testing high-speed circuits. Additionally, the oscilloscope supports up to 2 million points of waveform memory, which allows for prolonged capture times and detailed waveform analysis.

Another significant feature is the multi-channel capability of the 196C, which allows users to connect and analyze multiple signals simultaneously. This is particularly useful in scenarios where comparative analysis is required, such as when debugging interconnected circuits. It supports four input channels, ensuring that complex tests can be performed without needing to switch connections repeatedly.

The Fluke 196C is also equipped with a variety of measurement and analysis tools that enhance its functionality. Automatic measurements can be taken to assess parameters such as frequency, amplitude, and rise time, reducing the chances of human error. The built-in FFT (Fast Fourier Transform) functionality enables users to perform frequency domain analysis, facilitating deeper insights into signal behavior.

Moreover, the 196C offers extensive connectivity options, including USB and Ethernet interfaces. This allows for easy data transfer and remote access, enhancing collaboration among teams and facilitating documentation of results.

In summary, the Fluke 196C digital oscilloscope combines high-performance specifications, an intuitive interface, and powerful analysis features to deliver a versatile tool for engineers and technicians. Its advanced technologies and user-friendly design make it an indispensable asset for effective electronic diagnostics.
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