Agilent Technologies 5988-7401EN manual Signal Modes, Nrz

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Combining Parameters for Signal Generation

Using the Agilent 81133A/81134A Pulse Generator

Signal Modes

In Data and PRBS pattern modes, the pulse output format can be selected from RZ, R1, and NRZ. The timing of the different format is shown in the following diagram:

1

1

1

0

0

1

RZ

R1

NRZ

•RZ

Return to 0 pulse format.

On every 0 bit of the pattern, the signal remains low. On every 1 bit of the pattern, the signal goes to high and then back to low after the time specified by the pulse width or duty cycle parameter.

•R1

Return to 1 pulse format.

On every 1 bit of the pattern, the signal remains high. On every 0 bit of the pattern, the signal goes to low and then back to high after the time specified by the pulse width or duty cycle parameter.

•NRZ

Non-return to zero pulse format.

A leading edge is generated for a 0 -> 1 data transition, a trailing edge is generated for a 1 -> 0 data transition.

Agilent 81133A/81134A Pulse Generator User’s Guide, January 2005

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Contents Agilent 81133A/81134A Pulse Generator Revision Important NoticeContents Setting Up the 81134A by Using the Graphical User Interface Setting Up Generic and Advanced SignalsUpdating the Firmware Troubleshooting Index Contents Environmental Conditions Safety SummaryDo not Operate in an Explosive Atmosphere Before Applying PowerSafety Requirements Ground the InstrumentInitial Inspection Initial InspectionVentilation Requirements Power RequirementsPerformance Requirements Cleaning Recommendation Cleaning RecommendationDeclaration of Conformity Declaration of ConformityIntroduction to the Agilent 81133A/81134A Pulse Generator Introduction to the Agilent 81133A/81134A Pulse Generator Benefits and Key FeaturesInterface Keys Tab Keys to navigate Front Panel OverviewFront Panel Overview Graphical User Softkeys NumericGlobal Inputs Outputs Channel Inputs Input and OutputsDescription Rear Panel Overview Operating the Agilent 81133A/81134A Pulse Generator Channel Navigation through the PagesOperating the Agilent 81133A/81134A Pulse Generator MainHow to Navigate through the Parameters at one How to Select a Parameter from a Selection ListPress the navigation knob to open the selection list How to Change a Number Field How to Change a Number FieldPress Modify Values Fine-TuningChanging Single Digits Operating the Agilent 81133A/81134A Pulse Generator Setting Up Generic and Advanced Signals Setting Up Generic and Advanced Signals Setting Up a Clock SignalSetting Up a Clock Signal Using the Graphical User InterfaceNormal Out Channel Set the Freq. Divider to Frequency Divider Indicator Setting Up Generic and Advanced Signals Following code performs the same task Using the Remote Programming InterfacesSetting Up a Pulse Signal Pattern Mode Width Levels Setting Up a Pulse SignalTrigger Mode Generate the Signals //reconnect channels Setting Up a Data Pattern ECL Levels Setting Up a Data PatternPrbs Polynome Signal Mode Pattern Mode Switch to the Numeric Edit Mode Pulse Type NRZ Pattern Mode Data ECL LevelsData pattern for channel Numeric Edit Mode Trigger Mode Set up the trigger Set trigger mode to data OUTP0SOUR Bits Width = 100 ps Setting Up a Burst SignalDelay = 50 ps Period = 500 ps Arming SourceMode Setting Up a Burst SignalInstrument Timing Parameter Data pattern for channel Graphic Edit ModeTrigger Output Aux page now looks as follows Following code performs the same tasks Burst Length = 4 x Data Length Setting Up a Repetitive Burst SignalInstrument Burst Repetition Specifies Mode Setting Up a Repetitive Burst SignalData Settings for the Pattern Signal To set the data pattern Setting Up a Repetitive Burst Signal Setting Up Generic and Advanced Signals Prepare the trigger Set trigger mode to Data OUTP0SOUR Bits Setting Up Signals for a Stressed Eye Diagram Measurement 86100 DCA Connecting the InstrumentsSetting Up Signals for a Stressed Eye Diagram Measurement 50 % Setting Up the 81134A by Using Graphical User InterfaceChannel page now looks as follows Enable the trigger output Viewing the Eye Diagram on the 86100 DCA Setting Up the 33250A Waveform GeneratorChannel panel Play with the SettingsUsing the Agilent 81133A/81134A Pulse Generator Instrument Panel Channel Using the Agilent 81133A/81134A Pulse GeneratorPages of the User Interface Pages of the User Interface Instrument Modes Combining Parameters for Signal GenerationCombining Parameters for Signal Generation Pattern Modes NRZ Signal ModesVariable Crossover Measure Function Clock Source Clock SourcesUsing the Agilent 81133A/81134A Pulse Generator Trigger Out Start ModeTiming of Generated Signals Trigger Out Timing of Generated SignalsClock Duty Cycle = 50 % OutputChannel Freq. Divider = PulsesData Pattern of 32 bits Data PatternOutput Trigger Out Prbs Data Pattern Burst Started BurstRepetitive Burst Jitter Modulation Saving and Recalling SettingsJitter Modulation Saving and Recalling Settings Updating the Firmware Updating the Firmware Troubleshooting Instrument does not Respond TroubleshootingIndex IndexTrigger output levels Index 5988-7401EN