Jitter, Stability, Pulse Levels, 109 | Agilent Technologies 81101A

Specifications

Pulse Parameter Definitions

Jitter

Short-term instability of one edge relative to a reference edge. Usually specified as rms value, which is one standard deviation or “sigma”. If distribution is assumed Gaussian, six sigma represents 99.74% of the peak-peak jitter.

The reference edge for period jitter is the previous leading edge. That for delay jitter is the leading edge of the trigger output. Width jitter is the stability of the trailing edge with regard to the leading edge.

Stability

Long-term average instability over a specific time, for example, hour, year. Jitter is excluded.

Pulse Levels

Pulse output is specified as pulse top and pulse base (usually referred to as high level and low level), or as peak to peak amplitude and median offset. A “window” specification shows the limits within which the pulse can be positioned.

High Level

Amplitude		Median		Max
Amplitude				High
				High
				Level
			Window
			Window
Low Level		Offset
		Offset

				Min
				Min
				Low
				Level
	Zero Volts

109

Page 109

Image 109

Agilent Technologies 81101A manual Jitter, Stability, Pulse Levels, 109

81101A specifications

Agilent Technologies 81101A is a high-performance pulse generator designed to meet the rigorous demands of today's electronic testing environments. This versatile instrument is crucial for engineers and researchers who require precise timing characteristics and reliability for their testing applications.

One of the standout features of the 81101A is its ability to generate fast, precise pulses with rise and fall times of less than 1 ns. This capability makes it ideal for testing high-speed digital circuits, as it can accurately simulate signal behavior in real-world conditions. The generator operates across a frequency range of DC to 1 GHz, allowing it to cater to a variety of applications, including telecommunications, semiconductor testing, and signal integrity investigations.

The 81101A is equipped with advanced modulation capabilities, including amplitude modulation, frequency modulation, and pulse-width modulation. These features enable users to create complex waveforms that can mimic real-world signals. Additionally, the generator supports dual-channel operation, allowing simultaneous pulse generation on two outputs, which is particularly useful for testing differential signaling schemes.

Another significant characteristic of the 81101A is its comprehensive range of output formats. It supports single-ended and differential outputs, which can be essential for measuring the performance of various devices under different operating conditions. The instrument also offers a wide range of output amplitudes, from a few millivolts to several volts, making it flexible enough to cater to a variety of testing requirements.

The user interface of the 81101A is intuitive, featuring a large graphical display that simplifies waveform configuration and real-time monitoring. This interface allows engineers to easily set parameters and visualize pulse characteristics, reducing the time required for setup and configuration.

In terms of connectivity, the 81101A is designed to integrate seamlessly into existing test environments. It includes standard interfaces such as GPIB, USB, and LAN, facilitating automated testing procedures and communication with other laboratory equipment.

Overall, the Agilent Technologies 81101A pulse generator is an essential tool for engineers seeking precise and versatile signal generation capabilities. With its high-frequency performance, advanced modulation options, and user-friendly features, it remains a valuable asset in electronic testing and research applications.

Contents

Agilent 81101A 50 MHz Pulse Generator Front Panel Display and Softkeys Agilent 81101A 50 MHz Pulse Generator Copyright Limitation of Warranty Safety Summary Do Not Operate in an Explosive Atmosphere Safety Symbols About this Book VOLTageHIGH Contents Contents General Programming Aspects GP-IB Interface Bus Agilent 81101A Remote Control DISPlay OFF Programming RecommendationsSOURcePULSeDOUBle1STATe ONOFF. Sufficient to use # switch off display update # set default settings# switch off error check # enable the output Command Parameter Description Common Command Summary Status Model Transition Filters Condition RegisterEvent Register Registers in Group Status Group CONDition Enable RegisterEVENt QUEStionable OPERation Standard Event Status Group Status ByteBit Description This Status Group is not used in the instrument OPERation Status GroupAlways Bit QUEStionable QUEStionable Status Group Programming Reference See Agilent 81101A Scpi Command Summary High DOUBle1 STATe KEY SET Parameter RST, Default Values Default Values, Standard Settings Auto KEY LEVel SLOPe POSitive SOURce IMMediate ARM Event detection layer Programming the Instrument Trigger Modes Triggered ContinuousGated Pulses External WidthBurst Pulse period Source TRIGger SOURce Scpi Instrument Command List Armewid Use the SOURceFREQuencyCWFIXed commandOn OFF 1 Armfreq Armlev Armimp 10.00 ∝s ArmperNs to 999.5 s Signal Frequency of the arming signalArmsens Edge LEVel Disp Armsour Mmemcdir MMEMCAT? Mmemdel MmemcopyMmeminit Mmemstorstat MmemloadstatFilename,A OUTP1IMP To switch on the outputOUTP1IMPEXT 50.0 Ω NORMal INVerted OUTP1POLCURR1 Offset To program the amplitude current of the output signalOUTPutIMPedanceEXTernal CURR1OFFSet CURR1HIGH SOURceCURRent subsystem CURR1LOW CURR1LIM CURR1LIMSTAT CURR1LIMLOW Freq Freqauto Use this command to enable either of the SOURceVOLTage orHold Voltage or current SOURcePULSeDELay1HOLD PRATio With SOURcePULSeDELay 10.0% derived from width and period PULSDCYC1001% to 99.9%, depends on width, transition & period Period is varied rather than the absolute pulse width use PULSDEL1HOLD SOURcePULSeDELay1HOLD TimeTime PRATio PULSDEL1UNIT To set the pulse delay to 50% of periodParameter is programmed to a value without a unit suffix PULSDOUB1 To set and hold the double-pulse delay SOURcePULSeDOUBle1DELayHOLD TimePULSDOUB1DEL PULSDOUB1DELHOLD To set the double-pulse delay to 50%TIMEPRATio PULSDOUB1DELUNIT Pulsper PULSHOLD1 PULSTDEL1 Pulsperauto When the pulse width is varied To program the pulse width by means of the delay parametersPULSTRAN1HOLD Pulse width PULSTRAN1 PULSTRAN1UNIT To set the leading and trailing edges independently PULSTRAN1TRA PULSTRIG1VOLT PULSTRAN1TRAAUTO Roscsour PULSWIDT1 Roscextfreq To set up the external PLL referenceMHz MHz or 10 MHz SOURceVOLTage subsystem Numeric Parameter suffix V with engineering prefixes With Amplitude, see VOLT1OFFSetTo +10 Specified current limits With low level, see VOLT1HIGH500 mV To 10.0 V 50 Ω into 50 Ω With high level, see VOLT1LOWTo 9.9 V 50 Ω into 50 Ω To set the low level voltage VOLT1LIMLOW VOLT1LIM VOLT1LIMSTAT Command STATusOPERationTo set and activate the high and low voltage limits Command STATusQUEStionable This commandStatus Group Register PTR NTR STATusQUEStionableEVENt? STATusQUEStionableENABleSTATusQUEStionableCONDition? STATusQUEStionableNTRansition SYSTERR? Systchec No suffix allowed SystkeyKey Description No key pressed Query only Softkey Cursor Up Cursor Down Cursor Left Cursor Right Command Systpres Systsec SYSTVERS? SystsetSYSTWARN? Separator between the messages SYSTWARNSTR?SYSTWARNBUFF? TRIGCOUNt EXT Input Triggered by a positive edge at the EXT InputTrigimp 50 Ω or 10 kΩ Trigslop TriglevTrigsour Pulse period source Pulse period sources set by TrigsourTRIGSOURce IMMediate INTernal1 Scpi Instrument Command List Pulse Generator TemperatureUsed by the instrument Warranted Performance Agilent 81112 a Declaration of Conformity Safety Agilent 81101A SpecificationsPower requirements Maximum Dimensions H x W x D Warranty WeightRecalibration period Acoustic Noise Emission Glitch-free timing changes PeriodPeriod can also be entered as frequency Period Agilent 81101A Delay Agilent 81101A DelayWidth Width Agilent 81101A Double Pulse Delay Agilent 81101A Double Pulse DelayTransition Times Transition Times Agilent 81101A Level Parameters Agilent 81101A External Load compensation Level Parameters Level Specifications 50 Ω into 50 Ω 1k Ω into 50 ΩPulse Performance Pulse Performance Agilent 81101A Input Specifications Agilent 81101A Phase Locked Loop PLLClock / PLL Reference Input Burst Mode Pulses ModeExternal Clock Burst Parameters Agilent 81101A Externally Gated Externally TriggeredGenerate continuous pulses, double pulses, or bursts Strobe Output Specifications Agilent 81101A Trigger Output Specifications Agilent 81101ATrigger Output Strobe Output Mode From Value Typical DelaysTyp Help Key OverprogrammingNon-Volatile Memory Memory Card Programming Times Function CodeOperates according to Ieee standard 488.2, 1987 and Scpi SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT1,C0 105 Pulse Parameter Definitions Time Reference Point Trigger DelayPulse Period Pulse Width Interchannel Delay Skew Pulse DelayInterval between leading edge medians of the double pulses Linearity Transition Time108 Stability JitterPulse Levels 109 Settling Time Preshoot, Overshoot, Ringing110 111 Repeatability 112 113 SymbolsBurst Gated Jitter 114Period 115 Safety 116 Front Panel Controls Page Manual Changes Model 81101A Index of Manual Change Manual Frame Errata Manual Change Declaration of Conformity