Agilent technologies sparameter and tdr impedance measurement solution summary transmission lines for high speed digital communications, such as connectors and printed circuit boards, are. To demonstrate the usefulness of a tdr in board transition designs, the. Agilent ena series network analyzers e5071c option tdr enhanced time domain analysis onebox solution for high speed serial interconnect analysis the ena option tdr is an application software embedded in the e5071c network analyzer, that provides a onebox solution allowing for simple and intuitive operation, fast and accurate measurements. Sparameters scattering parameters are power ratio measurements. The e5071ctdr is application software embedded in the ena network analyzer that provides a onebox solution for highspeed serial interconnect analysis. Agilent time domain analysis using a network analyzer.
Analyze forensic samples using gcms in less than 60 seconds. For anyone that is interested, i have compiled a list of application notes that relate to the pna. Kuester electromagnetics laboratory department of electrical, computer. A timedomain reflectometer tdr is a measurement tool used to measure the impedance profile of a component device under test dut. It would take those 10 years, to completely change the concept and design of an oscilloscope. First, well use a transient simulation to manually run a tdr by calculating impedance, then well use the powerful tdr front panel to use sparameter data to automatically run the measurement. The lc handbook guide to lc columns and method development the lc handbook guide to lc columns and method development agilent crosslab combines the innovative laboratory services, software, and consumables competencies of agilent. Tdr tdt and normalization normalization, an errorcorrection process, helps ensure that time domain reflectometer tdr and time domain transmission tdt measurements are as accurate as possible.
In addition to the tdr and tdt measurement features, the tdr plugins provide two accurate oscilloscope measurement channels with user selectable bandwidths of 12. The tdr selects a record length that optimizes the amount of acquired data and the display update rate. For an extensive tutorial on the basics of tdr, please refer to agilent. We have 6 agilent technologies e5071c manuals available for free pdf download. Robert sleigh, product marketing engineer, digital test divisionscopes, explained, modeling and simulation are most accurate when using sparameters that have frequency content that spans from dc to the bandwidth of the system. Dave lee on semiconductor introduction high speed signals require high quality signal paths to maintain signal quality and prevent loss of signal power. Agilent high precision time domain reflectometry applied. Measuring pcb, cable and interconnect impedance, and. Keep in mind the measurement i am making does not use the impulse response to make the measurement of the load itself, the impulse response is only used to mark the start gate time before i disable the tdr option but gating is enabled. The equipment used for these examples is an agilent 86100 infiniium dca oscilloscope mainframe with an agilent 54754a differential tdr plugin module. This method soon becomes very time consuming and tedious.
Pdf impulse tdr and its application to measurement of antennas. In addition, when the broadband quality of a transmission system is to be determined, swr measurements must be made at many frequencies. The swept frequency tdr measurement method is put to practice in this study using an agilent. External components are not supplied with this option. Impedance with gold plated conductive diamond probe tips multimode tdr tdt interconnect. The oscilloscope product line evolution from 1980 to 2000. Tdr time domain reflectometry is used to measure dielectric constants, pcb coupons, pcb signal traces, interconnects and cables, tdt time domain transmission is used to measure crosstalk, rise time degradation, insertion loss, dielectric loss, skin effect and characterize lossy transmission line parameters, picotest has a lowcost, pocket. When compared to other measurement techniques, time domain reflectometry. Agilent s unique tdr technology provides service personnel with a significant distance measurement advantage. In addition to the tdr and tdt measurement features, the tdr plugins provide two accurate oscilloscope measurement. The 1980 1990 decade was a transition period for hp oscilloscopes. Physical layer test systems can provide measurement based time domain information in two ways. This application note will explain the basics of transmission lines and.
Agilent 86100a widebandwidth oscilloscope technical specifications modular platform for testing waveforms up to 40 gbs easier to use through a simplified user interface faster measurement throughput improved measurement accuracy and repeatability compatible with agilent. When used in conjunction with the agilent ena option tdr, it provides x, y and z positioning in one fluid motion. Since the basic principles of time domain reflectometry are easily grasped, even those with limited experience in highfrequency measurements can quickly master this technique. Part 4 measure tdr using agilent 86100a oscilloscope. Agilent technologies test and measurement call center p. The reflected waveform can be displayed in various formats, including swr and reflection coefficient. Theory of tdr measurement can be found in 1, a number of papers and application materials on electrical characterization of packages has been pub. Agilent technologies e5071c manuals manuals and user guides for agilent technologies e5071c.
Impulse tdr and its application to measurement of antennas conference paper pdf available december 2011 with 1,062 reads how we measure reads. Tutorial on time domain reflectometry tdr eeweb community. Based on the tdr impedance measurements, the designer can perform signal integrity analysis of the system interconnect, and the digital system performance can be predicted accurately. A foundation for signal integrity introduction signal integrity is a growing priority as digital system designers pursue everhigher clock and data rates in computer, communications, video and network systems. Time domain reflectometry tdr is one of the most frequently used analysis by signal integrity engineers to study the impedance offered by various sections of the device or design under test dut. Tdr and vna basics two basic measurement techniques exist for signal integrity characterization of gigabit interconnects in digital systems time domain reflectometry tdr and frequency domain vector network analysis vna. Hand held probes for agilent 86100c dcaj 54754a tdr. Wraith2 and dani or1 1 department of plants, soils and biometeorology, utah state university, logan, ut 843224820, usa 2 department of land resources and environmental sciences, montana state university, bozeman, mt 597173120, usa correspondence to. Introduction time domain reflectometry tdr measurement methodology is increasing in importance as a nondestructive method for fault location in electronic packages 14. Simple and intuitive operation fast and accurate measurements esd robustness inheriting the excellent accuracy from agilents e5071c ena network analyzers and adding the versatility of tdr. For signal integrity design and verification, it brings three breakthroughs. The agilent 86100a widebandwidth oscilloscope includes normalization as a standard feature. Agilent tdr microstrip creating web pages in your account.
With normalization software built into the oscilloscope. Hand held probes for agilent 86100c dca j 54754a tdr oscilloscopes 30 ghz 100. Accelerate your labs capabilities with high resolution lcms. A timedomain reflectometer tdr is an electronic instrument used to determine the characteristics of electrical lines by observing reflected waveforms it can be used to characterize and locate faults in. Agilent 86100c widebandwidth oscilloscope mainframe and modules technical specifications dcaj four instruments in one a digital communications analyzer, a full featured widebandwidth oscilloscope, a timedomain reflectometer, and a jitter analyzer accurate compliance testing of optical transceivers automated jitter and amplitude.
An equivalent tdr format can be displayed only if the network analyzer is equipped with the proper software to perform an inverse fast fourier transform ifft. A failure analyst can use tdr impedance measurements. For example, if your 54754a tdr module is installed in the left slot, you will only be able to measure four singleended parameters t11, t12, t21, and t22 and four differential parameters tdd11, tdc11, tcd11, and tcc11. The resolution can be adjusted for larger discontinuities. Agilent high precision time domain reflectometry tdr. This module can be operated as a single or a dualchannel tdr. Agilent utilizing tdr and vna data to develop 4port. Using sparameter files and setting up basic tdr measurements. Pdf impulse tdr and its application to measurement of. Vna measurements and tdr gating keysight community. Undesirable signal conversions cause emission or susceptibility problems. Zl transmission line load sampler circuit step generator high speed oscilloscope.
Intelligent tdr testing the service advisor tablet and tdr plugin module combination delivers a flexible, lightweight, batterypowered solution for cable testing. The tdr instrument is a very wide bandwidth equivalent sampling oscilloscope with an internal step generator. Agilent 86100c widebandwidth oscilloscope mainframe and modules technical specifications dcaj four instruments in one a digital communications analyzer, a full featured widebandwidth. Impedance of a single line, while the pair is driven in the even mode only common signal, no differential. Distancetofault is spelled tdr or vna evaluation engineering. For an extensive tutorial on the basics of tdr, please refer to agilent technologies application note 42 time domain. Chemical analysis, life sciences, and diagnostics agilent. Tdr and vnameasurement primer test and measurement equipment. The following is a partial list of keysight product numbers that were formerly part of agilent. Agilent e5071c ena option tdr enhanced time domain analysis. Robert sleigh, product marketing engineer, digital test divisionscopes, explained. The network analyzer measures the reflected and transmitted signals from the dut. This paper will discuss methods to achieve proper measurement techniques using a time domain reflectometer tdr oscilloscope and vector network analyzer.
The agilent 54753a, 54754a tdr plugin modules 14 the agilent 54753a, 54754a tdr plugin modules the tdr plugin modules are two of several plugin modules available for the agilent 83480a and agilent 54750a mainframes. Agilent technologies e8362b, e8363b and e8364b option h85. Agilent technologies sparameter and tdr impedance measurement solution summary transmission lines for high speed digital communications, such as connectors and printed circuit boards, are required to carefully control the impedance, which may affect the signal integrity of todays fast signals. The agilent ena option tdr provides the following three breakthroughs for signal integrity design and verification. Making the time domain measurements directly utilizing a time domain reflectometer tdr to apply a synthesized step waveform to a dut and observing the response. The 6546 lcqtof delivers the highest resolution with the widest dynamic range. Box 4026 englewood, co 801554026 tel 1 800 452 4844 canada. Time domain reflectometry measurement principles and applications.
If you are using only one tdr module, your available measurements will be limited only eight parameters will be available. For an extensive tutorial on the basics of tdr, please refer to agilent technologies application note 42 time domain reflectometry theory. Tdr also gives more meaningful information concerning the broadband response of a transmission system than any other measuring technique. Option h85 is designed to permit insertion of high powe r amplifiers and other signal conditioning equipment to allow high power network measurements at rf levels up to 20 watts. Time domain reflectometry tdr is a very useful tool for designing transitions such. Distance to fault measurements help you identify the faults along a feed line. Agilent e5071c ena option tdr comprehensive signal integrity measurement solution for next generation high speed digital standards hot tdr measurements impedance analysis of active devices. Electronic package fault isolation using tdr this application note was published in edfas microelectronic failure analysis desk reference, 5th edition 2004. Agilent ena series network analyzers e5071c option tdr enhanced time domain analysis onebox solution for high speed serial interconnect analysis the ena option tdr is an application software embedded in the e5071c network analyzer, that provides a onebox solution allowing for simple. Agilent 54753a and 54754a plugin modules the agilent 54753a and 54754a tdr plugin modules provide you with tdr and tdt measurement features. Time domain reflectometry tdr is one of the most frequently used. Another common instrument for evaluating a transmission line is the network analyzer.
Note that a tdr with appropriate software can generate sparameters see figure 1. Agilent e5071c ena option tdr enhanced time domain. Agilent 86100d widebandwidth oscilloscope mainframe and. The agilent e8362b, e8363b and e8364b option h85 is a modified version of the standard e8362b, e8363b and e8364b pna series network analyzer. Differential impedance measurement with time domain. Time domain reflectometry theory montana state university. This paper describes the fundamental theory behind time domain reflectometry using a keysight 86100 infiniium dca. Manual allows you to define a record length from a list of points. Ensure e5071c tdr application is in advanced mode in order to follow this example before beginning to make measurement.
In 1989, true triggering to 18 ghz was added to the 54120t using the new 54118a trigger input. Use these measurements to precisely pinpoint the location of damaged or degraded antennas, connectors, amplifiers, filters, and duplexers, etc. Agilent technologies 86100c quick start manual pdf. Figure 1 agilent 86100c connected to a twisted pair cable using sma connectors on one end and a differential probe held by a probe joystick arm on the other introduction this document will describe the procedure to collect differential sparameter measurements using the agilent 86100c with the time domain reflectometry tdr.
Tdr measurements time domain reflectometry tdr has traditionally been used as the key measurement technology for electrical characterization of electronic packages. Time domain measurement brett grossman, session chair gating effects in time domain transforms j. Dcaj agilent 86100c widebandwidth oscilloscope mainframe. Fieldfox provides up to 1001 datapoint resolution to help accurately locate faults and extend measurement. The standard tdr waveform will include secondary reflections that will introduce significant inaccuracies at the front end of the device under test up to 3 ohm for rambus rimms. E5008a1fp enhanced time domain analysis option upgrade for e5071c fixed perpetual license e5009a1fp enhanced time domain analysis option upgrade from option 010 for e5071c fixed perpetual license learn more about keysight network analyzer software. Agilent s electronic measurement business is now keysight technologies. Signal integrity is a growing priority as digital system designers pursue everhigher clock and data rates in computer, communications, video and network systems. Plugin module purpose the purpose of the plugin module is to provide measurement channels, including sampling, for the mainframe.
At todays high operating frequencies, anything that affects a signals rise time. Time domain reflectometry tdr, carried out using high performance instruments such as the. This is available only with the keysight 86100based tdr system. A time domain reflectometer tdr can be used as a tool to measure the impedance of the lines as the plane is moved into their proximity. The equipment used for these examples is an agilent 86100 infiniium dca oscilloscope mainframe with an agilent 54754a differential tdr. Time domain reflectometry measurement principles and applications scott b. Setting up, calibrating, and making measurements using the. The methodology of choice for measuring impedances is. When using the agilent e8362b, e8363b and e8364b option h85 in the high power configuration, the frequency offset mode o ption 080 and external r1 option 081 must be activated.
Tdr is the common name for an oscilloscope with this capability. Di erent measurements may have di erent time steps and time o sets so its important to adjust for that if plotting data in an external tool. E5008a1fp enhanced time domain analysis option upgrade for e5071c fixed perpetual license e5009a1fp enhanced time domain. Impedance of a single line, while the pair is driven in the odd mode only differential signal, no common signal. Matlab measurement script option 202, enhanced impedance and sparameter the enhanced impedance and sparameter software, option 86100c202, adds the ability to measure sparameters in tdr tdt mode. When used in conjunction with the agilent ena option tdr. For an extensive tutorial on the basics of tdr, please refer to agilent technologies application note time domain reflectometry theory. While simulation tools allow helpful insights into predicting structure performance, more test and measurement tools are needed to measure and verify the actual. Using a step generator and an oscilloscope, a fast pulse edge is launched into the dut. A foundation for signal integrity introduction signal integrity is a growing priority as digital system designers pursue everhigher clock and data rates in computer. Tdr techniques for characterization and modeling of. Tdrtdt and normalization normalization, an errorcorrection process, helps ensure that time domain reflectometer tdr and time domain transmission tdt measurements are as accurate as possible. The agilent 54753a and 54754a tdr plugin modules provide you with tdr and tdt measurement features.
Agilent technologies supports both conventional tdr and vnabased distancetofault dtf measurement. Automatic and manual singleended and differential tdr and tdt measurement capability. Since the basic principles of time domain reflectometry are easily grasped, even those with limited experience in highfrequency measurements. Measuring parasitic capacitance and inductance using tdr. How to perform single ended and differential tdr analysis using agilent ads introduction. Jul 19, 2014 using the agilent 33622a awg we perform some basic tdr experiments to measure and characterize various types of transmission cable including rg58, rg6 and utp. Pna application notes and papers keysight community. Experiment 05 pna series analyzers timedomain re ectometry. A timedomain reflectometer tdr is an electronic instrument used to determine the characteristics of electrical lines by observing reflected waveforms it can be used to characterize and locate faults in metallic cables for example, twisted pair wire or coaxial cable.
Automatic allows the tdr to select the record length for the input waveform. The measurement of a calibrated incident step launch into a device and the measured reflected energy from that launch into a device. Agilent 86100a widebandwidth oscilloscope technical specifications modular platform for testing waveforms up to 40 gbs easier to use through a simplified user interface faster measurement throughput improved measurement accuracy and repeatability compatible with agilent 83480aseries and 54750series modules. Measuring the characteristic impedance of singleended transmission line within a defined zone. Find signal integrity problems through tdrtdt measurements. Differential impedance measurement with time domain reflectometry. Agilent ena series network analyzers e5071c option tdr.
Tdr analysis using agilent ads rfmicrowave circuit. The tdr settings to get impedance over distancetime are. Measuring parasitic capacitance and inductance using tdr timedomain reflectometry tdr is commonly used as a convenient method of determining the characteristic impedance of a transmission line or quantifying reflections caused by discontinuities along or at the termination of a transmission line. Time domain reflection tdr is a technique for measuring the quality of a signal path.
662 1229 1387 522 322 223 524 247 52 1498 1415 577 532 1129 244 670 1179 863 577 888 822 147 624 1392 1443 752 1189 85 1331 42 963