AGILENT Technologies has announced the release of two jitter analysis software packages for its high-performance Infiniium DSO80000 series 10, 12 and 13 GHz real-time oscilloscopes and the Infiniium 54850 series 2.5, 4, 6 and 7GHz real-time oscilloscopes.
The Agilent E2690A time interval and jitter analysis software was developed for Agilent by Amherst Systems Associates (ASA) and analyses repetitive and random signals.
The Agilent N5400A jitter analysis software is based on Agilent technology and analyses repetitive signals.
Both separate random and deterministic jitter (RJ/DJ) components, as required for compliance by many high-speed serial bus electrical-layer specifications such as PCI Express, Ethernet and Fibre Channel.
The Agilent E2690A and N5400A allow high-speed serial bus designers to quickly analyse the reliability and interoperability of high-speed serial transmitters and links.
The software helps to identify sources of jitter in these designs due to faulty parts, impedance discontinuities and data pattern dependencies. They provide the measurement insight to illustrate the shapes and contents of the jitter signals that are distorting the data or clock.
As serial bus speeds increase, the needs for higher data bandwidth and smaller data bus form factors have forced many design engineers to forgo their previous parallel bus designs and switch to multi-gigabit serial buses, often in differential pairs.
These new bus layouts present greater challenges, including limited channel bandwidth on existing FR-4 copper traces, additional noise from crowded circuit paths and high-frequency transmitters.
The Agilent E2690A represents version 4 of ASA's M1 jitter analysis product. The E2690A is Agilent's most comprehensive and primary software tool for characterising and debugging jitter measurements with a real-time oscilloscope.
It offers a comprehensive set of new tools to analyse random or repetitive signals. The AutoMeasure capability automatically detects the oscilloscope, assesses which inputs have signals, autoscales those signals and determines which standards the signals are using. It provides immediate, accurate and detailed results.
For jitter analysis, several RJ/DJ decomposition techniques are available, as documented by the International Committee for Information Technology Standards (INCITS) T11.2 methodologies for jitter and signal quality (MJSQ) specification task group, plus a new ASA proprietary technique, SEEj, which is based on neural network analysis.
The TestScript capability allows users to quickly automate repetitive measurement sequences, systematically run them and easily share applications such as compliance tests.
The Agilent N5400A jitter analysis software is based on Agilent's proprietary RJ/DJ separation algorithms for analysing repetitive signals, first introduced last February with the Agilent Infiniium 86100C Digital Communication Analyser with jitter analysis (DCA-J). The INCITS T11.2 MJSQ task group has approved these algorithms.
The N5400A is integrated with the Infiniium 86100C DCA-J software and uses a wizard-based approach to help users set up the jitter display.