Reasons for signal integrity analyses
With the help of signal integrity simulations, it can be determined before starting an expensive prototyping, if a transmission can reach the desired data rate. Possible weak spots can be identified and reworked, before extensive efforts have to be taken in designing, manufacturing and evaluation of a product. This helps in an early project phase to save costs and time of development.
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In a later project phase, prototypes can be evaluated by measurements and therewith discover potential discrepancies from a simulation model or a non-simulated part of the signal path. |
Signal integrity at ELMA
With the tool “Agilent Advanced Design System” ELMA has the possibility to simulate signal integrity parameters like impedance profiles, eye diagrams, bit error rates and timing behaviours. Ask for further simulation parameters to solve your signal integrity issues.
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Complete transmission systems can be modelled to evaluate the feasibility of custom bus structures or extended needs to standard busses. |
Simulations can be used to determine the best performance in driver devices, PCB traces and layer stack-up. Each measurement can be customized and detailed as required to reflect the desired target of simulation.
A huge amount of file types and driver models can be integrated. Among other types, established models like IBIS, S-parameter models and H-SPICE files can be integrated.
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With an “Agilent 86100C Infiniium DCA-J wideband oscilloscope” and two “54754A Differential & single-ended TDR/TDT modules”, ELMA can measure all parameters, which are required to evaluate a transmission system. |
These measured parameters are e.g. impedance profiles, attenuation, crosstalk, eye diagrams and S‑parameters. Especially impedance profiles and eye diagrams give visibly good results to identify degradation factors and rate the transmission quality. |
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The measured impedance profiles of the transmission lines can be “gated”. This procedure is used, to get rid of parasitic effects, which influence the impedance, but are not used in the real transmission, e.g. test cables and connectors.
The resulting impedance profile can be exported as an S-parameter model, which could be reused as a part of a simulation. This increases the simulation accuracy of similar project or updates.
Contact us for further information info@elma.de |
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