Improvements Transmission Line Models
Important improvements have been made to lossy transmission line simulation based on
the best-available research regarding PCB dielectric modeling. These utilize the more
accurate multi-pole Debye models, which now give ultra-wideband frequency (DC to
> 50 GHz) support with completely correct low-frequency asymptotics, which is missing
in many other simulators.
In addition, support for modeling copper surface roughness has been added, which is
critical for analysis of 6 Gbps and higher bit-rate signals.
Coupling Transmission Lines
Quickly and easily create coupled transmission line segments with this new feature. The
user can select multiple transmission lines in a schematic, and then couple them together
with a simple right-click of the mouse.
Touchstone Transformer Enhancements
Enhancements in S-parameter modeling include addition of a standalone, complex-pole
fitter. This makes fitting S-parameter models more explicit and visible. Also a new
wizard-driven transform application has been added. This allows easy setup of passivity
and symetry enforcemenet, conversion between S/Y/Z parameters, conversion between
standard and mixed parematers, S-parameter renormalization (for viewing), and “safe”
port reduction with auto termination of eliminated ports.
Fast-Eye Simulation Improvements
This release of HyperLynx features a number of new fast-eye features, including:
sinusoidal deterministic jitter (can be used to model crosstalk, power-integrity effects,
etc.), receiver decision feedback equalization (DFE) and driver pre-emphasis, synthesis
of optimal DFE and pre-emphasis, advanced jitter controls, and nested statistical eye
contours to allow correlation of eye closing to probability of occurrence.
Standalone Wizard/Flow for Fast Eye Diagrams
Consistent with the thinking across all HyperLynx tools, Fast-Eye Simulation has been
re-implemented in a standalone wizard. This new wizard gives more control of the
simulation to the user. Mentor’s FastEye solution is orders of magnitude faster than
traditional simulation approaches, producing very fast and accurate results.
The flow can be integrated with HyperLynx, or advanced users can run the flow from
external files. The addition of the wizard makes the flow easier to
understand and control.
Enhanced Multiboard Support
Advanced connector models are supported in the Multiboard Wizard. This graphical editor
performs model “swathing”. Its easy-to-use drag and drop feature makes connections between
connectors fast and easy. Then, the model can be extracted and exported to LineSim.
Oscilloscope Improvements
There are a number of improvements to the oscilloscope function that makes it easier to
use and presents more accurate data. Measurements have been improved to operate on
multiple edges, and includes display of overshoot, flight time, and edge rates. The new
functions include:
 Enable/Disable All Probes
 Import multiple saved waveforms
Simulation Sweeps
HyperLynx now has the capability to parametrically sweep a wide variety of LineSim or
BoardSim interactive simulations, including stackups, transmission lines or segments,
passive component values, IC corners, and IBIS model selectors. The central sweep
manager allows easy global views and control of the sweep parameters.
Per-Net / Per-Pin Stimulus
This new feature allows each IC pin to receive a unique stimulus. This is required for
source synchronous buses, and is excellent for locating crosstalk. The stimulus is easy to
create and name, and then is applied by name to nets in BoardSim or pins in LineSim.
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发表于 2010-1-5 00:52:50
