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HSD Solution
SnpExpert – S-parameter Exploration


Overview

SnpExpert provides a quick way to explore S-parameters for SI engineers to understand the electrical characteristics of interconnects, connectors, packages, and systems. It offers comprehensive plotting functions in frequency and time domains. Crosstalk analysis is made easier with quick victim and aggressor setup and built-in PSXT, ILD, ICR, and ICN. COM analysis is also supported. Built-in compliance for various high-speed standards allows quick compliance checks. Thru-Only De-embedding (TOD) enables accurate test fixture removal with 2x thru and1x open/short/reflect. It has been verified with IEEE P370. It provides an accurate way to perform dielectric constant (Dk) and loss tangent (Df) extraction over a wide range of laminate materials. S-parameter quality such as passivity, causality, and reciprocity can be quickly checked and corrected.



Highlights

  • SnpExpert provides a quick way to explore S-parameters for SI engineers to understand the electrical characteristics of interconnects, connectors, packages, and systems.

  • SnpExpert offers comprehensive plotting functions in frequency and time domains.

  • Crosstalk analysis is made easier with quick victim and aggressor setup and built-in PSXT, ILD, ICR and ICN. COM analysis is also supported.

  • Built-in compliance for various high-speed standards allows quick compliance check.

  • Thru-Only De-embedding (TOD) enables accurate test fixture removal with 2x thru and1x open/short/reflect. It has been verified with IEEE P370.

  • SnpExpert provides an accurate way to perform dielectric constant (Dk) and loss tangent (Df) extraction over a wide range of laminate materials.

  • S-parameter quality such as passivity, causality and reciprocity can be quickly checked and corrected.


Main Features

S-Parameter Quality

  • S-parameter quality in terms of passivity, causality, reciprocity, and stability can be shown graphically.

  • Reciprocity, passivity and causality check both in frequency domain and time domain.

  • Enforce quality to generate new S-Parameters.

Thru-Only De-embedding(TOD)

  • Built-in through-only de-embedding to remove fixture effect for SI applications.

  • Support test fixture de-embedding with 2x thru,1x open/short/reflect.

  • Support multiple ports system de-embedding.

Frequency-Domain Plot

  • S-, Y-, Z-parameter, Diff S-parameter, Group delay, VSWR, customized function plot.

Time-Domain Plot

  • TDR and TDT with step and impulse stimuli.

  • Built-in delay calculator for both single-ended trace and differential pair, and skew calculator between two traces in each differential pair.

High-Speed Channel Analysis

  • Built-in crosstalk plots including FEXT, NEXT,PSXT, ILD, ICN, and ICR.

  • Built-in COM calculator and USB-Type C analysis.

  • Built-in customized DDR crosstalk calculation.

Dk/Df Extraction

  • Dk/Df extraction feature helps PCB designers to get accurate material property from measurement.

  • Optimization-based method has good correlation with measurement data.

One-Click Report Generation

  • Easy to generate report in Word/PPT/HTML.


What's New in SnpExpert 2020.01

  • Template Plot: Curve by Curve function supports saving colors

  • Eye diagram:

    (1)Support exporting calculated values

    (2)Optimize calculation speed

  • Support Python scripts to dealing with batch S parameter to Y parameter

  • Grid plot supports unified setting of X-axis and Y-axis

  • Template Plot:

    (1)supports setting A-axis

    (2) Optimize the display of single-ended icons

  • COM calculation supports abort

  • No red dot in TDR default

  • Optimize Dk/Df function:

    (1) The map exported by Optimization Based in Dk/Df Extraction, the path supports customization; the path is customized by General Options under File

    (2)Improve accuracy

  • Add NEXT and FEXT buttons right below All RL and ALL IL under grid tab

  • Improve RX/TX grouping function in crosstalk analysis, RX end can be set as victim

  • The calculation of ILD_RMS does not limit Compliance

  • Optimize custom compliance expression

  • Update COM Library


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