OptEM Cable Designer Training Seminar Outline
OptEM Cable Designer Training Seminar Outline
OptEM Cable Designer Training - Sample Outline
Typical Day 1
Material and Object Definitions
- specifying basic conductors and dielectrics
- defining materials with frequency dependent properties
- using materials in object definitions
- plating thickness
- stranding and filling factors
- foamed dielectric and compound dielectric materials
Assembling Geometry
- grid and latching
- basic shapes: circle, polygon, stranded wire
- transformation of basic shapes into polygons
- editing polygons
- rotation
- placing enclosures
- non-uniform enclosure and shaping enclosures using elasticity
- role of anchor as placeholder and centre of rotation
Defining Cable Geometry
- tagging shapes with object definitions
- priority of overlapping objects
- the role of naming conductors and dielectrics
- importing design, instance position and rotation
- adding lay length and backtwist information to an instance
Setup Conditions for Simulation
- wavelength, speed of propagation and frequency
- pulse rise time and period vs. frequency range setting in OptEM software
- discussion of the influence of harmonics on different phenomena including waveforms
Typical Day 2
Process Geometry Details and Analysis Methods
- default settings for electromagnetic analysis of complex TPCs
- role of twisting tolerance in calculating worst case repetition distance of complex TPCs
- definition of analysis methods
- segment length definition - a section of a cable that allows the software to build a model for any length
- selection of the segment length and cutting density for analysis
- four methods of analyzing TPC to optimize accuracy vs. analysis time
- role of the internal database
Frequency Domain Circuit Simulation and S-Parameters
- lossy (single conductor) transmission lines, propagation constant, attenuation and phase shift
- introduction of S-parameters
- general theory of non-uniform lines
- chain parameters and their transformation to S-parameters
- checking database for existing LRCG results
- selection of frequencies and S-parameter simulation
- CSV result files
- viewing results in MS Excel
- crosstalk parameters
- approximation for backward and forward crosstalk in short lines
Spreadsheet Interface to Automate Creation of Multi-Pair Cables
- spreadsheet syntax and keyword definitions
- cable construction
- location of *.xls spreadsheet files, reading the spreadsheet into the software, saving the new cable geometry
- editing spreadsheets, adding non-keyword information
- archiving original cable data and reading the edited spreadsheet into the software
Automate Plotting of S-Parameters Using Excel Templates
- template naming syntax and location of *.xlt files
- details of the *.xlt output; data sheets and charts, pair and port names
- RL, IL, NEXT, PS-NEXT, FEXT, ELFEXT, PS-ELFEXT plots
- typical template modifications; increase number of frequency data points, change regulation limits, change number of ports (pairs)
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