NETEX-G Topics

Overview
• Introduction
• Applications
• User Interface
 
Inputs
• Gerber File Requirements
• Vias from Drill Data
• Layer Stackup
• Wire Bond Data
 
Assigning Nets and Nodes
• From ASCII Table
• From AIF
• From IPC356
• From GBRVU

Outputs
• ASCII Output
• Ansoft ANF
• Geometry Options
• GDSII
• DXF
 
Proximity Effect
• What is a Proximity Net?
• What is a Neighbor Net?
 
 
Extractions
• Extracting Nets
 
 
Netex Engine
• Program Flow
• Job File Syntax
• Command Line Syntax
• drl2gbr engine
• generating wire coords  

 

Expansion

The expansion section is used to define an expansion distance that NETEX uses to determine which conductors are close enough to grab for purposes of computing fringing capacitance.

This section is optional. If you don't need a "proximity" net then you don't need to specify an expansion distance. However if you do request a proximity net then you should define a valid expansion distance.

In the NJB file the expansion section looks as follows:

B_EXPANSION
2.5 MIL
E_EXPANSION

Column Definitions

Column 1 - expansion distance. must be a positive number.

Column 2 - units. UM or MICRON, MM or MILLIMETER, INCH or IN, MIL.

The expansion section must begin with b_expansion and end with e_expansion.




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