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  

 

The NETEX MGR Command Line

For a calling application to run NETEX it must generate the correct command line and launch the netexgmgr.exe program.

netexgmgr <job_file> <output_file> [options]


options:
========

-outtype:gds_cshape      output is in ASCII
    or
-outtype:gds_stream      output is GDSII Stream
    or 
-outtype:dxf             output is DXF


-outunit:<um|mm|cm|inch|mil>   output units
			

-wdir:<dirpath>        working directory where temp 
                       files are written.

-maxpts:<num_points>   maximum number of points of a 
                       polygon in the output file.

-arcres:<resolution>   number of degrees that a chord 
                       spans when converting an arc 
                       to segments.


-arcsag:<sag>          the max error between the chord 
                       used to approximate the arc and 
                       the arc itself.



-smoothing:<smooth>    minimum distance (in Gerber units) 
                       between adjacent vertices of a 
                       polygon. Vertices that are spaced 
                       closer are removed.

-loutput               use Leonov polygons when needed for 
  or                   "islands"

-cutlines              use re-entrant polygons when needed
                       for "islands"
  or
-nocutlines            break polygons that would form 
                       islands into two or more butting 
                       polygons.

-partition:<factor>    (only used with -cutlines) divide 
                       the data into partitions and 
                       specify the number of partitions.

-sliver:<width>         delete tiny polygons with less 
                       than the specified width 
                      (units are Gerber input units)
			

-batch                 create batch file to run the extraction.
                       don't execute the batch file. This would 
                       be useful only to someone investigating 
                       the engines behind the netexgmgr.

Example

In the example below on the left are all of the entries in the command line. Normally they would be on one line but are shown separately for clarity. On the right is a short comment.


netexgmgr.exe          program name

art2_job.njb           name of netex job file 

art2.gds               name of output file 

-outtype:gds_stream    type of output file

"-wdir:E:\My Files\output"  location of temp files

-maxpts:16000          max points per polygon

-arcres:15.0           arc resolution

-arcsag:0.25           chord error

-smoothing:0.2         smoothing value

-cutlines              output polygons with cut lines

-partition:2           divide problem into two
                       partions.
 
-sliver:0.1            remove any polygons whose size
                       is less than 0.1.





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