Define Shield Properties - Legacy

This option allows you to define the shield properties by either a manual definition in the .pre file or by loading from file.

Parameters:

Use legacy shields definitions: Unselect this option to define a layered shield using shield definitions from an SD card.
Define in *.pre file: Define the frequency dependent shield parameters based on measured transfer impedance and admittance data in the .pre file.
Load from file: The file format used when importing measured cable data from file is described in Load Measured Cable Data From File.

Frequency

The frequency at which the transfer impedance and admittance are specified in the .pre file below.

Zt Magnitude - Magnitude of transfer impedance

The magnitude of the transfer impedance defined in the .pre file.

Zt Phase - Phase of transfer impedance

The phase of the transfer impedance defined in the .pre file.

Yt Magnitude - Magnitude of transfer admittance

The magnitude of the transfer admittance defined in the .pre file.

Yt Phase - Phase of transfer admittance

The phase of the transfer admittance defined in the .pre file.

Metallic material

PEC: Select this option to set the shield of the filaments to PEC.

Material label: The label of the metallic material (as defined in the DI card) to be used for the shield.

Coating

Material label for coating: The label of the dielectric (as defined in the DI card) to be used as the coating for the cable.
Thickness of layer for coating: Define the thickness of the dielectric coating.

Shield thickness

The thickness of the shield.

Load Measured Cable Data From File

An example of an XML file containing fictitious measured data:

<?xml version="1.0" encoding="UTF-8"?>
<cableDB creator="name" date="2011-07-30" version="1.0">
<shielding name="shielding1">
<dataPoint freq="100e6" trans_imp_abs="5" trans_imp_phase="0" trans_adm_abs="0" 
trans_adm_phase="2"/>
<dataPoint freq="300e6" trans_imp_abs="6" trans_imp_phase="2" trans_adm_abs="4" 
trans_adm_phase="1"/>
<dataPoint freq="500e6" trans_imp_abs="4" trans_imp_phase="3" trans_adm_abs="3" 
trans_adm_phase="2"/>
<dataPoint freq="700e6" trans_imp_abs="1" trans_imp_phase="5" trans_adm_abs="2" 
trans_adm_phase="5"/>
</shielding>
</cableDB>