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How to model the following twisted pair cable in PSPICE? Help ASAP

Hi all,

I have a twisted shielded differential signal pair carrying LVDS data. I have an adjacent twisted shielded power cable 28V on one line and rtn on the other. They are all in the same cable. I would like to model this for a transient response and see how a pulse on the power line effects the signal integrity on the adjacent LVDS twisted pair. I need to model the mutual L and C between all conductors ( 2 pwr and 2 signal) in the cable.

I haven't done something like this using PSPICE before and so it would be very useful to hear from someone who has modelled something like this before.

thanks

Alok Tripathi over 14 years ago

One possible way to insert a series "L" in all four signal path and link them via one common coupling. You need to keep coupling coefficient to a low value to have loose coupling. I would connect "C" directly between two adjacent signals.
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