LVDS differential output RampRise and RampFall

I am generating an IBIS model for an lvds device that has differential
output. I was wondering if I should use the output as follows or I should
remove the 100 ohm load and treat the output as a stand alone? The 100 ohm
resistor is used as the test load with 10pf caps to GND at each output (that
I did not show). Any suggetions.

Regards,
Ramzi Ammar
 

RampRise
---------------

                                        
               I---- \
        I \ ---------------|----------------------------------|
<------ Pin under test
        I \ | |
        I \ / /
        I > \ \ 50 ohm
        | / / 100ohm /
        | / | |
        | /o--------------|--------------| GND
        |----/ floating

RampFall
---------------

               I---- \
        I \ ---------------|----------------------------------|
<------ Pin under test
        I \ | |
        I \ / /
        I > \ \ 50 ohm
        | / / 100ohm /
        | / | |
        | /o--------------|--------------| VDD
        |----/ floating
Received on Mon Oct 4 13:59:53 1999