DC Block Simulation model?

Hi,

Does anyone have the IBIS simulation model for DC Block (BLK-89)?

I'm doing a comparison between IBIS simulated waveform and lab measured waveform. With the use of DC-block, the signal fall time has become much slower. I would like to find a simulation model to run simulation and compare with the measured waveform.

If there is no IBIS model available, anyone knows how to replace a DC-block with components like series cap and resistor? And what will be the value of those components?

Thanks for your help in advance.

Regards,

Icy