Greg, If GetWave_Exists = TRUE, Getwave is supposed to do any equalization for the time domain waveform that it will receive. Init will only perform equalization on the impulse response. The idea for such models is that they can be used for both statistical (Init based) AND time domain (Getwave based) processing. If you think that it is slightly confusing - then I agree with you. Thanks, Ambrish. From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Gregory R Edlund Sent: Tuesday, April 30, 2013 2:15 PM To: ibis-macro@xxxxxxxxxxxxx Subject: [ibis-macro] Init_Returns_Impulse If Init_Returns_Impulse = TRUE and GetWave_Exists = TRUE, what is GetWave supposed to do? It can't do any equalization, right? Equalization is happening in Init if Init_Returns_Impulse = TRUE. Thanks in advance. Greg Edlund Senior Engineer Signal Integrity and System Timing IBM Systems & Technology Group 3605 Hwy. 52 N Bldg 050-3 Rochester, MN 55901