Greg, If Init_Returns_Impulse = TRUE, then the IR output if Init contains the impulse response of the channel modified by the equalization of the model. This is independent of the GetWave_Exists = True or False. If GetWave_Exists = TRUE, then the waveform output of GetWave is the input to GetWave modified by the equalization of the model. This is independent of the Init_Returns_Impulse = True or False. Walter 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