Greg, The EDA tool should never convolve the output of the Init function with the output of the GetWave function. This would double count the equalization. Walter From: ibis-macro-bounce@xxxxxxxxxxxxx [mailto:ibis-macro-bounce@xxxxxxxxxxxxx] On Behalf Of Gregory R Edlund Sent: Tuesday, April 30, 2013 2:50 PM To: ibis-macro@xxxxxxxxxxxxx Subject: [ibis-macro] Re: Init_Returns_Impulse Thank you, Walter & Ambrish. I understand the bit about Init_Returns_Impulse = TRUE being necessary for statistical simulation (at least on a rudimentary level). If both these parameters are set to TRUE and we're doing time domain simulation, is there any possibility that the simulator might apply equalization twice? Of does the simulator get to pick which way to apply equalization in this case? Greg Edlund Senior Engineer Signal Integrity and System Timing IBM Systems & Technology Group 3605 Hwy. 52 N Bldg 050-3 Rochester, MN 55901 Inactive hide details for "Walter Katz" ---04/30/2013 01:35:01 PM---Greg,"Walter Katz" ---04/30/2013 01:35:01 PM---Greg, From: "Walter Katz" <wkatz@xxxxxxxxxx> To: Gregory R Edlund/Rochester/IBM@IBMUS, <ibis-macro@xxxxxxxxxxxxx> Date: 04/30/2013 01:35 PM Subject: [ibis-macro] Re: Init_Returns_Impulse Sent by: ibis-macro-bounce@xxxxxxxxxxxxx _____ 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