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