The number of steps (trials) used to reach CIR. If, for example, Step Count is set to 4, four trials are executed. The first runs at 25% of this ECEs share of CIR, the second at 50%, then 75%, and finally 100%. A step count of 1 corresponds to executing Y.1564's A.1 test (Simple CIR Validation Test). A step count greater than 1 corresponds to executing Y.1564's A.2 test (Step Load CIR Test). Valid range is from 1 to 1000 with a default of 4 steps.