Issue link: https://resources.pcb.cadence.com/i/1180526
PSpice User Guide Monte Carlo and sensitivity (worst-case) analyses October 2019 561 Product Version 17.4-2019 © 1999-2019 All Rights Reserved. Table 13-1 on page 561 lists down the actual entries recorded in a .mcp file for a model parameter and a resistor. The difference in the method used for storing values from previous Monte Carlo runs, is highlighted when you change the original value of a parameter and also choose to reuse the values from a previous Monte Carlo run. For example, if you change the original base value of a model parameter from 100 to 50 and reuse the values from an .mcp file, the simulation results will be based on the original parameter value, which is 100. Whereas, in case you change the value of a resistor from 100 to 10 , and reuse the values from a .mcp file, simulation results will be based on the changed value of 10 . 2. If the number of Monte Carlo runs is greater than the number of values in the .mcp file, PSpice simulator with first reuse all the values from the .mcp file and then for rest of the runs, the random values will be generated using the base value and the tolerance defined for the parameter in the schematic. For example, consider that for a particular model parameter, the .mcp file from which the parameter data is to be read has 10 entries, but for the current simulation, 20 Monte Carlo runs are required. In such cases, for the first 10 Monte Carlo runs the values will be read from the .mcp file. For the last 10 runs, the simulator will calculate the values using the base value of the model parameter and the tolerance specified on it. Table 13-1 Entries in a .mcp file For a model parameter: base value 100 tolerance 10% For a resistor: base value 100 tolerance 10% 1.00000e+002 1 1.02747e+002 1.002 1.07986e+002 .986 1.04803e+002 1.003 9.17754e+001 .9912 Ω Ω Ω