eldo_user

Setting Up An Analysis
Worst Case Analysis
3. With all the sensitivity data, Eldo computes the combination of min or max parameter
values that will generate the best and worst cases (MIN and MAX) for each of the T
targets.
There can be at most 2×T worst case simulations. During these simulations, Eldo does
not output anything.
4. Finally, Eldo computes the worst case information for all the targets, and outputs this
information.
Thus, there can be at most 1 + P + 2×T simulations. Worst Case analysis assumes the
influence of each parameter to be linear, and not correlated with other parameters.
Sorting parameters can be specified to quickly identify the most sensitive parameters.
Tip
See “.WCASE” in the Eldo Reference Manual.
Worst Case Analysis Results
The results of worst case analysis runs are output using .EXTRACT, .PLOT, .PRINT, and
.PROBE commands.
If extracts have been specified, the results are provided inside the WORST CASE
SENSITIVITY and WORST CASE INFORMATION sections of the .chi file, for example:
0**** WORST CASE SENSITIVITY TEMPERATURE = 27.000 DEG C
0************************************************************************
With respect to MODEL RMOD DEV: Object :R1
Variation of XYCOND(XAXIS,VDB(OUT)