eldo_user

Statistical Experimental Design and Analysis
Defining the Levels of Factors for the DEX Analysis
Note
This syntax assumes that a uniform or gaussian distribution has been defined on the circuit
parameter.
For example:
.PARAM TP = AGAUSS( 35.0, 11.667, 1.0)
.PARAMDEX TP NOISE/SIG=1.2
Note
It is possible to define levels outside of the range of a uniform distribution.
If the NSIGMA value is greater than √3, we have x high ≥ U and x low ≤ L.
Defining Levels as a Fraction of the Half Range of Uniform Distribution
This option enables you to specify the levels as a fraction of the half range h that is defined on
noise parameters which are associated with the uniform distribution. The values of the low level
x low and high level x high are defined as ±n·h where h is the half range of the uniform distribution
on the factor.
The command syntax is:
.PARAMDEX FACTOR_NAME [NOISE/] RNG=NRANGE
For example:
.PARAM VARL=0 LOT/UNIF=0.05U DEV/UNIF=0.1U
.PARAMDEX VARL NOISE/RNG=0.5
Note
It is possible to define levels outside of the range of a uniform distribution.
If the NSIGMA value is greater than 1.0, we have x high ≥ U and x low ≤ L.
Tip
See “.PARAMDEX” in the Eldo Reference Manual.
Related Topics
Defining the Levels of Factors for the DEX Analysis
Eldo® User's Manual, 15.3 569