GaAsDiodeLaser
September 19th, 2008, 12:08 PM
What are the requirements for indicator value parameters in GLL models in ALTA7 Pro?
I am in the process of compiling a fairly large set of operational reliability data for a product line with several hundred samples and dozens of separate test groups, but I am getting an error when I try to turn on indicator variables as acceleration parameters in the software. I have four separate numerical acceleration factors (1 arrhenius + 3 power law) related to the operating conditions, which works fine by itself. I would like to add four separate indicator factors associated with different operation modes and or product configurations (ie, continuously on, 0.5Hz on/off operation, solder type, etc), and I setup each indicator variable as a binary factor, either 0 or 1 with no stress transformation applied), but I get an error returned when I attempt to get the model to converge indicating that I can only use positive numbers for the indicator variables. The example file in the manual seems to show that what I am doing should work, and when I setup a dummy file to test it using a small amount of data it seems like it works because I don't get the error message. What would trigger this type of error message?
I am in the process of compiling a fairly large set of operational reliability data for a product line with several hundred samples and dozens of separate test groups, but I am getting an error when I try to turn on indicator variables as acceleration parameters in the software. I have four separate numerical acceleration factors (1 arrhenius + 3 power law) related to the operating conditions, which works fine by itself. I would like to add four separate indicator factors associated with different operation modes and or product configurations (ie, continuously on, 0.5Hz on/off operation, solder type, etc), and I setup each indicator variable as a binary factor, either 0 or 1 with no stress transformation applied), but I get an error returned when I attempt to get the model to converge indicating that I can only use positive numbers for the indicator variables. The example file in the manual seems to show that what I am doing should work, and when I setup a dummy file to test it using a small amount of data it seems like it works because I don't get the error message. What would trigger this type of error message?