I am defining mediocre as a die simulator that doesn't measure current and voltage simultaneously, that doesn't mnimize secondary heat losses, and that uses temperature measuring of unknown linearity or uncertainty. The Innovatek die simulator may (or may not) be any good. Without honest specs posted regarding it, though, I am dumping it in that category of mediocre. +/- 1% would be not too bad if that was in the final "C/W" result; +/- 10 or 20% isn't so good though...
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