[Canadian]

Darren can you mock up a pic of the contraption you're going to use for the lamp and meter mount (I can't picture it)? I agree with your idea of using a completely sealed and opaque container to eliminate any ambient light skewing the results. The only difficulty I forsee is, in using a sealed box for the lamps and meter, you're going to have to allow for some ventillation with a fan or something so the temp doesn't get crazy-hot inside there.


I don't really see any need to test the lamps and ballasts for an entire month...unless of course your motivation for this testing has changed. If you're still just testing to see if one of them there ballasts, which will remain unnamed, is underdriving VHOs then you should be able to just run them for 24-48 hours and ensure that you do the same for each test and ballast. This way you can do the same test 3 times for each ballast and take the average rather than doing only one test which could give erroneous results for one reason or another.