[BigTone]

SBE - at last an acrym I like!

All this calibration talk makes me thirsty!

Anyways, as part of my day job I always state the following :

'The answer, no mater what the question is, is Design of Experiments'

and as I develope calibrations as another part of my day job (for the chemicals industry and others) I have a pretty good idea how to get the absolute max out of any piece of kit.

The one problem with SBE it that it is not systematic, and assumes that the variables don't interact with each other (which the clearly) so the change one varaible at a time approach is flawed, and requires a large number of experiments to get a decent optimum, if ever. The best method is to vary all the varaibles at the same time, and see what the overall effect is and this is where you need to quantify the response, but response here is tricky (best blacks, best colours, nice picture?). With this lack of a decent reference one needs to use DVE, to get the set into an established reference point, and then dabble.

Now I have the weekend to think about running a DoE with a calibration device to see if I can find a quantity that can be used to create a response surface for the calibration. But, you would have thought that the guys/gals that designed the set would have thought of this too? or an I being naive?

Cheers

BT