Hello Rumbero65,

I am not familiar with Hardware and Test Software so forgive me if I go down the wrong track here but l will try to help.

Firstly, I am assuming that you are not being compelled to use any particular type of approach to the test? I ask because some folks start down a route and then may get audited down the line by a prime customer or organisation who expect something different.

My assumption from this point is that you are fairly flexible as to the options for the approach to this problem

Each Test Bay checks an output which can be referenced to some reference standard and these outputs across bays should not be detectibly different from each other. As you have mentioned a type 1 Gage study I assume that for each bay there is only one output of interest.

My approach would be to run a consistency study for one bay, the objective of this would be to understand whether or not the output is consistent before comparing the different bays to each other. The data gathering process would be the same as your Gage Type 1 Study except that you would input the data in time series order into an Individual moving Range Chart instead of the standard run chart.

At the basic level, any observations that beach the upper control limit indicate a lack of consistency which would need to be addressed before the summary statistics could be used. The achievement of consistency is the foundation level and an achievement in itself, don't forget to record anything that you may feel would contribute to the variation you see.

Now you have confidence that you can achieve consistency you can compute the Est standard deviation = Average moving Range/1.128 (n=2), you can compute the consumption of tolerance (min 96% confidence) =2.7 x Est standard deviation/tolerance band, if you a require a min 99.9%

confidence use 5.4 as the multiplier as opposed to 2.7.

To compare bays carry out the consistency check for each bay, ensure you have consistency, then carry out an equivalency study across all bays. For more details on equivalency see Dr Don Wheelers articles in Quality Digest, it's a simple test and you can check for equivalence of the standard deviation and bias if you wish using your reference sample.

This procedure I have outlined can be ran in its entirety in spcforexcel software, I'm not aware of its inclusion in other softwares but that doesn't mean it isn't there.

For more information on measurement consistency please refer to Dr Wheelers book EMPIII, its an invaluable resource.

Hope this helps!