DUT vs EUT?

[Pack34]

From what I've seen, Device Under Test and Equipment Under Test seem to be interchangeable terms. Is this true? always true? and is there a situation where one is more appropriate than the other?

[T3sl4co1l]

Yes, more or less.  I think of devices like individual components, whereas equipment is made from many devices.  It's kind of... being specific as a courtesy, I'd say.

I don't think there are many places where both terms are in use, and distinct?  For example, EMC regs are only concerned about EUT, and component testing is only concerned about DUTs.  Either one could use "DUT" alone, given a suitable definition elsewhere.

Tim

[Siwastaja]

Such abbreviations are meaningless and only confusing if you expect the reader to understand them automagically.

It's not a name, like "USB", so you are using it just to save keystrokes and pages, in the original sense of using an abbreviation.

You choose whichever, and do not forget to define it the first time you use it, and if you are writing a long piece of documentation, better to remind the reader about such terms every now and then - for example write the full phrase each time the term is used for the first time in each new chapter.

Adding a section listing all abbreviations used is typical and recommendable.

The question to be asked is, are you calling the thing to be tested "device" or "equipment"?

[BravoV]

The question to be asked is, are you calling the thing to be tested "device" or "equipment"?

+1 , and its just weird if a single transistor under measurement is called "equipment". 

[LaryPant]

Just to throw in a little curveball: There is also UUT - Unit Under Test.

Although UUT seems to be completely interchangeable with DUT, where as the abbreviation/term EUT would not be used for things like a piece of software, HDL module or components as was mentioned previously.

Lary

[spudboy488]

Call it whatever you want as long as you describe/define what the acronym is in the test procedure.

I design test equipment for a living. I've put together systems that test small PCBs all the way up to cellular base stations. I've always used UUT and included "UUT: Unit Under Test" in the definitions section of the test procedure.

[greenpossum]

Just call it a WUT. Expands to WUT Under Test.