There’s a quick way to tell if a test system’s data architecture is production-ready.

Look for the decoder.

Almost every development team builds one — usually an Excel workbook or small script that loads a test log file and makes it readable.

In development it works great.

One engineer.
One file.
One UUT.

But the decoder is actually a warning sign.

It means the raw output wasn’t structured for analysis in the first place.

That’s fine for debugging. It’s not fine for manufacturing.

Factories don’t ask single-file questions. They ask population questions:

• Which channel is driving failures?
• Is yield shifting with firmware revisions?
• Is a test station drifting?
• What does the failure Pareto look like across thousands of units?

A tool designed to load one file at a time can’t answer those questions.

Rule of thumb:

If your analysis tool loads one file at a time, it was built for debugging — not manufacturing intelligence.