The Windows build on Tektronix scopes is from the Long-Term Servicing Channel (LTSC), specifically Windows 10 Enterprise 2016 LTSB (Long-Term Service Branch 1607). You can read more about the LTSC here: -us/windows/whats-new/ltsc/
To download the LTSC ISO file, please visit -us/evalcenter/evaluate-windows-10-enterprise in your web browser. Then you will see a screen as in the image below. On this screen, select LTSC version and click Continue.
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