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Why does my E6651A fail Source Modulated Power Level Accuracy in TME?

A compatibility issue exists between E6651A firmware versions and TME release 1.0.

The issue affects the Source Modulated Power Level Accuracy test, causing all datapoints to fail by a significant amount. The test limit is ±1.4dB, and failures in the region of +3dB are common with this issue.

The workaround for this issue is to downgrade the firmware to, test the E6651A, and upgrade the firmware back to once the procedure is complete.

This issue has been logged in our software quality system, and will be fixed in due course.