Keysight Technologies N5991ST3A SATA, User Manual

Page: 45 / 82

N5991 SATA Test Automation Software Platform
User Guide
5 Receiver Tests
Common Parameters for Receiver Tests / 46
SATA Receiver Tests / 48
The basic principle of all SATA receiver tests is as follows:
• Keep the DUT in the Far End Re-timed Loopback Mode (BIST-L)
• Send the Framed COMP pattern with defined stress characteristics
• Use the error detector to verify that the DUT loops back the correct
pattern without errors
Most of the Rx tests continue to change the signal stress to collect more
data and re-initialize the loopback mode if the DUT terminates from it. If
the calibration data is available, the data confirms that the signal stress is
at the specified level and test point. If the calibration data is missing, a
warning message pops up. When the user explicitly ignores the warning,
the tests can be run without the calibration data.
NOTE
For Rx tests, the real-time oscilloscope is not needed.