Invalid Pre/Postamble Signal Error - Keysight U7233A Testing Notes

Invalid Pre/PostAmble Signal Error

This error occurs during the multiple trial run if there is no significant voltage level transits when the
driver is turned on or off during the preamble or postamble. You should verify the signals especially
the DQS and DQ if they provide a valid preamble or postamble signal. If there is no significant voltage
level transition when the driver is turned on or off during the pre-amble OR post-amble, the system
will throw an exception to prompt user to verify the signal.
Figure 73
You can disable this error message at the Configure tab. Turn the "Signal error message prompt" to
the Disable mode. This will prevent the above error message being prompt during the multiple trial
run.
DDR1 Compliance Testing Methods of Implementation
Invalid Pre/Post Amble Signal Error Message
Common Error Messages 15
193