Keysight Technologies N5991ST3A SATA, Руководство пользователя

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46 Keysight N5991 SATA Test Automation Software Platform User Guide
5 Receiver Tests
Common Parameters for Receiver Tests
Table 6 Common parameters for receiver tests
Parameter name Parameter Description
Data Generator
Number of aligns in Framed
COMP pattern This is the number of ALIGN primitives in each ALIGN block in the test pattern used for receiver tests. This setting has
no effect on the part of the training sequence before the looped test pattern.
Error Detector
Recovery Time This is the interval after the loopback training or signal stress changing during which the DUT is allowed to
settle/recover. Errors during this time are ignored.
Use full Auto Align This parameter controls how centering the sample point in the error detector is done. If it is “true” a full AutoAlign is
used. If it is “false” TimeCenter is used instead. TimeCenter is a lot faster than AutoAlign, but AutoAlign is better at
compensating for non-ideal DUT transmitter signals.
BIST Training
Force Retraining When this parameter is “true”, a new loopback training is always done when the SJ frequency is changed.
Pause Before Auto-Align Set to “true” to pause the execution of the procedure when the DUT is in loopback mode. It allows manual
optimization of the loopback parameters.
Power Cycle Mode Controls when a power cycle is performed or requested from the user.
• Always: Apower cycle is done before every attempt to train the DUT into loopback.
• OnlyOnRetry: During first try, loopback training is done without a power cycle, and a power cycle is performed only
if that did not work.
• Never: no power cycles will be performed or requested.
• Loopback Training Max Retries: The maximum number of retries to train the DUT into loopback mode.
• BIST Activation Sequence: This parameter displays the BIST sequence type selected using the sequence
drop-down menu in the Edit Parameters window.
Power Switch Automation
Use Power Switch
Automation This parameter controls if a remote controllable power switch is used for power cycling the DUT. If it is “false”, all
following parameters (Power Switch Channel Number, Off-On Delay, Settling Time) are disabled.
Power Switch Channel
Number This sets the channel number of the power switch channel that is connected to the DUT.
Power Cycle Off-On Delay This is the duration between turning the DUT off and then turning it on again.
Power Cycle Settling Time This is the wait time after the DUT is turned on and before the test continues with loopback training.