GRL-PCIE5-CEM-RXA User Guide and MOI
Rev7.0
© Granite River Labs 2022 Version 7.0, June 2022. Updated 06.29.2022
Page 49 of 123
Link Training CTLE Gain
Select the CTLE gain for the BERT error detector.
Log Link Training
Select ‘True’ to enable logging for the link training steps.
BER Automation
Select ‘PCIe Link Training’ to run BER automation tests using Anritsu PCIe
Link Sequencer software loopback method, or select ‘Manual’ to run BER
automation tests manually.
Prompt Before Link EQ
Training
Select ‘True’ to enable a prompt to come up prior to start running Rx link
equalization tests.
Ignore Failed Link Training
Select ‘True’ to ignore tests that have failed when running the PCIe
loopback link training sequence.
Compliance BER
Measurement Time (s)
Set the duration in seconds to complete the Rx compliance testing to
measure Bit Error Ratio (BER).
Maximum Compliance Error
Set the maximum error count for error checking during Rx compliance test
runs.
Margin Test Measurement
Time (s)
Set the duration in seconds to complete the Rx SJ margin search testing.
Margin Test Max Steps
Set the maximum number of steps for stepping through margins during
the SJ margin search test.
Margin Test Step Size (%)
Set the step size in percentage for stepping through margins during the SJ
margin search test.
Maximum Margin Test Error
Set the maximum error count for error checking during the SJ margin
search test.
Loopback Mode
Select ‘Recovery’ (recommended) or ‘Configuration’ to be used as the link
training method for placing the DUT in the loopback state.
Default Link Training
Sequence
Select ‘
Yes
’
to enable the default sequence for link training to be used.
Retrain When SJ Frequency
Changed
Select ‘True’ to re
-send link training sequence when there is a change in
the SJ frequency.
Margin Search Live Plot
Select ‘True’ to enable a graphical margin
plot that updates as the margin
test is performed to indicate progress of the test results.
Apply CM
Select ‘Yes’ to integrate the common mode component in a specific test.
PPG Start Preset
Select the preset co-efficient to be used at the start of link training.
DUT Initial Preset
Select the initial preset co-efficient for the DUT to be applied during Rx
compliance test runs.
PPG Final Preset
Select the preset co-efficient to be used after link training is successful for
the final BER test. If
‘
Auto
’ is selected
, a negotiated preset will be applied
during the final BER test.
