374 Keysight M8000 Series of BER Test Solutions User Guide
7 Setting up Patterns
• SuperSpeedPlus LFPS Based PWM Message (LBPM) - LBPM is
defined as a low power signaling mechanism for two SuperSpeedPlus
ports to communicate with each other based on LFPS signals. The
adoption of Pulse Width Modulation (PWM) is to embed the
transmitting clock in data and to allow for easy data recovery at the
receiver based on LFPS clock.
For further details on link training for USB 3.0 and USB 3.1, refer to
Interactive Link Training on page 435.
Link Training PCIe 3.0 and PCIe 4.0 Parameters
The M8070A system software allows you to test the physical layer
compliance of a PCIe 3.0 and PCIe 4.0 DUT. It provides the parameters
which can be configured for link training PCIe 3.0 and PCIe 4.0.
If the symbol width is 130, you can configure the link training parameters
for PCIe 3.0 and PCIe 4.0 to control LTSSM ((Link Training and Status
State Machine).
The following figure shows the parameters which can be configured for
link training PCIe 3.0:
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