Teledyne LeCroy Summit T24 PCIe Multi-lane Protocol Analyzer User Manual - Manual (Page 68)

Teledyne LeCroy Link Settings
56 Summit T24 PCI Express Multi‐Lane Protocol Analyzer User Manual
5.14 Link Settings
The Link options panel allows you to manage links (see Figure 5.11 on page 56 ). You can
define the basic link parameters or leave it on Auto detect. The various link settings are
described in this section (see
Figure 5.1 on page 48 : 3).
Figure 5.11: Link Options for Summit T24
5.14.1 Speed
The Speed can be set at Auto, 5.0 GT/s, or 2.5 GT/s from the drop‐down menu. The
default is Auto (see
Figure 5.1 on page 48 : 3A).
Auto: When set to Auto, the hardware auto‐determines the speed.
5.0 GT/s or 2.5 GT/s: When set to a specific speed, Teledyne LeCroy’s software forces the
hardware to record at that speed.
For Auto speed setting to work the polarity setting of lane 0 has to be correct. The
polarity can be set manually if the link is already in L0 state, or, for automatic polarity
detection, the bus has to go through a reset so the analyzer can track the polarity.
Note: Selecting Auto in the Speed drop‐down list will set the correct speed even if the analyzer does
not record a link training sequence.