Keysight Technologies U4301 User Manual page 57

Keysight U4301 PCIe Gen3 Analyzer User's Guide
a Select the Simple Trigger option.
b Select the Trigger on Packets or Ordered Sets Trigger Mode option.
(The Trigger when Stop button is pressed Trigger Mode option can be useful, for example, to see
the events that lead up to a stop, halt, etc.)
c From the Global Filter listbox, select the following options:
i
From the Store everything including Logical Idles field, select whether you want to enable or
disable the storage of all types of ordered sets and packets including the logical idles in
the capture memory.
ii
From the Store CLKREQ# Transitions field, select whether you want to enable or disable the
storage of the Reference Clock Request - CLKREQ# signal's assertion and deassertion in
the capture memory. Enabling this storage allows you to capture and view CLKREQ#
related data exchanged for the L1.1 and L1.2 substates transitions.
iii
If you disable the Store everything including logical idles field, then the Filter Off/ Store
Everything drop-down list is activated. From this list, you can select the types of ordered
sets and TLP/DLLP packets that you want to filter out from getting stored in analyzer
memory. The options selected from this list act as the storage qualifiers. The selected
types of ordered sets and packets are acquired but are not qualified to be stored in the
analyzer's memory. If you select the Filter Everything option from this list, then none of
the acquired samples will qualify to be stored in the analyzer memory. As a result,
analyzer will keep running and you need to stop it manually because analyzer keeps
Setting Up Triggers 6
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