Keysight U4431A MIPI M-PHY Protocol Analyzer Hardware and Probing Guide
21
Setting up a U4432A SMA Differential Probe Configuration
2
Supported Link Configurations
Before you start installing the U4433A probes, plan the type of link configuration you want to probe.
This topic describes the link configurations that a U4433A probe supports.
A single U4433A probe provides four channels and can probe:
• one to four lanes of a Tx or an Rx sublink in a “One Sublink” probing setup.
• one to four lanes of a Tx or an Rx sublink in a “Both Sublinks” probing setup.
NOTE
In a “Both Sublinks“ (Tx and Rx) setup, you can use the U4433A probe to probe different
number of lanes for Tx and Rx sublinks. For instance, a x2 linkwidth for the Tx sublink and a
x4 linkwidth for the Rx sublink.
Supported Link Configuration
Number of Probe(s) Required
Module Pod(s) to be used
Number of Flying Lead Tips to be
used
One sublink of a link (Unidirectional)
For a x1 Tx or Rx sublink probing
1 U4433A probe
Pod1
1
For a x2 Tx or Rx sublink probing
1 U4433A probe
Pod1
2
For a x3 Tx or Rx sublink probing
1 U4433A probe
Pod1
3
For a x4 Tx or Rx sublink probing
1 U4433A probe
Pod1
4
Both sublinks of a link (Bidirectional)
For a x1 to x4 Tx and Rx sublinks probing
2 U4433A probes (one for each
direction)
Pod1 for one direction
Pod2 for another direction
Based on the link width of each
sublink to be probed.
NOTE
A single U4431A module can be used to probe sublinks of a single M-PHY link. If you want to
probe multiple M-PHY links, you need multiple U4431A modules.
