Keysight U4431A MIPI M-PHY Protocol Analyzer Hardware and Probing Guide
19
Setting up a U4432A SMA Differential Probe Configuration
2
The following table briefly describes each of the components of the U4433A probe labeled in the
above figure.
Component
Description
Module Connector
This component connects the U4433A probe to the U4431A Analyzer module. You plug this component into one of the two pod inputs
available on the front panel of the U4431A Analyzer module.
Flying Lead Cables
This component connects the U4433A probe to the DUT via N5426A Zero Insertion Force (ZIF) tips (see
).
There are four flying lead cables in each probe and these are labeled as 0, 1, 2, and 3.
Each flying lead cable when connected to the DUT allows you to probe a lane which refers to either a Tx differential pair OR an Rx
differential pair for a given lane.
The tip of each flying lead has positions for four pins as displayed in the following figure. Pin 1 connects to the negative side of the
differential probe input and pin 4 to the positive side, The two pins in the middle are not connected/used.
Refer to
“M-PHY Signal to U4433A Flying Lead Mapping"
on page 20 to know about the flying lead pins to use for probing
various M-PHY signals.
Reference Clock
Connector
This component is used in situations where you need to probe the reference clock from DUT. Currently, the U4431A module does not
support receiving or supplying an external reference clock and therefore this connector is not used.
