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Setting up an E5405A Soft Touch Midbus Probe Configuration for U4421A Module
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Keysight U4421A MIPI D-PHY Analyzer and Exerciser Hardware and Probing Guide
Connecting the E5405A probe to the DUT and U4421A Module
The E5405A probe connects to the DUT via a retention module and to the U4421A module via the
U4201A/N2815A cable.
1 Connect the E5405A probe to the U4421A module.
a
Plug the module connector of the U4201A/N2815A cable into the Analysis port on the front
panel of the U4421A module.
b
The module connector of the cable has two thumb screws. Hand-tighten these screws. Do not
over tighten the screws.
c
Connect the other end of the U4201A/N2815A cable to the cable connector component of the
soft touch probe.
2 Connect the E5405A probe to the DUT.
a
Note the location of the keying feature on the E5405A probe tip and the matching feature on
the E5403A retention module that you mounted on the DUT circuit board.
b
Orient the probe so that the keying features align.
c
Carefully align the probe tip to the retention module and insert the probe tip into the retention
module. Fully compress the pins evenly across the array of pins. You must push the probe tip
down evenly.
d
Hand-tighten the thumb screws on both sides of the probe tip.
Supported Probe Configurations
A single E5405A probe can probe four D-Phy data channels and one clock channel. It can support:
• a x1 to x4 unidirectional D-PHY link configuration
• a x1 to x4 bidirectional D-PHY link configuration.
Analysis port on U4421A module
NOTE
The U4201A cable has two probe connectors - Odd and Even. If you are using
this cable, then connect the probe to the connector labeled "Odd"on the cable.
The probe connector labeled "Even" on the cable is not used with the U4421A
module.
