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Keysight AE6941A Automotive Ethernet Fixture User Guide & Methods of Implementation
1
Preliminary and Precautionary Information
Connect to the Automotive Ethernet Fixture First
To prevent twisting, bending, or applying tension to test instrument
cables or probe devices when connecting to a fixture/adapter, always
make attachments from the fixture/adapter to the device under test
(DUT) or cable under test and then attach any SMA connectors.
If the fixture/adapter must be turned or twisted to facilitate making a
connection to the DUT or test instrumentation, avoid using the
fixture/adapter alone to make this occur. Try to distribute the torque
forces along the length of the test setup and cabling. If this is not
possible, it is recommended first to loosen or disconnect any SMA
connections at the fixture/adapter make the connection to the DUT and
then re-tighten or attach the test equipment leads.
Carefully Make SMA Connections
To connect the fixture/adapter SMA connectors, follow these steps:
1 Hold the instrument coaxial cable stationary by grasping the cable
near the SMA connector.
2 Insert the mating SMA barrel and hand-tighten the free-spinning SMA
nut onto the fixture/adapter SMA connector while avoiding pulling,
bending, or twisting the test instrument coaxial cable.
3 Typically, the test instrument coaxial cable SMA connectors have flats
that accept an open-end 5/16-inch wrench. When attaching
instrument cables to the fixture/adapter, it is recommended to hold the
fixture/adapter firmly and tighten the test leads to the equipment
manufacturer's torque recommendations, normally use a 5/16-inch
open-end torque wrench for 5 in-lbs.
If the test set-up requires repositioning, first loosen, or disconnect the
SMA connections to avoid twisting, bending, or tension.
Independently Support Instrument Cables or Accessories
Excessive weight from instrument cables and/or accessories connected
to the fixture/adapter can cause damage or affect the test adapter
performance. Be sure to provide appropriate means to support and
stabilize all test set-up components.
Electrostatic Discharge (ESD) Sensitivity
The Automotive Ethernet Fixture is a passive component and is not in
itself sensitive to electrostatic discharge. However, when installed in an
active DUT, that device becomes susceptible to ESD. Observe proper
ESD precautions, further discussed later in this document.
