Wilder Technologies QSFP-DD User Manual page 7

3. The QSFP-DD TPA 2.92mm connectors (K-Style) have flats that accept an open-end
1/4-inch or 5/16-inch wrench, depending on configuration. When attaching
instrument cables to the QSFP-DD TPA, it is recommended that the QSFP-DD TPA
high-speed connectors be mechanically held and the test leads be tightened to the
equipment manufacturer's torque recommendations, normally 5 in-lbs., using an
open-end torque wrench.
If the test set-up requires repositioning, first loosen or disconnect the 2.92mm (K-Style)
connections to avoid twisting, bending, or tension.
NOTE: A drop in signal amplitude by half or 6dB during the testing of
a channel may indicate that a cable has been mechanically pulled
free of coaxial cable connections internal to the assembly. This could
be determined by checking if the cable has any lateral play relative
to the TPA. This would only occur when the TPA has exceeded the
pull force as specified within the mechanical specification. If the
cable cannot be re-seated, the test adapter will need to be sent back
to the factory for service.
• CAUTION 6: Independently Support Instrument Cables or Accessories
Excessive weight from instrument cables and/or accessories connected to the QSFP-DD TPA
can cause damage or affect the test adapter performance. Be sure to provide appropriate
means to support and stabilize all test set-up components.
•
CAUTION 7: ESD Sensitivity
The QSFP-DD test adapters are passive components and are not in themselves sensitive to
electrostatic discharge. However, when an active DUT is installed, that device becomes
susceptible to ESD. Observe proper ESD precautions, further discussed later in this
document.
QSFP-DD Test Adapter User Manual
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©2019 Wilder Technologies, LLC
Document No. 910-0057-000 Rev. A