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21
Preventive Maintenance
SMA Connector Precautions
Use caution when mating SMA connectors to any precision 3.5 mm RF
connector. SMA connectors are not precision devices and are often out of
mechanical tolerances, even when new. An out-of-tolerance SMA connector
can ruin a 3.5 mm connector on the first mating. If in doubt, gauge the SMA
connector before connecting it. The SMA center conductor must never extend
beyond the mating plane.
Cleaning Procedure
1
2
3
Do not allow excessive alcohol to run into the connector. Excessive alcohol entering
C A UTI ON
the connector collects in pockets in the connector's internal parts. The liquid will
cause random changes in the connector's electrical performance. If excessive
alcohol gets into a connector, lay it aside to allow the alcohol to evaporate. This may
take up to three days. If you attach that connector to another device it can take
much longer for trapped alcohol to evaporate.
456
Blow particulate matter from connectors using an environmentally-safe
aerosol such as Aero-Duster. (This product is recommended by the United
States Environmental Protection Agency and contains tetrafluoroethane.
You can order this aerosol from Agilent (see
Use alcohol and a lint-free cloth to wipe connector surfaces. Wet a small
swab with a small quantity of alcohol and clean the connector with the
swab.
Allow the alcohol to evaporate off of the connector before making
connections.
Table
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Agilent E5505A User's Guide
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