Keysight Technologies N4000A SNS Series Operating And Service Manual

Contents

Caring for Connectors AKeysight N4000/1/2A Operating and Service Manual 65Carefully avoid wetting the plastic support bead (which is easily damaged byalcohol) inside the connector and blow the connector dry immediately with agentle stream of compressed air.Precision 7 mm connectorsWhen precision 7 mm connectors have been cleaned with the center conductorcollet removed, insert the collet and clean the mating plane surfaces again.When the connector is attached to a small component, or to a cable, calibration,or verification standard, the easiest way to do this is to put a lint-free cleaningcloth flat on a table and put a couple of drops of alcohol in the center of the cloth.It should be noted that it is not necessary to remove the collet to use this cleaningmethod.Retract the connector sleeve threads so that the connector interface is exposed.Gently press the contact end of the connector into the cloth moistened withalcohol, then turn the connector.Dirt on the connector interface will be scrubbed away by the cloth withoutdamaging the connector. Blow the connector dry with a gentle stream ofcompressed air.This cleaning method can be adapted even for fixed connectors such as thoseattached to test ports. Simply fold the cloth into several layers of thickness,moisten it, press it against the connector interface, and turn it to clean theconnector. Blow the connector dry with a gentle stream of compressed air.Cleaning interior surfacesInterior surfaces, especially on precision 3.5 mm connectors, are very difficult toreach, and it is easy to damage connectors in trying to clean them. The openingsare very small, and generally the center conductor is supported only at the innerend, by a plastic dielectric support bead. This makes it very easy to bend or breakthe center conductor.One suitable method (Figure A-4) is to cut off the sharp tip of a round woodentoothpick, or a smaller diameter wooden rod, and then to wrap it with a singlelayer of lint-free cleaning cloth.