Keysight Technologies N4000A SNS Series Operating And Service Manual

Contents

Caring for Connectors AKeysight N4000/1/2A Operating and Service Manual 61Visual InspectionVisual inspection and, if necessary, cleaning should be done every time aconnection is made.Metal and metal by-product particles from the connector threads often find theirway onto the mating plane surfaces when a connection is disconnected and evenone connection made with a dirty or damaged connector can damage bothconnectors beyond repair.Magnification is helpful when inspecting connectors, but it is not required andmay actually be misleading. Defects and damage that cannot be seen withoutmagnification generally have no effect on electrical or mechanical performance.Magnification is of great use in analyzing the nature and cause of damage and incleaning connectors, but it is not required for inspection.Obvious defects and damageExamine the connectors first for obvious defects or damage — badly worn plating,deformed threads or bent, broken, or misaligned center conductors. Connectornuts should move smoothly and be free of burrs, loose metal particles, and roughspots.Immediately discard, or mark for identification and send away for repair, anyconnector that has obvious defects like these.Mating plane surfacesFlat contact between the connectors at all points on their mating plane surfaces isrequired for a good connection. Therefore, particular attention should be paid todeep scratches or dents and to dirt and metal or metal by-product particles onthe connector mating plane surfaces.Also look for bent or rounded edges on the mating plane surfaces of the centerand outer conductors and for any signs of damage due to excessive or unevenwear or misalignment.Light burnishing of the mating plane surfaces is normal and is evident as lightscratches or shallow circular marks distributed more or less uniformly over themating plane surface. Other small defects and cosmetic imperfections are alsonormal. None of these affect electrical or mechanical performance.