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NOTE
System Maintenance
1.0 mm Connector Care
Care of 1.0 mm connectors is discussed throughout the manual of the
85059A 1.0 mm calibration kit (Agilent part number: 85059-90003). The
basics of connector care are outlined below.
Free movement during connection
When you connect two devices, at least one of them should be able to move
freely. If both devices must be rigidly clamped or fixtured, pay careful
attention to connector alignment in the fixture setup. In the case of
misaligned connection, there is a great risk of resulting stress damage.
Mating plane surfaces
Flat contact between the connectors at all points on their mating plane
surfaces is required for a good connection. If a connector is dirty or
defective, it will not make a good connection, and the attempt to connect it
may cause further damage. For this reason, connectors require frequent
inspection and cleaning.
Connector wear
Connector wear eventually degrades performance; worn connectors must be
replaced. The more a connector is used, the faster it wears and degrades. The
wear is greatly accelerated when connectors are not kept clean.
Calibration devices should have a long life if their use is on the order of a
few times per week. Test port connectors may have many connections each
day, and are therefore more subject to wear. To minimize wear, use an
adapter (available as part of the 85059A Calibration Kit) as a test port saver.
Visual inspection
Connector threads and mating surfaces should be inspected using a
magnifying lens (at least 10X magnification). Good lighting (such as a
halogen task light) is necessary to see damage on a connector. Defects to
look for include:
•
Badly worn plating (burrs, blisters, exposed metal)
•
Deformed threads
•
Bent, broken, or misaligned center conductors
•
Dirt (particularly in the form of loose metal particles)
•
Deep scratches or dents
•
Any sign of damage from uneven wear or misalignment
Light burnishing of the mating plane surfaces is normal, and is evident as
light scratches or shallow circular marks distributed more or less uniformly
over the mating plane surface. Other small defects and cosmetic
imperfections are also normal.
5-4 8510XF Network Analyzer Systems
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