6281A/B Adapters Operating and Service Manual
Operation
Precision 7 mm Connectors
Except for Option 13, the 281B model adapter has a APC-7 precision 7-mm
coaxial connector. These connectors rely on uniform end-to end contact of
both conductors for electrical continuity. Consequently, the condition of the
contacting surfaces is critical: they should be kept clean and smooth. To
prevent damage when the adapter is not in use, the connector’s threaded
sleeve should be fully extended.
Performance Test The maximum SWR for the Adapters are listed in Table1. When making
these measurements, the test results must be less than those listed in Table1
plus the measurement uncertainty of the measurement system. Measurement
may be made using a standard reflectometer setup. To ensure satisfactory
performance, make sure flanges and coaxial connectors are not damaged or
worn.