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Basic knowledge of connectors

13 Aug
  1. Connector: A detachable element (except for adapters) usually installed on cables or equipment for electrical connection of transmission line systems.
  2. RF connector: It is a connector used in the radio frequency range.
  3. Video: Radio waves with a frequency range of 3HZ∽30MHZ.
  4. Radio frequency: radio waves with a frequency range of 3,000HZ∽3000GHZ.
  5. High frequency: radio waves with a frequency range of 3MHZ∽30MHZ.
  6. Coaxial: The inner conductor has dielectric support, and the structure can obtain the smallest internal reflection coefficient in the frequency range used in the measurement.
  7. Triaxial: A transmission line composed of three layers of concentric conductors with a common axis and insulated from each other.
  8. Grade: The level of the connector in terms of mechanical and electrical precision, especially in terms of the specified reflection coefficient.
  9. Universal connector (level 2): ​​a connector that is manufactured with the widest allowable dimensional deviation (tolerance), but can still guarantee the minimum specified performance and interoperability.
    Note: The requirements for reflection coefficient may or may not be specified.
  10. High-performance connector (level 1): A connector that specifies the limit value of the reflection coefficient according to frequency changes. Generally, the specified dimensional tolerance is not stricter than the corresponding level 2 connector, but it is necessary to ensure that the connector meets the reflection coefficient. When required, the manufacturer is responsible for choosing tighter tolerances.
  11. Standard test connector (level 0): a specific type of precisely manufactured connector used to measure the reflection coefficient of level 1 and level 2 connectors. The error caused by the measurement results can be ignored.
    Note: The standard test connector is usually part of the adapter between different types, and the connection between the adapter and the precision connector forms part of the test equipment.
  12. Hermetic connector: a connector that can meet the specified gas, moisture or liquid tightness requirements.
  13. Barrier seal: a seal that prevents gas, moisture or liquid from entering the connector housing along the axial direction.
  14. Panel sealing: Prevent gas, moisture or liquid from entering the seal between the fixed or adapter housing and the panel through the mounting hole
  15. Note: The seal is usually provided as a separate product. Mating surface seal: a seal to prevent gas, moisture or liquid from entering the interface of a pair of mating connectors. Hermetic seal: the seal that meets the requirements of test Qk in IEC60068-2-17 “Basic Environmental Test Procedure Part 2: Test-Test Q: Seal”.
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