1. Connector: A detachable element (except adapters) that is usually attached to a cable or device for electrical connection of a transmission line system.
2. RF connector: It is a connector used in the radio frequency range.
3. Video: Radio waves with a frequency range between 3HZ∽30MHZ.
4. Radio frequency: radio waves with a frequency range of 3000HZ∽3000GHZ.
5. High frequency: radio waves with a frequency range between 3MHZ∽30MHZ.
6. Coaxial: The inner conductor has a dielectric support, and the structure can obtain the smallest internal reflection coefficient within the frequency range used in the measurement.
7. Triaxial: A transmission line consisting 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 (Class 2): A connector that is manufactured with the widest allowable dimensional deviation (tolerance), but can still ensure the minimum specified performance and inter-matching.
10. High-performance connector (Class 1): A connector that specifies the limit value of the reflection coefficient according to the frequency change. Usually, the specified dimensional tolerance is not stricter than the corresponding Class 2 connector, but it is necessary to ensure that the connector meets the reflection coefficient. It is the manufacturer's responsibility to select tighter tolerances when required.
11. Standard Test Connector (Class 0): A precision-manufactured specific type of connector used to measure the reflection coefficient of Class 1 and Class 2 connectors, and the error caused by the measurement results can be ignored.
