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The types of coaxial cables used by Comtech EF Data are 'BNC', 'TNC', 'N', 'F', and 'SMA'.
Coaxial cables (plugs) and their mating connectors (jacks/sockets) are available in two coupling
styles: Bayonet or Threaded.
•
Bayonet Coupling Style: The jack has a pair of guideposts that accommodate the plug's
lockdown slots. This lockdown design provides secure assembly without over-tightening
the connection.
•
Threaded Coupling Style: The jack features external threads. The plug shell features
internal threads, and has either a knurled outer surface to permit hand-tightening of the
connection, or hex flats to accommodate torqued installation.
•
Connection Instructions:
•
Bayonet Coupling Connections: Use the plug slots to guide, then slide the plug onto
the jack posts. Then, turn the plug clockwise until the jack posts are fully seated within
the plug slot.
•
Threaded Coupling Connections: Engage the plug onto the jack threads, and then turn
the plug clockwise until it is fully threaded onto the jack. Do not over-tighten the
connection.
3.1.1.1
Type 'BNC'
BNC connectors feature a Bayonet Coupling design.
3.1.1.2
Type 'TNC'
TNC connectors feature a Threaded Coupling design similar to
Type 'N', Type 'F,' and Type 'SMA' connectors.
3.1.1.3
Type 'N'
Type 'N' connectors feature a Threaded Coupling design similar
to Type 'TNC', Type 'F', and Type 'SMA' connectors.
3.1.1.4
Type 'F'
Type 'F' connectors feature a Threaded Coupling design similar to
Type 'TNC', Type 'N', and Type 'SMA' connectors.
Rear Panel Connectors and Pinouts
CDM-425 Advanced Satellite Modem
3–2
Revision 0
MN-CDM-425
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