Comtech EF Data CDM-750 - Manual (Page 48)

CDM-750 Advanced High-Speed Trunking Modem Revision 2
Rear Panel Connections MN-CDM750
3–2
• 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 plugs and jacks feature a Bayonet Coupling design.
3.1.1.2 Type ‘TNC’
TNC plugs and jacks 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.