AV Design Reference Manual - InfoComm

Chapter 4: Transmission
Connectors, continued
Termination with BNC connectors should be approached with caution. Not all BNC
connectors fit every available cable. Hundreds of different BNC connector models are
manufactured to fit varying cable size specifications and other specific applications.
With few exceptions, equipment manufacturers install female gender BNC connectors on their
equipment, and cables are terminated with male connectors.
Digital Visual Interface (DVI) Connectors
DVI connectors are a newer standard that provides for a direct digital connection of a source
to a display. These types of connections are limited to short transmission distances of about
5 m (16 ft) (e.g., between a personal computer [PC] and a monitor) and support the full
standard National Television System Committee (NTSC) resolution.
Two types of DVI connectors are:
• A 24-pin connector, which supports digital signals only.
• A 29-pin connector, which supports both digital and analog signals.
The DVI standard uses three common multi-pin connectors to terminate cables carrying
DVI signals:
• DVI-D, which carries only the digital RGBHV signal
• DVI-I, which carries analog RGBHV information as well as digital RGBHV
• DVI-A, which carries only analog video
The DVI-I connector has both digital and analog signals. For an example of 29-pin
DVI-I female connection, which carries both digital and analog signals, see Figure 4.13.
Figure 4.13
Digital video interface I connector
© 2006 BICSI ® /InfoComm International ® 4-21 AVDRM, 1st edition