Professional Installation Recommendations 2: Sources of Impairments
HomePNA is a high speed digital network that, like digital cable TV and other high performance home networking technologies, requires good connectors and connections to operate. HomePNA 3.1 operates well over existing coax cables installed for analog or digital cable television service providing that the coax is not damaged and that there are no defective or inappropriate components installed. HomePNA member JDSU provides the following types of impairment sources that can be encountered by an installer.
1. Defective connectors -- these can cause a cable to be open, shorted, or have loss. They can also cause standing waves.
2. Splitters -- these have inherent loss (HomePNA is designed to compensate for the loss encountered in most installations). Splitters can cause standing waves (low quality splitter, open port) and can be improperly installed.
3. Lose, worn or bad barrels and wall plates
4. Un-terminated coax segment
5. Crimped, pinched or damaged coax
6. Defective or improperly installed diplexer
7. Amplifiers or A/B switches
HomePNA strongly recommends that installers test the wiring before and during installation to ensure that the network will provide proper performance. The full JDSU presentation and other installation information is available on the HomePNA members-only website to all HomePNA