Issue link: https://www.e-digitaleditions.com/i/1066130
26 I ICT TODAY Centralized Node Centric Pros Cons TABLE 2: Pros and cons of the centralized node centric architecture. • Can employ structured cabling • Relatively easy administration • Minimal connections • Only requires centralized power in TR • Optimizes use of PoE power • Reduces cabling from nodes to fixtures • Supports all IB applications speeds • Limited flexibility to support MAC activity • High volume of cable • Additional connection point FIGURE 9: Centralized node centric architecture. Centralized Zone - Fixture Centric Pros Cons TABLE 3: Pros and cons of the centralized zone-fixture centric architecture. • Employs structured cabling • Easily administered • Only requires centralized power in TR • Provides support of future IB applications • Supports all IB application speeds • Optimal support of MAC activity • High Day One cabling CAPEX • Additional connection point FIGURE 10: Centralized zone-fixture centric architecture. occurs in the area of the final seated contact position, the result can cause increased resistance resulting in everything from power delivery inefficiencies to compromised connector reliability. Some connecting hardware manufacturers have succeeded in ensuring that arc location that occurs during the unmating cycle is separate from the fully mated position (see Figure 8). Connecting hardware having the required performance for mating and unmating under the relevant levels of electrical power and load (i.e., compliant to the test schedule described in IEC 60512-99-002 for engaging and separating connectors under electrical load) should be chosen. ENIE, MEENIE, MINEY, MO The cabling topology can take several forms and can vary depending on application speeds, intelligent building applications and cost among other variables. For example, when connecting low-voltage LED lighting, the cabling can be fixture centric or node centric. In a decentralized