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System Limits

System Limits. 1. Control facilities CCU Wireless 245 addresses max. Max. 150 Wireless Discussion Units Max. 93 Interpreter desks Max. 2 DDI’s (Intercom Operator and Ambient Mic)

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System Limits

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  1. System Limits • 1. Control facilities CCU Wireless • 245 addresses max. • Max. 150 Wireless Discussion Units • Max. 93 Interpreter desks • Max. 2 DDI’s (Intercom Operator and Ambient Mic) • Channel selectors are passive units and using one reserved address for all. Reserved addresses are not a part of the 245! • 2. Power handling Capacity • Central Control Unit 130 Watt • Extension Power Supply 255 Watt • 3. DCN Cable length • After 100 meter of system cable the signal needs to be regenerated. • Units with the regenerating signal-outlets: • Trunk Splitter & Trunk Splitter protected • Extension power supply • The number of serial tap-off connections from the Wireless CCU to the last tap-off in a branch must not exceed 4. • 250 meter max. from the Wireless CCU to the last unit in the trunk. I&U Instructions DCNW Tech SD Design Calc

  2. Power Consumption in Watt (DCN part) • Dual Delegate Interface 4.5 W Inclusive all connected FM panels. • Interpreter’s Desk 3.6 W • Channel selector unit 0.9 W • Data distribution unit 2.0 W • Extension Power Supply 0.8 W • Trunk Splitter 1.3 W • Trunk Splitter Protected 1.4 W Watt value includes the 2 meter (6.5 ft.) unit-cable. DCNW Tech SD Design Calc

  3. Power Consumption in Watt (Optical part) • Wireless Access Point 4.0 W • Audio Expander Analogue 7.6 W • Audio Expander Digital 6.0 W • Cobra net interface 10.5 W • Optical Network splitter 3.9 W • Fiber Interface (POF/GOF or GOF/POF) 4.6 W I&U Instructions DCNW Tech SD Design Calc

  4. Trunk Tap-off 65 W Power handling capacities Central Control Unit Extension Power Supply 65 W 65 W 85 W 65 W 85 W 85 W 65 W 130 W 255 W I&U Instructions DCNW Tech SD Design Calc

  5. Max. all trunks: • 36 Interpreter desks Max. number of units within 100M from CCU • Max. per trunk: • 18 Interpreter desks Central Control Unit 1 n 18 Cable length per outlet to the last unit  100M I&U Instructions DCNW Tech SD Design Calc

  6. Trunk Tap-off Max. number of units within 100M from EPS • Max. per trunk: • 23 Interpreter desks • Max. all trunks: • 69 Interpreter desks Extension Power Supply 1 n 23 Cable length per outlet to the last unit  100M I&U Instructions DCNW Tech SD Design Calc

  7. Extension Power Supply Trunk-in Trunk-out ** * * * Tap-off outlets which regenerating the digital signal. Trunk Outlet & Tap-Off Outlets • For Trunk-cable splitting with regenerating the digital signal. Trunk Splitter Trunk Splitter Protected I&U Instructions DCNW Tech SD Design Calc

  8. * Tap-off outlets with a limitation of 4,5 Watt. * * Using the Trunk Splitter Protected I&U Instructions DCNW Tech SD Design Calc

  9. Central Control Unit Tap-off Trunk-line Trunk Splitter Tap-off Trunk-line Loop Through Tap-Off Limitations Extension Power Supply 1st Tap-off 2nd Tap-off 1st Tap-off 3rd Tap-off 2nd Tap-off 4th Tap-off 3rd Tap-off 5th Tap-off 4th Tap-off I&U Instructions DCNW Tech SD Design Calc

  10. Central Control Unit Regenerative Tap-off Trunk Splitter Extension Power Supply Regenerative Tap-off Trunk Splitter Extension Power Supply Maximum Cable Lengths 250M I&U Instructions DCNW Tech SD Design Calc

  11. Central Control Unit 10m (32.8ft.) 20m (65.6ft.) 50m (164ft.) Longest Extension Cable example • The length of cable used in a system has a direct influence on the load of a system. • The second in- line trunk- splitter has two extension cables connected to it, with lengths of 20 m and 50 m. • When determining the cable length of a Trunk-outlet or Tap-off outlet, the longest extension cable only is taken in to account. • Therefore, the total extension cable lengthfrom a single Trunk-outlet of the CCU is calculated as 10+50= 60 m (196.8 ft.) I&U Instructions DCNW Tech SD Design Calc

  12. Power calculation Example-1 Central Control Unit 10x 5x 1 2 40m. DCNW Tech SD Design Calc

  13. Trunk Tap-off Power calculation Example-2 Extension Power Supply 10x 10x 35m. 3 4 5 DCNW Tech SD Design Calc

  14. Cable correction graph I&U Instructions DCNW Tech SD Design Calc

  15. Fiber Interface • The fiber interface is used to: • convert from plastic optical fiber (POF) cable to glass optical fiber (GOF) cable and vice versa. • cover distances of more than 50 m in the optical network. I&U Instructions DCNW Tech SD Design Calc

  16. Nodes Cable lengths graph I&U Instructions DCNW Tech SD Design Calc

  17. Coverage Area Wireless Access Point • The maximum coverage area of the wireless access point is dependent upon its power. DCNW Tech SD Design Calc

  18. How to Design and Calculate a system End of section DCNW Tech SD Design Calc

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