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EST3 Network Communications

EST3 Network Communications. Network and Audio Data Upgrades. Communication Methods. Standard Copper Cable, RS485 Card Fiber Optic Interface Multimode Single Mode, High and Low Output Telco Copper Lines, Short Haul Modem. Common Communication Features. Style 4 or 7 (Class ‘B’ or ‘A’)

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EST3 Network Communications

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  1. EST3 Network Communications Network and Audio Data Upgrades

  2. Communication Methods • Standard Copper Cable, RS485 Card • Fiber Optic Interface • Multimode • Single Mode, High and Low Output • Telco Copper Lines, Short Haul Modem

  3. Common Communication Features • Style 4 or 7 (Class ‘B’ or ‘A’) • Can switch media on the same network • There are rules

  4. 3-RS485x Communication Card • #18 AWG Copper, up to 5000’ over 3 Nodes • Network Data, 90Ω, .3 µf • Audio Data, 90Ω, .09 µf • Use 3-RS485B for… • Class ‘B’ Network Data • Class ‘A’ Network Data • Class ‘B” Audio Data • Use 3-RS485A for… • above plus Class ‘A’ Audio Data

  5. 3-FIBMB2 Fiber Optic Interface • Network Data & Audio on the same board • Multimode & Single Mode Fiber both Lo and High output • Mix Fiber [TYPES] and RS485 Copper Communications

  6. 3-FIBMB2 Fiber Optic Interface • SMXLO2 Single Mode Transceiver • Approx. 8.7 miles, 16 dBm budget • SMXHI2 Single Mode Transceiver • Approx. 24.85 miles, 29 dBm budget • MMXVR Multimode Transceiver • Approx 7000 feet, 10 dBm budget

  7. Transitions • Copper to Fiber • Any Fiber to Any Fiber • NO Fiber transition to Short Haul at the same node, need copper between • NO Fiber or Short Haul at an Annunciator, copper only • *Retrofit or upgrades to existing EST3 single mode systems require specific considerations.

  8. Fiber Benefits & Applications • Immune to electrical noise • Use through hazardous atmospheres • High level of security • Resist effects of moisture • Eliminates ground faults

  9. Cost Considerations • Multimode • Higher cost fiber, lower cost electronics • ST Connectors (physical connector) • Single Mode • Lower cost fiber, higher cost electronics • SC Connectors (physical connector) • Driving Factor = Distance • Performance is Equal but for distance

  10. 3-FIBMB2 Fiber Optic Interface • 3-FIBMB2 • Fiber Optic Interface • Transceivers • SMXLO2 • SMXHI2 • MMXVR • 24 VDC input for communications during servicing or updating 3-FIBMB to 3-FIBMB2 installations

  11. Typical Fiber Connections Class ‘B’ Class ‘A’ NetworkData AudioData CPU from ASU

  12. Fiber Transition NetworkData AudioData 4 Multi Mode 3 2 Single Mode 1 [1 Single 2] [2 Single 3] [3 Multi 4] [4 Multi 1]

  13. Short Haul Modem 3-NSHMx • Up to 6 miles between nodes • Uses 2 Pair existing copper telco lines (must have continuity) • Integrated test modes • Accessories • transient suppression & ground fault • Media Switch Conditions: • Standard copper to Short Haul • Short Haul to standard copper • Short Haul to Short Haul • 3-NSHM1 & 3-NSHM2

  14. Transient Suppression Transient Suppression Transient Suppression Transient Suppression Copper / Short Haul / Copper Copper Copper Short Haul Short Haul

  15. How the Short Hauls fit in? • Interface Card plugs into RS485 Slot on CPU • Ribbon cable to NSHMx • NSHMx to Chassis

  16. G G 3-NSHMx Ground Fault Detection • GFD • Short Haul modem wiring is opto isolated • GFD module monitors ground fault on isolated wires • Requires 24 VDC & SIGA-CT1 to monitor 2 Pair GFD PS SIGA-CT1

  17. Short Haul Design Considerations • Network Data Only – No Audio • Cannot use at Annunciators • Requires two pairs, runs full duplex • Cannot have Short Haul and Fiber at the same node

  18. Thank You!

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