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 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.
When an existing single mode driver (SMXLO or SMXHI) must be replaced with a new SMXLO2 or SMXHI2, the 3-FIBMBs must also be updated with the newer 3-FIBMB2 for compatibility. The 3-FIBMB is not compatible with 3-FIBMB2 when using single mode driver modules (SMXLO, SMXLO2, SMXHI or SMXHI2), for service replacement and network expansion applications all or some of the 3-FIBMBs may need to be updated to 3-FIBMB2. By using the 24Vdc input on the 3-FIBMB2 it may be possible to minimize the number of 3-FIBMBs that need to be upgraded.

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 Driving Factor = Distance
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
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’
Network Data
Audio Data
CPU
from ASU

12. [1 Single 2] [2 Single 3] [3 Multi 4] [4 Multi 1]
Fiber Transition
Network Data
Audio Data 4
Multi Mode 3
Single Mode 2 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. Copper / Short Haul / Copper
Transient Suppression
Copper
Short Haul
Copper
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. 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 G 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!