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’)

Can switch media on the same network

There are rules

3-RS485x Communication Card

#18 AWG Copper, up to 5000’ over 3 NodesNetwork 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

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

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

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.

Fiber Benefits & Applications

Immune to electrical noise

Use through hazardous atmospheres

High level of security

Resist effects of moisture

Eliminates ground faults

Cost Considerations

MultimodeHigher cost fiber, lower cost electronics

ST Connectors (physical connector)

Single ModeLower cost fiber, higher cost electronics

SC Connectors (physical connector)

Driving Factor = Distance

Performance is Equal but for distance

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

Typical Fiber Connections

CPU

from ASU

NetworkData

AudioData

Class ‘B’

Class ‘A’

Fiber Transition

Single Mode

Multi Mode

NetworkData

AudioData

[1 Single 2] [2 Single 3] [3 Multi 4] [4 Multi 1]

1

2

3

4

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

Copper / Short Haul / Copper

Copper

Short Haul

CopperShort Haul

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How the Short Hauls fit in?

Interface Card plugs into RS485 Slot on CPU

Ribbon cable to NSHMx

NSHMx to Chassis

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

SIGA-CT1PS

G GGFD

2 Pair

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

Thank You!