Comnet FDX2HSDM1B-M Specsheet

Dual High Speed RS485 Data Transceiver

FDX2HSD(M,S)(1,2)(EA,EB)/M

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2

The ComNet™ FDX2HSD(M,S)(1,2)(EA,EB)/M data transceivers provide point-to­point or drop-and-repeat transmission of two independent simplex or duplex
high-speed RS485 (2W) data signals over one optical fiber. The transceivers are
transparent to data encoding allowing for broad-range compatibility. Models
within this series are available for use with multimode or single mode optical fiber
and feature built-in DIP switch-selectable bias and termination resistors for each data
channel. Plug-and-play design ensures ease of installation requiring no electrical or
optical adjustments. Each transceiver incorporates bi-color (Red/Green) indicating
LEDs for monitoring proper system operation, including the location of fiber
breaks. The FDX2HSD/M units are medium size surface mount modules, and they
may be DIN-rail mounted by the addition of ComNet DIN rail adaptor plate (model
DINBKT1, sold separately).

FEATURES

› Data Rates to 1Mbps

› Meets RS485 (2W) specifications

› Tested and certified by an independent laboratory for full

compliance with the environmental requirements (ambient
operating temperature, mechanical shock, vibration, humidity
with condensation, high-line/low-line voltage conditions and
transient voltage protection) of NEMA TS-1/TS-2 and the
Caltrans Specification for Traffic Signal Control Equipment.

› Robust design assures extremely high reliability in

unconditioned out-of-plant/roadside environments

› NTCIP compatible

› Built-in Fiber Link Tester - allows for the testing of the fiber.

› Remote Fault Indication allows the user to determine when a

fiber break or loss of prime operating power has occurred, or
a transceiver in the field has failed

› Voltage transient protection on all power and signal input/

output lines provides protection from power surges and other
voltage transient events.

› Wide optical dynamic range: optical attenuators are never

required

› Bi-color (Red/Green) LED status indicators provide rapid

indication of critical operating parameters

› Lifetime Warranty

› Made in the USA

APPLICATIONS

› Access Control Systems

› Building Automation and Environmental Control Systems

› Computer/Data Equipment

› Fire and Alarm Systems

› Traffic Signal Control Equipment

LIFETIME WARRANTY WWW.COMNET.NET TECH SUPPORT: 1.888.678.9427

FDX2HSD(M,S)(1,2)(EA,EB)/M

SPECIFICATIONS

Data

Data Channels 2
Data Format 2-wire RS485 w/ Tri-State, Manchester, Bi-Phase,

Sensornet
Data Rate DC-1Mbps
Operating Mode Asynchronous, simplex or full-duplex
Bit Error Rate <10-9 @ Maximum Optical Loss Budget

Wavelength 1310/1550nm

Dual High Speed RS485 Data Transceiver

Power

Operating Voltage Range 8-36VDC
Power Consumption 4W

Electrical & Mechanical

Current Protection Automatic Resettable Solid-State Current Limiters
Circuit Board Meets IPC Standard
Size (LxWxH) 4.1 × 3.7 × 1.1 in. (10.4 × 9.4 × 2.8 cm)
Shipping Weight <2 lb./0.9 kg

Number Of Fibers 1 or 1in/1out

LED Indicators Receive Data Active, Transmit Data Active,

Port A Fiber Link Status, Port B Fiber Link Status

DIP Switches

1 – 3 Ring Length (SHR Only)
4 Master / Remote (SHR Only)
5 & 6 680 ohm Pull Up/Pull Down for Bias on RS485 bus
7 & 8 120 ohm Termination across RS485 bus

Environmental

MTBF >100,000 hours
Operating Temp -40ºC to +75ºC
Storage Temp -40ºC to +85ºC
Relative Humidity 0% to 95% (non-condensing)

[1] May be extended to condensation conditions by adding suffix ‘/C’ to model number

for conformal coating.

1

Connectors

Optical ST
Power Terminal Block
Data Terminal Block
Contact Terminal Block

ORDERING INFORMATION

Fibers

Part Number Description

FDX2HSDM1EA/M RS485 (2W) “A” End Point 1 Multimode 62.5/125μm 16 dB 4 km (2.5 mi)

FDX2HSDS1EA/M RS485 (2W) “A” End Point 1 Single Mode 9/125μm 23 dB 69 km (43 mi)

FDX2HSDM1EB/M RS485 (2W) “B” End Point 1 Multimode 62.5/125μm 16 dB 4 km (2.5 mi)

FDX2HSDS1EB/M RS485 (2W) “B” End Point 1 Single Mode 9/125μm 23 dB 69 km (43 mi)

FDX2HSDM2/M RS485 (2W) Repeater 2 Multimode 62.5/125μm 16 dB 4 km (2.5 mi)

FDX2HSDS2/M RS485 (2W) Repeater 2 Single Mode 9/125μm 23 dB 69 km (43 mi)

Accessories
Options

DC Plug-in Power Supply, 90-264 VAC, 50/60 Hz (Included)
Add suffix ‘/C’ for Conformally Coated Circuit Boards (Extra charge, consult factory)
DIN-Rail Mounting Adaptor Plate Kit – With mounting hardware (Optional, order model DINBKT1)

Req’d Fiber

Optical
Pwr Budget

Max
Distance

NOTE: This product requires a fiber ins tallation with a minimum 30 dB connector return loss. The use of Super Polish Connectors is recommended. Complies wit h FDA Performance Standard
for La ser Product s, Title 21, Code of Federal Regulations, Sub chapter J. In a contin uing effor t to improve and advance tec hnology, produc t specific ations are subjec t to change wit hout notice.

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GILDERSOME

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USA

T: 203.796.5300

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LEEDS, UK LS27 7LE

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F: 203.796.5303

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T: [phone]

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TECH SUPPORT: 1.888.678.9427

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F: [phone]

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[e-mail]

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26 Apr 2013© 2013 Communic ation Netwo rks. All Righ ts Reserv ed. “ComNet ” and the “ComNe t Logo” are regi stered tra demarks of Co mmunication Ne tworks.