Comnet FDC2M Specsheet

Fiber Optic Cable Breakage Monitor/Detector

FDC1 / FDC2

HARDENEDINCLUDED

The ComNet™ FDC1 single-channel and FDC2 dual-channel modems are designed
to detect and report a breakage or the loss of optical signal in either multimode or
single-mode fiber plants. Featuring a self-contained transmitter and receiver, these
units provide an optical output that is transmitted continuously through a customer­furnished fiber loop, where it returns to the internal receiver section. Should the
optical path be lost through a deliberate or unintentional breakage of the fiber, relay
contacts in the modem immediately change their state and report the loss of optical
signal. These contacts are user-configurable as either normally open (NO) or normally
closed (NC), and may be utilized for either a local or remote indication of cable plant
tampering, damage, or failure. The dual-channel version contains two independent
transmitter and receiver units in one compact package, and is ideal for continuously
monitoring the optical status of two separate fiber loops. Plug-and-play design ensures
ease of operation, and no optical or electrical adjustments are ever required.

1 OR 2

FEATURES

› One or two fiber loop units available

› Instantaneously reports optical fiber breakage or damage

locally or remotely

› Dry relay contacts may be configured for NO or NC operation

› Automatic resettable solid state current limiters for

unconditional modem protection

› Voltage transient protection on all power and signal input/

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

› Ambient operating temperature range: -40˚ C to +75˚ C for

deployment in virtually any unconditioned out-of-plant or
roadside environment

› Bi-color (Red/Green) status indicating LEDs provide rapid

indication of critical operating parameters

› Hot-swappable rack modules

› Interchangeable between stand-alone or rack mount use –

ComFit

› May be DIN-rail mounted by the addition of ComNet DIN-Rail

adaptor plate (Model DINBKT1 or DINBKT4, sold separately)

› Lifetime warranty

APPLICATIONS

› Fencing and Perimeter Surveillance: Optical fiber woven into

fencing or other structures

› Solar Panel/Photovoltaic Array (PVA) Theft Protection

› Protection of High-Value Assets and Facilities

› Continuous Status/Continuity Monitoring of Mission-Critical

Fiber Optic Trunk Cables

LIFETIME WARRANTY WWW.COMNET.NET TECH SUPPORT: 1.888.678.9427

FDC1 / FDC2

SPECIFICATIONS

Fiber Optic Cable Breakage Monitor/Detector

Contacts

Contact Interface Response Time: 0.5 msec
Output Relay, 30VDC @ 0.5 A Contact Rating

Connectors

Power Terminal Block
Optical LC or SC (SFP dependent)
Ethernet RJ45
Contact Closure Terminal Block

1

Wavelength 1300 nm, Multimode or Single Mode

Number of Fibers 1 per loop

Connectors

Optical ST
Contact and Power Terminal Block

Electrical & Mechanical

Number of Rack Slots 1
Current Protection Automatic Resettable
Solid-State Current Limiters
Circuit Board Meets IPC Standard
Size 6.1 × 5.3 × 1.1 in (15.5 × 13.5 × 2.8 cm)
Shipping Weight <2 lb./0.9 kg

Environmental

MTBF >100,000 hours
Operating Temp -40˚ C to +75˚ C
Storage Temp -40˚ C to +85˚ C
Relative Humidity 0% to 95% (non-condensing)¹

Indicating LEDs Fiber Continuity, each channel

Power

Operating Voltage Range 8 to 27 VDC
Power Consumption 1W
Rack From Rack Power Supply

ORDERING INFORMATION

Fibers

Part Number Description

FDC 1M Single Channel Fiber Break Detector 1 per loop Multimode 62.5/125µm 12 dB 12 km (7.5 mi) 1

FDC2M Dual Channel Fiber Break Detector 2, 1 per loop Multimode 62.5/125µm 12 dB 12 km (7.5 mi) 1

FDC 1S Single Channel Fiber Break Detector 1 per loop Single Mode 9/125µm 12 dB 36 km (22.4 mi) 1

FDC2S Dual Channel Fiber Break Detector 2, 1 per loop Single Mode 9/125µm 12 dB 36 km (22.4 mi) 1

Accessories
Options

[2] Optical transmission distance is limited to optical loss of the fiber and any additional loss introduced by connectors, splices and patch panels.

Distance can also be limited by fiber bandwidth.

Complies with FDA Performance Standard for Laser Products, Title 21, Code of Federal Regulations, Subchapter J

In a continuing effort to improve and advance technology, product specifications are subject to change without notice.

DC Plug-in Power Supply, 90-264 VAC, 50/60 Hz (Included)
[1] Add suffix ‘/C’ for Conformally Coated Circuit Boards to extend to condensation conditions (Extra charge, consult factory)
DIN-Rail Mounting Adaptor Plate Kit – With mounting hardware (Optional, order model DINBKT1 or DINBK T4)

Required Fiber

Optical PWR
Budget

Maximum
Distance²

# Rack
Slots

TYPICAL APPLICATION

TX

|

|

USA

C

C

T: 203.796.5300

|

T: [phone]

|

F: 203.796.5303

OPTICAL FIBER

|

|

FDC1

1 Fiber

Fiber Loop 2

Fiber Loop 1

3 CORPORATE DRIVE

8 TURNBERRY PARK ROAD

© 2014 Communic ation Netwo rks. All Righ ts Reserv ed. “ComNet ” and the “ComNe t Logo” are regi stered tra demarks of Com munication Ne tworks.

RX

TX
TX

FDC2

RX

RX

|

DANBURY, CONNECTICUT 06810

|

GILDERSOME

|

MORLEY

2

|

LEEDS, UK LS27 7LE

TECH SUPPORT: 1.888.678.9427

F: [phone]

|

[e-mail]

|

[e-mail]