INSTALLATION AND OPERATION MANUAL
FDC1 / FDC2
FIBER OPTIC CABLE BREAKAGE MONITOR/DETECTOR
The 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. 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.
The solid-state non-latching relays default to a normally open state in the event of
power loss or loss of optical signal. See Figure 5 on Page 4 for contact settings.
Each module incorporates power and individual status indicating LED’s for
monitoring confirmation of contact closure of each of the eight channels. See
Figures 6 and 7 on Page 4 for an explanation of the LED indicators.
Packaged in the exclusive ComNet ComFit housing, these units may be
either wall or rack-mounted, or may be DIN-rail mounted by the addition of
ComNet model DINBKT1 adaptor plate. See Figure A on Page 5 for mounting
instructions.
See Figures 1 – 7 for complete installation information.
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INSTALLATION AND OPERATION MANUAL FDC1 / FDC2
FIGURE 1 – FDC1 TRANSCEIVER
MULTIMODE OR
SINGLE MODE
OPTICAL FIBER
BLACK
BLACK WITH WHITE STRIPE
Power Supply:
Surface Mount: 8–27 VDC @ 150mA
Rack Mount: From Rack
FIGURE 2 – FDC1 TRANSCEIVER
REAR PANELFRONT PANEL
NOTE: Remove Electrical Connector for Rack Mount Units
TECH SUPPORT: 1.888.678.9427
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INSTALLATION AND OPERATION MANUAL FDC1 / FDC2
FIGURE 3 – FDC2 TRANSCEIVER
MULTIMODE OR
SINGLE MODE
OPTICAL FIBER
BLACK
BLACK WITH WHITE STRIPE
Power Supply:
Surface Mount: 8–27 VDC @ 150mA
Rack Mount: From Rack
FIGURE 4 – FDC2 TRANSCEIVER
REAR PANELFRONT PANEL
NOTE: Remove Electrical Connector for Rack Mount Units
TECH SUPPORT: 1.888.678.9427
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INSTALLATION AND OPERATION MANUAL FDC1 / FDC2
FIGURE 5 – TYPICAL RELAY SETTINGS
Single Channel FDC1 Dual Channel FDC2
Contact
NO = Normally Open*
NC = Normally Closed*
* Note: Power On, cable intact state.
FIGURE 6 – LED INDICATORS (FDC1)
CABLE 1
GREEN
RED
OFF
Fiber Loop Intact
Fiber Loop Broken
Unit powered down
Cable
1 2
FIGURE 7 – LED INDICATORS (FDC2)
CABLE 1 CABLE 2
GREEN
RED
OFF
TECH SUPPORT: 1.888.678.9427
Fiber Loop Intact Fiber Loop Intact
Fiber Loop Broken Fiber Loop Broken
Unit powered down
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MECHANICAL INSTALLATION INSTRUCTIONS
INSTALLATION CONSIDERATIONS
This fiber-optic link is supplied as a Standalone/Rack module. Units
should be installed in dry locations protected from extremes of
temperature and humidity.
STANDALONE: Connect Earth Ground Lead to a nearby Earth Ground.
C1-US, C1-EU, C1-AU OR C1-CH CARD CAGE RACKS
CAUTION: Although the units are hot-swappable and may be installed
without turning power off to the rack, ComNet recommends that
the power supply be turned off and that the rack power supply is
disconnected from any power source.
Note: Remove electrical connector and Earth Ground screw, nuts and
lock washers before installing in card cage rack.
1. Make sure that the card is oriented right side up, and slide it into
the card guides in the rack until the edge connector at the back
of the card seats in the corresponding slot in the rack’s connector
panel. Seating may require thumb pressure on the top and bottom
of the card’s front panel.
CAUTION: Take care not to press on any of the LEDs.
FIGURE A
Dimensions are for a standard ComNet™ one slot module
.156 [3.96 mm]
.313 [7.95 mm]
2. Tighten the two thumb screws on the card until the front panel of
the card is seated against the front of the rack.
WARNING: Unit is to be used with a Listed Class 2 or LPS power supply rated
9-12 VDC @ 1A.
IMPORTANT SAFEGUARDS:
A) Elevated Operating Ambient - If installed in a closed or multi-unit rack
assembly, the operating ambient temperature of the rack environment may
be greater than room ambient. Therefore, consideration should be given to
installing the equipment in an environment compatible with the maximum
ambient temperature (Tma) specified by the manufacturer.
B) Reduced Air Flow - Installation of the equipment in a rack should be such
that the amount of air flow required for safe operation of the equipment is
not compromised.
3 CORPORATE DRIVE | DANBURY, CT 06810 | USA
T: 203.796.5300 | F: 203.796.5303 | TECH SUPPORT: 1.888.678.9427 | INFO@COMNET.NET
8 TURNBERRY PARK ROAD | GILDERSOME | MORLEY | LEEDS, UK LS27 7LE
T: +44 (0)113 307 6400 | F: +44 (0)113 253 7462 | INFO-EUROPE@COMNET.NET
© 2011 Communications Networks Corporation. All Rights Reserved. “ComNet” and the “ComNet Logo” are registered trademarks of Communication Networks, LLC.
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