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FIM-108
MATRIX FIBER INTERFACE
INSTRUCTION MANUAL
Page 2
FIM-108 Matrix Fiber Interface Instruction Manual
2003 Clear-Com Intercom Systems
All Rights Reserved
Part Number 810291 Rev. A
Clear-Com Intercom Systems
4065 Hollis Street
Emeryville, CA 94608-3505
U.S.A
Clear-Com is a registered trademark of Clear-Com Intercom Systems.
The Clear-Com Logo is a registered trademark of Clear-Com Intercom Systems.
Page 3
CONTENTS
OPERATION 1-1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Connecting Intercom Stations to the Central Matrix. . . . . . . . . . . . . . . . . 1-2
Connecting Interface Modules to the Central Matrix . . . . . . . . . . . . . . . . 1-3
One-Fiber and Two-Fiber Configurations . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
FIM-108D Two-Fiber Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
FIM-108M and FIM-108S One-Fiber Configurations . . . . . . . . . . . . . 1-4
FIM-108 Front Panel Controls and Lights. . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Power On/Off Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Link Status Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Power Status Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
FIM-108 Rear Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Audio and Data Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Optical Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Coaxial Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Power Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Powering an FIM-108 Unit On or Off . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
INSTALLATION 2-1
Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installing an FIM-108 Unit in a Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Installing Fiber-Optic Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Connecting Fiber-Optic Cable to the FIM-108. . . . . . . . . . . . . . . . . . . . . . . 2-3
Connecting Audio/Data Cables to the FIM-108 . . . . . . . . . . . . . . . . . . . . . . 2-3
Cat-5 Cable Pinout Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Connecting Coaxial Cable to the FIM-108 . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
FIM-108 FIBER INTERFACE
MAINTENANCE 3-1
Troubleshooting Tips. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Block Diagram of a One-Fiber System (FIM-108M or FIM-108S) . . . . . . . . 3-1
Component Layout Drawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
GLOSSARY 4-1
SPECIFICATIONS 5-1
CLEAR-COM LIMITED WARRANTY 6-1
Factory Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Warranty Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Non-Warranty Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
i
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1
The Clear-Com FIM-108
System links up to eight
intercom stations to the
central matrix frame over
fiber optic or coaxial cable.
With fiber-optic cable, you
can place the stations at
distances of up to 12 miles
(20 km) from the central
frame.
OPERATION
DESCRIPTION
With a Clear-Com FIM-108 System, you can connect Clear-Com intercom
stations or interfaces to the central matrix using fiber-optic cables at distances of
up to 12 miles (20 km). For added convenience, Clear-Com also provides BNC
connectors, so that you can connect FIM-108 units with coaxial cables at
distances of up to 1,000 feet (300 meters).
The system consists of one FIM-108 unit at the matrix-frame end and another
FIM-108 unit at the matrix-station end. Connecting the pair of interfaces with
fiber or coaxial cable, rather than with the standard 4-wire twisted copper, gives
you advantages such as increased security from electromagnetic and RF
interference, flexibility in equipment placement, ease of maintenance, and often,
reduced cost.
Clear-Com provides three versions of of the FIM-108 interface:
•An FIM-108D interface pair connects over two single-mode fiber-optic cables
—one cable for each direction of the signal flow. You also have the option of
connecting the units with two coaxial cables, again one cable for each direction
of the signal flow.
•An FIM-108M interface pair connects over one multimode fiber-optic cable.
The send and receive signals are combined using wave-dimension multiplexing
(WDM) so that both directions of the signal flow can transmit over one
fiber-optic cable. You also have the option of connecting the units with two
coaxial cables, one cable for each direction of the signal flow.
FIM-108 FIBER INTERFACE
•An FIM-108S interface pair connects over one single-mode fiber-optic cable.
Like the FIM-108M unit, the FIM-108S unit combines the send and receive
signals through wave-dimension multiplexing (WDM), so that both directions
of the signal flow can transmit on one fiber-optic cable. As with the other
versions, you can optionally connect the units with coaxial cable.
INTERFACE # FIBERS FIBER MODE FIBER RANGE
FIM-108D
FIM-108M
FIM-108S
Table 1: Summary of FIM-108 Fiber-Optic Connection Options
NOTE: Throughout this manual the interface will be referred to generally as the
“FIM-108 interface.” The D, M, and S designations will only be used when it is
necessary to distingish between the three versions of the interface. When you see the
term “FIM-108 interface,” you can assume that the text refers generally to all versions.
2single mode
or multimode
1 multimode 3 miles (5 km)
1 single mode 12 miles (20) km
3 miles or 5 km (multimode)
12 miles or 20 km (single mode)
1-1
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CONNECTING INTERCOM STATIONS TO THE CENTRAL MATRIX
The Clear-Com FIM-108 system transmits audio and data signals from up to eight intercom units to the matrix frame
through the process illustrated in Figure 2. For the purposes of simplification, the illustration shows only one direction
of the signal flow, while in reality the opposite direction of signal flow occurs in a a similar fashion and simultaneously,
so that the system always transmits in full-duplex mode.
First FIM-108 unit converts intercom audio signals to digital ...
Intercom stations transmit
1
analog-audio and digital-data signals
over copper cable to the first FIM-108 unit.
2
then multiplexes digital-audio and digital-data signals into one digital signal ...
3
then converts multiplexed digital signal into an optical signal.
4
Fiber-optic cable transmits optical signal
5
up to 12 miles (20 km)
FIM-108
Second FIM-108 unit converts received optical signal to digital signal ...
6
then demultiplexes (separates) the digital signal into the
7
separate audio and data signals for each intercom unit ...
8
then converts the digital-audio signals to analog-audio signals ...
9
and then transmits the analog-audio and digital-data signals
for each intercom station over copper cable to the central matrix.
FIM-108
Figure 1: Connecting Intercom Stations to the Central Matrix
10
The central matrix receives the intercom
stations' audio and data signals exactly
as they were originally sent.
1
Matrix Plus intercom stations transmit analog audio signals and digital data signals to the first FIM-108 unit via
copper cable terminated with RJ-45 connectors.
2
The first FIM-108 unit converts the analog audio signals to digital audio signals through an analog-to-digital
converter (ADC) located on the FIM-108 unit’s main circuit board.
The first FIM-108 unit then multiplexes (combines) the digital audio signals with the already digital data signals.
3
The first FIM-108 unit then converts the multiplexed digital signal into an optical signal.
4
5
The first FIM-108 unit then transmits the optical signal over up to 12 miles (20 km) of fiber-optic cable (or
1,000 ft. of coaxial cable) to the second FIM-108 unit, where a similar but reverse process occurs to convert the
signal back to its original format.
The second FIM-108 unit converts the received optical signal to a digital signal.
6
The second FIM-108 unit then “demultiplexes” (separates) the digital signal back into its separate audio and data
7
signals for each intercom unit.
The second FIM-108 unit then converts the digital audio signals for each intercom station to analog audio signals
8
by sending the signals through a digital-to-analog converter (DAC) located on the FIM-108 unit’s main circuit
board.
9
The second FIM-108 unit then transmits the analog audio and digital data signals for each intercom station to
the central matrix over copper cable terminated with RJ-45 connectors.
The central matrix receives the intercom stations’ audio and data signals in the same format in which they were
10
originally sent by the Matrix Plus 3 intercom stations.
1-2
FIM-108 FIBER INTERFACE
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NOTE: There is a one-to-one correspondence between inputs and outputs at opposite
ends of the system. Audio inputs and outputs are on separate sets of eight RJ-45
connectors located on the rear panel of each IMS-108 unit. See “Rear Panel
Connectors” later in this chapter for more information.
Table 1 lists the main circuits on the FIM-108’s circuit board.
CIRCUIT DESCRIPTION
WARNIN G: Always
use extreme caution with
fiber-optic equipment. Never
look directly into the light
port or into the end of the
optical fiber while either
FIM-108 unit is operating.
Even if you do not see visible
light, eye damage is
possible.
Analog-to-Digital
(A/D) Converters
High speed analog-to-digital converters for each
audio channel.
Multiplexer Sequentially presents eight RS-422 digital inputs and
eight digitized audio signals from the A/D converters
to the optical output driver.
Demultiplexer Takes sequential digital signals from the pin diode
and separates them into 20 separate lines: eight to
the D/A converters, eight to the RS-422 transmitters
and four for overhead.
Digital-to-Analog
(D/A) Converters
High speed digital-to-analog converters for each
audio channel convert the digitized audio signal back
to analog audio.
Table 2: Circuits in the FIM-108 System
CONNECTING INTERFACE MODULES TO THE CENTRAL MATRIX
With a pair of FIM-108 units you can also remotely connect Clear-Com
interface modules to the central matrix. For example, using a Clear-Com CCI-22
dual party-line interface at one end, you can connect two independent, external
2-wire party line systems to the central matrix from a distance of up to 12 miles
(20 km). Or, with a Clear-Com TEL-14 Telephone Interface Module, you can
send telephone audio to the central matrix over a secured, interference-free fiber
optic line.
CCI-22 Interface
Connects two 2-wire
party-line circuits
TEL-14 Interface
Connects 2 telephone lines
EFI-M Interface
Connects 2-wire
party-line to matrix
or other 4-wire devices
FIM-108 FIBER INTERFACE
Figure 2 shows a system with connected interface modules.
FIM-108
FIM-108
Figure 2: Connecting Interface Modules to the Central Matrix
1-3
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ONE-FIBER AND TWO-FIBER CONFIGURATIONS
FIM-108D Two-Fiber Configuration
In a standard two-fiber system, identical FIM-108D units are used at each
location. The units both transmit at 300 nm on ST connector A and receive the
300 nm signal on ST connector B. They are connected by the two fibers so that
the optical output of each box is connected to the optical input of the other. In
both one- and two-fiber systems, the input of channel 1 on one unit becomes the
ouput of channel 1 on the other unit, and vice versa.
The two FIM-108 units in the two-fiber version are identical, so the units are
interchangeable.
FIM-108M and FIM-108S One-Fiber Configurations
In a one-fiber system, the two FIM-108 units are not identical and are configured
before shipment. They must be used as a pair. The units are connected by a single
fiber that is wavelength division multiplexed (WDM). One unit transmits from
the “A” ST connector at a wavelength of 1300 nm and also receives at 1550 nm
on the same connector. The other unit transmits from the “A” ST connector at
1550 nm and similarly receives at 1300 nm on the same connector.
The two FIM-108 units in the one-fiber versions are not identical, so if a
replacement unit is needed, the unit type must be specified.
Figure 4 illustrates the three configurations of the Clear-Com FIM-108 System.
FIM-108D TWO-FIBER SYSTEM
TX 1300 nm
Unit A Unit B
RX 1300 nm
1300 nm
1300 nm
RX 1300 nm
TX 1300 nm
FIM-108M ONE-FIBER SYSTEM (MULTIMODE)
TX 1300 nm
Unit A
RX 1550 nm
1300 nm
1550 nm
RX 1300 nm
Unit B
TX 1550 nm
FIM-108S ONE-FIBER SYSTEM (SINGLE MODE)
TX 1300 nm
Unit A
RX 1550 nm
1300 nm
1550 nm
Figure 3: Possible Optical Configurations
RX 1300 nm
Unit B
TX 1550 nm
1-4
FIM-108 FIBER INTERFACE
Page 8
1
Power On/Off Switch
Link Status Light
2
Power Status Light
3
FIM-108 FRONT PANEL CONTROLS AND LIGHTS
Figure 4: Front Panel of an FIM-108 Unit
1
Power On/Off Switch
The power on/off switch locks to prevent inadvertent power turn off. To unlock
the switch, pull it towards you until the lock disengages. Do not try to move the
switch without first unlocking it.
2
Link Status Light
The link status light illuminates only when the fiber-optic link is not properly
attached, or when the the system units are not communicating properly. This
light is meaningful only if the green power light is on.
Power Status Light
3
The power status light illuminates when an external power supply of between 12
and 24 VDC is connected.
FIM-108 FIBER INTERFACE
1-5
Page 9
FIM-108 REAR PANEL CONNECTORS
RJ-45 Audio and Data Connectors
1
BNC Coaxial Connectors
Figure 5: Rear Panel of an FIM-108 Unit
1
Audio and Data Connectors
Eight separate pairs of RJ-45 connectors are located on an FIM-108 unit’s rear
panel as shown in Figure 5. Each pair of RJ-45 connectors attaches an audio/data
input and an audio/data ouput to the FIM-108 unit.
2
Optical Connectors
A high-powered LED coupled to an optical fiber generates the FIM-108 unit’s
optical output. A bulkhead-type ST connector on the FIM-108 unit’s rear panel
connects to the transmission fiber. The transmission fiber must be matched to
the fiber pigtail type specified at the time of manufacture.
2
ST-type Optical Connectors
Power Connector
3
4
1-6
The input uses a pin diode and amplifier to convert the optical signal back to an
electrical signal.
The optional single-fiber system uses a wavelength-division multiplexer to
combine and then separate the two colors used.
Coaxial Connectors
3
Each version of the FIM-108 unit has two BNC connectors for connecting two
75-Ohm coaxial cables.
Power Connector
4
A UL- and CE-listed external in-line power supply, with a 3-pin connector,
provides the required 12 VDC to operate an FIM-108 unit.
FIM-108 FIBER INTERFACE
Page 10
POWERING AN FIM-108 UNIT ON OR OFF
With the power off at both units, check all electrical and optical connections as
described in the Installation Chapter of this manual. Firmly seat and latch all
connectors.
To power an FIM-108 unit on or off:
1. Pull the on/off lever towards you to unlock it.
The power lever locks to prevent inadvertent power turn off. When you pull
the lever towards you, the lock disengages. Never move the front-panel lever
without first unlocking it.
2. Move the lever up to turn power on, or down to turn power off.
3. Switch the power on at both FIM-108 units.
The power at both units must be on for the system to function.
4. Verify that the green power light is illuminated on each unit, and that the red
link status light is not illuminated on each unit.
If the lights do not illuminate as described, refer to the troubleshooting
section in the Maintenance Chapter for further instructions.
FIM-108 FIBER INTERFACE
1-7
Page 11
2
INSTALLATION
UNPACKING
When you receive your Clear-Com FIM-108 System, check to make sure you
have received all components of the system. The following items make up a
Clear-Com FIM-108 System:
• Two FIM-108 multiplexer/demultiplexer units
• Two external power supplies
Inspect the units for mechanical damage. Inspect all electrical connectors for bent
or damaged pins and latches. Report any damage to the carrier and to
Clear-Com Intercom Systems.
Leave the protective plastic caps on the optical connectors until it is time to
attach the fiber(s) to the units.
INSTALLING AN FIM-108 UNIT IN A RACK
Clear-Com ships each FIM-108 unit ready for installion in an equipment rack. If
you are not installing the units in a rack, you can remove the rack adapters by
unscrewing the two #10 flat-head screws that hold each adapter in place, as
shown in Figure 1.
FIM-108 FIBER INTERFACE
Figure 1: Installing or Removing the Rack Adapters
Place the FIM-108 units in their intended locations before attaching any wires or
cables. Doing so will prevent accidental damage to the cables or their connectors
during installation.
INSTALLING FIBER-OPTIC CABLE
The person installing the FIM-108 units is responsible for providing the fiber
optic cable runs. Be sure that the fiber core diameters are compatible with the
2-1
Page 12
intended installation distances as shown in Table 1. The factory configures the
FIM-108 units for the required fiber type before shipping.
FIBER CORE DIAMETER MAXIMUM FIBER LENGTH
50 microns (multimode) 3 miles (5 km)
62.5 microns (multimode) 2 miles (3 km)
8 microns (single mode) 12 miles (20 km)
Table 1: Maximum Fiber Lengths
Mark or tag the optical fibers when they are pulled, carefully avoiding the fiber
tip, so that their identity is known at both ends. If there is confusion about the
identity of the two fibers, shine a flashlight at one end of the fiber and look for
light at the other end.
WAR NIN G: Do not use the FIM-108 optical output to identify cables.
Never look directly into the end of the optical fiber while either end of the
system is operating. Even if you do not see visible light, eye damage is possible.
Inspect the fiber ends and clean them with clean, dry compressed air or with
Kim-Wipes that have been saturated with isopropyl alcohol. Fingerprints or
other dirt on the optical connector end surfaces will reduce the received optical
signal level.
2-2
FIM-108 FIBER INTERFACE
Page 13
CONNECTING FIBER-OPTIC CABLE TO THE FIM-108
Figure 2: ST Optical Connectors on an FIM-108 Unit’s Rear Panel
Refer to Figure 2 before connecting the optical fiber to the ST optical connectors
on the FIM-108 unit’s rear panel.
The FIM-108 is compatible with industry standard ST-type connectors.You may
use installed backbone cables or dedicated cables with it.
Always follow the connector manufacturer’s directions when fastening a
connector to the cable.
On a two-fiber system, connect the cables so that:
•transmitter ST A at one end connects to receiver ST B at the other end, and
•transmitter ST B at one end connects to receiver ST A at the other end.
On a one-fiber system, connect the fiber optic cable to the ST A at each end.
Figures 3 and 4 illustrate the entire wiring scheme for the FIM-108 system.
Figure 3 illustrates the wiring for a two-fiber system (FIM-108D) and Figure 4
illustrates the wiring for a single-fiber system (FIM-108M or FIM-108S).
CONNECTING AUDIO/DATA CABLES TO THE FIM-108
RJ-45 connectors on the FIM-108 unit’s rear panel connect the unit to audio and
data inputs and outputs as shown in Figures 3 and 4. Figure 5 illustrates the
CAT-5 and above cable pinout configuration. The maximum length for CAT-5
cables is 10,000 feet (3 km).
FIM-108 FIBER INTERFACE
2-3
Page 14
Clear-Com Matrix Rear Panel
Matrix Port 1
Matrix Port 2
Matrix Port 3
Wire CAT-5 cable from matrix RJ-45 connectors to FIM-108 "matrix" RJ-45 connectors
For the two-fiber version (FIM-108D), wire fiber-optic cable from connectors "A" to "B" and "B" to "A"
A
B
A
B
Wire CAT-5 cable from FIM-108 "station" RJ-45 connectors to
intercom station and interface RJ-45 connectors
i-Station
CCI-22 Interface
TEL-14 Interface
AC - IN
90 - 245 V
CC/TW
Matrix Direct
EFI-M Interface
Intercom
RELAY / GPI
J 5
HMO
MIC
PROG
J 8 J 9
J 10
EXPANSION
LINE
SPKR
OUT
J 7
J 6
Call Via
RS-422
4-Wire
Data
Audio
OUT
J 2
J 3
TO MATRIX
J 1
Figure 3: Wiring a Two-Fiber System (FIM-108D) to Intercom Stations and Interfaces with Fiber-Optic Cable
2-4
FIM-108 FIBER INTERFACE
Page 15
Clear-Com Matrix Rear Panel
Matrix Port 1
Matrix Port 2
Matrix Port 3
Wire CAT-5 cable from matrix RJ-45 connectors to FIM-108 "matrix" RJ-45 connectors
For the one-fiber versions (FIM-108M and FIM-108S), wire fiber-optic cable from connectors "A" to "A"
A
A
Wire CAT-5 cable from FIM-108 "station" RJ-45 connectors to
intercom station and interface RJ-45 connectors
i-Station
CCI-22 Interface
TEL-14 Interface
AC - IN
90 - 245 V
CC/TW
Matrix Direct
EFI-M Interface
Intercom
RELAY / GPI
J 5
HMO
PROG
MIC
J 8 J 9
J 10
EXPANSION
LINE
SPKR
OUT
J 7
J 6
Call Via
RS-422
4-Wire
Data
Audio
OUT
J 2
J 3
TO MATRIX
J 1
Figure 4: Wiring a One-Fiber System (FIM-108M or FIM-108S) to Intercom Stations and Interfaces with Fiber-Optic Cable
FIM-108 FIBER INTERFACE
2-5
Page 16
CAT-5 CABLE PINOUT DIAGRAM
8765
4
RJ-45 Pin Numbers
RS-422 Input +
RS-422 Input –
Audio Input +
Audio Output +
Audio Output –
1
2
3
4
5
3
2
1
Views from
8
4
7
6
5
1
2
3
front of
connectors
ATT-T568B (Cables wired pin-to-pin)
RJ-45 Pin Numbers
Pair 2
Pair 1
Pair 3
RS-422 Output +
1
RS-422 Output –
2
Audio Output +
3
4
Audio Input +
Audio Input –
5
Audio Input –
RS-422 Output +
RS-422 Output –
Audio Output –
6
Pair 4
7
8
6
RS-422 Input +
7
RS-422 Input –
8
Pair 1 Audio output
Pair 2 RS-422 data input
Pair 3 Audio input
Pair 4 RS-422 data output
Figure 5: Cat-5 Cable Pinout Diagram
2-6
FIM-108 FIBER INTERFACE
Page 17
CONNECTING COAXIAL CABLE TO THE FIM-108
Use 75-Ohm coaxial cable to connect to the BNC coaxial connectors. Connect
the cables so that:
• transmitter A at one end connects to receiver B at the other end, and
• transmitter B at one end connects to receiver A at the other end.
Figure 5 illustrates an FIM-108 System wired with coaxial cable.
Clear-Com Matrix Rear Panel
Matrix Port 1
Matrix Port 2
Matrix Port 3
Wire CAT-5 cable from matrix RJ-45 connectors to FIM-108 "matrix" RJ-45 connectors
B
A
CCI-22 Interface
Wire coaxial cable from BNC connectors "A" to "B" and "B" to "A"
Wire CAT-5 cable from FIM-108 "station" RJ-45 connectors to
intercom station and interface RJ-45 connectors
i-Station
TEL-14 Interface
AC - IN
90 - 245 V
CC/TW
Matrix Direct
EFI-M Interface
RELAY / GPI
J 5
Intercom
HMO
MIC
PROG
J 8 J 9
LINE
SPKR
OUT
J 7
J 6
Call Via
RS-422
Data
J 10
4-Wire
Audio
A
B
EXPANSION
OUT
J 2
J 3
TO MATRIX
J 1
FIM-108 FIBER INTERFACE
Figure 6: Wiring the FIM-108 to Intercom Stations and Interfaces with Coaxial Cable
2-7
Page 18
MAINTENANCE
3
TROUBLESHOOTING TIPS
Listed below are some of the more common problems that you may experience, their possible causes, and suggested
solutions.
SYMPTOM POSSIBLE CAUSE
No operation, indicators all off. No power. Make sure the power switches of
both units are on, and their
external supplies are delivering
between 12 to 24 VDC.
No operation, but front-panel
Link Status light is on.
FIM-108 units are operating
correctly, but connected stations
or interfaces are not.
If you are unable to resolve a problem with your FIM-108 unit, call Clear-Com Intercom Systems at (510) 496-6666
and ask for the Service Department. See the Warranty Chapter for more information.
Optical communications failure. Check for broken or
disconnected fibers. Check to see
if the FIM-108 at the other end
is operating correctly. For a
one-fiber system, check the block
diagram on page ???.
Check RJ-45 cables or Matrix
configuration.
PREVENTIVE MAINTENANCE
Every two years verify the adequacy of optical power at the far end of each optical fiber with an optical power meter.
BLOCK DIAGRAM OF A ONE-FIBER SYSTEM (FIM-108M OR FIM-108S)
ST-type Connectors
Audio In (8)
Digital In, RS-422 (8)
Audio Out (8)
Digital Out, RS-422 (8)
850 nm
1300 nm
LED
WDM
DET
1550 nm
1300 nm
Single Optical Fiber
LED
1300 nm
WDM
850 nm
DET
Audio in (8)
Digital in, RS-422 (8)
Audio out (8)
Digital out, RS-422 (8)
FIM-108 FIBER INTERFACE
Unit A
Unit B
Figure 1: Block Diagram for One-Fiber Systems (FIM-108M and FIM-108S)
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COMPONENT LAYOUT DRAWING
Figure 2: Component Layout Drawing of Main Circuit Board
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FIM-108 FIBER INTERFACE
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4
GLOSSARY
fiber-optic cable A fiber-optic cable consists of a glass core covered with a
reflective material called “cladding” and several layers of buffer coating to protect
the cable from the environment. A laser sends light pulses through the glass core
to the other end of the cable.
full duplex Refers to transmission of signals in two directions simultaneously.
interface A piece of electronic hardware designed to convert the 4-wire signals
of a central matrix port to some other form of communications, such as 2-wire
party line, telephone, etc. The interface is connected to a central matrix port.
The external non-4-wire device is then connected to the interface.
mode A term used to describe a light path through a fiber, as in multimode or
single mode.
multimode fiber-optic cable The glass core of a multimode fiber is larger
than the core of a single mode fiber, which causes the transmitted light beam to
disperse as it travels through the core. Single mode fiber, with its smaller core,
concentrates the light beam so that it carries signals further. Multimode fiber was
the first type of fiber offered by manufacturers. Single-mode fiber evolved as
production methods improved.
multiplexing The process by which two or more signals are transmitted over a
single communications channel. Examples include time division and wavelength
division multiplexing.
nanometer (nm) Common unit of measure for wavelength. One billionth of
a meter.
optical signal A laser at one end of a fiber-optic cable pulses on or off to send a
light signal through the glass core of the cable to the other end of the cable.
Because the light signals are binary (on or off), the signal is digital.
port Any of the input/output connections (RJ-45 connectors) on the back panel
of the central matrix. These connectors, and the attached cables, connect the
central matrix to remote intercom devices. The term “port” emphasizes that the
connection is a “portal” between the central matrix and the remote intercom
devices.
remote station Any intelligent intercom device connected to the back-panel
ports of the central matrix. This term does not refer to devices connected
through interfaces.
single-mode fiber-optic cable The glass core of a single-mode fiber is
smaller in diameter than the core of a multimode fiber, so that the light signal
transmitted over the core is more concentrated than with multimode fiber,
which allows the signal to travel further. Single-mode fiber evolved from
multimode fiber as production methods improved.
FIM-108 FIBER INTERFACE
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wavelength-division multiplexing (WDM) A method of multiplexing
optical signals developed for use on fiber-optic cable. Each signal is assigned a
particular wavelength on the light spectrum and therefore many signals can be
transmitted simultaneously without interfering with each other.
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FIM-108 FIBER INTERFACE
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5
SPECIFICATIONS
Audio
Transmission Method Digital, TDM, 18-bit, 48
ksamples/sec
Input Impedance 600 Ohms balanced
Output Impedance 30 Ohms balanced
Maximum Input Level (600 Ohms) +18 dBm (peak)
Maximum Output Level
(from 30 Ohms balanced) +18 dBm into 600 Ohms
Frequency Response (@8 dBm)
from 20 Hz to 20 kHz ±0.2 dB
Tot a l H a r mo ni c D istortion + Noise
from 20 Hz to 20 kHz (@ +8 dBm) <0.05%
at 1 kHz (@ +18 dBm) <0.0085%
Intermodulation Distortion (SMPTE)
60 Hz + 3 kHz mixed 4:1 @ +8 dBm <0.04%
Signal to Noise Ratio, unweighted,
20 Hz - 20 kHz, ref. to +18 dBm clip level >90 dB
Aggregate Digital Data Rate 43 Mbaud
Mechanical/Electrical/Environmental
Connectors RJ-45; coaxial
Optical Connectors ST-type
Power Connector 3-pin DIN
Input Voltage Range 12 to 24 VDC (30 VDC max.)
Power Consumption
(per end, all channels at full level) <12 watts
Temperature Range –40 to 65 C
Humidity Range 0 to 95% non-condensing
A/C Adapters supplied
Electro-Optical System Margin Data
Operating Wavelength 1300 nm 1550 nm
TX output into cable –10 dBm –10 dBm
RX sensitivity –30 dBm –30 dBm
Matrix Data Communications (Frame-to-Station Digital Data)
Transmission Rate RS-422, Balanced TTL Levels, 0 to 150 kBits/sec
Jitter 1.12 msec*
*Higher rates possible dependent upon user system jitter tolerance.
°°
FIM-108 FIBER INTERFACE
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Power Requirements
Voltage 12 to 24 VDC
Caution: Absolute maximum voltage is 30 VDC. Equipment damage may occur at higher
voltages.
Notice about Specifications
While Clear-Com makes every attempt to maintain the accuracy of the information
contained in its product manuals, that information is subject to change without notice.
Performance specifications included in this manual are design-center specifications and are
included for customer guidance and to facilitate system installation. Actual operating
performance may vary.
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FIM-108 FIBER INTERFACE
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6
CLEAR-COM LIMITED WARRANTY
This product is guaranteed by Clear-Com Intercom Systems to be free of
manufacturing defects in material and workmanship under normal use for one
year from the date of purchase.
The Clear-Com Intercom Systems warranty does not cover any defect,
malfunction, or failure caused beyond the control of Clear-Com, including
unreasonable or negligent operation, abuse, accident, failure to follow
instructions in the manual, defective or improperly associated equipment,
attempts at modification and repair not authorized by Clear-Com, and shipping
damage. Products with their serial numbers removed or defaced are not covered
by this warranty.
Return authorization
numbers are required for all
returns.
Both warranty and
non-warranty repairs are
available.
This warranty is the sole and exclusive express warranty given with respect to
Clear-Com products. It is the responsibility of the user to determine before
purchase that this product is suitable for the user's intended purpose.
Any and all implied warranties, including the implied warranty of
merchantability, are limited to the duration of this express limited warranty.
Neither Clear-Com nor the dealer who sells Clear-Com products is liable for
incidental or consequential damages of any kind.
For your own records fill in the information below:
Model No._____________________________Serial No.________________
Date Purchased_________________________________________________
Purchased from (dealer)___________________________________________
Address_______________________________________________________
City______________________________________State____ ZIP_________
FACTORY SERVICE
All equipment returned for repair must be accompanied by documentation
stating the return address, telephone number, date of purchase, and a description
of the problem.
Before returning equipment for repair, you must obtain a return authorization
number. To obtain a return authorization number, call our customer service
department at the number listed below. By talking with our representatives,
many problems can be resolved over the phone. You can also send a fax to our
customer service department or send an email to support@clearcom.com.
FIM-108 FIBER INTERFACE
After obtaining a return authorization number, send equipment to be repaired to:
Customer Service Department
Clear-Com Intercom Systems
4065 Hollis Street
Emeryville, CA 94608-3505
Telephone: (510) 496-6666
Fax: (510)496-6610
Web site: www.clearcom.com
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WARRANTY REPAIR
If in warranty, no charge will be made for the repairs. Equipment returned for
warranty repair must be sent prepaid and will be returned prepaid.
NON-WARRANTY REPAIR
Equipment that is not under warranty must be sent prepaid to Clear-Com. If
requested, an estimate of repair costs will be issued prior to service. Once repair is
approved and repair of equipment is completed, the equipment will be shipped
freight collect from the factory.
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FIM-108 FIBER INTERFACE
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