RFL Electronics T1/E1 FSU Series Installation and user guide

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL Electronics Inc.
I N S T R U C T I O N D A T A
RFL T1/E1 Fiber Service Unit
107600-200
107600-300
107600-400
107600-500
RFL Electronics Inc. Boonton, New Jersey USA
RFL T1/E1FSU 107600-200
E1 TX T1/E1 TX/RX E1 RX PWR
FO RX FO TX
FO
T1/E1
Figure 1. Typical RFL T1/E1Fiber Service Unit, Front Panel view
DESCRIPTION
The RFL T1/E1 Fiber Service Unit (FSU) is an AC/DC powered, environmentally hardened T1/E1
Fiber Service Unit. This device can be electrically interfaced to a SONET or SHD multiplexer and can
extend the communication signal over fiber to a T1 or E1 IMUX 2000 multiplexer. When connecting
two FSUs end to end, an interface can be provided between any T1 or E1 multiplexer with compliant
T1 or E1 electrical interfaces. The characteristics of each type of Fiber Service Unit is shown in Table
1. Mounting dimensions are shown in Figure 7.
RFL T1/E1 FSU RFL Electronics Inc.
August 1, 2009 1 [phone]

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
Table 1. T1/E1 Fiber Service Unit Characteristics
Assy.
Number Type Wavelength/
Mode
Connector
Type
Receiver
Sensitivity
(average)
TX Power
(average) System
Gain Typical Distance
107600-200 LED
Emitter/Detector 1300nm/ singlemode ST -37 dBm -19 dBm 18 dB
12 mi (19 km)
107600-300 LED
Emitter/Detector 1300nm/ multimode ST -39 dBm -13 dBm 26 dB 21 mi (34 km)
107600-400 Laser
Emitter/Detector 1300 nm/ singlemode ST -37 dBm 0 dBm 37 dB 34 mi (55 km)
107600-500 Laser
Emitter/Detector 1550nm/ singlemode ST -37 dBm -3 dBm 34 dB 58 mi (93 km)
WARNING
YOUR T1/E1 FIBER SERVICE UNIT IS EQUIPPED WITH FIBER INPUT/OUTPUT
MODULES THAT HAVE FIBER OPTIC EMITTER HEADS. FIBER OPTIC
EMITTER HEADS USE A LASER LIGHT SOURCE THAT PRODUCE INVISIBLE
RADIATION. FIBER OPTIC COMMUNICATION SYSTEMS ARE INHERENTLY
SAFE IN NORMAL OPERATION BECAUSE ALL RADIATION IS CONTAINED IN
THE SYSTEM. IT IS POSSIBLE DURING MAINTENANCE TO EXPOSE THE
RADIATION BY REMOVING OR BREAKING THE FIBER. STARING DIRECTLY
INTO THE LIGHT BEAM MAY RESULT IN PERMANENT EYE DAMAGE
AND/OR BLINDNESS. NEVER LOOK DIRECTLY INTO THE LIGHT BEAM AND
BE CAREFUL NOT TO SHINE THE LIGHT AGAINST ANY REFLECTIVE
SURFACE.
THE LASER SOURCE IS A CLASS I LASER PRODUCT WHICH COMPLIES
WITH APPLICABLE FDA, OSHA AND ANSI STANDARDS.
RFL T1/E1 FSU RFL Electronics Inc.
August 1, 2009 2 [phone]

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL T1/E1 FSU RFL Electronics Inc.
August 1, 2009 3 [phone]
SPECIFICATIONS
As of the date this Instruction Data Sheet was published, the following specifications apply to the RFL
T1/E1 Fiber Service Unit. Because all RFL products undergo constant refinement and improvement,
these specifications are subject to change without notice.
Fiber Optic Cable Type: 50μm or 62.5μm core diameter optical fiber.
Fiber Optic Cable Length: 93 km max (depending on assembly number)
Fiber Optic Connector: Type ST
Wavelength: 1300nm or 1500nm
Mode: singlemode or multimode
Signal Connector Type:
15-pin male type D subminiature for T1 or E1, or dual BNCs for E1
Data Rate:
T1: 1.544 Mb/sec
E1: 2.048 Mb/sec
Input Power Connector:
6-position Terminal Block
RFL Part # 101458-6
Amphenol PCD ELFF06240
Input Power Requirements:
38 to 150 Vdc or 96 to 132 VAC @ 6W
Operating Temperature:
-20OC to +60OC (-22OF to +140OF)
Relative Humidity: 95 percent @ 40oC, non-condensing.
Dimensions:
Width: 5.13 inches (13 cm)
Height: 1.77 inches (4.5 cm)
Depth: 11.14 inches (28.3 cm)
Mounting Dimensions: In accordance with Figure 7.

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
INSTALLATION
Installation involves mounting the FSU module in its desired location, connecting all signal,
coaxial and power cables, and programming the module configuration settings, using jumpers and
switch settings as required.
To install the module, proceed as follows:
1. Carefully inspect the module for any signs of shipping damage. If you suspect damage to
the module, immediately call RFL Customer Service at the number given at the bottom of
this page.
2. Check the assembly number on the front panel of the module to make sure the unit is
compatible with your interface requirement as shown in Table 1.
3. Use Table 6 as a wiring guide for the D subminiature connector if your interface is 120
ohm E1. Use Table 7 as a wiring guide for the BNC connectors if your interface is 75 ohm
T1 or E1. When fastening the D subminiature connector, make sure that the screws on both
ends of the mating connector are tightened to secure the connector to the FSU front panel.
NOTE
ALL CABLING TO AND FROM THE FIBER SERVICE UNIT INTERFACE
CONNECTOR MUST UTILIZE SHIELDED TWISTED PAIR OR COAXIAL CABLE
TO MINIMIZE CROSSTALK AND INTERFERENCE FROM EXTERNAL SOURCES.
CAUTION
BEFORE ATTEMPTING TO MAKE POWER CONNECTIONS TO THE FIBER
SERVICE UNIT, MAKE SURE THAT YOUR POWER SOURCE IS COMPATIBLE
WITH THE FSU. IF THE IMPROPER VOLTAGE IS CONNECTED TO THE FSU,
COMPONENT DAMAGE MAY RESULT.
4. Fiber optic cables with type ST series bayonet fiber optic connectors must be connected to the
fiber optic heads on the front panel of the FSU module and to the far end chassis. When
connecting fiber optic cables, make sure the connectors are properly aligned before tightening,
and then fully tighten them. This will help minimize losses in the connector.
5. Set switches SW1-1 and SW1-2 to select the Loopback mode in accordance with Table 3.
6. Set switches SW1-3 and SW1-4 to select the Receive Termination in accordance with Table 3.
7. Set switch SW1-5 to select the Receive Sensitivity in accordance with Table 3. Note that the
settings are different for T1 and E1 systems.
RFL T1/E1 FSU RFL Electronics Inc.
August 1, 2009 4 [phone]

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
8. Set switches SW1-6, SW1-7 and SW1-8 to select the Line Buildout in accordance with Table 3.
Note that the settings are different for T1 and E1 systems. Also note that settings are required
for Jumpers J6 and J7.
9. Set switches SW1-9 and SW1-10 to select the Transmit Data Source in accordance with Table 3.
10. Set switch SW2-1 to select the Electrical Phase Locked Loop for T1 or E1 in accordance with
Table 4.
11. Set switch SW2-2 to select the Fiber Optic Phase Locked Loop for T1 or E1 in accordance with
Table 4.
12. Set switch SW2-3 to select the Transceiver for T1 or E1 in accordance with Table 4.
13. Set switch SW2-4 to enable or disable HDB3/B8ZS in accordance with Table 4.
14. Set switch SW2-5 to enable or disable the Internal Timing in accordance with Table 4.
15. Set switch SW2-6 to enable or disable the Jitter Attenuator in accordance with Table 4.
16. Set switch SW2-7 to select whether the Jitter Attenuator is in the Tx path or Rx path.
17. Remove the Terminal Block connector from the FSU rear panel. Connect input power to the
following terminals on the terminal block connector as follows:
Station battery positive TB1-1
Station battery negative TB1-2
Ground Ground Stud on rear panel
18. Connect to Alarm Contacts as follows:
TB1-4 NC
TB1-5 NO
TB1-6 COM
19. Plug the Terminal Block into the FSU rear panel TB1 connector. The FSU is now installed
and powered up. The FSU has no power ON/OFF switch. It is powered up as soon as
power is connected. For more information consult the Instruction Manual for the RFL
IMUX 2000 or the other T1/E1 compliant device as applicable.
WARNING
RFL T1/E1 FSU RFL Electronics Inc.
August 1, 2009 5 [phone]
INSURE THAT ALL FIBER OPTIC CABLES ARE CONNECTED BEFORE
POWERING-UP THE FSU

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
CONTROLS AND INDICATORS
The RFL TX/RX FSU has user controls and indicators as shown in Figure 2. The figure shows the
location of all controls, indicators and connectors on the front, rear and side panels of the FSU module.
Figures 3 and 4 show the location of controls and indicators on Board A and Board B. The function of
all controls and indicators are described in Tables 2 through 5, and Table 9.
UP
DOWN
c. Side Panel
11 12
b. Rear Panel C NO NC - +
a. Front Panel
RFL Electronics Inc. Boonton, New Jersey USA
RFL T1/E1FSU 107600-200
E1 TX T1/E1 TX/RX E1 RX PWR
FO RX FO TX
FO
T1/E1
1 2 4
10 5 7 8 6
3
9
TB1-6 TB1-1
15 9
8 1
SW1-1 SW1-10 SW2-1 SW2-10
Figure 2. Fiber Service Unit, front, rear, and side panel controls and indicators
RFL T1/E1 FSU RFL Electronics Inc.
August 1, 2009 6 [phone]

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL T1/E1 FSU RFL Electronics Inc.
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Table 2. T1/E1 FSU Controls and Indicators
Item
Number Reference Designation Description Function
1 DS1 FO LED Fiber Optic status indicator.
Lights “green” when fiber optic data is being received.
2 DS2 T1/E1 LED T1/E1 status indicator.
Lights “green” when electrical data is being received..
3 DS3 Power LED Power status indicator.
Lights “green” when power is applied to the input power terminals.
4 J5 T1/E1 Tx/Rx Port 120 Ohm, DB-15 male T1/E1 Tx/Rx connector
5 J1 E1 Tx Port 75 Ohm E1 Tx connector (BNC)
6 J2 E1 Rx Port 75 Ohm E1 Rx connector (BNC)
7 CR1 Fiber Optic Detector Fiber optic detector with type ST connector
8 CR2 Fiber Optic Emitter Fiber optic emitter with type ST connector
9 TB1 Terminal Block Provides input power and alarm relay output connections
10 --- Ground Stud Earth ground connection
11 SW1 10-pole DIP switch Used to set operating parameters in accordance with Table 3
12 SW2 10-pole DIP switch Used to set operating parameters in accordance with Table 4
ALARM RELAY
The normally open (NO) contacts will close and the normally closed (NC) contacts will open if the
T1/E1 FSU goes into an alarm condition. An alarm condition occurs if the FSU fails to receive
electrical data, fails to receive optical data, or if power is disconnected from the FSU.
ENCODING PRECAUTIONS
The T1/E1 FSU optical interface supports CMI encoding only. The T1/E1 FSU optical interface does
not support HDB3 or B8ZS encoding. SW2-4 selects the encoding of the electrical interface only.
To be compatible with the T1/E1 FSU, a CM3 or CM3R using an OIA must be set to AMI, and the
OIA must be set to CMI. For this reason, when interfacing a T1/E1 FSU to a CM3 or CM3R via an
OIA, the CM3/CM3R will lose sync if it receives greater than 22 consecutive timeslots of all zeros.
See Table 8 and 10 for provisioning compatibility for various OIA models.
When interfacing the T1/E1 Fiber Service Unit (RFL part numbers 107600-200 thru 107600-500) to a
Fiber Optic port on an 8-Port DACS, the Line Coding of the 8-Port DACS must be set to AMI.

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL T1/E1 FSU RFL Electronics Inc.
August 1, 2009 8 [phone]
Table 3. SW1 Switch Positions
Switch Function
SW1 SW1-1 and SW1-2 Loopback Select
SW1-1 SW1-2 Mode
Down Down No Loopback (factory setting)
Up Up T1/E1 Loopback (data entering the electrical interface is looped back)
Up Down Fiber Optic Loopback (data entering the fiber optic interface is looped back)
SW1-3 and SW1-4 Receive Termination
SW1-3 SW1-4 Termination
Up Up 75 Ohms
Down Up 100 Ohms
Up Down 120 Ohms
SW1-5 T1/E1 Receive Sensitivity
SW1-5 T1 Receive Sensitivity
Up -30 dB (limited long haul)
Down -36 dB (long haul)
SW1-5 E1 Receive Sensitivity
Up -43 dB (long haul)
Down -12 dB (short haul)
SW1-6, SW1-7 and SW1-8 T1 Line Buildout Select
SW1-6 SW1-7 SW1-8 Jumper J6* Jumper J7* T1 Line Buildout
Down Down Down A A 0-133 feet
Up Down Down A A 133-266 feet
Down Up Down A A 266-399 feet
Up Up Down A A 399-533 feet
Down Down Up A A 533-655 feet
Up Down Up A A -7.5 dB
Down Up Up A A -15 dB
Up Up Up A A -22.5 dB
SW1-6, SW1-7 and SW1-8 E1 Line Buildout Select
SW1-6 SW1-7 SW1-8 Jumper J6* Jumper J7* E1 Line Buildout
Down Down Down A A 75 Ohm normal
Up Down Down A A 120 Ohm normal
Down Down Up B B 75 Ohm w/high return loss
Up Down Up C C 120 Ohm w/high return loss
SW1-9 and SW1-10 Transmit Data Source
SW1-9 SW1-10 Transmit Data
Down Down Received Fiber Data (factory setting)
Up Up All Ones Pattern
Down Up Alternating Ones and Zeroes
*See Figure 3 for jumper locations

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL T1/E1 FSU RFL Electronics Inc.
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Table 4. SW2 Switch Positions
Switch Function
SW2 SW2-1 Electrical T1/E1 PLL Select
SW2-1 Mode*
Up T1
Down E1
SW2-2 Fiber Optic T1/E1 PLL Select
SW2-2 Mode*
Up T1
Down E1
SW2-3 Transceiver T1/E1 Select
SW2-3 Mode*
Up T1
Down E1
SW2-4 AMI or B8ZS/HDB3 Select (electrical interface only)
SW2-4
Up AMI
Down B8ZS/HDB3
SW2-5 Internal Timing Enable
SW2-5
Up disable
Down enable
SW2-6 Jitter Attenuator Enable (electrical interface only)
SW2-6
Up disable
Down enable
SW2-7 Jitter Attenuator Select
SW2-7
Up Tx Path
Down Rx Path
SW2-8 Not Used
SW2-9 Not Used
SW2-10 Not Used
* Switches SW2-1, SW2-2 and SW2-3 must all be in either the T1 position or the E1 position.

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
DS1
DS2
J1
J3
SW1
SW2
F2
TB1
DS3
J2
J4
J5
J7
J6
P1
F1
G U G U
A B C A B C
Figure 3. Controls and indicators, T1/E1 Fiber Converter board (Board A)
RFL T1/E1 FSU RFL Electronics Inc.
August 1, 2009 10 [phone]