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 (973) 334-3100
