Connecting the e1/t1 interface, Connecting the power, Below) – RAD Data comm T1 User Manual
Page 25
FOM-E1/T1 Installation and Operation Manual
Chapter 2 Installation and Setup
Installation and Setup
2-5
2. Connect the transmit fiber to the connector marked TX and the receive fiber to
the connector marked RX.
3. At the remote unit connect the transmit fiber to RX and the receive fiber to TX.
Connecting the E1/T1 Interface
The rear-panel E1/T1 connector provides interface for data input/output, clock
reference and control signal exchange between FOM-E1/T1 and E1/T1 equipment.
Balanced E1/T1 interface terminates in DB-15 female connector, which also serves
as an alarm relay (see
for the connector pinout).
Unbalanced E1 interface terminates in two coaxial BNC connectors, designated as
IN and OUT. IN refers to the FOM-E1/T1 input signal. OUT refers to a signal
transmitted from FOM-E1/T1 to the attached equipment.
RAD offers an optional splitter cable for connecting the DB-15 port to the balanced
E1/T1 equipment and alarm device (refer to
for further details).
The E1 and T1 ports should be connected to SELV (Safety Extra Low Voltage)
links only.
Connecting the Power
To connect the power to FOM-E1/T1, refer to the appropriate section below,
depending on your version of the unit (AC or DC).
Before switching on this unit and connecting or disconnecting any other cable,
the protective earth terminals of this unit must be connected to the protective
ground conductor of the mains power cord. If you are using an extension cord
(power cable) make sure it is grounded as well.
Any interruption of the protective (grounding) conductor (inside or outside the
instrument) or disconnecting of the protective earth terminal can make this
unit dangerous. Intentional interruption is prohibited.
The line fuse is located in an integral-type fuse holder located on the rear
panel. Make sure that only fuses of the required rating, as marked on the rear
panel, are used for replacement. Do not use repaired fuses or short-circuit the
fuse holder. Always disconnect the mains cable before removing or replacing
the fuse. Whenever it is likely that the fuse protection has been damaged,
make the unit inoperative and secure it against unintended operation.
Warning
Warning
Note