RAD Data comm FOMi-T1 Manual de usuario descargar pdf (Pagina 13)

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RAD Data Communications 2011 Catalog

FOMi-E1/T1

E1/T1 Fiber Optic Modem with Remote Control

The FOMi-E1/T1 extends the limited range of

the electrical interface of E1 or T1 equipment

over fiber optic links. Range extension is

provided for the following interfaces:

•

100 ohms balanced T1 at 1.544 Mbps

•

120 ohms balanced E1 at 2.048 Mbps

•

75 ohms unbalanced E1 at 2.048 Mbps

The modem is transparent to ITU G.704 framed

signals.

An inband management channel enables

monitoring and control of local and remote

units. The management channel is transmitted

over the same fiber optic link used for data

transfer, with no interference between them.

The FOMi-E1/T1 is available as a standalone unit

with a front panel LCD, or with a blank panel

and a portable control unit (PCU) to prevent

unauthorized operation.

Two BNC coax connectors and an RJ-45 connector

are used for connection to coax or twisted pair

cables. An additional DB-9 connector is used for

external dry contact relay activation in case of

major or minor alarms.

•

Extends the range of equipment with

electrical E1 or T1 interfaces over fiber

•

Inband management of both local and

remote units

•

Supports balanced and unbalanced

interfaces

•

Transparent to framing (ITU G.704)

•

Laser diode option for extended range

For latest updates visit www.rad.com

FIBER MODEMS

•

Extends the range of E1/T1 services

over fiber optic cables up to 144 km

(89.4 miles)

•

Transparent to E1/T1 framing

•

Operates opposite RAD’s DXC cross

connect system, Megaplex access

multiplexers and FCD access units

•

Conforms to all relevant ITU series

standards, including V.54 diagnostics

support

The FOM-E1/T1 fiber optic modem converts an

E1/T1 electrical signal into an optical signal.

After the conversion, the signal is transmitted

over fiber optic cable, extending the E1/T1

service range up to 144 km (89.4 miles).

The FOM-E1/T1 is transparent to E1/T1 framing

(G.704), which enables it to transmit both

framed or unframed E1/T1 signals.

Using the FOM-E1/T1 opposite the DXC cross

connect system, Megaplex access multiplexer or

FCD access unit reduces the cost of the fiber

optic link when accessing the SDH/SONET

network.

The FOM-E1/T1 supports various optical

interfaces:

•

850 nm for multimode fiber

•

1310 nm for single mode or multimode fiber

•

1550 nm laser diode for extended range over

single mode fiber

•

WDM for single fiber extension

FOM-E1/T1 operation complies with ITU G.703,

G.921 and G.956 standards. The modem

supports activation of local and remote

loopbacks in compliance with the ITU V.54

standard.

Front panel LEDs indicate system faults in the

electrical and fiber optic circuits.

FOM-E1/T1

E1/T1 Fiber Optic Modem

Fiber optic

144 km

(89.4 miles)

E1/T1 E1/T1

G.703G.703

Voice/data

mux

Voice/data

mux

FOM-E1/T1 FOM-E1/T1

For latest updates visit www.rad.com

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