RAD Data comm 4-Wire Symmetrical VDSL Modem ASM-60 Instrukcja Użytkownika Pobierz pdf (Strona 9)

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RAD Data Communications 2009 Catalog

FOM-40

High Speed Fiber Optic Modem

F I B E R M O D E M S

•

Selectable data rates: 56, 64, 112, 128,

256, 384, 512, 768, 1,024, 1,536, 1,544

and 2,048 kbps

•

Range up to:

– 5 km (3 miles) for 850 nm multimode

– 20 km (12.5 miles) for 1310 nm single

mode

– 50 km (31 miles) for 1310 nm laser

diode

– 100 km (62 miles) for 1550 nm laser

diode

•

V.54 diagnostics and built-in BER tester

•

Digital interfaces: V.24 (up to 64 kbps),

V.35, X.21, RS-530, G.703 codirectional,

Fast Ethernet/Ethernet (bridge)

•

Wide range of selectable data rates –

19.2 kbps up to 256 kbps

•

Synchronous or asynchronous data

transmission

•

Range up to:

– 8 km (5 miles) for 850 nm multimode

– 25 km (15.5 miles) for 1310 nm single

mode

– 60 km (37.5 miles) for 1310 nm laser

diode

– 140 km (87 miles) for 1550 nm laser

diode

•

Digital interfaces: V.24 (up to 64 kbps),

V.35, X.21, RS-530, V.36/RS-449,

Ethernet (bridge), and G.703 codirectional

•

V.54 diagnostics and built-in BER tester

FOM-20

Sync/Async Fiber Optic Modem

The FOM-40 is a high speed, synchronous fiber

optic modem operating full or half duplex over

fiber optic cable. It has selectable data rates

from 56 kbps up to 2.048 Mbps, and a range up

to 100 km (62 miles) using single mode

1550 nm laser diode. The FOM-40 can operate

over single mode or multimode fiber using

850 nm or 1310 nm LEDs, 1310 nm laser diode

or 1550 nm laser diode.

The large variety of interfaces supported by the

FOM-40 facilitates the connection of distant

routers to data services. The Ethernet/Fast

Ethernet bridge modules enable the connection

of remote LANs and VLANs. The FOM-40 extends

these services and connections over fiber optic

cables and performs the hand-off to the SDH/

SONET or IP network.

The FOM-40 features V.54 diagnostics to

perform local analog/digital and remote digital

loopbacks. Loopback commands are controlled

either manually by a front panel switch or via

the DTE interface signals. The front panel switch

generates an internal pseudo-random test

pattern (511) according to the V.52 standard,

for testing end-to-end connectivity.

The FOM-40 is available as a standalone unit or

as a card for the ASM-MN-214 19-inch rack.

The FOM-20 is a sync/async fiber optic modem

operating full or half duplex over fiber optic

cable. It has 16 selectable data rates from

19.2 kbps up to 256 kbps. Four rates are for

asynchronous transmission and 11 rates are for

synchronous transmission (19.2 kbps is for both

sync and async).

The FOM-20 can operate over single mode or

multimode fiber using 850 nm or 1310 nm LEDs

and 1310 nm or 1550 nm laser diodes.

The main application for the FOM-20 is point-to-

point fiber links at ranges longer than any copper

modem can achieve, in noisy environments or

when security is a primary concern.

The FOM-20 features V.54 diagnostics to

perform local analog/digital and remote digital

loopbacks. Loopback commands are controlled

either by a manual switch or via the DTE

interface signals. The FOM-20 includes a built-in

BER tester, which is activated by a front panel

switch and generates a 511 pseudo-random

test pattern according to the V.52 standard.

The FOM-20 is available as a standalone unit or

as a card for the ASM-MN-214 19-inch rack. An

optional kit is available for mounting one or two

standalone units in a 19-inch rack.

Bridge/router

Fiber optic cable

Up to 100 km

(62 miles)

2,048 kbps

V.35

FOM-40

Bridge/router

2,048 kbps

V.35

FOM-40

Fiber optic cable 19.2 kbps

Up to 140 km

(87 miles)

FOM-20FOM-20

Selectable data rates: 56, 64, 112, 128,

For latest updates visit www.rad.com

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