RAD Data comm 4-Wire Symmetrical VDSL Modem ASM-60 Manual de usuario descargar pdf (Pagina 5)

132

RAD Data Communications 2009 Catalog

twisted pair. Transmit timing is provided

internally, derived externally from the DTE or

recovered from the receive signal.

The ASM-10/8 features diagnostic capabilities

complying with the V.54 standard to perform

local and remote loopbacks.

The unit has a V.24/RS-232 interface and is

available as a standalone unit or as a card for

the 19-inch ASM-MN-214 rack that holds up to

14 cards (see page 144).

Approximate Range for 24 AWG (0.5 mm)

Data Rate

(kbps) km miles

19.2 10.0 6.0

9.6 13.0 8.0

4.8 16.0 10.0

2.4 21.0 13.1

1.2 28.0 17.5

ASM-10/8

Sync/Async Short Range Modem

ASM-10/8

V.24

Sync/async

computer

Terminal

or PC

ASM-10/8

V.24

4-wire

19.2 kbps

•

Full or half duplex over 4-wire

•

Data rates up to 19.2 kbps

•

Range up to 10 km (6.2 miles) at

19.2 kbps

•

Controlled or continuous carrier

•

V.54 diagnostics

•

Automatic equalizer

The ASM-10/8 is a sync/async short range modem

operating full or half duplex over twisted pair,

unconditioned lines in point-to-point applications.

It has a range of up to 10 km (6.2 miles) and

operates at nine selectable rates up to 19.2 kbps.

The modem uses conditional diphase modulation

(EUROCOM Std. D1), which provides immunity to

background noise, eliminates normal line

distortion and enables efficient transmission over

For latest updates visit www.rad.com

•

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

FOMi-E1/T1

E1/T1 Fiber Optic Modem with Remote Control

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. A card version of the

FOMi-E1/T1 is available for the LRS-24 19-inch

rack with central SNMP management. A double

modem card is also available for the LRS-24,

which supports up to 24 modems in a 4U/6U-

high chassis.

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.

FOMi-E1/T1

PBX

FOMi-E1/T1C card

E1/T1

Fiber optic

100 km

(62 miles)

LRS-24

SNMP

management

station

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.

Extends the range of equipment with

For latest updates visit www.rad.com

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