Digicom LCM16P Bedienungsanleitung

BANDBASE 17/02/97

THIS DOCUMENT IS SUBEJCT

TO CHANGE WITHOUT NOTICE

digicomS.p.A.

-ITALY-21010CardanoalCampoVAviaAlessandroVolta39

Tel.+39/331/702611-Fax+39/331/263733-http://www.digicom.it

Telematics

Base Band modem

&Modem

Eliminator...

LCM16P is a complete and reliable base bandmodem to

be used in point to point and multipoint communications on

2 and 4 wires leased lines, in full duplex and half duplex with

fixed and controlled carrier. This modem is suitable for

any telematic environment, for building, campus and

local loop needs.

LCM16P is compatiblewith any base band modem, it can

be used on leased lines which are lent by your public

manager, owner of the lines themselves.

It is easy to programand it is in conformity withITU-T V54

recommandation for diagnosticmanagement and tele-

management, in point to point and multipoint mode.

This product comes from ASIC digicomtechnology used

for DCE1 (completely digital modem for CDN network) and

it is carried out also into version at 64 Kbit for special

connections (LCM16P64) at high speed in local point to

point environment without cascade connections.

Technical Features

lBase band modem with phase modulation 2 levels ITU-

T compatible

lFull duplex and half duplex with 4 wires line and half

duplex with 2 wires line

lWorking on point to point and multipoint networks

lManagement of fixed and controlled carrier

lAutomatic line equalizer

lAutomatic speed detection for cascade

connections.

lV24/V28 interface on DB25 connector

lSpeeds: 225, 300, 450, 600, 900, 1200, 1800,

2400, 3600, 4800, 7200, 9600, 14400,19200 bps

lSpeeds: 24000, 32000, 38400, 48000 and 64000 bps on

special version only

lSynchronous and asynchronous working with formats

up to 11 bit

lTime Out circuit for carrier stop in multipoint due to

fixed RTS for more than 32 Kbit

lC105/C106 delay: 0, 16, 32, 64, 128, 256, 512 bit

time

lLine impedance: 150 or 600 ohm balanced

lTransmission level: from -6 to + 6 dBm

lReceiver from + 6 dBm to threshold level

lC109 threshold: -30 or -40 dBm with

hysteresis > 2 dB

lC109 delay: off-on equal to 12 bit-time; on-

off equal to 17 bit-time

Base Band modem & Modem Eliminator...

are made in Italy products, projected and

manufactured by digicom S.p.A. leading company

on the market for twenty years with

Quality Certification according to

ISO9001/EN29000 andBABT.

The products are homologated, marked and

they are in conformity with ITU-I recommendations

warranting the highest Quality level.

BANDBASE 17/02/97

THIS DOCUMENT IS SUBEJCT

TO CHANGE WITHOUT NOTICE digicom S.p.A.

lMaximum distance for connection with twisted copper

6/10° cable:

- 33 km up to 1200 bps

- 30 km to 2400 bps

- 24 km to 4800 bps

- 14 km to 9600 bps

- 10 km to 19200 bps

- 3 km to 32000 bps

- 3 km to 38400 bps

- 2 km to 48000 bps

- 2 km to 64000 bps

lMonitor from management system MSS01 through

probe MSA01

lPower supply: 220 Vca - 50 Hz

lConsumption: 6 VA

lDimensions: 192 x 46 x 146 mm.

lWeight: 1,8 kg.

If LCM16P is suitable for any local serial connectivity,

modem eliminator is right for immediate connections

and plug & play between computers located in the same

room or near to each other.

The three versions proposed here below manage

different interfaces and they have consequently different

electrical and speed characteristics.

lLCM3a for V24/V28

lLCM3b for V35

lLCM3c for X21

lInterfaces for direct connection to DTE on any of the

two ports

lSpeed up to 76800 bps for LCM3a

lSpeed up to 1,024 Mbit for LCM3b and LCM3c

lAsynchronous and synchronous working with clock

generation

lTransparent codes, formats and protocols

lInterface signals regeneration

lInternal and external clock management

lFull duplex or half duplex

lRTS/CTS delay on LCM3a: 1, 4, 17, 70 msec

lRTS/CTS delay on LCM3b: 16, 24, 48 bit time

lRTS/CTS delay on LCM3c: 16, 24, 48 bit time

lV24/V28 interface on DB25 female connector

lV35 interface on 34 pin female connector

lX21 interface on DB15 female connector

lPower Supply: 220 Vca - 50 Hz

lConsumption: 10 VA

lPeso: 1,2 Kg

PRODUCT CODE DESCRIPTION

LCM16P 8D1678 Base band modem up to 19200 bps - V24/V28

LCM16PR 8D1726 Base band modem up to 19200 bps - V24/V28 - rack mount version

LCM16P64 8D1837 Base band modem up to 64000 bps - V24/V28 - V35 point/point - synchronous

RMC27 8D7069 Rack for 12 LCM16PR and 1 power supply

RMC28 8D7070 Rack for 10 LCM16PR and 2 power supplies

PSU27 8D6058 Power supply for RMC27 and RMC28 racks

LCM3a 8D1203 V24/V28 modem eliminator

LCM3b 8D1632 V35 modem eliminator

LCM3c 8D1633 X21 modem eliminator

CM5 8D5401 V35 interface adapter with no cable, to be used with LCM16P64

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