Digicom LCM16P User manual

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BANDBASE 17/02/97
THIS DOCUMENT IS SUBEJCT
TO CHANGE WITHOUT NOTICE
digicomS.p.A.
-ITALY-21010CardanoalCampoVAviaAlessandroVolta39
Tel.[phone]-Fax[phone]-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.

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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