Digicom LCM16P User's Manual
Contents
1. N D O Ba gt annul 222 iws Digicom SOGGbbbGGe SO LOCAL COMMUNICATION MODULE LCM 16P Base Band modem amp 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 1S09001 EN29000 andBABT The products are homologated marked and they are in conformity with ITU I recommendations warranting the highest Quality level THIS DOCUMENT IS SUBEJCT TO CHANGE WITHOUT NOTICE Telematics Base Band modem amp Mooem Eliminator LCM16P is acomplete and reliable base band modem to be used in pointto 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 Itis easy to programand itis in conformity with ITU 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 casc2. 00 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 028 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 THIS DOCUMENT IS SUBEJCT igi TO CHANGE WITHOUT NOTICE digicom S p A BANDBASE 17 02 97
3. ade connections Technical Features e Base band modem with phase modulation 2 levels ITU T compatible e Full duplex and half duplex with 4 wires line and half duplex with 2 wires line e Working on point to point and multipoint networks e Management of fixed and controlled carrier e Automatic line equalizer e Automatic speed detection for cascade connections e V24 V28 interface on DB25 connector e Speeds 225 300 450 600 900 1200 1800 2400 3600 4800 7200 9600 14400 19200 bps e Speeds 24000 32000 38400 48000 and 64000 bps on special version only e Synchronous and asynchronous working with formats up to 11 bit e Time Out circuit for carrier stop in multipoint due to fixed RTS for more than 32 Kbit e C105 C106 delay 0 16 32 64 128 256 512 bit time e Line impedance 150 or 600 ohm balanced e Transmission level from 6 to 6 dBm e Receiver from 6 dBm to threshold level e C109 threshold 30 or 40 dBm with hysteresis gt 2 dB e C109 delay off on equal to 12 bit time on off equal to 17 bit time Tel 39 331 70261 1 Fax 39 331 263733 hitp Awww digicomit digicomS p A ITALY 21010CardanoalCampo VA viaAlessandroVolta39 BANDBASE 17 02 97 PRODUCT CODE e Maximum 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
4. bps 2 km to 64000 bps e Monitor from management system MSS01 through probe MSA01 e Power supply 220 Vca 50 Hz e Consumption 6 VA e Dimensions 192 x 46 x 146 mm e Weight 1 8 kg If LCM16P is suitable for any local serial connectivity modem eliminator is right for immediate connections and plug amp 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 LCM3a for V24 V28 LCM3b for V35 LCM8c for X21 Interfaces for direct connection to DTE on any of the two ports e Speed up to 76800 bps for LCM3a e Speed up to 1 024 Mbit for LCM3b and LCM3c Asynchronous and synchronous working with clock generation Transparent codes formats and protocols Interface signals regeneration Internal and external clock management Full duplex or half duplex RTS CTS delay on LCM8a 1 4 17 70 msec RTS CTS delay on LCM3b 16 24 48 bit time RTS CTS delay on LCM3c 16 24 48 bit time V24 V28 interface on DB25 female connector V35 interface on 34 pin female connector X21 interface on DB15 female connector Power Supply 220 Vca 50 Hz Consumption 10 VA Peso 1 2 Kg DESCRIPTION LCM16P 8D1678 Base band modem up to 19200 bps V24 V28 LCMi6PR 8D1726 Base band modem up to 19200 bps V24 V28 rack mount version LCMi6P64 8D1837 Base band modem up to 640
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