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LaserBit LE-1300S/1E1 Plu User manual
Summary of LE-1300S/1E1 Plu
Page 1
E1 fiber optic converter with service channel interface le-820m/1e1 plus le-1300s/1e1 plus user’s manual rev. 2.0 laserbit communications corp. 1037 budapest,kunigunda u. 45. Hungary tel.: +36-1-4537440 fax: +36-1-2403570 www.Laserbitcommunications.Com.
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Copyright statement copyright © 2000 laserbit communications corp. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation or adoption) without written permission from laserbit communica...
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Limited warranty laserbit communications corp. Warrants that the laserbit product purchased will free from defects in material and workmanship for a period of one (1) year from the date of purchase. This warranty period will not be extended by virtue of a repair of the product or a replacement of an...
Page 4: About This Guide
About this guide this manual provides all the information required to install, configure, and use le-820m/1e1 plus and le-1300s/1e1 plus e1 to fiber optic converters. The above two models are identical in their functionality with the only difference being in their optical interface. While the le-820...
Page 5: Table of Contents
Table of contents 1. Introduction .......................................................................................................6 1.1 general description.........................................................................................6 1.2 theory of operation ..........................
Page 6: 1. Introduction
1. Introduction 1.1 general description the e1 plus fiber optic converter (le-820m/1e1 plus and le-1300s/1e1 plus) products from laserbit communications offer cost effective and highly reliable solution for connecting equipment with itu-t g.703 (e1) interface to optical networks. The converters give...
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The e1sc-uim (user interface module) gathers the rs-232 asynchronous serial data, the analogue voice channel and the alarm and control signals together and converts them into a synchronous 64 kb/s digital data stream using unique framing and error correction protocol. This data is then passed to the...
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Cpld logic the cpld (complex programmable logic device) is the heart of the e1 plus unit. The two major functions of this block is to multiplex/demultiplex the e1 data and the service channel data and to perform the encoding and decoding of the optical serial data. Pll (phase locked loop) circuits t...
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Management interface the management interface provides information about the local and remote frame sync loss and can be used to set the device to dual loop back mode. Front panel the front panel gives information about the actual status of the equipment including power, optical and e1 line status. ...
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E1sc-uim (user interface module) figure 3. E1sc-uim function blocks cs1 system connector all signals of the sc-uim are available on this 96 pin connector. Two db-37 connectors are used to make these signals accessible on the rear side of the unit. Cs2 db-9 connector for rs-232 connection, situated o...
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Cs4 the cs4 multiplexed digital data connector is a ten-pin interface provides interconnection between e1sc-mm (media converter and multiplexer) and the e1sc-uim (user interface module). It carries synchronous duplex 64 kbps data, which contains the rs-232 asynchronous serial data, the analogue voic...
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Analogue audio channel an adpcm codec is used to convert the analogue voice signals into a 16 kbps digital data and vice versa. Rs-232 interface the asynchronous serial interface is controlled by an uart chip. The parameters of the communication are set by dip switches and can be changed remotely to...
Page 13: 2. Installation
2. Installation the step-by-step procedure of installing the e1 plus converter is explained in the followings. Configuration before connecting the e1 plus device to the e1 and optical network, the operating parameters for the desired configuration should be set up. These parameters should match with...
Page 14: 3. Configuration
3. Configuration before connecting the e1 plus device to the g.703 network it should be configured to work properly with the local e1 equipment. All e1 plus units are pre-configured in the factory with the following settings: g.703 interface line interface: unbalanced, 75 ohm bnc connection line cod...
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3.2 e1 plus unit internal module arrangement 3.3 configuration jumpers – e1sc-mm psu e1sc-mm e1sc-uim j1 j2 j3 j4 j5 j6 j9 j10 j11 j12 j13 j7 j8 j14 sw1.
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Jitter attenuator settings (j1, j2, j3) jitter attenuator disabled the jitter attenuation circuit is placed in the receiver paths of copper side* the jitter attenuation circuit is placed in the transmit paths of copper side these three jumpers must not be installed together in the same time, only on...
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Tx logic gnd signal output is not connected to the logic ground* signal output is connected to the logic ground. Use this setting if it is required by the network operator. Rx logic gnd signal input is not connected to the logic ground* signal output is connected to the logic ground. Use this settin...
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3.4 configuration jumpers – e1sc-uim power source selector (jp2) locally stabilized voltage (+5v)* incoming voltage (+5v) handset mic polarity panasonic type handset* siemens type handset switch block s1, s2 jp1 jp2 jp2 jp2 jp1 jp1.
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3.5 service channel configuration settings (s1, s2) factory setting : 0 0 0 0 0 0 0 0 1 0 1 0 0 1 1 0 serin: method of handling the inbound 24 bit low speed signaling data off – 24 signaling bits are taken from the parallel input* on – 24 signaling bits are taken from the serial input refclksel: ref...
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Multifunction switches (s1[7-8], s2[1-8]) if remotecontrol=off s1[7] – n/a s1[8] - s2[1-8] – rs-232 configuration switches if remotecontrol=on s1[7-8] - s2[1-8] – station address for remote management s1[7] – a9 … s2[8] – a0 hwcontrol: rts/cts flow control off – flow control disabled* on – flow cont...
Page 21: 4. Technical Specifications
4. Technical specifications e1 line interface: g.703 nominal bit rate: 2048 kbit/s bit rate tolerance: ± 50 ppm line code: ami/hdb3 connector: bnc 75 ohm/rj-45 120 ohm optical 820 nm multimode tx power: -15 dbm (min) rx sensitivity: -31 dbm connector: st multimode 1300 nm single mode: tx power: -18 ...
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Rs-232 serial channel type of traffic flow: serial, asynchronous, duplex speed: 300/600/1200/2400/9600/19200/38400 bit/s speed tolerance: ± 4 % number of data bits: 5/6/7/8 number of start bits: 1 number of stop bits: 1/1.5/2 parity: odd/even/no parity flow control: hw (rts/cts)/no flow control inte...
Page 23: 5. Port Pinouts
5. Port pinouts serial rs-232 (db-9 male) pin signal function 1 dcd data carrier detected 2 rxd received data 3 txd transmitted data 4 dtr data terminal ready 5 gnd signal ground 6 dsr data set ready 7 rts request to send 8 cts clear to send 9 ri ring indicator handset (rj-11) pin signal function 1 ...
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Alarm signal and management input (db-37) pin signal function electrical 1 gnd signal ground - 20 bi-0 status and control input ttl 2 bi-1 status and control input ttl 21 bi-2 status and control input ttl 3 bi-3 status and control input ttl 22 bi-4 status and control input ttl 4 bi-5 status and cont...
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Alarm signal and management output (db-37) pin signal function electrical 1 gnd signal ground - 20 bo-0 status and control input open collector 2 bo-1 status and control input open collector 21 bo-2 status and control input open collector 3 bo-3 status and control input open collector 22 bo-4 status...
Page 26: 6. Led Description
6. Led description all the status led’s are located in the front panel of the e1 plus unit. The indicators are arranged into four groups according to their function as detailed below. Power the power led (green) lights when power supplied to the device that is the unit is connected to the appropriat...
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Service channel error – error indicator (red); if the error led is steadily on, it means that the fpga circuit could not download its operational code. Its blinking status indicates that other initialization error happened. Loop – loop back indicator (yellow); this led lights up when the device is t...
Page 28: Appendix A
Appendix a e1 background the invention of the telephone in 1876 (a.G. Bell) has completely changed the world. Today it would be difficult for us to imagine our life without the telephone. Even these days with the ever-growing number of computer networks and the booming internet, voice communication ...
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In a pcm30 system the frame comprises of 30 timeslots used for traffic and 2 code words that are used for synchronization and signaling purposes. Pdh has two primary communication systems as its foundation. These are the t1 system based on 1544 kbps that is recommended by ansi and the e1 system base...
Page 30: Appendix B
Appendix b characteristics of the pdh system. Characteristics e1 t1 a sampling frequency 8000 hz 8000 hz b number of samples per telephone signal 8000 per second 8000 per second c length of pcm frame 1/b=1/8000/s=125 µs 1/b=1/8000/s=125 µs d number of bits in each code word 8 8 e telephone channel b...
Page 31: Appendix C
Appendix c summary of pdh transmission rates. 64 kb/s 1544 kb/s 6312 kb/s 2048 kb/s 8448 kb/s 34368 kb/s 139264 kb/s 564992 kb/s 44736 kb/s 274176 kb/s 32064 kb/s 97728 kb/s 397200 kb/s x 3 x 3 x 30 x 24 x 4 x 4 x 4 x 4 x 4 x 7 x 6 x 5 x 3 x 4.
Page 32: Appendix D
Appendix d glossary a bit remote (or distant) alarm indicator ais alarm indication signal ami alternate mark inversion atm asynchronous transfer mode ber bit error ratio cas channel associated signaling crc-4 cyclic redundancy check for 2048kbit/s systems e1 2048kbit/s pcm communication system mainl...