RAD Data comm E1 User's Manual
Contents
1. Installation and Operation Manual FOM E1 T1 F1 T1 Fiber Optic Modem FOM E1 T1 E1 T1 Fiber Optic Modem Installation and Operation Manual Notice This manual contains information that is proprietary to RAD Data Communications Ltd RAD No part of this publication may be reproduced in any form whatsoever without prior written approval by RAD Data Communications Right title and interest all information copyrights patents know how trade secrets and other intellectual property or other proprietary rights relating to this manual and to the FOM E1 T1 and any software components contained therein are proprietary products of RAD protected under international copyright law and shall be and remain solely with RAD FOM E1 T1 is a registered trademark of RAD No right license or interest to such trademark is granted hereunder and you agree that no such right license or interest shall be asserted by you with respect to such trademark You shall not copy reverse compile or reverse assemble all or any portion of the Manual or the FOM E1 T1 You are prohibited from and shall not directly or indirectly develop market distribute license or sell any product that supports substantially similar functionality as the FOM E1 T1 based on or derived in any way from the FOM E1 T1 Your undertaking in this paragraph shall survive the termination of this Agreement This Agreement is effective upon your opening of the FOM E1 T12. 1 RCV RTIP 1 2 2 2 x x 2 3 TRM TTIP 3 L4 x me 4 5 5 6 6 7 7 8 8 9 RCV RRING 9 10 10 11 TRM TRING 11 x 11 L12 x x 12 13 13 14 14 15 15 Male DB 15 Connector Female DB 15 Connector FOM E1 T1 Side Alarm Equipment Side Twisted RCV RTIP 1 RCV RRING 2 3 TRM TTIP 4 C TRM TRING 5 6 Twisted 7 8 RJ 45 Connector E1 T1 Balanced Equipment Side Figure A 1 CBL FOME1T1 RJ45 Scheme A 2 FOM E1 T1 R Modem Card The 25 pin D type female connector located on the rear panel of the ASM MN 214 modem rack serves as an alarm relay port Table A 3 lists the functions of the DB 25 pins Table A 3 ASM MN 214 DB 25 Pin Assignment Pin Contact Alarm Type 10 22 Normally Closed Minor 10 21 Normally Open 13 25 Normally Closed Major 13 24 Normally Open A 2 FOM E1 T1 R Modem Card RAD 24 Raoul Wallenberg St Tel Aviv 69719 Israel Tel 972 3 6458181 Fax 972 3 6483331 972 3 6498250 E mail erika _y rad co il Web site www rad com Customer Response Form RAD Data Communications would like your help in improving its product documentation Please complete and return this form by mail or by fax or send us an e mail with your comments Thank you for your assistance Manual Name FOM E1 T1 Publication Number 284 200 01 03 Please grade the manual according to the following factors Excellent Good Fair Poor Very Poor Installation instructions g g
3. with feeding voltage U Interface ISDN Ports whose normal operating voltage exceeds the limits of SELV usually up to 120 VDC or telephone ringing voltages on which overvoltages from telecommunication networks are possible Always connect a given port to a port of the same safety status If in doubt seek the assistance of a qualified safety engineer Always make sure that the equipment is grounded before connecting telecommunication cables Do not disconnect the ground connection before disconnecting all telecommunications cables Some SELV and non SELV circuits use the same connectors Use caution when connecting cables Extra caution should be exercised during thunderstorms When using shielded or coaxial cables verify that there is a good ground connection at both ends The earthing and bonding of the ground connections should comply with the local codes The telecommunication wiring in the building may be damaged or present a fire hazard in case of contact between exposed external wires and the AC power lines In order to reduce the risk there are restrictions on the diameter of wires in the telecom cables between the equipment and the mating connectors Caution To reduce the risk of fire use only No 26 AWG or larger telecommunication line cords Attention Pour r duire les risques s incendie utiliser seulement des conducteurs de t l communications 26 AWG ou de section sup rieure Some ports are suitable for connec
4. 5 6 Installing the FOM E1 T1 R Card Appendix A Interface Connector Specifications A 1 Standalone FOM E1 T1 DB 15 Connector Balanced E1 T1 interface terminates in DB 15 female connector which also serves as an alarm relay Table A 1 describes the DB 15 pins that serve for the E1 T1 connection Table A 2 describes the DB 15 pins that serve for the alarm relay Table A 1 DB 15 Pin Assignment E1 T1 Pins Pin 3 11 Designation Send Data TTIP Send Data TRINC Receive Path RTIP Receive Path RRINC Function Transmit Data A wire FOM E1 T1 output Transmit Data B wire FOM E1 T1 output Receive Data A wire FOM E1 T1 input Receive Data B wire FOM E1 T1 input Table A 2 DB 15 Pin Assignment Alarm Relay Pins Pin 7 8 Contact Normally Closed Alarm Type Minor 15 8 Normally Open 5 6 Normally Closed 13 6 Normally Open Major Standalone FOM E1 T1 A 1 Appendix A Interface Connector Specifications FOM E1 T1 Installation and Operation Manual CBL E1T1 RJ45 Cable RAD offers an optional splitter cable CBL E1T1 RJ45 which connects the DB 15 female connector of the standalone unit to the balanced E1 T1 device and alarm equipment The CBL E1T1 RJ45 cable includes two DB 15 connectors male and female and one RJ 45 connector Figure A 1 illustrates the cable schematics
5. Chapter 1 Introduction 1 1 Overview This manual provides information on the technical characteristics installation and operation of the FOM E1 T1 fiber optic modem as a standalone unit and as FOM E1 T1 R rack mount card for the ASM MN 214 modem rack FOM E1 T1 is a fiber optic modem for transmission of E1 2 048 Mbps or T1 1 544 Mbps over multimode or single mode fiber optic media The communication equipment is connected to FOM E1 T1 according to the ITU G 703 standard The modem is designed to operate with several types of fiber optic cables and connectors The electrical signals are connected through BNC connectors or a DB 15 connector LED indicators show the operational status of the modem on the front panel Alarms indicating faults in modem operation are provided to a supervisory port Local and remote loopback tests are available for diagnostics The following versions of the FOM E1 T1 modem are available e FOM E1 T1 standalone unit e FOM E1 T1 R a plug in card for installation in the ASM MN 214 19 inch modem rack holding up to 14 cards see Chapter 5 for the FOM E1 T1 R description Power Supply Options The following power supply options are available e ACsource 115 VAC or 230 VAC e DC source 24 VDC or 48 VDC Overview 1 1 Chapter 1 Introduction Application FOM E1 T1 Installation and Operation Manual In the application illustrated each FOM E1 T1 receives E1 or T1 signals that are equalized
6. FLOATING BNC shield is disconnected from FLOATING the chassis ground for E1 T1 balanced JP1 JP2 JP3 JP4 JP5 JP6 Selects the E1 T1 100 ohm BAL T1 T1 100Q balanced electrical interface 450 ohm BAL CEPT E1 1200 balanced 120 ohm 75 ohm UNBAL CEPT E1 75Q unbalanced BAL CEPT Installing FOM E1 T1 R into the ASM MN 214 Card Cage gt To install FOM E1 T1 R into ASM MN 214 1 Install the ASM MN 214 card cage in the 19 inch rack 2 Insert the FOM E1 T1 R card into one of the ASM MN 214 slots 3 Push the card into the cage until it is fully inserted into the edge connector inside the rack 4 Tighten the screws on the front panel of the card Connecting the Interfaces FOM E1 T1 R uses the ASM MN 214 rear panel terminal block ports for the E1 T1 connections The 25 pin D type female connector serves as an alarm relay port Balanced E1 T1 The two TX screws of the terminal block serve as the E1 T1 electrical signal outputs of the modem The RX screws serve of the terminal block as the electrical signal inputs to the modem Unbalanced E1 When operating FOM E1 T1 R with unbalanced E1 interface use CIA TB BNC 214 adapter which converts the terminal block connector into two coaxial BNC connectors Fiber Optic The ST SC or FC fiber optic connectors are located on the front panel of the modem card Alarm Relay The ASM MN 214 DB 25 connector serves as an alarm relay port see Appendix A for the connector pinout
7. g g g Operating instructions g C g g g Manual organization g g g g g Illustrations g g g g g The manual as a whole m g g g g What did you like about the manual Error Report Type of Error s Incompatibility with product or Problem s Difficulty in understanding text Regulatory information Safety Compliance Warnings etc Difficulty in finding needed information Missing information Illogical flow of information Style spelling grammar references etc Appearance Other Quouogougogugy2u Please list the exact page numbers with the error s detail the errors you found information missing unclear or inadequately explained etc and attach the page to your fax if necessary Please add any comments or suggestions you may have You are Distributor End user VAR Other OOO D Who is your distributor Your name and company Job title Address Direct telephone number and extension Fax number E mail data communications www rad com INTERNATIONAL HEADQUARTERS 24 Raoul Wallenberg Street Tel Aviv 69719 Israel Tel 972 3 6458181 Fax 972 3 6498250 972 3 6474436 Email rad rad co il U S HEADQUARTERS 900 Corporate Drive Mahwah N J 07430 Tel 201 529 1100 Toll Free 1 800 444 7234 Fax 201 529 5777 Email market radusa com Publication No 284 200 01 03
8. of the ASM MN 214 is 100 115 or 230 VAC 10 47 to 63 Hz 5 2 Power Supply FOM E1 T1 Installation and Operation Manual Chapter 5 FOM E1 T1 R Card Version DC Supply The DC power supply is 48 VDC 36 to 72 VDC or 24 VDC 18 to 32 VDC It uses a DC DC converter module to provide the power required for the cards Power Supply Redundancy This special ordering option is equipped with two separate power supplies operating together and sharing the load of the whole card cage If either of the power supplies fails the other one will continue to supply power to the full card cage Two LED indicators show activity of each power supply They should both light when mains power is provided Note t is possible to combine AC and DC power supplies in the same cage ofa 0 oF o of f 58 US e y 999099 920 2057 af af a o ad igh f 9 9 9 97 of of 0707 oF m Figure 5 2 ASM MN 214 Front Panel Power Supply 5 3 Chapter 5 FOM E1 T1 R Card Version FOM E1 T1 Installation and Operation Manual 5 4 5 3 FOM E1 T1 R Front Panel Figure 5 3 shows the FOM E1 T1 R card front panel The front panel of FOM E1 T1 R includes fiber optic connectors loopback initiation switch and LED indicators The front panel LEDs of the card version are identical in their functionality to those of the standalone device For this info
9. package and shall continue until terminated RAD may terminate this Agreement upon the breach by you of any term hereof Upon such termination by RAD you agree to return to RAD the FOM E1 T1 and all copies and portions thereof For further information contact RAD at the address below or contact your local distributor International Headquarters U S Headquarters RAD Data Communications Ltd RAD Data Communications Inc 24 Raoul Wallenberg St 900 Corporate Drive Tel Aviv 69719 Israel Mahwah NJ 07430 USA Tel 972 3 6458181 Tel 201 529 1100 Toll free 1 800 444 7234 Fax 972 3 6498250 Fax 201 529 5777 E mail rad rad co il E mail market radusa com 1987 2002 RAD Data Communications Ltd Publication No 284 200 01 03 Limited Warranty RAD warrants to DISTRIBUTOR that the hardware in the FOM E1 T1 to be delivered hereunder shall be free of defects in material and workmanship under normal use and service for a period of twelve 12 months following the date of shipment to DISTRIBUTOR If during the warranty period any component part of the equipment becomes defective by reason of material or workmanship and DISTRIBUTOR immediately notifies RAD of such defect RAD shall have the option to choose the appropriate corrective action a supply a replacement part or b request return of equipment to its plant for repair or c perform necessary repair at the equipments location In the event that RAD requests the return of equ
10. signal lines and interface cables The ambient operating temperature of FOM E1 T1 is 0 to 50 C 32 to 122 F at relative humidity of 90 non condensing 2 2 Package Contents The package of the standalone FOM E1 T1 modem includes e One FOM E1 T1 unit or FOM E1 T1 R card e Last Mile Access and Intelligent Modems CD e AC power cord or DC power supply connector kit e CBL FOME1T1 RJ 45 cable for the balanced E1 T1 and alarm relay connection if ordered e RM 9 rack installation kit if ordered Package Contents 2 1 Chapter 2 Installation and Setup FOM E1 T1 Installation and Operation Manual N Warning Caution 2 3 Installation and Setup FOM E1 T1 is a standalone device intended for tabletop or bench installation It is delivered completely assembled No provision is made for bolting the unit on the tabletop To install FOM E1 T1 1 Determine the required configuration of FOM E1 T1 and set the internal jumpers accordingly see Configuring FOM E1 T1 below 2 Connectthe line see Connecting the Fiber Optic Interface below 3 Connect the DTE see Connecting the E1 T1 Interface below 4 Connect power to the unit see Connecting the Power below Access to the inside of the equipment is permitted only to authorized and qualified service personnel To avoid accidental electric shock always disconnect the interface cables and the power cord before removing the unit from its casing Line voltages are pres
11. switches to the CONNECTED position If you are using balanced E1 T1 connection set the SW1 and SW2 switches to the FLOATING position Installation and Setup FOM E1 T1 Installation and Operation Manual Chapter 2 Installation and Setup Note Setting the SW1 and SW2 switches to CONNECTED is valid for coaxial cables only When using 4 wire connection set these switches to FLOATINC 5 Slide the PCB interior back into the case 6 Screw in the two rear panel screws to secure the PCB in the case Now you can proceed with the line DTE and power connections as described below OUTPUT GROUNDED GROUNDED Fiber Optic El Interface Board FLOATING E FLOATING SW 75 ohm BAL UNBAL CEPT INTERFACE Figure 2 1 FOM E1 T1 PCB Layout Installation and Setup 2 3 Chapter 2 Installation and Setup FOM E1 T1 Installation and Operation Manual Table 2 1 FOM E1 T1 Internal Jumpers and Switches Jumper Switch Function Possible Settings Factory Setting SW3 AIS When a major alarm is ON Transmit AIS ON detected AIS is OFF Do not transmit AIS transmitted to either the electrical or optical interface SW2 INPUT Ground Controls connection of CONNECTED BNC shield is SW1 OUTPUT Ground the BNC shield to the connected to the chassis ground chassis ground for E1 unbalanced FLOATING BNC shield is FLOATING disconnected from the chassis ground for E1 T1 balanced JP2
12. the CONNECTED BNC shield is connected SW1 OUTPUT Ground BNC shield to the chassis to the chassis ground ground for E1 unbalanced FLOATING BNC shield is disconnected from the chassis ground FLOATING for E1 T1 balanced JP2 JP4 JP5 JP6 JP7 JP8 Selects the E1 T1 electrical 100 ohm BAL T1 T1 100Q balanced INTERFACE interface DB 15 connector 120 ohm BAL CEPT E1 120Q balanced 120 ohm DB 15 connector BAL CEPT 75 ohm UNBAL CEPT E1 750 unbalanced BNC connectors Note For FOM E1 T1 units with 115 VAC factory setting is 10042 BAL T1 Installing FOM E1 T1 1 Quick Start Guide FOM E1 T1 Installation and Operation Manual Connecting the Cables gt To connect cables 1 2 3 Connect the E1 T1 electrical interface Connect the fiber optic interface Connect the power cable first to the modem then to the mains Operation starts when the power is applied to the rear panel power connector Operating FOM E1 T1 Check that the TEST switch is set to the NORM position Verify LED status All the LED indicators should be OFF except for the PWR indicator If there is an indication of a malfunction or fault run a diagnostic test Operating FOM E1 T1 Contents Chapter 1 Introduction NES Et 1 1 EE EE 1 1 ADPIIGALION e M 1 2 scii ces M 1 2 EE B oju T 7 1 3 1 3 Functional D
13. the FONGETT TUR Car RE 5 5 Setting Internal Jumpers and Switches 0 00 00 cece cece cee ceeceeeesceaecaeeeeseaesaeeeeetaecaaesaeeeesaeeaeees 5 5 Installing FOM E1 T1 R into the ASM MN 214 Card Cage 5 6 Connecting the Interfaces pere htt beh ip i a EE ERE eR hri te arta eaa 5 6 Appendix A Interface Connector Specifications List of Figures 1 1 FOM E1 T iei m 1 2 1 2 FOM ET1 T1 3D View 1 3 1 3 FOMSEUTT Block DIGBFINTL uud dubii tci o qp ocu id I au rng pha EX MK e bula achats Di ER RNAs 1 3 2 1 FOM E1 TI PCB Eelere 2 3 2 2 FOM E1 T1 Rear Panel AC Powered Unit cesses nennen enne nnns 2 4 3 1 FOM E1 T1 Front Banel enne n emen en ent enr nr sess en entere rn nnne see eene nin nn nnne 3 1 4 1 Local Analog Loopback dem ns 4 2 4 2 Remote Digital Loopback de idane oiai aea Erias 4 2 5 1 ASM MN 214 Rear Panel 5 2 5 2 ASM MN 214 Front Panel 5 3 5 3 FOM E1 T1 R Front Panel 5 4 EP EMI PCB Lay 07 Tm 5 5 List of Tables Tals Fiber Optic Interface C o 1 2 2 1 FOM E1 T1 Internal Jumpers and ebe eeendtegebegtgeebege geneet Deeg 2 4 3 1 FOM E1 T1 Front Panel Controls and Indicators cccccccccsessscececececcecsesssseeeeeeeceeeessstsaeeeeess 3 1 4 1 DB 15 Connector Alarm Relay Eet ergeet See 4 1 Kl 4 3 5 1 FOM ET TT R Internal Jumpers and Switches iere b perti red to teo a cota es eina sepa dette aaa 5 6 ii FOM E1 T1 Installation and Operation Manual Versions
14. 50 C 32 122 F Up to 90 non condensing N Warning Chapter 2 Installation and Setup This chapter describes installation and setup procedures for the standalone FOM E1 T1 modem FOM E1 T1 is delivered completely assembled It is designed for tabletop or 19 inch rack installation For instructions on installation of a single unit or two units in a 19 inch rack refer to the rack mounting kit for 19 inch racks guide that comes with the RM kit After installing the unit refer to Chapter 3 to assure normal operation In case a problem is encountered refer to Chapter 4 for test instructions Internal settings adjustment maintenance and repairs may be performed only by a skilled technician who is aware of the hazards involved Always observe standard safety precautions during installation operation and maintenance of this product 2 1 Site Requirements and Prerequisites An AC powered FOM E1 T1 should be installed within 1 5m 5 ft of an easily accessible grounded AC outlet The outlet should furnish 115 VAC or 230 VAC depending on rated voltage of unit A DC powered FOM E1 T1 unit requires 48 VDC or 24 VDC power source which must be adequately isolated from the mains supply In order to prevent a fire hazard a suitable fuse should be installed in the DC line Allow at least 90 cm 36 in of frontal clearance for operating and maintenance accessibility Allow at least 10 cm 4 in clearance at the rear of the unit for
15. JP4 JP5 JP6 JP7 JP8 Selects the E1 T1 100 ohm BAL T1 T1 100Q balanced INTERFACE electrical interface DB 15 connector 120 ohm BAL CEPT E1 1200 120 ohm balanced BAL CEPT DB 15 connector 75 ohm UNBAL CEPT E1 750 unbalanced BNC connectors Note For FOM E1 T1 units with 115 VAC factory setting is 10042 BAL T1 Connecting the Interfaces Figure 2 2 illustrates the AC powered FOM E1 T1 unit rear panel IN oeo e Figure 2 2 FOM E1 T1 Rear Panel AC Powered Unit Connecting the Fiber Optic Interface Two fiber optic ST SC or FC connectors are located on the rear panel and marked TX and RX gt To connect the fiber optic cables 1 Remove the protective caps from the connectors and store them in a safe place for later use 2 4 Installation and Setup FOM E1 T1 Installation and Operation Manual Chapter 2 Installation and Setup Note AN Warning 2 Connectthe transmit fiber to the connector marked TX and the receive fiber to the connector marked RX 3 Atthe remote unit connect the transmit fiber to RX and the receive fiber to TX Connecting the E1 T1 Interface The rear panel E1 T1 connector provides interface for data input output clock reference and control signal exchange between FOM E1 T1 and E1 T1 equipment Balanced E1 T1 interface terminates in DB 15 female connector which also serves as an alarm relay see Appendix A for the connector pinout Unbalanced E1 interface terminat
16. T1 is powered up LOC Yellow LED ON A local loopback is active REM Yellow LED ON A remote loopback is active TEST Slide switch LOC Activates local analog loopback REM Activates remote digital loopback NORM Normal operation no loopbacks are active ELECTRICAL LOW Red LED ON E1 T1 electrical input is below G 703 level ELECTRICAL AIS Yellow LED ON E1 T1 electrical interface received All 1s string OPTICAL ERR Red LED ON Bit error rate of the signal received from at the optical interface is 10 or worse OPTICAL AIS Yellow LED ON Fiber optic interface received All 1s string Front Panel Controls and Indicators 3 1 Chapter 3 Operations FOM E1 T1 Installation and Operation Manual 3 2 Operating Instructions Turning On FOM E1 T1 starts operating as soon as it is connected to the power source The PWR LED turns ON and remains lit as long as the units are connected to the mains Normal Operating Instructions During normal operation all indicators should be OFF except for the PWR indicator Some of LEDs may turn on upon the FOM E1 T1 power up indicating that other Note ES i i Gun communication equipment is not functioning properly Turning Off Turn FOM E1 T1 off by disconnecting the power cord from the mains 3 2 Operating Instructions Chapter 4 Testing and Diagnostics This chapter describes the FOM E1 T1 diagnostics functions which include e Front panel LED indicators e Alarm relay e D
17. TP with 80 dB longitudinal conversion loss LCL Unless otherwise specified or described in the manual TNV 1 and TNV 3 ports provide secondary protection against surges on the data lines Primary protectors should be provided in the building installation The equipment is designed to provide adequate protection against electro static discharge ESD However it is good working practice to use caution when connecting cables terminated with plastic connectors without a grounded metal hood such as flat cables to sensitive data lines Before connecting such cables discharge yourself by touching earth ground or wear an ESD preventive wrist strap FCC 15 User Information This equipment has been tested and found to comply with the limits of the Class A digital device pursuant to Part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the Installation and Operation manual may cause harmful interference to the radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Canadian Emission Requirements This Class A digital apparatus meets all the requirements of the Canadian In
18. amaged make the unit inoperative and secure it against unintended operation Installation and Setup 2 5 Chapter 2 Installation and Setup FOM E1 T1 Installation and Operation Manual Connecting AC Power AC power should be supplied to FOM E1 T1 through the 1 5m 5 ft standard power cable terminated by a standard 3 prong plug The cable is provided with the unit To connect AC power 1 Connect the power cable to the power connector on the FOM E1 T1 rear panel 2 Connect the power cable to the mains outlet The unit will be turned on automatically upon connection to the mains Connecting DC Power gt To connect DC power e Refer to DC power supply connection supplement Installation and Setup Chapter 3 Operations This chapter provides the following information for the FOM E1 T1 standalone modem e FOM ET TI front panel indicators and controls e Operating procedures turn on front panel indications performance monitoring and turn off e Installation procedures given in Chapter 2 must be completed and checked before attempting to operate FOM E1 T1 3 1 Front Panel Controls and Indicators Figure 3 1 shows the FOM E1 T1 front panel Table 3 1 lists the FOM E1 T1 controls and indicators RAD FOME1 T1 ELECTRICAL OPTICAL Dr 2 cri PWR LOW AIS ERR AIS Figure 3 1 FOM E1 T1 Front Panel Table 3 1 FOM E1 T1 Front Panel Controls and Indicators Name Type Function PWR Green LED ON FOM E1
19. anual Chapter 1 Introduction 1 2 Physical Description FOM E1 T1 is a compact unit intended for installation on desktops or shelves An optional rack mount adapter kit enables FOM E1 T1 installation into a 19 inch rack Figure 1 2 shows a 3D view of FOM E1 T1 TEST DI FOM E0 T1 NORM OPTICAL L SS Pe i tae Lou ais ERR ELECTRICAL AIS Figure 1 2 FOM ET T1 3D View The front panel indicates modem status The front panel indicators and controls are described in Chapter 3 The rear panel connectors and internal jumpers are described in Chapter 2 1 3 Functional Description This section describes the functional circuitry of the FOM E1 T1 fiber optic modem FOM E1 T1 is used for transmission of E1 2 048 Mbps and T1 1 544 Mbps over multimode or single mode fiber optic media The unit is transparent to framing and can transmit data using any framing pattern with HDB3 or B8ZS coded signals Figure 1 3 illustrates the FOM E1 T1 block diagram LED TD CDP to F O RD CDP DTE TC amp RC Interface Encoder LED Decoder AGC Equalizer F O to CDP EXT CLK Clock Recovery Receive Clock PLL External Clock Transmit Clock Figure 1 3 FOM E1 T1 Block Diagram FOM E1 T1 comprises the following signal processing stages e Signal conversion e Data clock recovery e Data transfer Functional Descri
20. cket If a power switch is provided in the equipment set it to the OFF position If the power cord cannot be readily disconnected in case of emergency make sure that a readily accessible circuit breaker or emergency switch is installed in the building installation Connection of DC Mains Unless otherwise specified in the manual the DC input to the equipment is floating in reference to the ground Any single pole can be externally grounded Due to the high current capability of DC mains systems care should be taken when connecting the DC supply to avoid short circuits and fire hazards DC units should be installed in a restricted access area i e an area where access is authorized only to qualified service and maintenance personnel Make sure that the DC supply is electrically isolated from any AC source and that the installation complies with the local codes The maximum permissible current capability of the branch distribution circuit that supplies power to the product is 16A The circuit breaker in the building installation should have high breaking capacity and must operate at short circuit current exceeding 35A Before connecting the DC supply wires ensure that power is removed form the DC circuit Locate the circuit breaker of the panel board that services the equipment and switch it to the OFF position When connecting the DC supply wires first connect the ground wire to the corresponding terminal then the positive pole and last
21. cluding electrical business equipment Supplementary Information The product herewith complies with the requirements of the EMC Directive 89 336 EEC and the Low Voltage Directive 73 23 EEC The product was tested in a typical configuration TA Haim Karshen VP Quality Tel Aviv October 3rd 1996 European Contact RAD Data Communications GmbH Otto Hahn Str 28 30 85521 Ottobrunn Riemerling Germany Quick Start Guide Installation of FOM E1 T1 should be carried out only by an experienced technician If you are familiar with FOM E1 T1 use this quick start guide to set it up for operation This guide describes the standalone version of the modem Perform the installation procedures for both the local and the remote units 1 Installing FOM E1 T1 Configuring FOM E1 T1 1 Open the modem s case 2 Select the E1 T1 electrical interface JP2 JP4 JP5 JP6 JP7 and JP8 3 If using E1 unbalanced interface connect the BNC shield to the chassis ground If you are using balanced E1 T1 leave the shield floating SW1 and SW2 4 Close the modem s case Table below provides details on the functions of the internal jumpers and switches and their default settings Jumper Switch Function Possible Settings Factory Setting SW3 AIS When a major alarm is ON Transmit AIS ON detected AIS is transmitted OFF Do not transmit AIS to either the electrical or optical interface SW2 INPUT Ground Controls connection of
22. eScrIpEIOTius issuer seri E GR TRES MONTIS N E E INEP I EPA IO ARI LE n HEU 1 3 Signal e 1 4 Data Clock Recovery misini sanirane aaora ar EE E E E a 1 4 Data Transfer EN 1 4 TA Technical Specifications EE 1 5 Chapter 2 Installation and Setup 2 1 Site Requirements and RE 2 1 2 2 Package EE 2 1 2 3 EE 2 2 Contig ring aos alg EE 2 2 Connecting the TIRES AIG M peene EEEE E EENET EEEE EAE e 2 4 Connecting the POWER e X aS 2 5 Chapter 3 Operations 3 1 Front Panel Controls e ioeieceeuta veio rios toot pl eiN ES PNE UP pee rA dS uiui 3 1 3 2 Operating De E 3 2 UMN Cf tO RR Dena Ud NNI se tds 3 2 N rmal Qp rating RE EENEG oa deditos luin d itane A usta 3 2 NIU Iu eL 3 2 Chapter 4 Testing and Diagnostics 4 1 Status Indicators and Alarm Eelsten 4 1 Front Panel idbrquec e O 4 1 Alara Relay Getters ie Edel ee 4 1 Ad Eeer E ctv E 4 2 Local Analog Loopback EEB tete eee te e AEN 4 2 Remiote Digital Loopback REB tete ott rre tita d ne peer tr de a de ER 4 2 4 3 Troubleshooting NStUCONS Mc 4 3 4A Fregu ntly EE 4 4 Chapter 5 FOM E1 T1 R Card Version MF DULL Lee m 5 1 Pa Vo Uis 5 2 ele 5 2 IDGSSUDDIV sce restes ferente OIM detis t dtu ns 5 3 Power Supply Redundatcy us ciet ttt teta Ee EES 5 3 Bio PONCEDLTUR le E 5 4 FOM E1 T1 Installation and Operation Manual i Table of Contents 54 Installing
23. ent inside FOM E1 T1 when it is connected to power and or to the lines Moreover under external fault conditions dangerous voltages may appear on the lines connected to the unit Any adjustment maintenance and repair of the opened instrument under voltage should be avoided as much as possible and when inevitable should be carried out only by a skilled technician who is aware of the hazard involved Capacitors inside the instrument may remain charged even after the instrument has been connected from its power supply source FOM E1 T1 contains components sensitive to electrostatic discharge ESD To prevent ESD damage avoid touching the internal components Before moving jumpers touch the FOM E1 T1 frame Configuring FOM E1 T1 This section describes how to configure FOM E1 T1 for a typical application Figure 2 1 illustrates the layout of the FOM E1 T1 printed circuit board Table 2 1 provides details on the functions of the internal jumpers and switches and their default settings To configure FOM E1 T1 1 Disconnect all the cables connected to FOM E1 T1 2 Release the two rear panel screws and use them as levers to slide out the PCB interior of the unit 3 Select the E1 T1 electrical interface E1 balanced E1 unbalanced or T1 balanced by setting the JP2 JP4 JP5 JP6 JP7 and JP8 jumpers to appropriate position 4 If using E1 unbalanced interface connect the BNC shield to the chassis ground by setting the SW1 and SW2
24. es in two coaxial BNC connectors designated as IN and OUT IN refers to the FOM E1 T1 input signal OUT refers to a signal transmitted from FOM E1 T1 to the attached equipment RAD offers an optional splitter cable for connecting the DB 15 port to the balanced E1 T1 equipment and alarm device refer to Appendix A for further details The E1 and T1 ports should be connected to SELV Safety Extra Low Voltage links only Connecting the Power AN Warning To connect the power to FOM E1 T1 refer to the appropriate section below depending on your version of the unit AC or DC Before switching on this unit and connecting or disconnecting any other cable the protective earth terminals of this unit must be connected to the protective ground conductor of the mains power cord If you are using an extension cord power cable make sure it is grounded as well Any interruption of the protective grounding conductor inside or outside the instrument or disconnecting of the protective earth terminal can make this unit dangerous Intentional interruption is prohibited The line fuse is located in an integral type fuse holder located on the rear panel Make sure that only fuses of the required rating as marked on the rear panel are used for replacement Do not use repaired fuses or short circuit the fuse holder Always disconnect the mains cable before removing or replacing the fuse Whenever it is likely that the fuse protection has been d
25. iagnostic loopbacks In addition this chapter provides some tips on troubleshooting and frequently asked questions 4 1 Status Indicators and Alarm Relay Front Panel LEDs Alarm Relay The status of FOM E1 T1 is indicated by the front panel LED indicators For description of LED indicators and their functions refer to Chapter 3 FOM E1 T1 supports dry contact alarm relay via reserved pins of the DB 15 female connector The following fault conditions trigger relay of the major and minor alarms e Major alarms are initiated when E1 T1 electrical input becomes lower than G 703 electrical levels or bit error rate at the fiber optic interface is 10 or worse e Minor alarms occur when an Alarm Indication Signal is received at the E1 T1 electrical or fiber optic interfaces Table 4 1 lists the DB 15 connector pins used for the alarm relay Table 4 1 DB 15 Connector Alarm Relay Pins Pin Contact Alarm Type 7 8 Normally Closed Minor 15 8 Normally Open 5 6 Normally Closed Major 13 6 Normally Open Status Indicators and Alarm Relay 4 1 Chapter 4 Testing and Diagnostics FOM E1 T1 Installation and Operation Manual 4 2 Diagnostic Tests Local Analog Loopback LLB FOM E1 T1 supports activation of a local loopback which tests the performance of the E1 T1 electrical interface of the local unit and equipment attached to it The data received at the E1 T1 electrical interface is looped back to the equip
26. ipment each party shall pay one way shipping costs RAD shall be released from all obligations under its warranty in the event that the equipment has been subjected to misuse neglect accident or improper installation or if repairs or modifications were made by persons other than RAD s own authorized service personnel unless such repairs by others were made with the written consent of RAD The above warranty is in lieu of all other warranties expressed or implied There are no warranties which extend beyond the face hereof including but not limited to warranties of merchantability and fitness for a particular purpose and in no event shall RAD be liable for consequential damages RAD shall not be liable to any person for any special or indirect damages including but not limited to lost profits from any cause whatsoever arising from or in any way connected with the manufacture sale handling repair maintenance or use of the FOM E1 T1 and in no event shall RAD s liability exceed the purchase price of the FOM E1 T1 DISTRIBUTOR shall be responsible to its customers for any and all warranties which it makes relating to FOM E1 T1 and for ensuring that replacements and other adjustments required in connection with the said warranties are satisfactory Software components in the FOM E1 T1 are provided as is and without warranty of any kind RAD disclaims all warranties including the implied warranties of merchantability and fitness for a pa
27. ment attached to it see Figure 4 1 Coax OO E1 or T1 BERT a ren Figure 4 1 Local Analog Loopback LOC Position gt To activate local loopback e Slide the front panel TEST switch to the LOC position The TEST LOC indicator lights up and remains lit as long as the local loopback is active Remote Digital Loopback RLB FOM E1 T1 supports activation of a remote loopback which tests the performance of the local unit s E1 T1 electrical and optical interfaces and the remote unit s optical interface The data received at the optical interface of the remote unit is transmitted to the remote electrical interface and at the same time is looped back to the local unit see Figure 4 2 REM Position Fiber Optic ad a Local Remote E1 or T1 BERT aM FOM E1 T1 CG d FOM E1 T1 Figure 4 2 Remote Digital Loopback gt To activate remote loopback e Slide the front panel TEST switch to the REM position The TEST REM indicator lights up and remains lit as long as the remote loopback is active 4 2 Diagnostic Tests FOM E1 T1 Installation and Operation Manual Chapter 4 Testing and Diagnostics 4 3 Troubleshooting Instructions Table 4 2 provides troubleshooting details Perform the actions listed under Corrective Measures in the order given in the table until the problem is corrected Table 4 2 Troubleshooting Chart Symptom Probable Cause s Correc
28. nal block and a DB 25 connector A protection cover protects the terminal block connectors The terminal block contains screws for connecting the transmit and receive pairs and ground for the balanced E1 T1 interface The transmit pair is connected to the terminals marked XMT the receive pair to the terminals marked RCV while the fifth screw is a terminal for optional ground connection When operating FOM E1 T1 R with unbalanced E1 interface use a CIA TB BNC 214 adapter which converts the terminal block connector into two coaxial BNC connectors The 25 pin D type female connector serves as an alarm relay port see Appendix A for the connector pinout ASM MN 214 Card Cage 5 1 Chapter 5 FOM E1 T1 R Card Version FOM E1 T1 Installation and Operation Manual Terminal Block CIA TB BNC 214 Figure 5 1 ASM MN 214 Rear Panel 5 2 Power Supply The FOM E1 T1 R card is powered from the ASM MN 214 power supply via its chassis Each FOM E1 T1 R card has two fuses that protect the entire system against power failure due to a short circuit in one card see Figure 5 4 The ratings of the fuses are 1A 250V and 50 mA 250V The ASM MN 214 card cage can accept both AC and DC power supplies LED indicators located on the ASM MN 214 front panel see Figure 5 2 show activity when the power supply is connected to the mains plug The power supply supports the full card cage with any combination of cards AC Supply The AC power supply
29. nit detected Electrical Low alert Check the remote unit and the remote attached equipment for possible fault Troubleshooting Instructions Chapter 4 Testing and Diagnostics 4 4 gt FOM E1 T1 Installation and Operation Manual 4 4 Frequently Asked Questions Does FOM E1 T1 operate opposite FOM 40 No The fiber optic interfaces of these modems are not compatible Can I connect FOM E1 T1 with a balanced interface to FOM E1 T1 with an unbalanced interface Yes What is the maximal distance between FOM E1 T1 and end equipment E1 link The FOM E1 T1 output conforms to the C 703 standard the coding is bipolar 3V CDP with the maximum attenuation of 6 dB This gives us a range of approximately 300 meters for a balanced 24 AWG 0 5 mm line The range for a coax cable is about 150 meters Frequently Asked Questions Chapter 5 FOM E1 T1 R Card Version This chapter describes the card cage version of FOM E1 T1 It discusses the following topics e ASM MN 214 card cage e FOM E1 T1 R plug in card for the ASM MN 214 cage e Cage and card power supply e Installation of cage and card 5 1 ASM MN 214 Card Cage The ASM MN 214 card cage contains one or two power supplies and up to 14 plug in cards The card types can be FOM E1 T1 R or other RAD rack version modems converters any combination of up to 14 plug in cards For each of the 14 cards the rear panel see Figure 5 1 contains a male connector for the termi
30. on lines Protective earth the marked lug or terminal should be connected to the building protective earth bus Some products may be equipped with a laser diode In such cases a label with the laser class and other warnings as applicable will be attached near the optical transmitter The laser warning symbol may be also attached Please observe the following precautions e Before turning on the equipment make sure that the fiber optic cable is intact and is connected to the transmitter e Do not attempt to adjust the laser drive current e Do not use broken or unterminated fiber optic cables connectors or look straight at the laser beam e The use of optical devices with the equipment will increase eye hazard e Use of controls adjustments or performing procedures other than those specified herein may result in hazardous radiation exposure ATTENTION The laser beam may be invisible Always observe standard safety precautions during installation operation and maintenance of this product Only qualified and authorized service personnel should carry out adjustment maintenance or repairs to this product No installation adjustment maintenance or repairs should be performed by either the operator or the user Handling Energized Products General Safety Practices Do not touch or tamper with the power supply when the power cord is connected Line voltages may be present inside certain products even when the power switch if in
31. ps T1 1 544 Mbps User selectable e F1 1200 balanced or 75Q unbalanced e T1 1000 balanced E1 HDB3 T1 B8ZS Balanced 15 pin D type female Unbalanced two BNC See Table 1 1 For BER 10 e 38 dBm at 850 nm e 40 dBm at 1310 nm or 1550 nm ST SC or FC 28 dB for all types of optical interfaces 20 dB for 850 nm over 62 5 125 22 dB for 1310 nm over 9 125 28 dB for 1310 nm or 1550 nm laser over 9 125 Normally Open and Normally Closed using different pins 15 pin D type female ON The unit is powered ON The unit is in local loopback mode ON The unit is in remote loopback mode ON The electrical interface input is below G 703 electrical levels ON An All 1s string is received at the electrical interface ON Bit error rate of the received signal from the optical interface is 10 or worse ON An All 1s string is received at the optical interface Technical Specifications 1 5 Chapter 1 Introduction Physical Power Height Width Depth Weight AC Voltage DC Voltage Fuses Environment Temperature 1 6 Humidity Technical Specifications FOM E1 T1 Installation and Operation Manual 44 mm 1 7 in 1U 179 mm 7 0 in 203 mm 8 0 in 1 1 kg 3 0 Ib 115 or 230 VAC 10 50 or 60 Hz 6W 24 VDC 18 to 36 VDC or 48 VDC 36 to 72 VDC FOM E1 T1 e 115 VAC supply 0 2A T 250V e 230 VAC supply 0 1A T 250V FOM E1 T1 R e 1A 250V and 50 mA 250V 0
32. ption 1 3 Chapter 1 Introduction FOM E1 T1 Installation and Operation Manual Signal Conversion Conversion of the electrical signal into an optical signal takes place by using an infrared light emitting diode or laser transmitter At the opposite end of the fiber the optical signal is converted back into an electrical signal and amplified to the required level Data Clock Recovery To recover data and clock from the signal a Phase Locked Loop PLL circuit is utilized FOM E1 T1 provides internal selection for the E1 T1 electrical interfaces Data Transfer The optical signal is linked to the fiber optic media and transmitted via the optical link to the remote unit A high sensitivity pre amplifier and an AGC Automatic Gain Control circuit enable the remote unit to receive the optical signal The output of the receiver is applied to the clock recovery circuit and the data regeneration circuit which in turn apply it to the electrical interface driving circuit 1 4 Functional Description FOM E1 T1 Installation and Operation Manual E1 T1 Interface Optical Interface Alarm Indicators Chapter 1 Introduction 1 4 Technical Specifications Transmission Rates Interface Zero Suppression Connectors Operating Wavelength Receiver Sensitivity Connectors Dynamic Range Budget Max Operation Connector POWER TEST LOC TEST REM ELECTRICAL LOW ELECTRICAL AIS OPTICAL ERR OPTICAL AIS E1 2 048 Mb
33. rmation refer to the Front Panel Controls and Indicators section in Chapter 3 D PWR TEST O oO OPTICAL ERR AIS O O ELECTRICAL LOW AIS O O LOC NOR REM D 2 m gie E 2 AN x m S FOM E1 T1 O Figure 5 3 FOM E1 T1 R Front Panel FOM E1 T1 R Front Panel FOM E1 T1 Installation and Operation Manual Chapter 5 FOM E1 T1 R Card Version 5 4 Installing the FOM E1 T1 R Card Setting Internal Jumpers and Switches The FOM E1 T1 R internal jumpers and switches are similar in their functionality to those of the standalone unit as detailed Table 5 1 Figure 5 4 illustrates the FOM E1 T1 R PCB layout INPUT GROUNDED F1 FLOATING swi 100 ohm 120 ohm BAL B M Leert SA OUTPUT GROUNDED E FLOATING Sw3 75 ohm AL UNBAL SET Ke TA Figure 5 4 FOM E1 T1 R PCB Layout Installing the FOM E1 T1 R Card 5 5 Chapter 5 FOM E1 T1 R Card Version FOM E1 T1 Installation and Operation Manual Jumper Switch SWA AIS Table 5 1 FOM E1 T1 R Internal Jumpers and Switches Function Possible Settings Factory Setting When a major alarm ON Transmit AIS ON is detected AIS is OFF Do not transmit AIS transmitted to either the electrical or optical interface SW1 INPUT Ground Controls connection CONNECTED BNC shield is connected to SW3 OUTPUT Ground of the BNC shield to the chassis ground the chassis ground for E1 unbalanced
34. rticular purpose RAD shall not be liable for any loss of use interruption of business or indirect special incidental or consequential damages of any kind In spite of the above RAD shall do its best to provide error free software products and shall offer free Software updates during the warranty period under this Agreement RAD s cumulative liability to you or any other party for any loss or damages resulting from any claims demands or actions arising out of or relating to this Agreement and the FOM E1 T1 shall not exceed the sum paid to RAD for the purchase of the FOM E1 T1 In no event shall RAD be liable for any indirect incidental consequential special or exemplary damages or lost profits even if RAD has been advised of the possibility of such damages This Agreement shall be construed and governed in accordance with the laws of the State of Israel General Safety Instructions The following instructions serve as a general guide for the safe installation and operation of telecommunications products Additional instructions if applicable are included inside the manual gt Warning gt B Warning Safety Symbols This symbol may appear on the equipment or in the text It indicates potential safety hazards regarding product operation or maintenance to operator or service personnel Danger of electric shock Avoid any contact with the marked surface while the product is energized or connected to outdoor telecommunicati
35. stalled is in the OFF position or a fuse is blown For DC powered products although the voltages levels are usually not hazardous energy hazards may still exist Before working on equipment connected to power lines or telecommunication lines remove jewelry or any other metallic object that may come into contact with energized parts Unless otherwise specified all products are intended to be grounded during normal use Grounding is provided by connecting the mains plug to a wall socket with a protective earth terminal If an earth lug is provided on the product it should be connected to the protective earth at all times by a wire with a diameter of 18 AWG or wider Rack mounted equipment should be mounted only in earthed racks and cabinets Always make the ground connection first and disconnect it last Do not connect telecommunication cables to ungrounded equipment Make sure that all other cables are disconnected before disconnecting the ground Connection of AC Mains Make sure that the electrical installation complies with local codes Always connect the AC plug to a wall socket with a protective ground The maximum permissible current capability of the branch distribution circuit that supplies power to the product is 16A The circuit breaker in the building installation should have high breaking capacity and must operate at short circuit current exceeding 35A Always connect the power cord first to the equipment and then to the wall so
36. terference Causing Equipment Regulation Cet appareil num rique de la classe A respecte toutes les exigences du R glement sur le mat riel brouilleur du Canada Warning per EN 55022 CISPR 22 Warning This is a class A product In a domestic environment this product may cause radio interference in which case the user will be required to take adequate measures Cet appareil est un appareil de Classe A Dans un environnement r sidentiel cet Avertissement appareil peut provoquer des brouillages radio lectriques Dans ces cas il peut tre demand l utilisateur de prendre les mesures appropri es Dieses ist ein Ger t der Funkst rgrenzwertklasse A In Wohnbereichen k nnen Achtung bei Betrieb dieses Ger tes Rundfunkstr rungen auftreten in welchen Fallen der Benutzer f r entsprechende Gegenma nahmen verantwortlich ist Declaration of Conformity Manufacturer s Name RAD Data Communications Ltd Manufacturer s Address 24 Raoul Wallenberg St Tel Aviv 69719 Israel declares that the product Product Name FOM E1 T1 conforms to the following standard s or other normative document s EMC EN 55022 1994 Limits and methods of measurement of radio disturbance characteristics of information technology equipment EN 50082 1 1992 X Electromagnetic compatibility Generic immunity standards for residential commercial and light industry Safety EN 60950 1992 93 Safety of information technology equipment in
37. the negative pole Switch the circuit breaker back to the ON position A readily accessible disconnect device that is suitably rated and approved should be incorporated in the building installation Connection of Data and Telecommunications Cables Data and telecommunication interfaces are classified according to their safety status The following table lists the status of several standard interfaces If the status of a given port differs from the standard one a notice will be given in the manual Ports Safety Status V 11 V 28 V 35 V 36 RS 530 SELV Safety Extra Low Voltage X 21 10 BaseT 100 BaseT Unbalanced E1 E2 E3 STM DS 2 DS 3 S Interface ISDN Analog voice E amp M Ports which do not present a safety hazard Usually up to 30 VAC or 60 VDC xDSL without feeding voltage TNV 1 Telecommunication Network Voltage 1 panes Bl To Sue MT Ports whose normal operating voltage is within the limits of SELV on which overvoltages from telecommunications networks are possible FXS Foreign Exchange Subscriber TNV 2 Telecommunication Network Voltage 2 Ports whose normal operating voltage exceeds the limits of SELV usually up to 120 VDC or telephone ringing voltages on which overvoltages from telecommunication networks are not possible These ports are not permitted to be directly connected to external telephone and data lines FXO Foreign Exchange Office xDSL TNV 3 Telecommunication Network Voltage 3
38. tion to intra building or non exposed wiring or cabling only In such cases a notice will be given in the installation instructions Do not attempt to tamper with any carrier provided equipment or connection hardware Electromagnetic Compatibility EMC The equipment is designed and approved to comply with the electromagnetic regulations of major regulatory bodies The following instructions may enhance the performance of the equipment and will provide better protection against excessive emission and better immunity against disturbances A good earth connection is essential When installing the equipment in a rack make sure to remove all traces of paint from the mounting points Use suitable lock washers and torque If an external grounding lug is provided connect it to the earth bus using braided wire as short as possible The equipment is designed to comply with EMC requirements when connecting it with unshielded twisted pair UTP cables However the use of shielded wires is always recommended especially for high rate data In some cases when unshielded wires are used ferrite cores should be installed on certain cables In such cases special instructions are provided in the manual Disconnect all wires which are not in permanent use such as cables used for one time configuration The compliance of the equipment with the regulations for conducted emission on the data lines is dependent on the cable quality The emission is tested for U
39. tive Measures PWR LED is No AC power Verify that the power outlet is providing the required power OFF Ensure that both ends of the AC power cord are connected properly Blown fuse Replace with fuse of proper rating ELECTRICAL One of the four wires is Ensure all the wires are connected properly to the DB 15 LOW LED is disconnected from the DB 15 connector ON connector of FOM E1 T1 One of coaxial cables is Ensure that both ends of the coaxial cables are connected disconnected or defective properly and that the cables operate properly The attached equipment Check that the output levels of equipment attached to outputs are not according to FOM E1 T1 comply with G 703 electrical levels G 703 electrical levels The SW1 SW2 switches are Verify that the SW1 SW2 switch positions correspond to the set incorrectly E1 T1 interface type ELECTRICAL The attached equipment is Ensure that the equipment attached to the FOM ET T1 AIS LED is ON transmitting All 1s string transmits real data not all 1s OPTICAL ERR No optical connection Ensure that both transmit and receive fiber connections on LED is ON the local and remote units are connected properly Optical budget is too low Measure the optical loss over the fiber link and verify that it meets the product specifications OPTICAL AIS The equipment attached to Check the remote attached equipment transmission LED is ON the remote unit is transmitting All 1s string The remote u
40. to overcome electrical link distortion FOM E1 T1 then converts the E1 or T1 signals into an optical signal E1 T1 E1 T1 E1 T1 pm eas Coax FOM E1 T1 Fiber Optic FOM E4 T1 Coax PBX DACS Figure 1 1 FOM E1 T1 Application Features Fiber Optic Interface Table 1 1 details fiber optic interface types supported by FOM E1 T1 Table 1 1 Fiber Optic Interface Types Wavelength Fiber Type Transmitter Power Receiver Typical Max Type Sensitivity Range nm um dBm dBm km miles 850 62 5 125 VCSEL 18 38 5 3 multimode 1310 9 125 single LED 18 40 38 24 mode 1310 9 125single Laser 12 40 50 31 mode 1550 9 125single Laser 12 40 100 62 mode E1 T1 Interface e The electrical interface meets requirements of ITU G 703 G 824 G 921 and G 935 standards for E1 and T1 e FOM E1 T1 supports both balanced and unbalanced interfaces e FOM ET T1 conforms to all relevant ITU standards When FOM E1 T1 detects electrical interface levels below G 703 electrical levels the modem transmits an All 1 signal AIS to the optical interface Test and Diagnostics Capabilities e FOM ET T1 s built in diagnostics comply with the V 54 standard e FOM E1 T1 features a dry contact alarm port for attaching an external alert device e When an AIS is detected at the optical or electrical interface the modem transparently converts the signal and alerts the user via front panel LEDs 1 2 Overview FOM E1 T1 Installation and Operation M
Download Pdf Manuals
Related Search