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Table of Contents
Troubleshooting
Summary of Contents for Radiant Communications FOM-E1
- Page 1 FOM-E1/T1 E1/T1 Fiber Optic Modem Version 2.0 The Access Company...
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Page 3: Installation And Operation Manual
This Agreement is effective upon your opening of the FOM-E1/T1 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. -
Page 4: Limited Warranty
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. -
Page 5: Safety Symbols
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. 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. - Page 6 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 installed) is in the OFF position or a fuse is blown.
- Page 7 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 from the DC circuit. Locate the circuit breaker of the panel board that services the equipment and switch it to the OFF position.
- Page 8 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.
- Page 9 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.
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Page 10: Declaration Of Conformity
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 55022:1998 + Information technology equipment – Radio disturbance A1:2000, A2:2003 characteristics –... -
Page 11: Quick Start Guide
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. -
Page 12: Connecting The Cables
1. Check that SW1 of the DIP switch is set to OFF. 2. Verify LED status. All the LED indicators should be OFF, except for the PWR indicator. 3. If there is an indication of a malfunction or fault, run a diagnostic test. Operating FOM-E1/T1 FOM-E1/T1 Ver. 2.0... -
Page 13: Table Of Contents
Troubleshooting......................4-2 4.3 Testing FOM-E1/T1.....................4-3 Local Loopback (LLB) ....................4-3 Remote Loopback (RLB)..................4-3 4.4 Frequently Asked Questions ..................4-4 4.5 Technical Support ......................4-4 Chapter 5. FOM-E1/T1/R Card Version 5.1 ASM-MN-214 Card Cage .....................5-1 5.2 Power Supply ......................5-2 AC Supply .......................5-2 FOM-E1/T1 Ver. 2.0... - Page 14 DC Supply .......................5-3 Power Supply Redundancy ..................5-3 5.3 FOM-E1/T1/R Front Panel ...................5-4 5.4 Installing the FOM-E1/T1/R Card .................5-5 Setting the Jumpers and Switches ................5-5 Installing FOM-E1/T1/R in the ASM-MN-214 Card Cage..........5-6 Connecting the Interfaces ..................5-6 Appendix A. Pinouts FOM-E1/T1 Ver. 2.0...
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Page 15: Overview
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. -
Page 16: Features
12.4 mode fiber), SF3 Note Fiber optic interfaces that are marked with an asterisk (*) are for the FOM-E1/T1 standalone version only. Typical attenuation for the fiber optic interface units is as follows: • 3.5 dB/km for 62.5/125 μm multimode fiber sat 850 nm •... -
Page 17: Physical Description
Test and Diagnostics Capabilities • FOM-E1/T1 supports local and remote loopback activation. • FOM-E1/T1 features a dry contact alarm port (DB-9) for attaching an external alert device. • 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. -
Page 18: Functional Description
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. -
Page 19: Technical Specifications
OPTICAL AIS ON – An “All 1s” string is received at the optical interface Physical Height 43.7 mm (1.7 in) Width 240 mm (9.4 in) Depth 170.5 mm (6.7 in) Weight 0.5 kg (1.1 lb) FOM-E1/T1 Ver. 2.0 Technical Specifications... - Page 20 100 to 240 VAC, 50 to 60 Hz 8 VA or 48 VDC (48 to 60 VDC) 3W DC Version 24 VDC 4W Fuses FOM-E1/T1/R: 1A 250V and 50 mA 250V Environment Temperature -5°–55°C (23°–131°F) Humidity Up to 90%, non–condensing Technical Specifications FOM-E1/T1 Ver.
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Page 21: Chapter 2. Installation And Setup
Allow at least 10 cm (4 in) clearance at the rear of the unit for 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. -
Page 22: Equipment Needed
• DC adapter connector (for FOM-E1/T1 with 48 VDC option) Equipment Needed FOM-E1/T1 is a standalone device intended for tabletop or bench installation. It is delivered completely assembled. There is no provision for bolting the unit on the tabletop. The only mechanical installation procedure that may be necessary is optional installation in a 19-inch rack or mounting on the wall: •... -
Page 23: Connecting The Interfaces
When a major alarm is detected, AIS is ON – Transmit AIS transmitted to the electrical or optical OFF – Do not transmit AIS interface. Connecting the Interfaces Figure 2-2 illustrates a rear panel of a typical FOM-E1/T1 unit. ELECTRICAL OPTICAL LOOP ENABLE ALARMS UNBAL... -
Page 24: Connecting The E1/T1 Interface
An unbalanced E1 interface terminates 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. Connecting the Alarm Relay... - Page 25 Installation and Operation Manual Chapter 2 Installation and Setup To connect DC power: • Refer to the DC power supply connection supplements for instructions how to wire the DC adapters, and to the Handling Energized Products section. FOM-E1/T1 Ver. 2.0 Connecting to Power...
- Page 26 Chapter 2 Installation and Setup Installation and Operation Manual Connecting to Power FOM-E1/T1 Ver. 2.0...
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Page 27: Chapter 3. Operation
Chapter 2 FOM-E1/T1. Turning FOM-E1/T1 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 unit is connected to the mains. Controls and Indicators During normal operation all indicators should be OFF, except for the PWR indicator. -
Page 28: Turning Off
ON – Bit error rate of the signal received from the optical interface is 10 or worse OPTICAL AIS Yellow ON – Fiber optic interface received "All 1s" string Turning Off To turn FOM-E1/T1 off, disconnect the power cord from the mains. Turning Off FOM-E1/T1 Ver. 2.0... -
Page 29: Chapter 4. Troubleshooting And Diagnostics
The chapter also provides tips on troubleshooting and frequently asked questions. Detecting Errors Front Panel LEDs The front panel LED indicators indicate the status of the FOM-E1/T1. For a Chapter 3 description of LED indicators and their functions, see Alarm Relays FOM-E1/T1 has dry contact alarm relays. -
Page 30: Troubleshooting
Verify that the SW3, SW4 switch positions correspond to the not set correctly E1/T1 interface type. ELECTRICAL The attached equipment is Ensure that the equipment attached to the FOM-E1/T1 is AIS LED is ON transmitting “All 1s" string transmitting real data (not “All 1s"). OPTICAL LOSS No optical connection... -
Page 31: Testing Fom-E1/T1
Also, if the AIS switch is set ON, the AIS is sent to the Figure 4-1 remote unit (see Note FOM-E1/T1/R does not transmit AIS to the remote unit when the LLB is initiated. Position Fiber Optic Electrical... -
Page 32: Frequently Asked Questions
What is the maximum distance between FOM-E1/T1 and end equipment (E1 link)? The FOM-E1/T1 output conforms to the G.703 standard: the coding is bipolar ±3V with the maximum attenuation of -12 dB for E1 and -7 dB for T1. -
Page 33: Chapter 5. Fom-E1/T1/R Card Version
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 or converters in any combination of up to 14 plug-in cards. -
Page 34: Power Supply
Power Supply The FOM-E1/T1/R card is powered from the ASM-MN-214 power supply through the chassis. Each FOM-E1/T1/R card has two fuses that protect the entire system Figure 5-4 against power failure due to a short circuit in one card (see ). -
Page 35: Dc Supply
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. -
Page 36: Fom-E1/T1/R Front Panel
Installation and Operation Manual 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 functionality identical to Front those in the standalone device. -
Page 37: Installing The Fom-E1/T1/R Card
Installation and Operation Manual Chapter 5 FOM-E1/T1/R Card Version Installing the FOM-E1/T1/R Card Setting the Jumpers and Switches Table 5-1 The FOM-E1/T1/R internal jumpers and switches are described in Figure 5-4 illustrates the FOM-E1/T1/R PCB layout. INPUT OUTPUT GROUNDED GROUNDED... -
Page 38: Connecting The Interfaces
4. Tighten the screws on the front panel of the card. Connecting the Interfaces FOM-E1/T1/R uses the ports on the ASM-MN-214 rear panel terminal block for E1/T1 connections. The 25-pin D-type female connector serves as an alarm relay port. -
Page 39: Alarm Relay
Installation and Operation Manual Chapter 5 FOM-E1/T1/R Card Version 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). - Page 40 Chapter 5 FOM-E1/T1/R Card Version Installation and Operation Manual Installing the FOM-E1/T1/R Card FOM-E1/T1 Ver. 2.0...
- Page 41 Table A-2. DB-9 Connector Pinout Contact Alarm Type 2, 6 Normally Closed Minor 1, 6 Normally Open 5, 9 Normally Closed Major 4, 9 Normally Open The relay positions are shown in the non-energized (alarm active) state. FOM-E1/T1 Ver. 2.0 Standalone FOM-E1/T1...
- Page 42 Appendix A Pinouts Installation and Operation Manual FOM-E1/T1 /R Modem Card The 25-pin D-type female connector on the rear panel of the ASM-MN-214 Table A-3 modem rack serves as an alarm relay port. lists the functions of the DB-25 pins.
- Page 43 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 version 2.0 Publication Number: 284-200-09/08 Please grade the manual according to the following factors:...
- Page 45 Error Report Type of error(s) or Incompatibility with product 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 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.
- Page 48 Publication No. 284-200-09/08 International Headquarters 24 Raoul Wallenberg Street Tel Aviv 69719, Israel Tel. 972-3-6458181 Fax 972-3-6498250, 6474436 E-mail market@rad.com North America Headquarters 900 Corporate Drive Mahwah, NJ 07430, USA Tel. 201-5291100 Toll free 1-800-4447234 Fax 201-5295777 E-mail market@radusa.com www.rad.com The Access Company...
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