FOT-F3 FIBER OPTIC TRANSCEIVER USER’S MANUAL
NOTICE Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice.
FCC NOTICE This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.
VCCI NOTICE This equipment is in the 1st Class Category (information equipment to be used in commercial and/or industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference by Information Technology Equipment (VCCI) aimed at preventing radio interference in commercial and/or industrial areas. Consequently, when used in a residential area or in an adjacent area thereto, radio interference may be caused to radios and TV receivers, etc.
DECLARATION OF CONFORMITY Application of Council Directive(s): Manufacturer’s Name: Manufacturer’s Address: European Representative Name: European Representative Address: Conformance to Directive(s)/Product Standards: Equipment Type/Environment: 89/336/EEC 73/23/EEC Cabletron Systems, Inc. 35 Industrial Way PO Box 5005 Rochester, NH 03867 Mr. J.
CONTENTS CHAPTER 1 INTRODUCTION 1.1 USING THIS MANUAL...............................................................1-1 1.2 CONVENTIONS .........................................................................1-2 1.3 OVERVIEW OF THE FOT-F3 ....................................................1-2 1.3.1 Connections ...............................................................1-3 1.3.2 Distance and Cable Type...........................................1-4 1.3.3 LANVIEW LEDs ..................................
CONTENTS CHAPTER 4 TESTING AND TROUBLESHOOTING 4.1 INSTALLATION CHECK-OUT ...................................................4-1 4.1.1 Testing the Fiber Optic Link Segment........................4-1 4.1.2 Testing the FOT-F3 Fiber Optic Transceiver .............4-3 4.2 USING LANVIEW.......................................................................4-4 APPENDIX A A.1 A.2 A.3 A.4 A.5 A.6 vi SPECIFICATIONS FIBER OPTIC INTERFACE .................................................. A-1 AUI CONNECTOR ....
CHAPTER 1 INTRODUCTION Welcome to Cabletron Systems FOT-F3 Fiber Optic Transceiver User’s Manual. This manual serves as a simple installation and reference guide for the FOT-F3 transceiver. You should have a general working knowledge of Ethernet or IEEE 802.3 type data communications networks and their physical layer components before installing the FOT-F3. 1.1 USING THIS MANUAL You should read through this manual to gain a full understanding of the FOT-F3 and its capabilities.
CHAPTER 1: INTRODUCTION Chapter 4, Testing and Troubleshooting, contains procedures for verifying the proper installation of the FOT-F3. It also describes LANVIEW LEDs and their function. Appendix A, Specifications, provides the specifications for the FOT-F3 transceiver. 1.2 CONVENTIONS The following conventions are used in this manual: • • 1.3 Note — Calls the reader’s attention to any item of information that may be of special importance.
OVERVIEW OF THE FOT-F3 DB15 AUI Port SQE Switch LANVIEW LEDs ST Fiber Optic Ports SQE FOT-F3 P W R S Q E X M T R C V C L N L N K TX 802.3 COMPATIBLE SINGLE MODE FIBER OPTIC TRANSCEIVER with LANVIEW® RX 1300nm SN End View Front View End View 0461-01 Figure 1-1 FOT-F3 1.3.1 Connections The FOT-F3 connects two active Ethernet devices using an AUI cable and a fiber optic link segment.
CHAPTER 1: INTRODUCTION A fiber optic cable is connected to the transceiver through ST fiber optic ports on the FOT-F3. This provides an optical link to connect the device to the network. 1.3.2 Distance and Cable Type The FOT-F3 supports single mode fiber optic cable for sizes such as 8.3/125 µm, 8.7/125 µm, 9/125 µm, and 10/125 µm. You can also use multimode cable such as 62.5/125 µm, but the signal distance will be much shorter.
OVERVIEW OF THE FOT-F3 The SQE test signal is generated after the FOT-F3 has transmitted a data packet. This signal is generated only between the FOT-F3 and the device; it is not transmitted onto the network. Note: Do not enable the SQE test feature when the FOT-F3 is attached to a repeater or Ethernet Version 1 equipment. Otherwise, network problems (excess collisions) will result. 1.3.3 LANVIEW LEDs The FOT-F3 incorporates Cabletron Systems LANVIEW diagnostic and monitoring system.
CHAPTER 1: INTRODUCTION PWR (Power) When on, this green LED indicates that the FOT-F3 is receiving power. SQE (Signal Quality Error) Test Function When on, this yellow LED indicates that SQE is enabled. XMT (Transmit) This green LED flashes to indicate that the FOT-F3 is transmitting frames onto the network. RCV (Receive) This yellow LED flashes to indicate that the FOT-F3 is receiving frames from the network.
OVERVIEW OF THE FOT-F3 1.3.4 Application The FOT-F3 can be configured into your network in many ways. For example, in Figure 1-3, a fiber optic link segment (4) is attached to a Cabletron Systems Multi Media Access Center (MMAC) (5) with a FOMIM-32/36/38. The MMAC serves as an intelligent repeater hub that links the fiber optic link segment to other network segments, regardless of media type. The link segment is attached to the FOT-F3 (3).
CHAPTER 1: INTRODUCTION In another example, shown in Figure 1-4, a FOT-F3 (3) is connected to an MMAC (1) by an AUI cable (2) attached to an Intelligent Repeater Module (IRM) in the MMAC. A lengthy fiber optic link segment (4) of up to five kilometers runs from the FOT-F3 (3) to another FOT-F3 (5). The hardware connection is completed via another AUI cable (6) to a Cabletron Systems NBR-220 Ethernet Bridge (7) configured to provide an AUI interface.
GETTING HELP 1.4 GETTING HELP If you need additional support related to this device, or if you have any questions, comments, or suggestions concerning this manual, contact Cabletron Systems Technical Support: By phone (603) 332-9400 Monday – Friday; 8 A.M. – 8 P.M. Eastern Time By CompuServe GO CTRON from any ! prompt By Internet mail support@ctron.com By FTP Login Password ctron.com (134.141.197.
CHAPTER 1: INTRODUCTION • • 1.5 The device history (i.e., have you returned the device before, is this a recurring problem, etc.) Any previous Return Material Authorization (RMA) numbers RELATED MANUALS Use the manuals identified below to supplement the procedures and other technical data provided in this manual. The procedures contained in these manuals are referenced only.
CHAPTER 2 INSTALLATION REQUIREMENTS Before installing the FOT-F3 Fiber Optic Transceiver, all conditions, guidelines, specifications, and requirements included in this chapter and Appendix A must be met to ensure satisfactory performance from the FOT-F3. Failure to follow these guidelines may result in unsatisfactory network performance. 2.1 NETWORK DESIGN GUIDELINES The following design guidelines must be met when connecting devices using the FOT-F3. 2.1.
CHAPTER 2: INSTALLATION REQUIREMENTS • When determining the maximum fiber optic cable length, the fiber optic budget and total network propagation delay should be calculated and taken into consideration before fiber runs are incorporated into any network design. Fiber optic budget is the combination of the optical loss due to the fiber optic cable, in-line splices, and fiber optic connectors.
CHAPTER 3 INSTALLATION This chapter contains instructions for unpacking the FOT-F3 Transceiver, connecting the FOT-F3 to an Ethernet device and the network, surface mounting the transceiver (if necessary), and cable support installation. Verify that all the requirements listed in Chapter 2, Installation Requirements, and Appendix A, Specifications, are met before installing the transceiver. 3.
CHAPTER 3: INSTALLATION If you notice any discrepancies, contact Cabletron Systems Technical Support immediately. Refer to Chapter 1, Getting Help, for instructions. 3.2 CONNECTING THE FOT-F3 TO THE NETWORK After you are sure that all the requirements listed in Chapter 2, Installation Requirements, and Appendix A, Specifications, have been met, proceed with the installation instructions contained in this section.
CONNECTING THE FOT-F3 TO THE NETWORK SQE SWITCH SQE Enabled SQE Disabled SQE OT-F3 P W R S Q E X M T R C V C L N L N K TX 0461-06 Figure 3-1 SQE Switch 3.2.2 Connecting the AUI Cable To connect your Ethernet device to the FOT-F3, attach an AUI cable as follows. See Figure 3-2. 1. Attach an AUI cable to the device to which the FOT-F3 will be connected.
CHAPTER 3: INSTALLATION 2. Attach the female connector on the AUI cable to the AUI port on the FOT-F3. If the power is on for the Ethernet device, the PWR LED should be lit, indicating the transceiver is receiving power from the device. Also, if the SQE test is enabled, the SQE LED should be lit. SLIDE LATCH AUI Port Slide Latch AUI Connector AUI CONNECTOR 0461-07 Figure 3-2 AUI Connection If the PWR LED is not lit, perform the following steps: 3-4 a.
CONNECTING THE FOT-F3 TO THE NETWORK 3. c. Disconnect the device to which the transceiver is attached. d. Check the AUI connections for proper pinouts. The pinouts for the transceiver connection are listed in Appendix A. e. Check the cable for continuity. f. Reconnect the AUI cable to the FOT-F3 and the device. Move the slide lock on the AUI connector to secure it to the lock posts on the port. 3.2.
CHAPTER 3: INSTALLATION ST connectors attach to ST ports much like BNC connectors attach to BNC ports. See Figure 3-3. The connector is inserted into the port with an alignment key on the connector inserted into the alignment slot on the port. The connector is then turned to lock it down. Caution: Do not touch the ends of the fiber optic strands and do not let ends come in contact with contaminants. Contamination of the ends causes problems in data transmissions.
CONNECTING THE FOT-F3 TO THE NETWORK ST Fiber Optic Ports T X R X Fiber 2 ST Connectors Fiber 1 0461-08 Figure 3-3 ST Connectors 6. Check that the LNK LED on the FOT-F3 is on. If the LED is off, perform each of the following steps until the LED is on: a. Check that the power is on for the device at the other end of the link. b. Verify that the fiber strands are properly connected to each port. c. Reverse the fiber optic cable ends at one end of the fiber optic link segment.
CHAPTER 3: INSTALLATION If a link is not established, contact Cabletron Systems Technical Support. Refer to Chapter 1, Getting Help, for instructions. 3.3 SURFACE MOUNTING THE FOT-F3 Using the contents of the accessory package, you can mount the FOT-F3 on a surface close to the workstation or on the workstation itself. The surface you choose should meet the following requirements: • • • Allows the fiber optic segment to be easily connected to the transceiver.
CABLE SUPPORT INSTALLATION 3.4 CABLE SUPPORT INSTALLATION Relieve the strain from the cables attached to the FOT-F3, whether or not the transceiver is mounted to a surface such as a wall. Note: Be sure each cable is securely attached to its port and that the slide latch on the AUI connector is secured to the lock posts on the AUI port. See Figure 3-2. To provide strain relief to cables connected to a surface mounted FOT-F3, proceed to Section 3.4.1.
CHAPTER 3: INSTALLATION DEVICE Tie Wraps FOT-F3 AUI Cable Cable Mounts Fiber Optic Segment 0461-09 Figure 3-4 Surface Mounting the FOT-F3 3.4.2 Cable Strain Relief for Non-Mounted FOT-F3 To relieve the strain to cables connected to a FOT-F3 that is not surface mounted, proceed as follows: 1. If possible, use long tie wraps to secure the FOT-F3 to a structural support such as a beam or a rafter. 2. Using additional long tie wraps, secure each cable to the same structural support.
CABLE SUPPORT INSTALLATION The FOT-F3 is now ready for operation. We recommend that you test the system prior to transmitting data. Refer to Chapter 4, Testing And Troubleshooting, for information about how to test the system.
CHAPTER 3: INSTALLATION 3-12 FOT-F3 USER’S MANUAL
CHAPTER 4 TESTING AND TROUBLESHOOTING This chapter lists procedures to test the FOT-F3 after it is connected to the network. A description of LANVIEW and its function in troubleshooting physical layer network problems is also provided. 4.1 INSTALLATION CHECK-OUT This section contains procedures to test the following • • The fiber optic link segment to be attached to the FOT-F3. The FOT-F3 after it has been installed to ensure that the physical layer of the network is operating properly. 4.1.
CHAPTER 4: TESTING AND TROUBLESHOOTING 4. Following the instructions for the test set, test the jumpers to get a reference level. Make a note of this reading. 5. Disconnect the jumpers from the barrel connector. 6. Using the jumper, attach the optical power meter to one end of one strand of the link segment. 7. Using the other jumper, attach the other end of the same strand to the optical source unit. 8. Take note of the reading on the optical power meter. This is your test level. 9.
INSTALLATION CHECK-OUT 4.1.2 Testing the FOT-F3 Fiber Optic Transceiver Two Ethernet node testers capable of generating valid data packets, such as the LAN-MD, are required for this procedure. Refer to Figure 4-1 and proceed as follows: 1. Using an AUI cable (2), connect a LAN-MD (1) to the FOT-F3 (3). 1 2 3 4 5 6 1. LAN-MD 2. AUI Cable 3. FOT-F3 4. Fiber Optic Segment 5. FOT-F3 6. AUI Cable 7.
CHAPTER 4: TESTING AND TROUBLESHOOTING 2. Using another AUI cable (6), connect the other LAN-MD (7) to another FOT-F3 (5) attached to the same fiber optic link segment as the FOT-F3. 3. Select and run test 6 - SERVER on the LAN-MD connected in step 1. Verify that this test passes. • • 4. The status on the LAN-MD should read 000 if SQE is enabled or 001 if SQE is disabled. A PASS TEST STATUS LED should also be lit on the LAN-MD.
USING LANVIEW Figure 4-2 shows the location of the LANVIEW LEDs on the FOT-F3. This is followed by a description of how to interpret the indications of these LANVIEW LEDs. SQE FOT-F3 P W R S Q E X M T R C V C L N L N K TX 802.
CHAPTER 4: TESTING AND TROUBLESHOOTING Receive (RCV) LED This yellow LED flashes to indicate that the transceiver is receiving a frame from the network. The flash of the LED is pulse stretched for easy viewing. The LED flashes when traffic is on the network, even if the data is not intended for the device attached to the FOT-F3. Transmit (XMT) LED This green LED flashes to indicate that a frame is being transmitted onto the network by the device connected to the transceiver.
USING LANVIEW Power (PWR) LED When on, this green LED indicates that the transceiver is receiving power from the device connected to the FOT-F3 AUI port. If this LED is off, power is not being received from the device or the DC-to-DC converter in the transceiver has failed.
CHAPTER 4: TESTING AND TROUBLESHOOTING 4-8 FOT-F3 USER’S MANUAL
APPENDIX A SPECIFICATIONS This appendix contains the operational specifications for the FOT-F3. A.1 FIBER OPTIC INTERFACE The FOT-F3 has ST fiber optic ports. Table A-1 lists the parameters along with the associated typical, and minimum/ maximum specifications. Table A-1 Fiber Optic Interface Specifications Parameter Typical Minimum Maximum 1265 nm 1380 nm Transmitter Peak Wave Length: 1310 nm Spectral Width: 95 nm — Rise Time/ Fall Time: 3.0 ns/ 2.5 ns 2.7 ns/ 2.2 ns 5.0 ns/ 5.
APPENDIX A: SPECIFICATIONS Table A-1 Fiber Optic Interface Specifications (Continued) Parameter Receive Sensitivity: Max. Receive Input Power: Typical Minimum Maximum -31.0 dBm -36.0 dBm -30.0 dBm — — -14.0 dBm -15.0 dBm Transmitter Power at 25°C Into 8.3/125 µm fiber: -18.0 dBm -21.0 dBm Output Power Coefficient: -0.07 dB/°C — — Notes: Transmitter Power decreases as temperatures rise and increases as temperatures fall.
AUI CONNECTOR A.2 AUI CONNECTOR The AUI connector is a male DB15 receptacle with a metal shell for cable shielding. Refer to Figure A-1 for pinout identification. Pin 8 Pin 7 Pin 6 Pin 5 Pin 4 Pin 3 Pin 2 Pin 1 Logic Ref. No Connection Power Return Receive + Logic Ref. Transmit + Collision + Logic Ref. Pin Pin Pin Pin Pin Pin Pin 15 14 13 12 11 10 9 No Connection Logic Ref. Power (+12 Vdc) Receive Logic Ref. Transmit Collision 0461-04 Figure A-1 AUI Connector Pinout Identification A.
APPENDIX A: SPECIFICATIONS A.4 ENVIRONMENTAL Table A-3 provides the FOT-F3 environmental specifications. Table A-3 Environmental Specifications Parameter A.5 Specification Operating Temperature: 5° to 55°C Operating Humidity: 5% to 95% (non-condensing) AGENCY APPROVALS Safety The FOT-F3 meets the safety requirements of UL1950, CSA C22.2 No. 950, EN 60950, and 73/23/EEC.
