CTP100T COAXIAL TO TWISTED PAIR 10BASE-T MEDIA ADAPTER USER’S MANUAL CABLETRON SYSTEMS, P. O.
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.
TABLE OF CONTENTS CHAPTER 1 INTRODUCTION 1.1 Who Should Use This Manual........................................................ 1-1 1.2 Structure of This Manual ................................................................ 1-2 1.3 An Overview of the CTP100T Adapter........................................... 1-2 1.3.1 Connections ................................................................... 1-3 1.3.2 Distance and Cable Type............................................... 1-4 1.3.
TABLE OF CONTENTS APPENDIX A A.1 A.2 A.3 A.4 A.5 A.6 vi SPECIFICATIONS Interface Connectors................................................................. A-1 System Characteristics ............................................................. A-2 Power Specifications................................................................. A-2 Environmental Specifications .................................................... A-3 Service Specifications ...........................................................
CHAPTER 1 INTRODUCTION Welcome to the Cabletron Systems CTP100T Coaxial to Twisted Pair 10BASE-T Media Adapter User’s Manual. This manual describes the CTP100T adapter and provides the information necessary to install, operate, and troubleshoot it. Also included is information concerning the application of the CTP100T adapter in a network environment. In this manual, thin-net coaxial is also referred to as thin-net.
CHAPTER 1: INTRODUCTION 1.2 Structure of This Manual This manual is organized as follows: Chapter 1, Introduction, provides guidelines about who should use this manual and install the CTP100T adapter, describes the CTP100T adapter and how to apply it in a network environment, provides a list of related user manuals, and provides information about obtaining additional support if needed. Chapter 2, Installation Requirements, contains the network and hardware requirements to install the CTP100T adapter.
An Overview of the CTP100T Adapter ➋ ➌ CTP100T LNK CLN 10BASE-2 TO 10BASE-T ADAPTER WITH LANVIEW RC XMT PW POWER INPUT 10 - 15 V 800 mA MAX 91 SERIES SN ➊ LEFT SIDE VIEW FRONT VIEW ➍ ➎ RIGHT SIDE VIEW 01242-01 ➊ Power Receptacle ➋ RJ45 Port ➌ LANVIEW LEDs ➍ Termination Switch ➎ BNC Port Figure 1-1. CTP100T Adapter 1.3.1 Connections The CTP100T adapter has an RJ45 port and a BNC port. The twisted pair segment is connected to the CTP100T RJ45 port.
CHAPTER 1: INTRODUCTION 1.3.2 Distance and Cable Type The CTP100T adapter supports an unshielded twisted pair (UTP) segment that meets 10BASE-T requirements as described in Chapter 2. An IEEE 802.3, 10BASE-2 compliant thin-net segment of up to 100 meters (330 feet) long can be connected to the CTP100T adapter. This segment can support up to 10 nodes when using 50 ohm, RG-58A/U thin-net coaxial cable. 1.3.
An Overview of the CTP100T Adapter 1.3.5 LANVIEW LEDs The CTP100T adapter has five LANVIEW LEDs that monitor network activity (link, collision present, receive, and transmit) and power status. These LEDs are described in Table 1-1. They serve as a useful tool to quickly diagnose physical layer problems. Table 1-1. LANVIEW LEDs LED DESCRIPTION LNK (green) Link OK – On when a twisted pair link has been established between the CTP100T and the device at the other end of the twisted pair segment.
CHAPTER 1: INTRODUCTION Table 1-1. LANVIEW LEDs (Continued) LED PWR (green) 1.3.6 DESCRIPTION Power – On when the transceiver is receiving power from the external wall transformer. Application The CTP100T adapter can be used with any of Cabletron Systems 10BASE-T compliant products, such as the MMAC Twisted Pair Media Interface Modules (TPMIM 22/24/32/34), the MRXI, and the MiniMMAC. For information on these products, refer to the appropriate installation guides.
An Overview of the CTP100T Adapter This provides the ability to use an existing thin-net coaxial segment, or add a thin-net coaxial segment to an unshielded 10BASE-T twisted pair network in an area where shielded cabling may be needed. . T ➋ ➊ ➌ ➍ ➎ ➏ ➐ T 01242-02 ➊ Coaxial Backbone ➋ AUI Cable ➌ MMAC-3 with TPMIM-22 ➍ Twisted Pair Wire ➎ CTP100T Adapter ➏ Coaxial Segment ➐ PC with Coaxial Interface Figure 1-2.
CHAPTER 1: INTRODUCTION 1.4 Related User Manuals Other Cabletron Systems manuals (not supplied with the CTP100T adapter) that can provide additional information related to the CTP100T adapter, include the following: • • • 1.5 TPT-T 10-BASE-T Twisted Pair Transceiver User’s Manual ST-500 Ethernet /IEEE 802.
CHAPTER 2 INSTALLATION REQUIREMENTS This chapter lists the hardware and network requirements to install the CTP100T adapter on a network segment and the nodes to be attached to it. Note: These requirements along with the specifications described in Appendix A must be met to ensure satisfactory performance of the CTP100T adapter. Otherwise, unsatisfactory network performance may result. 2.
CHAPTER 2: INSTALLATION REQUIREMENTS Insertion Loss - The maximum insertion loss allowed for a 10BASE-T link is 11.5 dB at all frequencies between 5 and 10 MHz. This includes the attenuation of the cables, connectors, patch panels, and reflection losses due to impedance mismatches in the link segment. Impedance - Unshielded twisted pair cables typically have an impedance from 85 to 110 ohms. Shielded cables, such as Type 1 cable, can also be used.
Network Design Guidelines Temperature - Most multi-pair PVC 24 AWG twisted pair cables typically have an attenuation of approximately 8 to 10 dB/100 m (330 feet) at 20°C (68°F). The attenuation of PVC insulated cable varies significantly with temperature. At temperatures greater than 40°C (104°F), it is strongly recommended that you use plenum rated cables to ensure that cable attenuation remains within specification. 2.1.
CHAPTER 2: INSTALLATION REQUIREMENTS • On a thin-net cable segment, the male end of the segment connects to the CTP100T adapter, either directly or via a T-connector. The BNC port has an external switch for selecting the termination. Place the switch in the position to terminate the adapter internally, or in the position when terminating externally. Note: Both ends of a 10BASE-2 thin-net cable segment must have a 50-ohm termination for proper operation.
CHAPTER 3 INSTALLATION This chapter describes how to connect the CTP100T adapter to your network. Ensure that all the requirements and specifications outlined in Chapter 2 and Appendix A are met before installing the CTP100T adapter. 3.1 Unpacking Before installing the CTP100T adapter, unpack and check the contents of the shipping box as follows: 1. Carefully remove the CTP100T adapter, a 12 Vdc 800 mA power supply, and a plastic accessory bag from the shipping box.
CHAPTER 3: INSTALLATION 3.2 Installation If the CTP100T adapter is going to be mounted on a flat surface, proceed to Section 3.2.1. Otherwise, proceed to Section 3.2.2 to install the CTP100T adapter. 3.2.1 Surface Mounting the CTP100T Adapter Using the contents of the accessory package, you can surface mount the CTP100T adapter. The surface you choose should meet the following requirements: • • • • Allows easy access to connect the twisted pair segment to the adapter.
Installation 5. Attach the CTP100T adapter to the Velcro mount. 6. Proceed to Section 3.2.2 to complete the CTP100T adapter installation. 3.2.2 Connecting to the Network If you have mounted the CTP100T adapter as described in Section 3.2.1, proceed to step 2 and note the Caution. Otherwise, proceed to step 1. 1. Select an installation site for the CTP100T adapter that is within 6 feet of a USA standard (NEMA) 3-prong outlet.
CHAPTER 3: INSTALLATION ➒ LNK CLN CTP100T ➊ 10BASE-2 TO 10BASE-T ADAPTER WITH LANVIEW XMT ➋ ➌ ➑ RCV PWR POWER INPUT ➐ 10 - 15 V 800 mA MAX ➏ 91 SERIES SN ➍ ➎ 01242-03 ➊ ➋ ➌ ➍ ➎ Twisted Pair Segment RJ45 Port Power Receptacle Power Cord Power Supply ➏ ➐ ➑ ➒ Thin-net Segment BNC Port Termination Switch CTP100T Adapter Figure 3-1. Installation 4. Plug the power cord ➍ into the power receptacle ➌ located on the side of the CTP100T adapter ➒. 5.
Installation 6. Check that the PWR LED of the CTP100T adapter ➒ is on. This indicates that the unit is receiving power. If the PWR LED is off, perform the following steps until it turns on: 7. a. Ensure that the power supply ➎ is plugged in. b. Ensure that the power cord ➍ is connected to the CTP100T adapter ➒. c. Ensure that the power outlet has power. Check that the LNK LED on the CTP100T adapter is on. This indicates that the link has been made.
CHAPTER 3: INSTALLATION e. Reconnect the RJ45 connector to the RJ45 port ➋. If a link has not been established, contact Cabletron Systems Technical Support. 8. Relieve the strain on all cable connections and the power cord connection using the cable ties shipped with the CTP100T adapter.
CHAPTER 4 TESTING AND TROUBLESHOOTING This chapter contains procedures to check that the RJ45 adapter is properly connected to the network and is functioning properly. Also provided in this chapter, are instructions for using Cabletron Systems LANVIEW LEDs to troubleshoot network problems in the physical layer. 4.1 Installation Checkout This section contains procedures to test the CTP100T adapter after it has been installed to ensure that the physical layer of the network is operating properly.
CHAPTER 4: TESTING AND TROUBLESHOOTING ➊ ➋ ➌ ➍ ➎ ➏ ➐ ➑ ➒ 01242-04 ➊ LAN-MD ➋ AUI Cable ➌ 10BASE-T Twisted Pair Segment (TPT) ➍ Crossed Over Twisted ➎ ➏ ➐ ➑ ➒ CTP100T Adapter Thin-net Coax Segment Thin-net Coax Transceiver AUI Cable LAN-MD Pair Segment Figure 4-1.
Installation Checkout 4. If you have not already attached a thin-net segment ➏ to the BNC port of the CTP100T adapter ➎, do so at this point. Use a T-connector and 50-ohm terminator to terminate the segment if you have set the termination switch in the down position ( ) for external termination. 5. Using an AUI cable ➑, connect another LAN-MD ➒ to any transceiver ➐ connected to the thin-net coaxial segment ➏ off of the CTP100T adapter ➎. 6. On the LAN-MD ➊ connected in Step 1, select 6 - SERVER.
CHAPTER 4: TESTING AND TROUBLESHOOTING 4.2 Using LANVIEW The CTP100T adapter uses Cabletron Systems built-in visual diagnostic and status monitoring system, LANVIEW. LANVIEW LEDs are more effective than a network monitor because networking personnel can quickly scan the LEDs to diagnose network problems and to determine which node or segment is faulty. The following discusses the function and purpose of each CTP100T LANVIEW LED shown in Figure 4-2.
Using LANVIEW Link OK (LNK) LED When this green LED is on, a link has been established between the CTP100T adapter and the device at the other end of the twisted pair segment. This LED remains on as long as the link is maintained. If no data has been sent for 16 ms, a positive link test pulse of 100 ns is sent onto the transmit link of the twisted pair cable. The link pulses are received by the CTP100T adapter and checked to determine if they are occurring at the correct rate, polarity and pulse shape.
CHAPTER 4: TESTING AND TROUBLESHOOTING Collision Present (CLN) LED This red LED flashes when the CTP100T adapter detects a collision condition. The frequency of the flashes may increase as network activity increases, since more collisions are likely to occur. The flash of the LED is pulse-stretched for viewing effect. A solid light indicates a jabber condition. Power (PWR) LED When this green LED is on, the CTP100T adapter is receiving power from the external wall transformer.
APPENDIX A SPECIFICATIONS This appendix provides the specifications for the CTP100T adapter. A.1 Interface Connectors Twisted Pair Interface Internal Transceiver: Cabletron Systems TPT 10BASE-T Twisted Pair Transceiver. Connector Type: RJ45 Pinout Assignment (see Figure A-1). Pin 1 Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 TX+ TXRX+ No Connection No Connection RXNo Connection No Connection 01242-06 Figure A-1.
APPENDIX A: SPECIFICATIONS A termination switch on the CTP100T can be used to provide an internal 50-ohm termination at the BNC receptacle. A.2 System Characteristics Since the CTP100T does not retime data, the operational limits of the CTP100T may be determined by individual system jitter. Some Ethernet products built before 1987 cannot operate when the jitter levels exceed 14 ns. Therefore, the CTP100T may not provide error free operation in all Ethernet environments. A.
Environmental Specifications A.4 Environmental Specifications Non-Operating Temperature: -30°C (-22°F) to +80°C (+176°F) Operating Temperature: 5°C (41°F) to 40°C (104°F) Operation Humidity: 5% to 95% non-condensing Safety The CTP100T adapter meets the safety requirements of: UL1950, CSA C22.2 No. 950, EN60950, and IEC 950. Emissions The CTP100T adapter meets the emission requirements of: EN55022 Class A, FCC Part 15 Class A, and VCCI Class I.
APPENDIX A: SPECIFICATIONS A.6 Physical Specifications CTP100T adapter Height: 8.38 cm (3.3 in) Width: 13.46 cm (5.3 in) Depth: 2.28 cm (0.9 in) Weight: 0.18 kg (0.4 lb) Transformer weight: 0.39 kg (0.85 lb) Shipping weight: 0.86 kg (1.
