Black Box LT0010A Manual
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Black Box LT0010A Manual

Black Box LT0010A Manual

4/16 tr repeater (copper)
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© Copyright 1998. Black Box Corporation. All rights reserved.
1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746

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  • Page 1 © Copyright 1998. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...
  • Page 2 Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 SUPPORT Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 3 4/16 TR REPEATER (COPPER) FEDERAL COMMUNICATIONS COMMISSION INDUSTRY CANADA RADIO FREQUENCY INTERFERENCE STATEMENTS This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication. It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules, which are designed to provide reasonable protection...
  • Page 4 4/16 TR REPEATER (COPPER) NORMAS OFICIALES MEXICANAS (NOM) ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD 1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado. 2. Las instrucciones de seguridad y operación deberán ser guardadas para referencia futura.
  • Page 5 4/16 TR REPEATER (COPPER) 11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo descrito en el instructivo de operación, o como se indique en el aparato. 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada.

  • Page 6: Table Of Contents

    4/16 TR REPEATER (COPPER) Contents Chapter Page 1. Specifications....................5 2. Introduction .....................6 2.1 Main Ring Applications ................6 2.2 Auto Loopback Fault Tolerance ..............8 2.3 Lobe Applications..................9 3. Hardware ......................10 3.1 RI and RO Ports..................11 3.2 D E Switches (Auto Loopback)..............11 3.3 4-16 Switch....................11 3.4 Connectors ....................12 3.4.1 RJ-45 Connectors ................12...

  • Page 7: Specifications

    CHAPTER 1: Specifications 1. Specifications Standards — IEEE 802.5 Indicators — (5) LEDs: Power, RI Loopback, RO Loopback, Data, Station Connectors — (2) RJ-45 female, (2) data connectors Fuse — 1/2 Amp, 250 V slo-blo Power — Universal 115-230 VAC, 50-60 Hz power supply Size —...

  • Page 8: Introduction

    4/16 TR REPEATER (COPPER) 2. Introduction 2.1 Main Ring Applications The 4/16 TR Repeater (Copper) lets you expand the geographic For maximum distances, the distance of a Token Ring network, Repeaters must be used in pairs. using either inexpensive Type 3 A 4/16 TR Repeater (Copper) (unshielded twisted pair) cable regenerates the signals of both...
  • Page 9 CHAPTER 2: Introduction Segment 1 Segment 3 Segment 2 1200 feet maximum 1200 1200 feet feet maximum maximum between between repeaters repeaters Segment 4 1200 feet maximum R=Repeater Fig. 2-2. Typical Token Ring Network With Repeaters. The repeaters have divided the network into four segments.

  • Page 10: Auto Loopback Fault Tolerance

    4/16 TR REPEATER (COPPER) 2.2 Auto Loopback Fault Tolerance If cable A, B, or C in Fig. 2-3 breaks, the devices on either side of the cable would wrap the network signal to the backup path, thereby allowing the network to continue operation. Conventional repeaters would not provide this level of fault tolerance.

  • Page 11: Lobe Applications

    CHAPTER 2: Introduction 2.3 Lobe Applications You can use the Repeaters to extend the length of individual station lobes. Extending an individual lobe can be more economical than extending the main ring. In the top example in Fig. 2-4, the main ring has been extended using a MAU and two repeaters.

  • Page 12: Hardware

    4/16 TR REPEATER (COPPER) 3. Hardware The front view of the 4/16 TR Repeater (Copper) is shown in Fig. 3-1. LOOPBACK POWER 4-16 DATA Fig. 3-1. Front View of the 4/16 TR Repeater (Copper).

  • Page 13: Ri And Ro Ports

    CHAPTER 3: Hardware 3.1 RI and RO Ports The slide switch should be in the E (enabled) position when The 4/16 TR Repeater (Copper) the Repeater’s RI or RO port is has two RJ-45 connectors and two connected to the RI or RO port data connectors on the front panel of another device that supports its labeled RI and RO.

  • Page 14: Connectors

    4/16 TR REPEATER (COPPER) NOTE If the repeaters will be used between a MAU controller The unshielded twisted-pair and a MAU satellite MAU, cable used with two extra conductors (one Repeaters must have at least extra twisted pair) must also two twisted pairs of wire.

  • Page 15: Connectors

    CHAPTER 3: Hardware 3.4 Connectors 3.4.1 RJ-45 C ONNECTORS Fig. 3-2 shows the transmit and receive pin in the female RJ-45 connectors on the Repeater front panels. MAUi/85xx Communications Transmit Transmit Receive Receive Pins Pins Pins Pins Ring in Connector Ring Out Connector Fig.
  • Page 16 4/16 TR REPEATER (COPPER) Use With Satellite MAUs If a Repeater will be used between a MAU controller and a satellite MAU, two extra conductors must be provided in the cable and connectors to carry off-LAN communication between the MAU devices. RJ-45 male connectors must be used (not RJ-11 male connectors).

  • Page 17: Data Connectors

    CHAPTER 3: Hardware 3.4.2 D ONNECTORS Fig. 3-5 shows the transmit and receive pins of the data connectors on the front panel of the Repeater. R = receive, T = transmit (black) (black) (orange) (orange) (green) (green) (red) (red) RI Connector RO Connector Fig.

  • Page 18: Leds

    4/16 TR REPEATER (COPPER) 3.5 LEDs RI Loopback — If the automatic loopback circuit is enabled for the This section covers LED functions RI port (this is controlled by the for the repeater. Fig. 3-1 illustrates D E switch for that port), a fault the LEDs.
  • Page 19 CHAPTER 3: Hardware RO Loopback — If the automatic The Station LED (green) lights loopback circuit is enabled for the only when the repeater is used on RO port (this is controlled by the a station lobe. The difference bet- D E switch for that port), a fault ween the signal on the main ring condition on the Ring Out side will...

  • Page 20: Installation

    4/16 TR REPEATER (COPPER) 4. Installation The maximum number of 4.1 Installation on the Main Ring attaching devices on a single ring This section contains installation using Category 5 or Type 3 cable is procedures for the following: 72, minus the number of repeaters. The maximum number of attaching •...
  • Page 21 CHAPTER 4: Installation Planning a Non-Mixed Network a. Determine the length of the longest lobe attached to the 1. Place the first repeater at the segment. input to the wiring closet that b. Determine the length of the contains the largest number cable between each repeater of MAUs.
  • Page 22 4/16 TR REPEATER (COPPER) Sample Segment 500 ft. 100 ft. 100 ft. 150 ft. From Repeater Repeater fiber fiber segment segment Drive distance = 650 ft. (150 + 500) Fig. 4-1. Situation 1.
  • Page 23 CHAPTER 4: Installation Situation 2: The longest lobe is between the repeaters and their shorter than one or both of the nearest MAU plus the length of cables between the repeaters and all cables between the first and last the nearest MAU. MAU in the segment.
  • Page 24 4/16 TR REPEATER (COPPER) Situation 3: There are no MAUs in the ring segment. The maximum drive distances between repeaters are listed in Section 4.3, Distance Charts. A maximum of five repeaters may be placed in a row on the same line with no MAUs in between them.

  • Page 25: Mixed Network

    CHAPTER 4: Installation 4.1.3 M 2. Determine the length of the IXED ETWORK cable between each repeater A mixed network is one that and its closest MAU. It uses both passive and extended- doesn’t matter whether the distance MAUs. This type of closest MAU is passive or configuration requires different extended-distance.
  • Page 26 4/16 TR REPEATER (COPPER) Situation 2: The longest lobe is shorter than one or both of the cables between the repeaters and the nearest MAU. The drive distance is the sum of the longer of the two cable lengths between the repeaters and their nearest MAU plus the length of all cables between the first and last MAU in the...

  • Page 27: Using Automatic Loopback With The 4/16 Tr Repeater (Copper)

    CHAPTER 4: Installation 3. To find the maximum allowable 4.1.4 U SING UTOMATIC OOPBACK lobe length for the extended 4/16 TR R WITH THE EPEATER OPPER distance MAUs, subtract the The 4/16 TR Repeater (Copper) drive distance just calculated incorporates an automatic loopback from the maximum distance for feature.

  • Page 28: Special Applications

    4/16 TR REPEATER (COPPER) Conventional Token Ring Repeater This link can be fault-tolerant Conventional Token Ring Repeater Fig. 4-6. Automatic Loopback Between two 4/16 TR Repeaters. NOTE 4.1.5 S PECIAL PPLICATIONS A small number of applications may If this type of ring is require a non-redundant main ring configured, remember that configuration, which is a configu-...
  • Page 29 CHAPTER 4: Installation 4000 ft. Extended Nonpowered Distance 1100 ft. 1200 ft. 1100 ft. Terminating Plug Nonpowered (RJ45 models R = Repeater only) Terminating Plug 150 ft. (RJ45 models Lobe only) Fig. 4-7. Non-Redundant Example of a Main Ring. Terminating Plug On some earlier RJ-45-equipped MAUs, a terminating plug (also called a wrap plug) is required when...

  • Page 30: Completing The Main Ring Installation

    4/16 TR REPEATER (COPPER) R = Receive T = Transmit T R R T R T T R RI/MAU RO/Station Fig. 4-8. MAU Terminating Plug Function. 1. Make sure the D E and 4/16 Data connector-equipped MAUs switches for the 4/16 TR do not require terminating plugs.
  • Page 31 CHAPTER 4: Installation 2b. If the network is already 3. The installation is complete. operating, the repeaters may be During normal main ring installed by attaching Ring In operation, a Repeater’s Power and Ring Out cables to the LED will be on, its Data LED will appropriate connectors, as long be green, and its Station LED as the ring is not broken for...

  • Page 32: Distance Charts

    4/16 TR REPEATER (COPPER) 4.3 Distance Charts The distance charts are used with the installation procedures earlier in this chapter. Table 4-1. 4/16 TR Repeater (Copper) at 4 Mbps. Cable Type Distance in Feet (Meters) Category 5 2250 (685.8) Type 3 1200 (365.8) Type 1, 2 2400 (731.5)

  • Page 33: Installation On A Lobe

    CHAPTER 4: Installation 4.4 Installation on a Lobe A maximum of eight repeaters may be used on a single ring. 4.4.1 P LANNING THE NSTALLATION The repeaters may be either rack- mounted, wall-mounted, or placed A floor plan of the area in which on a shelf or table.

  • Page 34: Completing The Lobe Installation

    4/16 TR REPEATER (COPPER) 4.4.2 C 6. The installation is complete. OMPLETING THE NSTALLATION During normal lobe operation, a 1. Make sure the D E switches are 4/16 TR Repeater’s Power LED will set in the D (disabled) position, be on, its Data LED will be green, and that the 4/16 switches are and its Loopback LEDs will be off.

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