Black Box Async MP Line Driver Card Manual
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Black Box Async MP Line Driver Card Manual

Black Box Async MP Line Driver Card Manual

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Async MP Line Driver Card
CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
JANUARY 1999
ME931C-RJ11
P o w e r
T D
R D
C n t r l
I n
C n t r l
O u t
T e s t

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  • Page 1 Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) SUPPORT FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 INFORMATION Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 Web site: www.blackbox.com • E-mail: info@blackbox.com...
  • Page 2 ASYNC MP LINE DRIVER CARD FEDERAL COMMUNICATIONS COMMISSION CANADIAN DEPARTMENT OF COMMUNICATIONS 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.
  • Page 3 ASYNC MP LINE DRIVER CARD 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 4 ASYNC MP LINE DRIVER CARD 12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización del equipo no sea eliminada. 13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del...
  • Page 5 ASYNC MP LINE DRIVER CARD TRADEMARKS Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

  • Page 6: Table Of Contents

    ASYNC MP LINE DRIVER CARD Contents Chapter Page 1. Specifications ........... . . 6 2.

  • Page 7: Specifications

    ASYNC MP LINE DRIVER CARD 1. Specifications Transmission Format—Asynchronous External Interface—RS-232C/CCITT V.24 connection via DB25 female; twisted-pair connection via RJ-11 Internal Interface—Connection to the rack chassis (part number RM202, RM204, RM208, or RM216) via 50-pin male card edge Transmission Line—4-wire, unconditioned twisted-pair, 19–26 AWG, 20 pF/ft. or better Data Rates—0 to 57.6 kbps...

  • Page 8: Introduction

    2. Introduction 2.1 Description The Async MP Line Driver Card operates full duplex over two unconditioned twisted pair wires. Supporting data rates to 57.6 kbps, the Card has a maximum range of 14 miles (22.5 km) (at 1200 bps over 19 AWG wire). It passes one control signal in each direction, and features both optical isolation and Silicon Avalanche Diode surge protection on the data line side.

  • Page 9: Configuration

    (see Figure 3-1). Once configured, the Card is designed to operate transparently, without frequent reconfiguration. Figure 3-1. Async MP Line Driver Card. 3.1 Switch Locations and Orientation The eight DIP switches on the Card allow you to specify control-signal pin assignments and carrier-control method.

  • Page 10: Quick Setup Instructions

    3.2 Quick Setup Instructions For most applications, you will not need an in-depth knowledge of the Card’s capabilities to get up and running. The following quick-setup DIP-switch configurations cover most Async MP Line Driver Card operating environments. 3.2.1 P OINT...

  • Page 11: Special Configuration

    *Multiple input pins are “or-tied”—if any input goes low, carrier is dropped 3.4 Rear Card Configuration The Async MP Line Driver Card comes with an interface card with DB-25/RJ-11 connectors. It supports one RS-232 connection and one 4-wire connection (the RS-232 port is the lower port on the interface card).
  • Page 12 ASYNC MP LINE DRIVER CARD Figure 3-3. Interface Card. Before installation, you will need to examine the rear card and make sure that it is configured properly for your application. You can configure each rear card by setting straps on the PC board. Sections 3.4.1 and 3.4.2 describe the strap locations and possible settings for each rear card.
  • Page 13 ASYNC MP LINE DRIVER CARD Table 3-2 provides an overview of strap functions for the DB25/RJ-11 card. Following this overview is a detailed description of each strap’s function. Table 3-2. DB25/Modular Interface Card Strap Summary. Strap Function Position 1 and 2 Position 2 and 3 Line Shield &...

  • Page 14: Installation

    ASYNC MP LINE DRIVER CARD 4. Installation This section describes the functions of the Rack Chassis (part number RM216), tells how to install front and rear cards into the chassis, and provides diagrams for wiring the interface connections correctly. 4.1 The Rack Chassis The Rack Chassis (shown in Figure 4-1) has sixteen short-range modem card slots, plus its own power supply.

  • Page 15: Installing The Card Into The Chassis

    ASYNC MP LINE DRIVER CARD Replacing the Power Supply Fuse The Rack Chassis power supply uses a 400 mA fuse for 120-volt AC circuits, and a 200 mA fuse for 240-volt AC circuits. The fuse compartment is located just below the AC socket on the rear card.

  • Page 16: Wiring The Card

    4.3.2 T WISTED ONNECTION The Async MP Line Driver Card operates over two twisted pairs. In all applications, the twisted-pair wire must be 26 AWG or thicker, unconditioned, dry, metallic wire. Both shielded and unshielded wire yield favorable results.
  • Page 17 Appendix A. Point-to-Point Twisted-Pair Connection The 6-position RJ-11 jack for the Async MP Line Driver Card is prewired for a standard telco wiring environment. To connect a 4-wire twisted-pair circuit between two or more Cards, you’ll need a crossover cable as shown in Tables 4-1 and 4-2 and Figure 4-2.
  • Page 18 - - - - - - - - - - - - - - - - - - - - - - - - - - XMT Figure 4-3. Two-Pair Star Wiring for Async MP Line Driver Card Host and...

  • Page 19: Operation

    ASYNC MP LINE DRIVER CARD 5. Operation Once you have configured each Async MP Line Driver Card and connected the cables, you are ready to operate the units. This Chapter describes the LED status monitors, the power-up procedure and the built-in loopback test modes.

  • Page 20: Power-On

    • The green TEST LED will glow when the loopback test modes are activated. 5.2 Power-On There is no power switch on the Async MP Line Driver Card: Power is automatically applied to the Card when its card-edge connector makes contact with the chassis’...

  • Page 21: Remote Analog Loop

    Card in loopback mode is working. NOTE Only one Async MP Line Driver Card should be in test mode. The other Card should be in “normal” operating mode or the test will not work.

  • Page 22: Appendix A: Recommended Cable

    ASYNC MP LINE DRIVER CARD Appendix A: Recommended Cable The Async MP Line Driver Card operates at frequencies of 100 kHz. We’ve performance-tested it using twisted-pair cable with the following characteristics described in Table A-1. Table A-1. Cable Characteristics. Wire Gauge...
  • Page 23 ASYNC MP LINE DRIVER CARD • Environmental factors too numerous to mention can affect the maximum distances you can obtain at a particular site. Use the data rate/distances described in Table A-2 as a general guideline only.

  • Page 24: Appendix B: Interface Standards

    ASYNC MP LINE DRIVER CARD Appendix B: Interface Standards Direction Standard RS-232C/V.24 DCE Setting Direction 1 - (FG) Frame Ground 2 - (TD) Transmit Data To Card 3 - (RD) Receive Data From Card 4 - (RTS) Request to Send...

  • Page 25: Appendix C: Block Diagram

    ASYNC MP LINE DRIVER CARD Appendix C: Block Diagram Figure C-1. Block Diagram.
  • Page 26 © Copyright 1999. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

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