Black Box ME621A Manual
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Black Box ME621A Manual

Black Box ME621A Manual

Modular fiber campus driver plus-256 kbps/modular fiber campus driver-128 kbps
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Modular Fiber Campus Driver Plus-
Modular Fiber Campus Driver-128 kbps
CUSTOMER
SUPPORT
INFORMATION
256 kbps
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
OCTOBER 1998
ME620A
ME621A

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Summary of Contents for Black Box ME621A

  • 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 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS 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 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS 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 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS 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 aparato.
  • Page 5 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS TRADEMARKS The trademarks mentioned in this manual are the sole property of their owners.

  • Page 6: Table Of Contents

    MODULAR FIBER CAMPUS DRIVER, MFCD PLUS Contents Chapter Page 1. Specifications ........... . 6 2.

  • Page 7: Specifications

    Clocking—Internal, external or derived from receive signal Distance—Up to 3 miles (4.8 km) ME621A Data Rates—Asynchronous: 0 to 19.2 kbps; Synchronous: 4.8, 9.6, 14.4, 19.2, 28.8, 32.0, 56.0, 64.0, 128.0 kbps ME620A Data Rates—Asynchronous: 2.4 to 38.4 kbps; Synchronous: 2.4, 9.6, 14.4, 28.8, 38.4, 56.0, 64.0, 72.0, 128.0, 144.0, 192.0, 256.0 kbps...

  • Page 8: Introduction

    Fiber Campus Drivers, please call Black Box Technical Support at 724-746-5500. 2.2 Features • ME621A: Synchronous data rates: 4.8 to 128 kbps; Asynchronous data rates: 0 to 19.2 kbps • ME620A: Synchronous data rates: 2.4 to 256 kbps; Asynchronous data rates: 0 to 38.4 kbps...
  • Page 9 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS • V.54-compliant local and remote digital loopback tests • 8 front-panel LED status indicators • Available with ST fiber connectors • Made in the U.S.A.

  • Page 10: Configuration

    MODULAR FIBER CAMPUS DRIVER, MFCD PLUS 3. Configuration Both Models ME621A and ME620A use a mini DIP-switch package that allows configuration to a wide range of applications. These switches are located on the bottom side of the PC board (see Figure 3-1). Because all eight switches are externally accessible, you don’t have to open the case to configure the unit.
  • Page 11 S1-8 DTE Control of LAL Disabled *NOTE Both models ME621A and ME620A use Switches S1-S4 to set the async or sync data rate. Refer to the sections below to set the ME621A or ME620A rates. S1-1 S1-4 (M ME621A:): A...
  • Page 12 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS S1-1 S1-4 (M ME620A): A WITCH THROUGH ODEL SYNC On Model ME620A, Switches S1-1, S1-2, S1-3 and S1-4 set two parameters: synchronous or asynchronous data rate and the maximum transmission distance between two Model ME620As. Data Max Distance S1-1...
  • Page 13 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS NOTE Because communication between two Model ME620As is always synchronous, you must set these switches whether your application is async or sync. For X.21 or async applications, configure one unit for internal clock mode and the other for receive recover clock mode. S1-7: DTE C WITCH ONTROL OF...

  • Page 14: Installation

    MODULAR FIBER CAMPUS DRIVER, MFCD PLUS 4. Installation Once the ME621A or ME620A is properly configured, it is ready to connect to the fiber interface, to the serial port, and to the power source. This section tells you how to make these connections.

  • Page 15: Connection To The Serial Port

    HANGING ODULES When you purchase a particular version of the ME621A or ME620A, it should be shipped to you without any modules installed. The modules mentioned on page 7 are ordered separately. If you need to install one of these Modules, follow these...

  • Page 16: Connection To A "Dte" Device

    Appendix as a guide. NOTE Pin-out requirements for null-modem applications vary widely between manufacturers. If you have any questions about a specific application, contact Black Box Technical Support at 724-746-5500.

  • Page 17: Re-Configuring The X.21 Module

    MODULAR FIBER CAMPUS DRIVER, MFCD PLUS 4.2.4 R X.21 M CONFIGURING THE ODULE The serial port on the X.21 Module is wired by default as a DCE, but may be switched to a DTE. This is done by reversing the orientation of the DCE/DTE strap.

  • Page 18: Operation

    MODULAR FIBER CAMPUS DRIVER, MFCD PLUS 5. Operation Once the Campus Driver is properly configured and installed, it should operate transparently. This section describes power-up, reading the LED status monitors, and using the built-in loopback tests. 5.1 Power-Up To apply power to the Campus Driver, first be sure that you have read Section 4.3, and that the unit is connected to the appropriate power source.

  • Page 19: Diagnostics

    During the 511 or 511/E test, ER will flash to indicate that the Test Pattern Detector has detected a bit error. TM: Glows red to indicate that the ME620A or ME621A has been placed in Test Mode. The unit can be placed in test mode by the local or remote user.

  • Page 20: Remote Analog Loopback

    MODULAR FIBER CAMPUS DRIVER, MFCD PLUS NOTE Although the local Campus Driver cannot communicate with the remote Campus Driver in this mode, the synchronized connection between the two modems remains intact. 2. Verify that the data terminal equipment is operating properly and can be used for a test.
  • Page 21 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS 3. If the BER test equipment indicates a fault and the Local Analog Loopback test was successful for both Campus Drivers, you may have a problem with the line between the units. You should inspect the line for proper connections.

  • Page 22: Appendix: Interface Pin Assignments

    MODULAR FIBER CAMPUS DRIVER, MFCD PLUS Appendix: Interface Pin Assignments V.35 Interface Pin Description, M/34 Female Connector Pin # Signal SGND (Signal Ground) RTS (Request to Send) CTS (Clear to Send) DSR (Data Set Ready) CD (Carrier Detect) DTR (Data Transfer Ready) LLB (Local Line Loop) TM (Test Mode) DL (Remote Digital Loop)
  • Page 23 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS RS-232, RS-530 Interface Pin Description (DB25 Female Connector) Pin # Signal FG (Frame Ground) TD (Transmit Data) RD (Receive Data) RTS (Request to Send) CTS (Clear to Send) DSR (Data Set Ready) SGND (Signal Ground) CD (Carrier Detect) RC/ (Receive Timing-B) CD/ (Carrier Detect-B)
  • Page 24 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS X.21 Interface Pin Description (DB15 Female Connector) Pin # Signal Frame Ground T (Transmit Data-A) C (Control-A) R (Receive Data-A) I (Indication-A) S (Signal Element Timing-A) BT (Byte Timing-A) SGND (Signal Ground) T/ (Transmit Data-B) C/ (Control-B) R/ (Receive Data-B) I/ (Indication-B)
  • Page 25 MODULAR FIBER CAMPUS DRIVER, MFCD PLUS G.703 Interface Pin Assignment (RJ-45 8-Pin Modular) Pin # Signal RD+ (Receive Data Tip) RD- (Receive Data Ring) Not Used TD- (Transmit Data Ring) TD+ (Transmit Data Tip) Not Used Not Used Not Used...
  • Page 26 © Copyright 1998. Black Box Corporation. All rights reserved. 1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746...

This manual is also suitable for:

Me620a

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