Black Box V.35 256/ST Series Manual
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Black Box V.35 256/ST Series Manual

Black Box V.35 256/ST Series Manual

Single fiber driver
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V.35 Single Fiber Driver 256/ST
V.35 Single Fiber Driver 256/SMA
CUSTOMER
SUPPORT
INFORMATION
P O W
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
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: info@blackbox.com
V . 3 5
R T S
R D
T D
E R
APRIL 1996
ME525A-ST
ME525AE-ST
ME525A-SMA
ME525AE-SMA
r i v e r
b e r D
l e F i
S i n g
T e s t
e s
R e m
M o d
N o r m
L o c a
C D
o t e
a l
l

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  • Page 1 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 2 V.35 SINGLE FIBER DRIVERS TRADEMARKS USED IN THIS MANUAL ST is a registered trademark of AT&T. UL is a registered trademark of Underwriters Laboratories Incorporated. All applied-for and registered trademarks are the property of their respective owners.
  • Page 3 FCC STATEMENT 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 V.35 SINGLE FIBER DRIVERS 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 NOM STATEMENT 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

    V.35 SINGLE FIBER DRIVERS Contents Chapter Page 1. Specifications....................7 2. Introduction .....................8 3. Configuration ....................9 4. Installation......................13 4.1 Single-Fiber Connection .................13 4.2 V.35 Connection..................14 5. Operation .......................15 5.1 LED Status Monitors ................15 5.2 Power-up/Synchronization..............16 5.3 Loopback Test Modes ................17 5.3.1 Local Loopback ................17 5.3.2 Remote Loopback ...............17 5.4 Power-down....................18 Appendix A: Troubleshooting ................19...

  • Page 7: Specifications

    CHAPTER 1: Specifications 1. Specifications Protocol — Synchronous 1.5 miles (2.4 km) at data rates above Range — 64 Kbps and 3 miles (4.8 km) at data rates below 64 Kbps Data Rates — 2.4, 9.6, 14.4, 19.2, 28.8, 38.4, 48, 56, 64, 128, 144, 192, and 256 Kbps Interface —...

  • Page 8: Introduction

    V.35 SINGLE FIBER DRIVERS 2. Introduction The V.35 Single Fiber Drivers are high-speed fiber modems that support full- duplex, point-to-point V.35 communication over a single multimode fiber. Running at synchronous speeds up to 256 Kbps, the V.35 Single Fiber Drivers automatically adapt to hardware or software flow control, and can be set for internal, external, or received recover clocking.

  • Page 9: Configuration

    CHAPTER 3: Configuration 3. Configuration The V.35 Single Fiber Driver uses an eight-switch package that can con- figure a wide range of synchronous applications. Since all eight switches are externally accessible (see the illustrations below), there’s no need to open the Driver’s case for configuration.
  • Page 10 V.35 SINGLE FIBER DRIVERS The eight configuration switches set data rate (distance), sync clock source, and DTE control of the RDL and LAL test modes. The table below shows which switches control each function, and the factory-default settings. Table 3-1. DIP-switch default settings and functions Switch Number Function Factory-Default Setting...
  • Page 11 CHAPTER 3: Configuration Switches S1-1 through S1-4: Data Rate (Distance) Switches S1-1 through S1-4 are set in combination to determine synchronous data rate and maximum distance. Maximum distance is determined by the space between data packets in the communication stream between two V.35 Single Fiber Drivers.
  • Page 12 V.35 SINGLE FIBER DRIVERS S1-5 and S1-6: Clock Source Switches S1-5 and S1-6 are set in combination to determine the source of the transmit clock. S1-5 S1-6 Setting Received Recover Clock Internal Clock External Clock Internal Clock S1-7: DTE Control of RDL The setting for switch S1-7 determines whether DTE control of remote digital loopback test is enabled or disabled.

  • Page 13: Installation

    CHAPTER 4: Installation 4. Installation The V.35 Single Fiber Driver is easy to install. Once you’ve configured the DIP switches (described in Chapter 3), simply connect the single fiber cable, hook up the V.35 interface, and plug the power-supply adapter into the Driver. The illustration below shows the interface connections on the back of the V.35 Single Fiber Driver.

  • Page 14: Connection

    V.35 SINGLE FIBER DRIVERS Alignment pin faces down Figure 4-2. ST and SMA connectors. 4.2 V.35 Connection The V.35 Single Fiber Driver is configured as a DCE. Therefore, it “wants” to connect to DTE hardware such as a PC, host, or terminal, using a straight- through cable.

  • Page 15: Operation

    CHAPTER 5: Operation 5. Operation Once you’ve configured each V.35 Single Fiber Driver and connected the fiber and V.35 cables, you’re ready to operate the units. 5.1 LED Status Monitors The Driver has six front-panel status LEDs that indicate the condition of the modem and communication link.

  • Page 16: Power-Up/Synchronization

    V.35 SINGLE FIBER DRIVERS 5.2 Power-up/Synchronization Apply AC power to the V.35 Single Fiber Driver by plugging the separate AC power adapter first into the rear-panel outlet of the Driver (refer to Figure 4-1 in Chapter 4) and then into the acceptable AC power outlet. There is no power switch on the Driver;...

  • Page 17: Loopback Test Modes

    CHAPTER 5: Operation 5.3 Loopback Test Modes The V.35 Single Fiber Driver offers two loopback test modes to evaluate the condition of the modems and the communication link. These tests are activated from the front panel. 5.3.1 L OCAL OOPBACK The local loopback test checks the operation of the local V.35 Single Fiber Driver, and is performed separately on each unit.

  • Page 18: Power-Down

    V.35 SINGLE FIBER DRIVERS a) Activate remote loopback by moving the front-panel toggle switch up to “Remote.” The “test” LED should glow. b)Perform a BERT (bit error rate) test on the system. c) If the BERT test equipment indicates a fault, and the local loopback test was successful for both V.35 Single Fiber Drivers, there may be a problem with the fiber communication line connecting the modems.

  • Page 19: Appendix A: Troubleshooting

    APPENDIX A: Troubleshooting Appendix A: Troubleshooting Symptom Problem Solution LEDs do not light 1. Loose power connection. 1. Make sure the AC when the AC connection is flush. power transformer is plugged into the 2. Outlet is defective. 2. Try a different outlet. wall.
  • Page 20 V.35 SINGLE FIBER DRIVERS Symptom Problem Solution Data passes, but 1. Incorrect DIP-switch setting. 1. Switch 7 must be in the ON hardware flow position for hardware flow- control doesn’t control signals to pass between work. the Drivers; both units must be set the same way.

  • Page 21: Appendix B: Interface Pin Assignment

    APPENDIX B: Interface Pin Assignment Appendix B: Interface Pin Assignment V.35 Single Fiber Driver—Female M/34 Connector (V.35) Pin Number Signal Frame Ground SGND (Signal Ground) LL (Local Loop) TM (Test Mode) RL (Remote Loop) XTC/...
  • Page 22 © Copyright 1996. 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:

V.35 256/sma seriesMe525ae-smaMe525ae-stMe525a-smaMe525a-st

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