Black Box IC945A Manual
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Black Box IC945A Manual

Black Box IC945A Manual

V.35 - hssi interface converters
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V.35↔HSSI Interface Converters
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
I
o H S S
V . 3 5 t
r t e r
o n v e
a c e C
I n t e r f
MAY 1998
IC945A
IC946A

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Summary of Contents for Black Box IC945A

  • 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 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 B of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference when the equipment is...
  • Page 3 V.35↔HSSI INTERFACE CONVERTERS 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 NOM STATEMENT 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 V.35↔HSSI INTERFACE CONVERTERS CE Notice The CE symbol on this equipment indicates that it is in compliance with the Electromagnetic Compatibility (EMC) directive and the Low Voltage Directive (LVD) of the Union European (EU). TRADEMARKS USED IN THIS MANUAL Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

  • Page 6: Table Of Contents

    2. Introduction ....................7 2.1 Description .....................7 2.2 Features ....................7 3. Configuration ....................8 3.1 Configuration Switches in the IC946A ..........9 3.2 Configuration Switches in the IC945A ..........12 4. Installation....................15 4.1 IC946A ....................15 4.2 IC945A ....................15 4.3 AC Power Connection .................16 4.4 DC Power Connection .................16 5.

  • Page 7: Specifications

    Data Rate— Up to 10 Mbps Protocol— Synchronous Standards— CCITT V.35; HSSI (ANSI/TIA/EIA-613) Interfaces— IC945A: Connects V.35 (DCE) to HSSI (DTE); IC946A: Connects V.35 (DTE) to HSSI (DCE) Connectors— (1) HD50 Slimline male; (1) M/34 male Loopbacks— Local and Remote Clocking—...

  • Page 8: Introduction

    (local and remote line), full-duplex data, and control signals. The Converter is available in two versions. The Model IC946A lets a V.35 DTE device communicate with an HSSI DCE device. The IC945A lets a V.35 DCE device communicate with an HSSI DTE device.

  • Page 9: Configuration

    After opening the case, please refer to Section 3.1 if you purchased the IC946A and Section 3.2 if you purchased the IC945A. To close the case, fit the 2 halves together snugly and snap them back in...

  • Page 10: Configuration Switches In The Ic946A

    CHAPTER 3: Configuration 3.1 Configuration Switches in the IC946A The IC946A uses a mini DIP switch that may be used to configure the unit to connect synchronous V.35 DTE equipment to synchronous HSSI DCE equipment. Each interface converter is factory-configured as DCE on the V.35 end, and DTE on the HSSI end.
  • Page 11 V.35↔HSSI INTERFACE CONVERTERS Figure 3-3 shows the orientation of the switches on DIP Switch S1 with respect to ON/OFF positions. The default settings for DIP Switch S1 are shown in Table 3-1. Detailed descriptions of each switch follow the table. Figure 3-3.
  • Page 12 CHAPTER 3: Configuration Switches S1-1 and S1-2: Clock Source The setting for Switches S1-1 and S1-2 determines the source of the HSSI Terminal Timing (TT). With Switch S1-1 On and S1-2 Off, the IC946A derives the HSSI Terminal Timing from the ST signal provided by the HSSI DCE. With Switch S1-1 Off, and S1-2 On, the V.35 DTE provides TT to the HSSI DCE.

  • Page 13: Configuration Switches In The Ic945A

    V.35↔HSSI INTERFACE CONVERTERS 3.2 Configuration Switches in the IC945A The IC945A uses a mini DIP switch that may be used to configure the unit to connect synchronous V.35 DCE equipment to synchronous HSSI DTE equipment. Each interface converter is factory-configured as DTE on the V.35 end, and DCE on the HSSI end.
  • Page 14 Gapped clocking is a method of flow control in which data flow is interrupted by an idle (gapped) clock signal. In this mode, the IC945A will gap the ST clock to the HSSI DTE whenever the V.35 CTS signal is de-asserted. In the “No Gapped Clock”...
  • Page 15 V.35↔HSSI INTERFACE CONVERTERS Switches S1-3 and S1-4: Synchronization Method Switches S1-3 and S1-4 allow the IC945A to compensate for timing delays when transmitting HSSI data at high speeds (greater than 2.5 Mbps). At high bit rates, set Switch S1-3 On and Switch S1-4 Off. In this setting, the V.35 data signals will be synchronized to the SD timing signal before conversion to HSSI.

  • Page 16: Installation

    Figure 4-1. A common V.35 DTE to HSSI DCE installation. 4.2 IC945A The IC945A is designed to connect a V.35 DCE device to an HSSI DTE device. In this application, the M/34 (V.35) and HD50 (HSSI) male connectors of the IC945A may connect directly to their respective equipment ports, or they may connect via a short “straight-through”...

  • Page 17: Ac Power Connection

    V.35↔HSSI INTERFACE CONVERTERS Router with HSSI T1/T3 DSU with V.35 Interface (DTE) Interface (DCE) Figure 4-2. A common HSSI DTE to V.35 DCE installation. 4.3 AC Power Connection The V.35↔HSSI Interface Converter uses a 5-VDC, 2A universal-input power supply that is equipped with a male IEC-320 power-entry connector and supports a voltage range of 100 to 240 VAC.

  • Page 18: Operation

    CHAPTER 5: Operation 5. Operation Once you’ve configured the Converter properly (Chapter 3) and have correctly connected DTE, DCE, and power (Chapter 4), you’re ready to operate the Converter. 5.1 Back-Panel LEDs The Converter has two LEDs on the back panel (see Figure 5-1). HSSI Cable External Power Jack Test Mode LED...

  • Page 19: Test Modes

    V.35↔HSSI INTERFACE CONVERTERS 5.2 Test Modes The V.35↔HSSI Interface Converter supports two loopback modes that may be used to evaluate the condition of the communication links. These modes, Local Loopback (LL) and Remote Loopback (RL), are always initiated by the signals on the DTE device (see Figure 5-2).

  • Page 20: Local Loopback (Ll)

    CHAPTER 5: Operation 5.2.1 L (LL) OCAL OOPBACK The Local Loopback (LL) test checks the performance of the link between the DTE device and the DCE. Any data sent to the Converter from the DTE in this test mode will be sent to the local DCE and will then be echoed (returned) back to the DTE (the Converter simply converts and passes the data to the the local DCE, which must perform the loopback).
  • Page 21 V.35↔HSSI INTERFACE CONVERTERS If the BER test equipment indicates a fault, and the Local Loopback test was successful, you may have a problem with the cable between the DCE devices. NOTE The V.35↔HSSI Interface Converter simply converts and passes the data through the communication link.

  • Page 22: Appendix A: Pinouts

    APPENDIX A: Pinouts Appendix A: Pinouts HSSI Interface HD-50 Connector (DCE or DTE) Pin # Signal SGND (Signal Ground) SGND (Signal Ground) RT (Receive Timing-A) RT/ (Receive Timing-B) DSR/(DCE Ready-A) DSR (DCE Ready-B) RD (Receive Data-A) RD/ (Receive Data-B) Reserved for Future Use Reserved for Future Use ST (Send Timing-A, DCE Source) ST/ (Send Timing-B, DCE Source)
  • Page 23 V.35↔HSSI INTERFACE CONVERTERS HSSI Interface (continued) Pin # Signal 39–43 Reserved for Future Use Reserved for Future Use Reserved for Future Use 20–23 Reserved for Future Use 45–48 Reserved for Future Use TM - Test Mode (Indication-A) TM/ - Test Mode (Indication-B) SGND (Signal Ground) SGND (Signal Ground) V.35 Interface...
  • Page 24 APPENDIX A: Pinouts V.35 Interface (continued) Pin # Signal TT/ (Terminal Timing-B) RT/ (Receive Timing-B) ST (Send Timing-A) ST/ (Send Timing-B)

  • Page 25: Appendix B: Block Diagrams

    V.35↔HSSI INTERFACE CONVERTERS Appendix B: Block Diagrams Figure B-1. IC946A. V.35 DCE HSSI DTE LEVEL CHANGE S1-1 S1-2 S1-3 SYNC CIRCUIT S1-4 Figure B-2. IC945A. HSSI DCE V.35 DTE S1-1 S1-2 LEVEL CHANGE ENABLE S1-3 SYNC CIRCUIT S1-4...
  • Page 26 © 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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