Black Box IC714A-449-R2 User Manual
  1. Manuals
  2. Brands
  3. Black Box Manuals
  4. Media Converter
  5. IC714A-449-R2
  6. User manual
Black Box IC714A-449-R2 User Manual

Black Box IC714A-449-R2 User Manual

G.703 codirectional converter
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
G.703 Codirectional Converter
CUSTOMER
SUPPORT
INFORMATION
IC714A-449-R2
IC714A-530-R2
IC714A-V35-R2
IC714A-X21-R2
P W R
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
IC714AE-449-R2
IC714AE-530-R2
IC714AE-V35-R2
IC714AE-X21-R2
G . 7 0 3
E R R
T E S T
L O S
R D
T D
MAY 1997
IC714A-48-449-R2
IC714A-48-530-R2
IC714A-48-V35-R2
IC714A-48-X21-R2
N A L
C T I O
D I R E
5 C O
↔ V . 3
P A T T
R E M
A N A
D I G

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the IC714A-449-R2 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Black Box IC714A-449-R2

Summary of Contents for Black Box IC714A-449-R2

  • 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 AND DOC/MDC RFI STATEMENTS 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 G.703 CODIRECTIONAL CONVERTER 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: Safety Warning

    G.703 CODIRECTIONAL CONVERTER DISCLAIMERS This manual contains information proprietary to the manufacturer. No part of this publication may be reproduced in any form whatsoever without prior written approval. No representation or warranties for the fitness of these products for any purpose other than those specifically mentioned in this manual are made either by the manufacturer or its agents.

  • Page 6: Table Of Contents

    TABLE OF CONTENTS Contents Chapter Page 1. Specifications ....................7 1.1 G.703 Interface ..................7 1.2 Data-Communications Interface ............7 1.3 Data-Communications Control Signals ..........8 1.4 Other Physical Specifications ............... 9 2. Introduction ....................11 2.1 Functional Description ............... 11 2.2 Timing Theory ..................
  • Page 7 4.3.1 The Modem Self-Test ..............34 4.3.2 Local Analog Loopback ............. 35 4.3.3 Remote Digital Loopback ............36 4.3.4 Local Digital Loopback ............. 37 4.4 Calling Black Box ................38 4.5 Shipping and Packaging ..............39 Appendix: Pinouts ..................... 42...

  • Page 8: Specifications

    CHAPTER 1: Specifications 1. Specifications 1.1 G.703 Interface Type — Codirectional 64-kbps Line — 4-wire, 19- to 26-gauge Range — Up to 800 meters ( ⁄ mile) over 24-gauge wire Impedance — 120 ohms nominal Balance — Greater than 45 dB (up to 256 kHz) Greater than 35 dB (up to 384 kHz) Return Loss —...

  • Page 9: Data-Communications Control Signals

    G.703 CODIRECTIONAL CONVERTER 64, 56, or 48 kbps, user-selectable Data Rate — Spare Bandwidth — [at 56 or 48 kbps:] “1’s” density bit stuffing as per ITU-TSS V.110; additional asynchronous channel at 1200 bps; or transfer of RTS to DCD control signal, end-to-end Connector —...

  • Page 10: Other Physical Specifications

    CHAPTER 1: Specifications 1.4 Other Physical Specifications Compliance — EMI/RFI: FCC Part 15 Class A, DOC Class/MDC classe A Safety: IEC 380 Diagnostics: ITU-TSS V.52 and V.54 Standards — Internal Memory — 32 bits of RAM divided into (2) independent 16-bit buffers User Controls —...
  • Page 11 G.703 CODIRECTIONAL CONVERTER IC714A-48 models: –48 VDC directly from source Power (cont’d) — through detachable power cord (not included except for output-jack components); All models: Consumption: 25 watts Fuse — IC714A models: 0.2-amp; IC714AE models: 0.1-amp; IC714A-48 models: 250 V, 200 ma Isolation Voltage —...

  • Page 12: Introduction

    CHAPTER 2: Introduction 2. Introduction 2.1 Functional Description The G.703 Codirectional Converter converts the ITU-TSS (CCITT) G.703 codirectional (line) interface to standard data-communication interfaces. The Converter can perform two conversions: • Electrical Conversion — from G.703 to ITU-TSS V.35, V.36/V.11 (EIA RS- 449/422/423), X.21/V.11, or EIA RS-530.
  • Page 13 G.703 CODIRECTIONAL CONVERTER Figure 2-1 below shows a typical application of the G.703 Codirectional Converter. G.703 Codirectional 48, 56, or Converter Office- 64 kbps T1 or E1 side PCM Network equipment V.35, V.36 (RS-449/422), G.703 Codirectional X.21, or RS-530 Cable Line, 64 kbps Figure 2-1.

  • Page 14: Timing Theory

    CHAPTER 2: Introduction 2.2 Timing Theory 2.2.1 CCITT G.703 S IGNALING The CCITT G.703 codirectional signal is made up of two balanced signals: The receive and transmit signals carry timing and data information. The clock signal associated with each direction of transmission travels in the same direction as the data signal (see Figure 2-2 below).
  • Page 15 G.703 CODIRECTIONAL CONVERTER G.703 Codirectional Converter Elastic Buffer Elastic Equip. Buffer Information Signal Timing Signal Figure 2-3. LBT-DTE Connection. G.703 Codirectional Converter Elastic Buffer Elastic Equip. Buffer Information Signal Timing Signal Figure 2-4. LBT-DCE21 Connection.
  • Page 16 CHAPTER 2: Introduction G.703 Codirectional Converter Elastic Buffer Elastic Equip. Buffer Information Signal Timing Signal Figure 2-5. LBT-DCE Connection. Transmit-Clock Timing Mode When you use the external transmit clock on the data-communications side for G.703 transmit timing, there is complete independence, within the G.703 Codirectional Converter, between the receive and the transmit directions of transmission.
  • Page 17 G.703 CODIRECTIONAL CONVERTER G.703 Codirectional Converter Elastic Buffer Elastic Equip. Buffer Information Signal Timing Signal Figure 2-6. Transmit-Clock Timing Mode. G.703 Codirectional Converter Elastic Buffer DTE or DCE Oscillator Equip. Elastic Buffer Information Signal Timing Signal Figure 2-7. Internal-Clock Timing Mode.

  • Page 18: Tail-End Clocking

    CHAPTER 2: Introduction 2.2.3 T LOCKING Transmit clock from the external DCE source is provided for applications requiring the use of a modem in order to reach a remote DTE, as shown in Figure 2-8 on the next page (see Figures A-2, A-7, and A-10 in the Appendix for pinouts).
  • Page 19 G.703 CODIRECTIONAL CONVERTER Tail-End Circuit G.703 Line EXTC EXTC Modem Modem G.703 Codirectional Line Side of (V.35, V.36, RS-530) Converter Office Terminal Figure 2-8. Tail-Circuit Application. Bit Number 64-kbps data Binary Data Three-Level Data Violated Data Figure 2-9. G.703 Code Conversion.

  • Page 20: Rate-Conversion Rules

    CHAPTER 2: Introduction 2.3 Rate-Conversion Rules 56-to-64-kbps conversion is performed by suppressing bit position number 8. This bit position coincides with the introduced violation (as shown in Figure 2-9), and thus suppressing it conforms to the requirements of ITU-TSS (CCITT) standard V.110 for 56- to 64-kbps rate conversion. The suppressed bit can be used for RTS-DCD end-to-end signalling or for a secondary async channel.

  • Page 21: Installation

    Converter on a clean surface. • Inspect the unit for damage. Immediately report any damage you find to your carrier and to Black Box. 3.2 Site Requirements An AC-powered G.703 Codirectional Converter should be installed within 5 feet (1.5 m) of a grounded AC outlet capable of providing 230 or 115 volts.

  • Page 22: Setting Jumpers

    CHAPTER 3: Installation 3.3 Setting Jumpers 3.3.1 O VERVIEW Prior to installing the G.703 Codirectional Converter, determine its configuration in the data system and set its jumpers accordingly. Refer to Table 3-1 on page 22. The diagrams in Chapter 2 can help you identify the required jumper selection.
  • Page 23 G.703 CODIRECTIONAL CONVERTER Table 3-1. Setting Jumpers Jumper Factory Possible Identity Setting Position Function Connect Connect: Protective ground connected to signal ground. Disconn Disconn Disconn: Protective ground disconnected from signal ground. TC G.703 LBT The Tx-pair timing is the recovered clock from the CCITT G.703 Rx pair.

  • Page 24: The Jumper-Setting Procedure

    CHAPTER 3: Installation 3.3.2 T UMPER ETTING ROCEDURE CAUTION! Disconnect the unit from the power line before removing it from its housing. WARNING: HIGH VOLTAGE! Any adjustment, mainten-ance, and repair of the open instrument under voltage should be avoided as much as possible, and, when inevitable, should be carried out only by a skilled person who is aware of the hazard involved.

  • Page 25: Installing A Single Unit In A 19-Inch Rack

    NAME 3.4.2 I NSTALLING A INGLE NIT IN A INCH The rack-adapter kit for single-unit installation includes one short bracket and one long bracket. The brackets are fastened with screws to the two side walls of the case, as shown in Figure 3-2 below. To prepare the Converter for rack installation, attach the two brackets to the sides of the unit.

  • Page 26: Installing Two Units In A 19-Inch Rack

    CHAPTER 3.4.3 I 19-I NSTALLING NITS IN A The adapter kit includes two long side rails (one for each unit), which slide into each other to fasten the units together, and two short side brackets, which hold the two Converters side by side in a 19-inch rack. Refer to Figure 3-3 on the next page when you perform the following procedure: 1.
  • Page 27 G.703 CODIRECTIONAL CONVERTER Figure 3-3. Installing two units in a 19-inch rack.

  • Page 28: Connecting Power And Data Cables

    CHAPTER 3: Installation 3.5 Connecting Power and Data Cables After you set the G.703 Codirectional Converter’s internal jumpers, the Converter is ready to be cabled for operation. Its electrical connectors are located on its rear panel, as shown in Figures 3-4 and 3-5 below.

  • Page 29: Power Connection

    G.703 CODIRECTIONAL CONVERTER 3.5.1 P OWER ONNECTION The power connection provides AC or DC voltage to the Converter. To make this connection on the 115-VAC (IC714A) models, first attach the IEC 320 female outlet of the included power cord to the IEC 320 male inlet on the Converter’s rear panel.

  • Page 30: Line Connection

    CHAPTER 3: Installation 3.5.2 G.703 LINE C ONNECTION The G.703 LINE connection provides an interface for the TX and RX signals between the Converter and G.703 line equipment. To make this connection, attach the wires from the line equipment to the terminal block on the Converter this way: NOTE There is no + or - XMT or RCV.

  • Page 31: Dte Connection

    ONNECTION Non-X.21 models of the G.703 Codirectional Converter can support a 1200- bps async secondary channel when your main channel is operating at 56 or 48 kbps, but special T-cables are required. Call Black Box Technical Support for more information.

  • Page 32: Operation

    CHAPTER 4: Operation and Troubleshooting 4. Operation and Troubleshooting Besides giving operating instructions, this chapter describes the front-panel controls and LEDs and their functions, and tells you what to do if there is a problem with the unit. 4.1 Front-Panel Controls and LEDs Six LEDs are visible through the front panel (see Figure 4-1 below).
  • Page 33 G.703 CODIRECTIONAL CONVERTER Table 4-1. Functions of LEDs and Controls. Indicator/Control Function PWR (Green LED) Lights when the unit is receiving power. Power TD (Yellow LED) Flickers when data is present at transmit Transmit Data input and goes off when a steady mark is present.

  • Page 34: Operating Instructions

    CHAPTER 4: Operation and Troubleshooting 4.2 Operating Instructions The G.703 Codirectional Converter operates unattended once it has been installed and powered up. Intervention is only required when the Converter is set up for the first time, when it must be adapted to new operational requirements, or when diagnostic loops are necessary.

  • Page 35: The Modem Self-Test

    ERR LED lights briefly. 3. If the ERR stays lit or continues to flicker after the initial flash, the Converter is faulty; call Black Box to arrange for repair or replacement. Otherwise, the Converter passes the test; restore all of the buttons to their normal positions.

  • Page 36: Local Analog Loopback

    CHAPTER 4: Operation and Troubleshooting PATT DEPRESSED DEPRESSED PATTERN XMTR GENERATOR PATTERN RCVR TESTER ERROR Figure 4-3. Modem self-test. 4.3.2 L OCAL NALOG OOPBACK Activate the local analog loopback test by depressing the ANA button or by raising the level of the Local Loopback signal received by the Converter’s DTE-side connector (on DB25 Pin 18 on the RS-530 models, M/34 Pin JJ on the V.35 models, or DB37 Pin 10 on the V.36/RS-449 models).

  • Page 37: Remote Digital Loopback

    G.703 CODIRECTIONAL CONVERTER 2. Verify that the DTE is operating properly and can be used for a test. 3. Perform the test using one of these methods: • Send data from the DTE and check the echoed data stream. • Hook up an external Bit Error Rate Test (BERT) unit in place of the DTE.

  • Page 38: Local Digital Loopback

    CHAPTER 4: Operation and Troubleshooting DEPRESSED DATA XMTR RCVR LOCAL REMOTE RCVR XMTR DATA Figure 4-4. Remote digital loopback. 3. If the BERT test indicates a fault, but both Converters pass their modem self-tests (see Section 4.3.1), there is a problem somewhere in the communication line between the units.

  • Page 39: Calling Black Box

    If you determine that your G.703 Codirectional Converter is malfunctioning, do not attempt to alter or repair the unit. It contains no user-serviceable parts. Contact Black Box Technical Support at (724) 746-5500; the problem might be solvable over the phone.

  • Page 40: Shipping And Packaging

    (for V.36/RS-449 models) the adapter cable you’re using with it. If you are returning the Converter, make sure you include its manual as well. Before you ship, contact Black Box to get a Return Authorization (RA) number.

  • Page 41: Appendix: Pinouts

    G.703 CODIRECTIONAL CONVERTER Appendix: Pinouts Table A-1 lists the signals and leads supported by the four Converter DTE interfaces. Signals in different interfaces that are next to each other in this table are analogous (that is, they perform roughly the same functions). This means that the pinout of the RS-530-to-RS-449 adapter included with the RS- 449 models is also shown in this table;...
  • Page 42 APPENDIX: Pinouts Table A-1 (continued). Interface-Connector Pinouts ITU-TSS V.35 RS-530 V.36/ X.21 Signal Description Circuit RS-449 Names Pin(s) — Clear to Send Assuming it is ready to (CTS, CS) receive, the Converter — raises this signal a few moments after sensing RTS. —...
  • Page 43 G.703 CODIRECTIONAL CONVERTER Table A-1 (continued). Interface-Connector Pinouts ITU-TSS V.35 RS-530 V.36/ X.21 Signal Description Circuit RS-449 Names Pin(s) — Serial Clock Rcv. A serial data-rate clock (SCR), Rcv. Tim- output from the Converter to — a data sink. Positive clock ing (RT), Rec’ver Signal Element transitions correspond to...
  • Page 44 APPENDIX: Pinouts TRANSMITTED DATA-A TRANSMITTED DATA-B RECEIVED DATA-A RECEIVED DATA-B G.703 V.35 Codirectional TRANSMITTER TIMING-A (DTE) Converter (DCE) M/34 AA TRANSMITTER TIMING-B M/34 RECEIVER TIMING-A RECEIVER TIMING-B PROTECTIVE GND SIGNAL GND HH REMOTE LOOPBACK JJ LOCAL LOOPBACK KK TEST MODE Figure A-1.
  • Page 45 G.703 CODIRECTIONAL CONVERTER C RTS TRANSMITTED DATA-A TRANSMITTED DATA-B R RECEIVED DATA-A RECEIVED DATA-B G.703 V.35 RECEIVER TIMING-A Codirectional (DCE) Converter RECEIVER TIMING-B (DCE) M/34 M/34 A PROTECTIVE GND B SIGNAL GND U TRANSMITTER TIMING (DTE SOURCE)-A W TRANSMITTER TIMING (DTE SOURCE)-B H DTR Figure A-2.
  • Page 46 APPENDIX: Pinouts 12 Ib 10 Cb Cb 10 G.703 Codirectional X.21 Converter (DTE) (DCE DB15 DB15 Rb 11 13 Sb Sb 13 Figure A-3. Connecting an X.21 DTE to an X.21 Converter.
  • Page 47 G.703 CODIRECTIONAL CONVERTER INDICATION-A 12 INDICATION-B CONTROL-A 10 CONTROL-B TRANSMITTED DATA-A G.703 TRANSMITTED DATA-B Codirectional X.21 Converter (DCE) RECEIVED DATA-A (DTE) DB15 RECEIVED DATA-B DB15 SIGNAL ELEMENT TIMING-A 13 SIGNAL ELEMENT TIMING-B SIGNAL GND SHIELD Figure A-4. Connecting an X.21 DCE to an X.21 Converter. NOTE The unit’s timing jumpers must be set to LBT-DCE21 (see Sections 2.2.2 and 3.3) for this type of connection to work.
  • Page 48 APPENDIX: Pinouts SHIELD SHIELD 19,20,37 SG,RC,SC SG,RC,SC 19,20,37 RS-a RS-a 25 RS-b RS-b 13 RR-a RR-a 31 RR-b RR-b CS-a CS-a 27 CS-b CS-b V.36 Adapter (DTE) DM-a DM-a Cable for G.703 29 DM-b DM-b Codirectional Converter RS-449 (DCE) ST-a ST-a (DTE) DB37...
  • Page 49 G.703 CODIRECTIONAL CONVERTER SG,RC,SC 19,20,37 19,20,37 SG,RC,SC DM-a 12 TR-a DM-b 30 TR-b RR-a RS-a RR-b 25 RS-b RS-a 13 RR-a RS-b 31 RR-b V.36 RT-a 17 TT-a Adapter (DCE) Cable for RT-b 35 TT-b G.703 Codirectional Converter TT-a RS-449 RT-a (DCE) (DCE)
  • Page 50 APPENDIX: Pinouts SHIELD SHIELD 19,20,37 SG,RC,SC SIGNAL GND RS-a RTS-a 25 RS-b RTS-b 13 RR-a DCD-a 31 RR-b DCD-b CS-a CTS-a 27 CS-b CTS-b V.36 (DTE) DM-a DSR-a G.703 Codirectional 29 DM-b DSR-b Converter RS-449 (DTE) ST-a DB25 TC-a 37-pin 23 ST-b TC-b DB37...
  • Page 51 G.703 CODIRECTIONAL CONVERTER SIGNAL GND 19,20,37 SG,RC,SC DSR-a 12 TR-a DSR-b 30 TR-b DCD-a RS-a DCD-b 25 RS-b RTS-a 13 RR-a RTS-b 31 RR-b V.36 RC-a 17 TT-a (DCE) G.703 Codirectional RC-b 35 TT-b Converter (DCE) EXTC-a RS-449 RT-a (DCE) DB25 EXTC-b 26 RT-b...
  • Page 52 APPENDIX: Pinouts SIGNAL GND SIGNAL GND DSR-a DSR-a 22 DSR-b DSR-b CTS-a CTS-a 13 CTS-b CTS-b RTS-a RTS-a 19 RTS-b RTS-b DCD-a DCD-a 10 DCD-b DCD-b 15 TC-a TC-a RS-530 G.703 Codirectional 12 TC-b TC-b Converter DB25 (DCE) 17 RC-a RC-a DB25 RC-b...
  • Page 53 G.703 CODIRECTIONAL CONVERTER SIGNAL GND SIGNAL GND 20 DTR-a DSR-a 23 DTR-b DSR-b RTS-a DCD-a 19 RTS-b DCD-b DCD-a RTS-a 10 DCD-b RTS-b 24 EXTC-a RC-a RS-530 G.703 Codirectional EXTC-b RC-b Converter DB25 (DCE) 17 RC-a EXTC-a DB25 RC-b EXTC-b TD-a RD-a 14 TD-b...
  • Page 54 © Copyright 1997. 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:

Ic714ae-449-r2Ic714ae-530-r2Ic714a-530-r2Ic714a-48-530-r2Ic714a-v35-r2Ic714a-48-449-r2 ... Show all

Table of Contents