Black Box IC714A-449-R2 Bedienungsanleitung

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: [email protected]

MAY 1997

IC714A-449-R2 IC714AE-449-R2 IC714A-48-449-R2

IC714A-530-R2 IC714AE-530-R2 IC714A-48-530-R2

IC714A-V35-R2 IC714AE-V35-R2 IC714A-48-V35-R2

IC714A-X21-R2 IC714AE-X21-R2 IC714A-48-X21-R2

G.703 Codirectional Converter

G.703↔V.35 CODIRECTIONAL

PWR TD RD LOS TEST ERR PATT

REM

ANA

DIG

FCC AND DOC/MDC RFI STATEMENTS

FEDERAL COMMUNICATIONS COMMISSION

AND

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

operated in a commercial environment. Operation of this equipment in a

residential area is likely to cause interference, in which case the user at his own

expense will be required to take whatever measures may be necessary to correct

the interference.

Changes or modifications not expressly approved by the party responsible

for compliance could void the user’s authority to operate the equipment.

This digital apparatus does not exceed the Class A limits for radio noise emission from

digital apparatus set out in the Radio Interference Regulation of Industry Canada.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites

applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le

brouillage radioélectrique publié par Industrie Canada.

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.

3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de

operación deben ser respetadas.

4. Todas las instrucciones de operación y uso deben ser seguidas.

5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca

de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc..

6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que

sean recomendados por el fabricante.

7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea

recomendado por el fabricante.

8. Servicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá

a lo descrito en las instrucciones de operación. Todo otro servicio deberá ser

referido a personal de servicio calificado.

9. El aparato eléctrico debe ser situado de tal manera que su posición no

interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá,

alfombra o superficie similar puede bloquea la ventilación, no se debe colocar

en libreros o gabinetes que impidan el flujo de aire por los orificios de

ventilación.

10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor

como radiadores, registros de calor, estufas u otros aparatos (incluyendo

amplificadores) que producen calor.

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.

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.

14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las

recomendaciones del fabricante.

15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas

de energia.

16. El cable de corriente deberá ser desconectado del cuando el equipo no sea

usado por un largo periodo de tiempo.

17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean

derramados sobre la cubierta u orificios de ventilación.

18. Servicio por personal calificado deberá ser provisto cuando:

A: El cable de poder o el contacto ha sido dañado; u

B: Objectos han caído o líquido ha sido derramado dentro del aparato; o

C: El aparato ha sido expuesto a la lluvia; o

D: El aparato parece no operar normalmente o muestra un cambio en su

desempeño; o

E: El aparato ha sido tirado o su cubierta ha sido dañada.

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.

The manufacturer reserves the right to revise this publication and make

changes without obligation to notify any person of such revisions and

changes.

The manufacturer shall not be liable for any direct, indirect, special,

incidental, or consequential damages, whether based on contract, tort, or any

legal theory.

SAFETY WARNING

Always observe standard safety precautions while installing, operating, or

troubleshooting this product. To avoid the possibility of electrical shock,

disconnect the unit’s power cord from the power source before you remove

the unit’s cover.

TRADEMARKS USED IN THIS MANUAL

Any trademarks mentioned in this manual are acknowledged to be the property of the

trademark owners.

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 .................................................................................... 13

2.2.1 CCITT G.703 Signalling ............................................................ 13

2.2.2 G.703 Codirectional Timing ..................................................... 13

2.2.3 Tail-End Clocking ...................................................................... 17

2.2.4 G.703 Codirectional Rules ......................................................... 17

2.3 Rate-Conversion Rules ........................................................................ 19

2.4 Physical Description ............................................................................ 19

3. Installation .................................................................................................. 20

3.1 Unpacking ........................................................................................... 20

3.2 Site Requirements ............................................................................... 20

3.3 Setting Jumpers ................................................................................... 21

3.3.1 Overview ..................................................................................... 21

3.3.2 The Jumper-Setting Procedure ................................................. 23

3.4 Installation in 19-Inch Racks .............................................................. 23

3.4.1 Overview ..................................................................................... 23

3.4.2 Installing a Single Unit in a 19-Inch Rack ................................ 24

3.4.3 Installing Two Units in a 19-Inch Rack ..................................... 25

3.5 Connecting Power and Data Cables .................................................. 27

3.5.1 Power Connection ..................................................................... 28

3.5.2 G.703 LINE Connection ............................................................ 29

3.5.3 DTE Connection ........................................................................ 30

3.5.4 Async Secondary-Channel Connection .................................... 30

G.703 CODIRECTIONAL CONVERTER

Contents (continued)

Chapter Page

4. Operation ................................................................................................... 31

4.1 Front-Panel Controls and LEDs ......................................................... 31

4.2 Operating Instructions ....................................................................... 33

4.2.1 Turn-On Procedure ................................................................... 33

4.2.2 Activating Loops ......................................................................... 33

4.2.3 Turn-Off Procedure ................................................................... 33

4.3 Diagnostic Loops ................................................................................. 33

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

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 (1⁄2mile) 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 — Less than 20 dB (up to 128 kHz)

Less than 14 dB (up to 384 kHz)

“Pulse” Amplitude — 1.0 V nominal

“Zero” Amplitude — 0 V ± 0.1 V max

Clock Frequency — 64 kHz

Frequency Tracking — ± 500 ppm

Connector — 5-screw terminal block

Jitter Performance — To G.823 requirements

1.2 Data Communications Interface

Type — Models with “-449” affix: EIA RS-530 adapted to

EIA RS-449 (ITU-TSS V.11/V.36/EIA RS-422/423);

Models with “-530” affix: EIA RS-530;

Models with “-V35” affix: ITU-TSS V.35;

Models with “-X21” affix: ITU-TSS X.21/V.11

G.703 CODIRECTIONAL CONVERTER

Data Rate — 64, 56, or 48 kbps, user-selectable

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 — Models with “-449” affix: DB25 female cabled to

DB37 female;

Models with “-530” affix: DB25 female;

Models with “-V35” affix: 34-pin M-block female;

Models with “-X21” affix: DB15 female

1.3 Data-Communications Control Signals

Functional — DCD, 64 kbps: ON when Rx pair contains required

violations, OFF when the Rx pair does not

contain required violations;

DCD, 48 or 56 kbps: When the Rx pair contains

the required violations, the DCD signal reflects

the state of the remote RTS; DCD is always OFF

when no violations are detected;

CTS output: ON after RTS ON, with delay; OFF

when RTS OFF, or during Loss of Signal

condition;

DSR output: ON (+V) when power is available

Clock Source — From G.703 Receive pair (LBT), from DCE (EXT),

or from internal source (INT), user-selectable;

If LBT, three sub-options are user-selectable:

Unit is DCE and RC and TC signals are outputs

from the unit to the local DTE (LBT-DTE);

RC signal is an output from the unit to the local

DTE, but TC signal is an input from a tail-

circuit DCE (LBT-DCE); or

X.21 only: Unit is DTE and RC and TC signals

are both inputs to the unit from the local DCE

(LBT-DCE21)

CHAPTER 1: Specifications

1.4 Other Physical Specifications

Compliance — EMI/RFI: FCC Part 15 Class A, DOC Class/MDC

classe A

Safety: IEC 380

Standards — Diagnostics: ITU-TSS V.52 and V.54

Internal Memory — 32 bits of RAM divided into (2) independent 16-bit

buffers

User Controls — (4) Front-mounted pushbuttons: Local Digital

Loopback (DIG), Local Analog Loopback (ANA),

Remote Digital Loopback (REM), and Test

Pattern (PATT);

(5) Internal jumpers: Connect/disconnect grounds,

clock source, LBT clock-signal derivation, data

rate, and V.54 delay;

(1) Internal solder contact to connect grounds;

Loopback tests can also be triggered by interface

signals from local DTE

Diagnostics — Local digital loopback; local analog loopback (V.54

Loop 3); remote digital loopback (V.54 Loop 2);

511-bit V.52 BERT; all user-initiated and user-

terminated

Indicators — (6) Front-mounted LEDs: Power (PWR), Receive

Data (RD), Transmit Data (TD), Loss of Signal

(LOS), Test (TEST), and Error (ERR)

Power — IC714A models : Directly from outlet through

detachable 6-ft. (1.8-m) power cord (included):

Optimal

Input: 115 VAC, 60 Hz, 0.2 amps;

Input Ranges: 103.5 to 126.5 VAC, 47 to 63 Hz;

IC714AE models: Directly

from outlet through

detachable 6-ft. (1.8-m) power cord (included):

Optimal

Input: 230 VAC, 50 Hz, 0.1 amps;

Input Ranges: 207 to 253 VAC, 47 to 63 Hz;

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