Black Box ME758C-RJ11, ME759C-RJ45, ME759C-RJ11, ME758C-RJ45 User Manual

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 [phone]
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [e-mail]

MAY 1995
ME758C-RJ11
ME758C-RJ45
ME759C-RJ11
ME759C-RJ45

Multi-Function LD Cards

Power

TD

RD

RTS

CD

Error

Analog

511

Remote

511/E

Test

1

FCC 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.

TRADEMARKS USED IN THIS MANUAL

AT&T is a registered trademark of American Telephone and Telegraph
Company.
Littelfuse is a registered trademark of Littelfuse, Inc.

Any other trademarks mentioned in this manual are acknowledged to be the property of the
trademark owners.

2

MULTI-FUNCTION LD CARD

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.

3

NOM STATEMENTS

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.

4

MULTI-FUNCTION LD CARD

Contents

Chapter Page

1. Specifications ............................................................................................. 5

2. Introduction ............................................................................................... 8

2.1 Overview .............................................................................................. 8

2.2 Features ............................................................................................... 8

3. Configuration ........................................................................................... 10

3.1 Setting the Switches on the Main Module ....................................... 10

3.2 Setting the Jumpers on the Interface Module ................................ 17

4. Installation ................................................................................................ 22

4.1 The MicroRacks: An Overview ......................................................... 22

4.2 The MicroRacks’ Power Supply ....................................................... 23

4.3 Installing the Multi-Function LD Card in the MicroRack .............. 24

4.4 The RS-232 Serial Cables and Connectors ...................................... 25

4.5 The Modem-to-Modem Line Cables and Connectors .................... 26

4.6 Multipoint Applications .................................................................... 28

5. Operation and Diagnostics ...................................................................... 29

5.1 Status LEDs ........................................................................................ 29

5.2 Diagnostic Testing Using the Error LED ........................................ 31

5.3 Power-Up ........................................................................................... 32

5.4 V.54 and V.52 Diagnostic Tests ........................................................ 33

6. Troubleshooting ...................................................................................... 36

6.1 Calling Your Supplier ....................................................................... 36

6.2 Shipping and Packaging ................................................................... 36

Appendix: Cable Recommendations ............................................................. 37

5

CHAPTER 1: Specifications

1. Specifications

Hardware
Required — Cards can be installed only in MicroRacks (see

Section 4.1)

Cable Required — For modem-to-modem line: Two- or four-wire

unconditioned twisted-pair, 19 to 26 AWG (see
the Appendix), pinned as shown in Section 4.5

Compliance — FCC Part 15 Class A, DOC Class/MDC classe A

Interfaces — Serial:

ME758C models: EIA/TIA-561 (compatible with

EIA RS-232 and ITU-TSS [CCITT] V.24);

ME759C models: EIA RS-232/ITU-TSS V.24
Line: Two- or four-wire telco;
Internal: Card-edge for module↔MicroRack

interconnection

Protocol — Synchronous or asynchronous

Clock Source — Internal, external (from DTE) or received (from

other Card) (user-selectable)

Data Format — Word length (including start bit, data bits, stop bits,

and parity bit) must equal 8, 9, 10, or 11 bits (user-

selectable)

Flow Control — Transparent to all types of software (X-ON/X-OFF,

robust X-ON/X-OFF, etc.) flow control; can be set

to support hardware flow control

Operating Mode — Two-wire half-duplex or four-wire full- or half-

duplex (user-selectable)

6

MULTI-FUNCTION LD CARD

Data Rates — 57.6, 38.4, 28.8, 19.2, 14.4, 9.6, 7.2, 4.8, 3.6, 2.4, or

1.2 kbps (user-selectable)

Maximum
Distance — See the maximum distance chart in the Appendix

Isolation — 1500 volts RMS minimum using custom transformers

Surge-Protection
Method — Silicon Avalanche Diodes

Surge-Response
Time — 1 ps

Maximum Surge
Protection — 600 watts dissipated after 1 ms

User Controls — (2) Front-panel toggle switches:

Remote or (local) Analog loopback;

511 or 511/E V.52 diagnostics;
(3) 8-position DIP switches on main module:

(1) for data rate, clock source, protocol, and carrier

control;

(1) for 2- or 4-wire operation, diagnostics, RTS/CTS

delay, signaling-rate range, and word length;

(1) for input impedance, point-to-point or

multipoint operation, remote loopback-test
initiation, and antistream control;

(3) Frame-ground-connection jumpers on interface

module:

To Line Shield, DTE Shield (Protective Ground),

and Signal Ground

Indicators — (11) Front-panel LEDs:

(1) each for Power, Test, Error;

(2) each for TD, RD, RTS, and CD

Diagnostics — ITU-TSS V.54 remote digital and local analog

loopbacks; ITU-TSS V.52 BERT testing

Connectors — On main module:

All models:

7

CHAPTER 1: Specifications

(1) 50-position card-edge male (to MicroRack);

On interface module:

All models:

(1) 50-position card-edge male (to MicroRack);

ME758C-RJ11:

(1) 6-pin RJ-11 female for modem-to-modem line,
(1) DB25 female for modem-to-DTE line;

ME758C-RJ45:

(1) RJ-45 female for modem-to-modem line,
(1) DB25 female for modem-to-DTE line;

ME759C-RJ11:

(1) 6-pin RJ-11 female for modem-to-modem line,
(1) 10-pin RJ female for modem-to-DTE line;

ME759C-RJ45:

(1) RJ-45 female for modem-to-modem line,
(1) 10-pin RJ female for modem-to-DTE line

Power — From MicroRack’s power supply (see Section 4.2):

Input 120 VAC or 240 VAC (user-selectable);

Output: 10 VAC;

Consumption: 1.8 watts typical

Fuse — On MicroRack (see Section 4.2.2):

400 mA when power supply is set to 120-VAC input;

200 mA when power supply is set to 240-VAC input

Temperature — 32 to 122˚F (0 to 50˚C)

Humidity — Up to 95% noncondensing

Maximum
Altitude — 15,000 ft. (4572 m)

Size — Main (front) module: 3.1"H x 1"W x 5.4"D

(7.9 x 2.5 x 13.7 cm);
Interface (rear) module: 3.5"H x 1"W x 2.9"D

(8.9 x 2.5 x 7.4 cm)

Weight — Total for main and interface modules: 0.2 lb. (0.1 kg)

8

MULTI-FUNCTION LD CARD

2. Introduction

2.1 Overview

The Multi-Function LD Card is a short-range modem on a dual rack card (it
has a main [front] module and an interface [rear] module). The Card
operates across two wires (half-duplex) or four wires (full- or half-duplex),
communicating synchronously or asynchronously, up to a maximum range of
20 miles (32.2 km). You can set the Card to any of twelve data rates from 1.2
to 57.6 kbps. Local and remote modems on Multi-Function LD Cards always
communicate with each other synchronously. When connected to an
asynchronous RS-232 device, the Card performs synchronous↔asynchronous
conversion.

The Card has several features that enhance its overall performance,
including automatic equalization, automatic gain control, an antistreaming
timer, transformer isolation, and Silicon Avalanche Diode surge protection.
The Card also has strong diagnostics: It features V.52-compliant bit-error-rate
(BERT) pattern tests and two V.54 test modes. With the Card’s 11 easy-to-read
front-panel LEDs, you can easily monitor the status of data transmission and
diagnostic testing.

The Multi-Function LD Card is fabricated using the latest surface-mount
technology, so you get high-quality short-range-modem performance on a
convenient rack card. The Card is available with either DB25 or 10-pin RJ-style
serial-interface connectors, and either RJ-11 or RJ-45 line-interface
connectors, on its interface (rear) module. It fills one function-card slot in
our MicroRacks (RM202, RM204, RM208, or RM216).

2.2 Features

• Convenient rack-card design

• Synchronous or asynchronous communication

• Data rates up to 57.6 kbps, distances up to 20 miles (32.2 km)

• 2-wire/half-duplex or 4-wire/full- or half-duplex operation

• Point-to-point or multipoint operation

9

CHAPTER 2: Introduction

• Internal, external, or received loopback clocking

• Hardware or software flow control

• Automatic equalization and gain control

• Anti-streaming timer

• Built-in transformer isolation and high-speed surge protection

• V.52 and V.54 test modes

• Eleven LED indicators show you status at a glance

• Error LED lights when Card detects broken or inferior cable

10

MULTI-FUNCTION LD CARD

This chapter describes the locations and posssible settings of the Multi­Function LD Card’s configuration controls, and provides detailed instructions
for setting them. Section 3.1 tells you about the three 8-position DIP switches
on the Card’s main (front) module. Section 3.2 tells you about the three
jumpers (“straps”) on the Card’s interface (rear) module. Once you’ve
configured the Multi-Function LD Card, it is designed to operate
transparently, without needing to be frequently reconfigured. Just set it and
forget it!

3.1 Setting the Switches on the Main Module

3.1.1 W

HERE THESWITCHESARE

The Multi-Function LD Card has three 8-position DIP switches—S1, S2, and
S3—mounted on the circuit board of its main (front) module, as shown in
Figure 3-1 below. These configuration switches allow you to select data rates,
clocking methods, V.52 and V.54 tests, word lengths, extended signaling rates,
sync or async protocol, 2- or 4-wire operation, antistream control, and input
impedance. As shown in Figure 3-2 on the next page, the “ON” and “OFF”
points are the same for all of the switch positions.

Figure 3-1. The main-module switches.

S1 S2

S3

(on other

side of
board)

11

CHAPTER 3: Configuration

3.1.2 C

ONFIGURATION

S

WITCH

“S1”

Use the individual positions on DIP switch S1 to set data rate, clock source,
sync vs. async protocol, and carrier-control method. The factory-default
settings are summarized in Table 3-1 below.

Table 3-1. Switch S1 Summary

Position Function Default Setting

S1-1 Data Rate On
S1-2 Data Rate Off

9600 bps

S1-3 Data Rate Off
S1-4 Data Rate On

S1-5 Clock Source On

Internal

S1-6 Clock Source On

S1-7 Protocol On Asynchronous

S1-8 Carrier Control Off Constantly ON

Figure 3-2. The ON and OFF settings of the DIP switches.

12345678

ON

ON

OFF