Black Box ME500A Manuel utilisateur
CUSTOMER
SUPPORT
INFORMATION
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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
SEPTEMBER 1999
ME500A
Async/Sync Industrial Line Driver
PRW TX RX RTS CD
Async
↔
Sync
Industrial Line Driver
Error Test
Remote
Normal
Local
511E
511
1
TRADEMARKS
TRADEMARKS USED IN THIS MANUAL
AT&T is a registered trademark of American Telephone and Telegraph Company.
Any other trademarks used in this manual are acknowledged to be the property of
the trademark owners.
2
ASYNC/SYNC INDUSTRIAL LINE DRIVER
FEDERAL COMMUNICATIONS COMMISSION
AND
CANADIAN DEPARTMENT OF COMMUNICATIONS
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 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.
3
NOM STATEMENT
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.
4
ASYNC/SYNC INDUSTRIAL LINE DRIVER
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.
5
CONTENTS
Contents
Chapter Page
1. Specifications ............................................................................................................6
2. Introduction ..............................................................................................................7
2.1 Description ....................................................................................................7
2.2 Features ..........................................................................................................7
3. Configuration ............................................................................................................8
3.1 Configuration Switches ................................................................................8
3.2 Configuration Switch Set S1 ........................................................................9
3.3 Configuration Switch Set S2 ......................................................................11
3.4 Configuration Switch Set S3 ......................................................................13
4. Installation ..............................................................................................................16
4.1 Two-Wire Installation ..................................................................................16
4.1.1 Two-Wire Cable Connection via RJ-45 ................................................17
4.2 Four-Wire Installation ................................................................................18
4.2.1 Four-Wire Cable Connection via RJ-45 ..............................................18
4.3 Four-Wire, Multipoint Installation ............................................................19
4.3.1 Multipoint Twisted-Pair Connection ..................................................20
4.4 RS-232 Connection......................................................................................20
5. Operation ................................................................................................................21
5.1 LED Status Monitors....................................................................................21
5.1.1 The Power, TX, and RX Indicators ....................................................21
5.1.2 The RTS and CD Indicators ................................................................21
5.1.3 The Test Indicator ................................................................................22
5.1.4 The Error Indicators ............................................................................22
5.2 Anti-Streaming Error Indicator ..................................................................22
5.3 Power-Up......................................................................................................22
5.4 V.54 Test Modes ..........................................................................................23
5.4.1 Local Analog Loopback (LAL)............................................................23
5.4.2 Remote Digital Loopback (RDL) ........................................................24
5.4.3 Using the V.52 BER Test Independently ............................................24
5.5 Power-Down ................................................................................................25
Appendix. Cable Recommendations ..........................................................................26
6
ASYNC/SYNC INDUSTRIAL LINE DRIVER
1. Specifications
Transmission Format — Synchronous or asynchronous, 2-wire/half duplex or
4-wire/full or half duplex
Interface — RS-232 (CCITT V.24) connection via DB25 female;
Twisted-pair connection via RJ-45
Transmission Line — 2- or 4-wire UTP, 19 to 26 AWG
Data Rates — Synchronous or asynchronous at 1.2, 1.8, 2.4, 3.6,
4.8, 7.2, 9.6, 14.4, 19.2, 28.8, 38.4, 57.6, and 64 kbps
(switch-selectable)
Clocking — Internal, external, or receive recover
Controls — Carrier Constantly ON or Controlled by RTS;
RTS/CTS delay set to no delay, 7 ms, or 53 ms
Applications — Point-to-point or multipoint
Indicators —Mono-color LEDs for TX, RX, RTS, and CD; Single
LEDs for Power, Test, and Error
RTS Anti-Stream Timer — 12.5 sec., 50 sec., or disabled (switch-selectable);
Tolerance: +50%, -0
Diagnostics — V.52-compliant bit-error-rate pattern (511/511E
pattern) generator and detector with error-injection
mode; V.54 compliant—Local Analog Loopback and
Remote Digital Loopback, activated by front-panel
switch or via RS-232 interface
Transformer Isolation — 2000 V RMS
Surge Protection — Immune to IEC-801-5 Level 2, 1kV
Temperature — 14 to 158°F (-10 to +70°C)
Power Supply — 157 to 242 VAC Universal Interface
Size — 1.6"H x 5.5"W x 7.5"D (4 x 14 x 19.1 cm)
7
CHAPTER 2: Introduction
2. Introduction
2.1 Description
The Async/Sync Industrial Line Driver operates 2-wire (half duplex) or 4-wire (full
or half duplex), in synchronous or asynchronous modes, over unconditioned
telephone lines. The Line Driver supports data rates up to 64 kbps. It operates in
synchronous mode between the local and remote modems; when connected to an
asynchronous RS-232 device, the Line Driver converts the asynchronous data to
synchronous data.
To enhance overall performance, the Line Driver features equalization, anti-
streaming timer, transformer isolation (to guard against data loss due to ground-
potential differences), and Silicon Avalanche Diode surge protection (to guard
against data-line transients).
The Async/Sync Industrial Line Driver features V.52-compliant bit-error-rate
pattern tests and two V.54 test modes (local analog loopback and remote digital
loopback). The operator at the local end can test both local and remote modems,
plus the line, in the digital-loopback mode. Both RDL and LAL modes can be
controlled by a manual switch or via the V.24/RS-232 interface.
2.2 Features
• Distances up to 12 miles (19.2 km).
• Point-to-point or multipoint.
• Internal, external, or received loopback clocking.
• 2000-VAC transformer isolation and high-speed surge protection.
• Internal power supply.
8
ASYNC/SYNC INDUSTRIAL LINE DRIVER
3. Configuration
3.1 Configuration Switches
The Async/Sync Industrial Line Driver uses 24 external mini DIP switches that
allow configuration to an extremely wide range of applications. These 24 DIP
switches are grouped into three eight-switch sets, and are externally accessible from
the underside of the unit (see Figure 3-1). Since all configuration DIP switches are
externally accessible, there is no need to open the case for configuration.
The configuration switches allow you to select data rates, clocking methods, V.52
and V.54 tests, word lengths, extended signaling rates, async or sync mode, 2- or 4-
wire operation, anti-stream control, and input impedance. The information on the
following pages describes all switch locations, positions, and functions.
Figure 3-1. Bottom view of Async/Sync Industrial Line Driver.
The Line Driver has three sets of eight switches, yielding 24 total DIP switches. The
three sets will be referred to as switch sets S1, S2, and S3. As Figure 3-2 shows, the
orientation of all DIP switches is the same with respect to ON and OFF positions.
S3 S2 S1
On
Off
Rear Front
9
CHAPTER 3: Configuration
Figure 3-2. Close-up of DIP switches showing ON and OFF positions.
3.2 Configuration Switch Set S1
The DIP switches on S1 set data rate, clock source, async/sync mode, and carrier-
control method. The default settings are shown in the table below.
Table 3-1. S1 switches
Position Function Factory Default
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
S1-6 Clock Source On Internal
S1-7 Async/Sync On Async
S1-8 Carrier Control Off Constantly On
All the possible configuration settings are described in detail beginning on the
next page.
ON
↔
OFF
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2
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