Black Box LB0010A-A21-R2, LB0010A-AMST-R2, LB0010A-U24-R2 Manual

MARCH 1999
LB0010A-A24-R2 LB0010A-A36-R2 LB0010A-A21-R2 LB0010A-AMST-R2
LB0010A-U24-R2 LB0010A-U36-R2 LB0010A-U21-R2 LB0010A-UMST-R2
LB0010A-A35-R2 LB0010A-A530-R2 LB0010A-A4W-R2 LB0010A-ASST-R2
LB0010A-U35-R2 LB0010A-U530-R2 LB0010A-U4W-R2 LB0010A-USST-R2
Remote MiniBridge
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]
FCC AND IC 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 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 classe A prescrites dans le Règlement sur le
brouillage radioélectrique publié par Industrie Canada.
1
REMOTE MINIBRIDGE
EUROPEAN UNION DECLARATION OF CONFORMITY
The manufacturer declares that the Remote Minibridge conforms
to the following standards:
• EN55022 (1994): Limits and methods of measurement of radio
disturbance characteristics of information technology equipment.
• EN50082-1 (1992): Electromagnetic compatibility: Generic immunity
standard for residential, commercial, and light industry.
The Remote MiniBridge herewith complies with the requirements of
the EMC Directive 89/336/EEC. The product was tested in a typical
configuration.
2
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.
3
REMOTE MINIBRIDGE
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.
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:
4
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.
UL STATEMENTS
UL Listing Requirements
IMPORTANT SAFETY INSTRUCTIONS
For North American Users
The Remote MiniBridge is powered by an external power
supply. To reduce the risk of shock, fire, and injury, use it
only with a UL® listed and CSA Certified Class 2 power supply
rated 12 VDC, 400 or more mA.
Exigences UL
INSTRUCTIONS IMPORTANTS DE SÉCURITÉ
Pour les utilisateurs Nord Americains
Le MiniBridge Remote est renforcé par un transformateur
extérieur. Afin de réduire le risque d’électrocution, de feux
ou de blessure, utiliser seulement avec le UL listé et le CSA
Certifié classe 2 le transformateur de 12 VDC, 400 mA ou plus.
5
REMOTE MINIBRIDGE
TÜV Certification Requirements
European Users
Electrical ratings: 12 VDC, 400 or more mA
CAUTION!
To reduce the risk of electric shock, fire, and injury, use
only with a power supply which is approved for the
latest version of EN 60950.
TÜV-Zertifizierungsanforderungen
Europäische Benutzer
Leistungsaufnahme: 12 VDC, 400 oder mehr mA
ACHTUNG!
Um das Risiko eines elektrischen Schlages oder
Brandes so weit wie möglich zu vermeiden, verwenden
Sie nur ein Stromversorgung das gemäß der neuesten
Version des Standards EN 60950 zugelassen ist.
6
TABLE OF CONTENTS
Contents
1. Specifications ..................................................... 8
2. Introduction ..................................................... 14
2.1 LAN-Interface Overview ........................... 15
2.2 WAN-Interface Overview .......................... 15
3. Installation ....................................................... 19
3.1 Switch Setting ............................................ 19
3.2 LAN Interface ........................................... 20
3.3 WAN Interface .......................................... 21
3.3.1 RS-232 or RS-530 Models ............... 21
3.3.2 V.35, RS-449 (V.36), or
X.21 Models ................................ 22
3.3.3 Fiberoptic Models ........................... 23
3.3.4 Four-Wire Models ........................... 23
3.4 Power ......................................................... 26
4. Operation ......................................................... 27
5. Troubleshooting .............................................. 28
5.1 Calling Black Box ..................................... 28
5.2 Shipping and Packaging ......................... 29
Appendix: WAN Pinouts ....................................... 30
7
REMOTE MINIBRIDGE
1. Specifications
Compliance — CE; FCC Class A, IC Class/classe A
Standards — LAN: IEEE 802.3 Ethernet v. 2
Interfaces —
LAN:
“-Axx” models: 10BASE5 AUI;
“-Uxx” models: 10BASE-T;
WAN:
“-x24” models: TIA RS-232/ITU-TSS V.24/V.28, DTE;
“-x35” models: ITU-TSS V.35;
“-x36” models: TIA RS-422/ITU-TSS V.36;
“-x53” models: TIA RS-530;
“-x21” models: ITU-TSS X.21;
“-x4W” models: Proprietary 4-wire;
“-xMST” models: 850-nm multimode fiberoptic;
“-xSST” models: 1300-nm single-mode fiberoptic
Protocols — WAN: Synchronous or asynchonous,
embedded in RFC 1662 variant of HDLC framing
LAN Table — 10,000 MAC addresses with five-minute
automatic aging (updating)
Filtering and Forwarding — 14,880 packets (frames)
per second
8
CHAPTER 1: Specifications
Buffer Size — 256 frames
Throughput Delay — 1 frame
Data Format — WAN: HDLC-like frames (in async mode,
these are broken into 8-data-bit octets which are
preceded by a start bit and followed by a stop bit)
Flow Control — None
Operation —
LAN:
AUI models: Half-duplex;
10BASE-T models: Half- or full-duplex
Data Rate —
LAN:
Full-duplex 10BASE-T: 20 Mbps;
AUI or regular 10BASE-T: 10 Mbps;
WAN:
Synchronous: Up to 10 Mbps;
Asynchronous (all except 4-wire and fiberoptic
models): 115.2, 57.6, 38.4, 28.8, 19.2, 14.4, or
9.6 Kbps (user-selectable, but see Section 2.2)
Clock Source — WAN: External only
9
REMOTE MINIBRIDGE
Fiber Specifications (Fiberoptic Models Only) —
Optical output power:
“-xMST” models: –18 dBm into 62.5/125 µm fiber;
“-xSST” models: –18 dBm into 9/125 µm fiber;
Receiver sensitivity: –32.5 dBm;
Dynamic Range: 20.5 dBm minimum;
Maximum Distance —
LAN:
AUI models: 50 m (164 ft.) to attached device;
10BASE-T models: 100 m (328.1 ft.) to attached device;
WAN:
“-x4W” models: 700 m (2296 ft.) over Category 5 or
screened/shielded Category 3 cable at 5 Mbps
(see Sections 3.1 and 3.3.4);
“-xMST” models: Approx. 3 km (1.8 mi.) depending
on fiber quality;
“-xSST” models: Approx. 20 km (12.4 mi.) depending
on fiber quality;
All other models: Standard maximum distance for
given interface
User Controls — (1) Top-mounted 4--position DIP switch
for filtering; compression; either SQE (AUI models)
or full- vs. half-duplex (10BASE-T models); and either
10 Mbps/normal distance vs. 5 Mbps/long distance
(4-wire models) or sync/async (all other models)
10
CHAPTER 1: Specifications
Indicators —
(4) Top-mounted LEDs:
WAN (lights yellow in response to WAN data activity),
LAN (all models: lights yellow in response to LAN
data activity; 10BASE-T models: lights green to show
link integrity),
COLL (lights red in response to LAN collision), and
PWR (lights green while unit is powered)
Connectors —
LAN:
Models with “-Axx” product-code suffix: DB15 male;
Models with “-Uxx” product-code suffix: Shielded
RJ-45 female;
WAN:
“-x24” models: DB25 female;
“-x35” models: DB25 female, proprietarily pinned for
V.35 (patch cable to M/34 included);
“-x36” models: DB25 female, pinned for TIA RS-530
(patch cable to DB37 included);
“-x53” models: DB25 female;
“-x21” models: DB25 female, pinned for TIA RS-530
(patch cable to DB15 included);
“-x4W” models: 5-screw terminal block;
“-xxST” models: (2) ST® female;
11
REMOTE MINIBRIDGE
CAUTION!
Although the Remote MiniBridge can operate on any
regulated 12-VDC power supply that provides at least
400 mA of current, using a different power supply from
the one the unit came with will void CE compliance for
the 4-wire and fiberoptic models.
MTBF — 506,000 hours
Temperature Tolerance — 32 to 122˚F (0 to 50˚C)
Humidity Tolerance — Up to 90% noncondensing
Power —
From desktop autosensing power supply:
Input: 100 to 250 VAC, 50 to 60 Hz;
Output: 12 VDC, at least 400 mA;
Consumption:
Fiberoptic models: 300 mA (3.6 watts) typical,
400 mA (4.8 watts) maximum;
All other models: 200 mA (2.4 watts) typical,
400 mA (4.8 watts) maximum
Size —
Fiberoptic models:
0.7"H x 2.1"W x 3"D (1.8 x 5.3 x 7.6 cm);
All other models:
0.7"H x 2.1"W x 2.7"D (1.8 x 5.3 x 6.9 cm)
12
CHAPTER 1: Specifications
Weight —
Fiberoptic models: 1.6 oz. (50 g);
All other models: 1 oz. (30 g)
13
REMOTE MINIBRIDGE
2. Introduction
The Remote MiniBridge (RMB) is a high-performance,
remote, self-learning Ethernet bridge. Its small size
and low cost make it ideal for cost-sensitive bridging
applications, as well as for LAN-extender or segmenter
applications.
The RMB automatically learns MAC addresses on the
LAN to which it is connected and only forwards frames
destined for another LAN. Its LAN table stores up to
10,000 addresses and is automatically updated.
Filtering and forwarding is performed at 14,880 pps
(packets per second), just shy of the maximum
theoretical wire-speed rate of 15,000 pps. The RMB’s
buffer can hold 256 frames with a throughput latency
of 1 frame. Alternatively, filtering can be disabled for
extender or segmenter applications.
14
CHAPTER 2: Introduction
2.1 LAN-Interface Overview
The Remote MiniBridge comes in either of two LAN
interfaces: 10BASE-T or 10BASE5 (AUI) Ethernet.
10BASE-T models can operate in full-duplex Ethernet
(20 Mbps). AUI models can’t do this, but they can draw
power directly from the AUI interface, so you might not
need to use an external power source. However, if you
want to drive AUI signals any distance, or if the AUI
port to which the RMB is attached doesn’t provide an
adequate amount of power, use the included external
power supply to override the AUI supply. On all models,
you can disable the Ethernet SQE test for hub or
repeater connections.
2.2 WAN-Interface Overview
The Remote MiniBridge is also available with any
of eight WAN interfaces—TIA RS-232 (ITU-TSS
V.24/V.28), ITU-TSS V.35, TIA RS-422/449 (ITU-TSS
V.36), TIA RS-530, ITU-TSS X.21, proprietary 4-wire,
multimode fiberoptic, or single-mode fiberoptic.
The RMB transmits and receives data synchronously
at up to 10 Mbps. Alternatively, all RMBs except for the
4-wire and fiberoptic models can communicate
15
REMOTE MINIBRIDGE
asynchronously at up to 115.2 Kbps if you tie some of the
unit’s DB25 pins to ground (see Table 2-1 below). The
RMB can internally generate seven standard asynchronous frequencies (9.6, 14.4, 19.2, 28.8, 38.4, 57.6, and
115.2 Kbps), or it can derive a different asynchronous
data rate by dividing by sixteen the frequency of a sync
signal on Pin 15. For example, if you want the RMB to
communicate asynchronously at 4800 bps, the device
attached to its WAN side has to provide a sync signal
at 4800 x 16 (= 76,800) bps on Pin 15.
Table 2-1. Grounding for asynchronous control.
Data Rate or
Feature
DB25 Pin 6
Grounded?
DB25 Pin 8
Grounded?
DB25 Pin 17
Grounded?
DB25 Pin 22
Grounded?
Follow ext. clock
(sync on Pin 15)
Yes
Yes
Yes
N/A
115.2 Kbps
Yes
Yes
No
N/A
57.6 Kbps
Yes
No
Yes
N/A
38.4 Kbps
Yes
No
No
N/A
28.8 Kbps
No
Yes
Yes
N/A
19.2 Kbps
No
Yes
No
N/A
14.4 Kbps
No
No
Yes
N/A
9.6 Kbps (default)
No
No
No
N/A
ACCM enabled
(default)
N/A
N/A
N/A
No
ACCM disabled
N/A
N/A
N/A
Yes
16
CHAPTER 2: Introduction
The Remote MiniBridge uses a variant of HDLC
framing for WAN communication, in accordance with
RFC 1662. In asynchronous mode, the RMB breaks up
the frames into 8-data-bit octets which are preceded by a
start bit and followed by a stop bit. To make this process
transparent (to achieve “frame transparency”), it
normally uses “octet stuffing”—it replaces any flag
sequence (0x7E), control-escape octet (0x7D), or other
single octet in its Async Control-Character Map (ACCM)
with two octets: the control-escape octet followed by the
original octet XORed with 0x20. The ACCM consists of
the first 32 characters in the ASCII character set (those
with octet values up to 0x20). You can disable ACCM
octet stuffing by tying Pin 22 of the RMB’s DB25
connector to ground (refer to Table 2-1 on the
previous page).
If you want to, you can also enable enhanced
compression, which increases data throughput by
stripping the padding bits from the 64-byte frames.
(When compression is disabled, frames are transmitted
as is.) See Table 3-1 on page 22.
17
REMOTE MINIBRIDGE
The RMB’s comprehensive LED display indicates LAN
and WAN activity, link integrity (on 10BASE-T models),
and power (see Chapter 4). The unit has four
conveniently located DIP switches for easy configuration
(see Section 3.1).
A typical application for the Remote MiniBridge
is shown in Figure 2-1 below.
Remote
MiniBridge
Remote
MiniBridge
Stackable
Ethernet Hub
Ethernet
Switch
Modem
Modem
Figure 2-1. A Remote MiniBridge application.
18
CHAPTER 3: Installation
3. Installation
3.1 Switch Setting
Refer to Table 3-1 on the next page as you set the
Remote MiniBridge’s top-mounted DIP switches.
3.2 LAN Interface
If your Remote MiniBridge is an AUI model, either plug
it directly into the DTE’s AUI port or attach it to the
DTE’s AUI port with a standard AUI cable.
If your Remote MiniBridge is a 10BASE-T model, use
either a straight-through-pinned or cross-pinned cable
to attach the unit to a device’s 10BASE-T port:
• Run straight-through cable to connect the RMB
to a hub or similar device.
• Run cross-pinned cable to connect the RMB
to a NIC, workstation, or similar device.
19
REMOTE MINIBRIDGE
Table 3-1. Switch Settings
Name (Default Setting)
Description
FDX (OFF)
(on 10BASE-T models)
Set to ON for full-duplex Ethernet.
Set to OFF for half-duplex Ethernet.
NOTE: This setting has no effect on WAN communication, which can always be simplex, half-duplex, or
full-duplex (the RMB transparently auto-adjusts).
or
SQE (OFF)
(on AUI models)
Set to ON to have the RMB transmit an SQE test
signal at the end of each frame.
Set to OFF to disable SQE so that RMB does not
transmit it. Set SQE OFF when you connect the
RMB to a hub or repeater.
FILTER (ON)
Set to ON to have the RMB transmit across the WAN
only those frames destined for another LAN, and
filter out all other frames.
Set to OFF to have the RMB transmit all frames that it
receives across the WAN. Disable filtering for LANextender or segmenter applications.
COMPR (ON)
Set to ON on the RMBs at both ends of a WAN link to
activate compression: The RMBs strip the padding
bits from frames they transmit across the link in
order to improve throughput.
Set to OFF to disable compression. Set COMPR OFF
when you have a Remote MiniBridge on one end of
a WAN link and some other device at the other end.
ASYNC (OFF)
(on most models, but has no
effect on fiberoptic models)
Set to ON to have the RMB transmit asynchronously
across the WAN link (see Section 2.2).
Set to OFF to have the RMB transmit synchronously
across the WAN link.
or
LONG (OFF)
(on 4-wire models;
see Section 3.3.4)
20
Set to ON to have the RMB transmit across the WAN
link at 5 Mbps in order to reach up to 700 m.
Set to OFF to have the RMB transmit across the WAN
link at 10 Mbps as far as 500 m.
CHAPTER 3: Installation
3.3 WAN Interface
3.3.1 RS-232 OR RS-530 MODELS
If you are attaching the Remote MiniBridge to:
• A DCE device with a DB25 male serial port: Securely
plug the RMB’s DB25 female WAN connector
directly into the device’s serial port.
• A DCE device with a DB25 female serial port:
Securely plug a M/M gender changer into the
device’s serial port, then plug the RMB’s DB25
female WAN connector directly into the gender
changer.
• A DTE device: You will need a special cable that
(a) has a DB25 male connector on the RMB end,
(b) has a connector that can mate with the DTE’s
serial-port connector on the DTE end, and
(c) is cross-pinned like a null-modem cable but
carries any necessary clock signal from the DTE
(call for technical support if you need such a
cable). Securely attach this cable to the RMB’s
WAN connector and to the DTE’s serial port.
Refer to the Appendix for the pinout of the RMB’s WAN
connector. Remember that for async WAN communication, you might have to tie some of the pins on the DB25
connector to ground; refer to Section 2.2.
21
REMOTE MINIBRIDGE
3.3.2 V.35, RS-449/V.36, OR X.21 MODELS
If you are attaching the Remote MiniBridge to:
• A DCE device: Securely plug the DB25 end of
the included adapter cable into the RMB’s DB25
female WAN connector. Plug the other end of the
cable into the device’s serial port. (If the genders
of the cable and device connectors are the same,
you’ll need to install a gender changer between
them.)
• A DTE device: You will either need to run both the
included adapter cable and a special cross-pinned
cable (see the “DTE device” paragraph on the
previous page) between RMB and the device’s
serial port, or you will need a special adapter
cable that performs both of these functions.
Call Black Box for technical support.
Refer to the Appendix for the pinouts of the RMB’s
WAN connector and of the included adapter cable.
Remember that for async WAN communication, you
might have to tie some of the pins on the DB25
connector to ground; refer to Section 2.2.
22
CHAPTER 3: Installation
3.3.3 FIBEROPTIC MODELS
Run duplex fiber cabling of the appropriate type
(62.5/125 for multimode or 9/125 for single-mode)
between your Remote MiniBridges. (Save the protective
caps for the RMBs’ fiberoptic connectors in case you
need to store or relocate the RMBs later.) Make sure
that the TX connector on each RMB is attached to the
RX connector on the other RMB.
3.3.4 FOUR-WIRE MODELS
Run 4-wire twisted-pair cabling between your Remote
MiniBridges. Keep these distance/data rates in mind:
• If you set the RMB’s top-panel LONG switch to
OFF: The RMB will transmit across the WAN link
at 10 Mbps, and you can run CAT5 or shielded/
screened CAT3 cable as far as 500 m (1640 ft.),
CAT3 UTP as far as 400 m (1312 ft.).
• If you set the LONG switch to ON: The RMB will
transmit across the WAN link at 5 Mbps, and you
can run CAT5 or shielded/screened CAT3 cable
as far as 700 m (2296 ft.), CAT3 UTP as far as
600 m (1968 ft.).
23
REMOTE MINIBRIDGE
To connect a cable to either RMB, take these steps,
referring to Figure 3-1 below:
CAUTION!
Do not apply power to the Remote MiniBridge until you
finish this procedure. The RMB could be damaged and
you could suffer a dangerous electrical shock.
Terminal
Block
One Wire Pair
Shield (One End Only)
One Wire Pair
TX–
TX+
FGND
RX–
RX+
Screw
Terminals
Figure 3-1. Attaching the cable to a 4-wire RMB.
1. Slip the included protective strain-relief boot over
the end of the wire, skinny end first, and slide it a
few inches up the wire.
24
CHAPTER 3: Installation
2. Strip off the last inch and a half or so of the cable’s
outer jacket, then strip the last quarter of an inch
or so of the component wires’ insulation.
3. Disconnect the RMB from any electrical power
source, including the LAN interface. Detach the
RMB’s 5-screw terminal block from the rest of the
RMB’s chassis.
4. Unwinding the wires as little as necessary, insert
the bare ends of one pair of the cable’s wires in
the terminal block’s TX– and TX+ (left-hand)
terminals and screw them down securely. Fasten
the other pair to the RX– and RX+ (right-hand)
terminals the same way. Make sure that TX– and
TX+ on each RMB are connected to RX– and
RX+ respectively on the other RMB.
If the cable is shielded, you can connect the
shield to the FGND (center) terminal of one
RMB only. (Do not attach the shield to the FGND
terminals of both RMBs—this could cause
potentially hazardous electrical “ground loops.”)
5. Verify that all wires are attached securely, then
carefully reattach the terminal block to the RMB.
6. Slide the strain-relief boot back to the end of the
cable and gently ease it over the terminal block.
25
REMOTE MINIBRIDGE
3.4 Power
Once you’ve connected the LAN and WAN cables to the
Remote MiniBridge, plug the output cable of the unit’s
power supply into its power jack. (If your RMB is an AUI
model, you might not need to use the external power
supply; see Section 2.1.) Then plug the power supply’s
input cable into the utility (mains) outlet. If the RMB’s
PWR LED lights as it should, the unit is ready for
continuous operation.
26
CHAPTER 4: Operation
4. Operation
The Remote MiniBridge operates completely
automatically. It gets its power from its external power
supply or (optionally, if it’s an AUI model) from the
AUI interface. During normal operation, the unit’s
PWR LED is continuously lit.
On 10BASE-T models, the green LAN LED should be
continuously lit if the 10BASE-T link between the RMB
and the attached device is OK. The RMB’s yellow WAN
and LAN LEDs may blink occasionally or be
continuously lit, depending on the amount of data
traffic. The COLL LED should blink occasionally.
If you ever need to change the settings of the RMB,
move its top-mounted four-position configuration DIP
switch as necessary (refer to Table 3-1 on page 22).
27
REMOTE MINIBRIDGE
5. Troubleshooting
5.1 Calling Black Box
If your Remote MiniBridge seems to be malfunctioning,
do not attempt to alter or repair the unit. It contains no userserviceable parts. Call Black Box Technical Support at
724-746-5500; the problem might be solvable over the
phone.
Before you call, make a record of the history of the
problem. We will be able to provide more efficient and
accurate assistance if you have a complete description,
including:
• the nature and duration of the problem;
• when the problem occurs;
• the components involved in the problem;
• any particular application that, when used,
appears to create the problem or make it worse;
and
• the results of any tests you might have already
performed.
28
CHAPTER 5: Troubleshooting
5.2 Shipping and Packaging
If you need to transport or ship your Remote
MiniBridge:
• Package it carefully. We recommend that you
use the original container.
• If the shipping is return- or repair-related, pack
the RMB, its power supply, and this manual
together. Contact Black Box to get a Return
Materials Authorization (RMA) number.
29
REMOTE MINIBRIDGE
Appendix: WAN Pinouts
The DB25 WAN connector that most of the Remote
MiniBridge models have is pinned out differently on
different models of the RMB, depending on which WAN
interface the model uses. RS-232 models use the normal
TIA RS-232-C pinout shown in the “RS-232” column of
Table A-1 on pages 34 and 35. RS-530 models use the
normal TIA RS-530 pinout shown in the “RS-530”
column. The RS-449 (V.36) and X.21 models also use
this pinout for the DB25 connector, but they include
adapter cables that patch the leads/signals shown in the
“RS-530” column to the matching leads/signals on DB37
and DB15 connectors, respectively; these are the pins
listed in the same row in the “RS-449” and “X.21”
columns. The V.35 models use the proprietary pinout
shown in the “V.35 (DB25)” column, but they include
an adapter cable that patches this to an M/34
connector, pinned out for standard V.35 as shown
in the “V.35 (M/34)” column.
NOTE: The “signals” named BAUD2, BAUD1,
BAUD0, and ACCM in Table A-1—on DB25 Pins 6, 8,
17, and 22 respectively—are leads you can use in async
mode to control the data rate and the octet-stuffing
30
APPENDIX: WAN Pinouts
function. (See Section 2.2.) Be aware that the X.21 and
V.35 adapter cables do not patch through all of these
leads, so some of them—the ones marked “N/A” instead
of “n BAUDX” or “n ACCM” in the table’s X.21 and V.35
(M/34) columns—aren’t available on the adapter
cable’s native X.21 and V.35 connectors. This means
that, if you need to run at certain data rates or turn off
the Async Control-Character Map, you might have to
build a cable directly to the RMB’s DB25 connector
in order to ground these leads.
31
32
1 SHIELD
1 SHIELD
7 SGND
2 TD (out)
N/A
3 RD (in)
N/A
4 RTS (out)
N/A
5 CTS (in)
N/A
6 BAUD2
8 BAUD1
15 TCLK (in)
N/A
101
102
103
104
105
106
[N/A]
[N/A]
114
15 TCLK A (in)
12 TCLK B (in)
8 BAUD1
6 BAUD2
5 CTS A (in)
13 CTS B (in)
4 RTS A (out)
19 RTS B (out)
3 RD A (in)
16 RD B (in)
2 TD A (out)
14 TD A (out)
7 SGND
RS-530
ITU-T. RS-232
V.24
CIRC.
5 TT A (in)
23TT B (in)
13 BAUD1
11 BAUD2
9 CS A (in)
27 CS B (in)
7 RS A (out)
25 RS B (out)
6 RD A (in)
24 RD B (in)
4 SD A (out)
22 SD B (out)
19 SG
1 SHIELD
RS-449
6 S A (in)
13 S B (in)
5 BAUD1
N/A
N/A
N/A
3 C A (out)
10 C B (out)
4 R A (in)
11 R B (in)
2 T A (out)
9 T B (out)
8G
1 SHIELD
X.21
Table A-1. WAN Pinouts
15 SCT A (in)
12 SCT B (in)
8 BAUD1
6 BAUD2
5 CTS (in)
N/A
4 RTS (out)
N/A
3 RD A (in)
16 RD B (in)
2 SD A (out)
14 SD B (out)
7 SGND
1 SHIELD
V.35
(DB25)
Y
AA
F
E
D
C
R
T
P
S
B
A
V.35
(M/34)
REMOTE MINIBRIDGE
22 ACCM
[N/A]
22 ACCM
17 BAUD0
[asy.] 17 BAUD0
29 ACCM
8 BAUD0
17 RCLK A (in) 8 RT A (in)
9 RCLK B (in)
26 RT B (in)
115
17 RCLK (in)
[sync] N/A
RS-449
RS-530
ITU-T. RS-232
V.24
CIRC.
N/A
N/A
N/A
N/A
X.21
Table A-1. WAN Pinouts (continued)
22 ACCM
17 BAUD0
17 SCR A (in)
9 SCR B (in)
V.35
(DB25)
N/A
V
V
X
V.35
(M/34)
APPENDIX: WAN Pinouts
33
REMOTE MINIBRIDGE
TRADEMARK USED IN THIS MANUAL
ST is a registered trademark of AT&T.
Any other trademarks mentioned in this manual are
acknowledged to be the property of the trademark owners.
34
NOTES
NOTES
© Copyright 1999. Black Box Corporation. All rights reserved.
1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax 724-746-0746
">