Black Box MX320A-HS User manual

NOVEMBER 2000
MX320A-HS MX320AE-HS
MX325A-HS MX325AE-HS
X.25 PAD-2
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: [email protected]
RESET
CH3
ERROR
POWER
CH2
CH1
SYNC DATA

1
FCC AND IC STATEMENTS, TRADEMARKS
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.
EN 55022 warning: This is a Class A product. In a domestic environment, it
might cause radio interference. If it does, the user might be required to take
adequate measures to correct the interference.
TRADEMARKS USED IN THIS MANUAL
BLACK BOX and the logo are registered trademarks of Black Box
Corporation.
Any other trademarks mentioned in this manual are acknowledged to be the property of the
trademark owners.

2
X.25 PAD-2
EUROPEAN UNION DECLARATION OF CONFORMITY
The manufacturer declares that the X.25 PAD-2 conforms to the following
EMC and safety 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.”
• EN 60950 (1992/3): “Safety of information technology equipment,
including electrical business equipment.”
The X.25 PAD-2 herewith complies with the requirements of
the EMC Directive 89/336/EEC. The product was tested in a typical
configuration.
Also, in accordance with EN 41003, the safety status of all ports on the
X.25 PAD-2 is declared to be SELV (Safety Extra Low Voltage).

3
UL STATEMENTS, SAFETY WARNING
UL Listing Requirements
IMPORTANT SAFETY INSTRUCTIONS
For North American Users
The X.25 PAD-2 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 X.25 PAD-2 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.
Safety Warning
Always observe standard safety precautions when you install,
operate, and maintain the X.25 PAD-2. Only qualified and
authorized service personnel should attempt to adjust,
maintain, or repair it; this should never be done by untrained
or unauthorized persons.

4
X.25 PAD-2
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.

5
NOM STATEMENT
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:
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.

6
X.25 PAD-2
Contents
Chapter Page
1. Specifications .............................................................. 7
2. Introduction ............................................................. 11
3. Installation ................................................................ 13
3.1 The Complete Package ..................................... 13
3.2 Site Requirements ............................................. 13
3.3 Setting the NOR/INI Jumper ........................... 14
3.4 Connecting Cables and Power .......................... 16
3.4.1 Channel 1 ................................................. 16
3.4.2 Channels 2 and 3 ..................................... 17
3.4.3 Power ........................................................ 18
4. Operation .................................................................. 19
4.1 The External Components ............................... 19
4.2 Operating Instructions ...................................... 22
4.2.1 Power ON .................................................. 22
4.2.2 Normal Operation .................................... 23
4.2.3 Power OFF ................................................ 23
5. Troubleshooting ....................................................... 24
5.1 Things to Check First ........................................ 24
5.2 Calling Black Box .............................................. 25
5.3 Shipping and Packaging .................................. 26

7
CHAPTER 1: Specifications
1. Specifications
Compliance — CE (EN55022, EN 50082-1, EN 60950)
Class A; FCC Class A, IC Class/classe A
Interfaces —
Channel 1 (to packet-switched synchronous link):
MX320 models: ITU V.35 proprietarily pinned on
DB25, DTE;
MX325 models: EIA/TIA RS-232/ITU V.24/V.28,
DTE;
Channels 2 and 3 (to local async devices): EIA/TIA
RS-232/ITU V.24/V.28 proprietarily pinned on RJ-45,
DCE
Protocols —
Channel 1: Synchronous 1988 ITU X.25 LAP-B or Frame
Relay; for Frame Relay, supports CCLM, LMI, and
ANSI PVC management protocols, as well as ANSI
T1.606, T1.617 Annex D, T1.618, and ITU Q.922
Annex A;
Channels 2 and 3: Asynchronous SLIP or X.28 (user-
selectable)
Clock Source — Channel 1: Internal or external for
receive and transmit paths, user-selectable

8
X.25 PAD-2
Data Rate —
Channel 1:
MX320 models: Up to 2 Mbps, user-selectable;
MX325 models: Up to 128 kbps, user-selectable;
Channels 2 and 3: 75 bps to 115.2 kbps, user-selectable
Data Format — Channels 2 and 3: 5, 6, 7, or 8 data bits;
even, odd, mark, space, or no parity; 1, 1.5, or 2 stop
bits; user-selectable
Flow Control — Channels 2 and 3: Hardware (DTR/CTS)
or software (X-ON/X-OFF), user-selectable
Other Characteristics for Channels 2 and 3 —
Log-on messages: Herald and bulletin, user-definable;
Command modes: ITU X.28 (with proprietary
extensions) and X.29;
Terminal handling: Enhanced, beyond the requirements
of ITU X.3
Packet Size — Up to 4 KB for X.25 or 8 KB for Frame Relay
Maximum Distance —
Up to 50 ft. (15.2 m) to attached devices;
MX320 models: If unbalanced control leads aren’t
required, transmission across 500 ft. (152.4 m) or
more might be possible to/from Channel 1 only

9
CHAPTER 1: Specifications
Memory — 512 KB RAM
User Controls —
Top-mounted reset button;
(1) Internal board-mounted jumper for power-up
settings
Indicators — (6) Top-mounted LEDs:
(1) POWER (lights green while unit is powered);
(1) ERROR (lights red if a hardware malfunction is
detected);
(1) SYNC (lights or flashes green to show status of
synchronization between linked PAD-2s);
(3) DATA (one for each channel—these light or flash
yellow in response to data activity on the
corresponding ports)
Connectors —
(1) Left-side-mounted DB25 female for channel 1 (patch
cable provided to M/34 female on MX320 models);
(2) Right-side-mounted RJ-45 female for channels 2 and 3;
(1) Front-mounted barrel jack for power
Temperature Tolerance — 32 to 122˚F (0 to 50˚C)
Humidity Tolerance — Up to 90% noncondensing