Black Box ME806A 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 2001
ME806A
ME806-C
ME807A
ME807-C
SHM-B Parallel-T
SHM-B Parallel-T Card
SHM-B Parallel-R
SHM-B Parallel-R Card
1
FCC AND IC 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 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.
2
SHM-B PARALLEL-T, SHM-B PARALLEL -R
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 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.
TRADEMARKS USED IN THIS MANUAL
BLACK BOX and the logo are registered trademarks of Black Box
Corporation.
IBM, PC/AT, and PS/2 are registered trademarks, and PC/XT is a trademark, of
International Business Machines Corporation.
Any other trademarks mentioned in this manual are acknowledged to be the property of the
trademark owners.
4
SHM-B PARALLEL-T, SHM-B PARALLEL -R
Contents
Chapter Page
1. Specifications....................................................................................................5
2. Introduction .....................................................................................................7
3. Installation....................................................................................................... 9
3.1 Standalone and Rackmount Versions .....................................................9
3.2 Connectors ................................................................................................9
3.3 Installation Procedure ..............................................................................9
3.4 LED Indicators ........................................................................................13
3.5 Rack Mounting........................................................................................14
3.6 Configuration..........................................................................................14
4. Troubleshooting ............................................................................................16
5
CHAPTER 1: Specifications
1. Specifications
Models: ME806A, SHM-B Parallel-T (standalone transmitter)
ME806-C, SHM-B Parallel-T (rackmount transmitter)
ME807A, SHM-B Parallel-R (standalone receiver)
ME807-C, SHM-B Parallel-R (rackmount receiver)
Transmission Distance:
Bit Rate (bps)
2400 4800 9600 19.2 kbps
Distance (miles) 5 3 2 1.1
NOTE
These specifications are valid for unshielded twisted-pair telephone cable
having 24 or 26 AWG connectors. Shielded twisted-pair cable will reduce
the distance to 1⁄3of the table value.
Line Interface: Proprietary balanced 4-wire
Indicators: RD and TD Green and Red = Data transmission.
Green = Mark (idle state).
Red = Error condition. Check cabling.
BUSY Red = Printer is not online or not ready to
receive data.
Off = Printer is ready to receive data and
cabling is installed correctly.
Connectors: Transmitter DB25 male, 4-screw terminal block
Receiver DB25 female, 4-screw terminal block
Enclosure: High-impact ABS plastic
6
SHM-B PARALLEL-T, SHM-B PARALLEL -R
Operating
Temperature: 32 to 112°F (0 to 45°C)
Operating
Humidity: 95% relative humidity, noncondensing
Power: 120 VAC ±10%, 60 Hz, 1 watts, wallmount
transformer (230 VAC ±10%, 50/60-Hz option available)
Size: 1.5"H x 4.3"W x 4.6"D (3.8 x 10.9 x 11.7 cm)
Weight: 1.3 lb. (0.6 kg) with transformer
7
CHAPTER 2: Introduction
2. Introduction
The SHM-B Parallel performs three functions:
• The SHM-B Parallel-T accepts parallel data from the PC, converts it to serial
data, and sends the serial data over twisted-pair cable to the SHM-B Parallel-R.
The SHM-B Parallel-R receives the serial data, converts it back to parallel data,
and sends it to the the parallel printer.
• The SHM-B Parallel-T accepts parallel data from the PC, converts it to serial
data, and sends the serial data over twisted-pair cable to the SHM-B. The SHM-
B receives the serial data, converts it to RS-232 specifications, and sends the
data to the RS-232 serial printer.
• The SHM-B accepts the RS-232 data from the PC, converts it to serial data, and
sends it over the twisted-pair cable to the SHM-B Parallel-R. The SHM-B
Parallel-R receives the serial data, converts it to parallel data, and sends it to
the parallel printer.
4-wire cable
Serial input
from PC
Parallel output
to printer
SHM-B Parallel-T
(ME806A)
SHM-B Parallel-R
(ME807A)
4-wire cable
Parallel input Serial output
SHM-B Parallel-T
(ME806A)
SHM-B
(ME800A-R2)
4-wire cable
Serial input
from PC
Parallel output
to printer
SHM-B
(ME800A-R2)
SHM-B Parallel-R
(ME807A)
8
SHM-B PARALLEL-T, SHM-B PARALLEL -R
The SHM-B Parallel performs data transmission at bit rates from 1200 to 19,200
baud. It can be configured for either 7- or 8-bit word length and Even, Odd, or
No parity. The SHM-B Parallel features advanced optically-isolated integrated
circuitry, which eliminates damaging ground-loop currents and substantially
reduces signal noise for improved data integrity.
The SHM-B Parallel transmitter/receiver pair requires only two twisted-pair wires
to transmit and receive data. Optimum performance is obtained with 24 or 26
AWG twisted-pair telephone cable, but nearly any twisted-pair cable can be used
with little or no performance degradation.
NOTE
When operating serial to parallel or parallel to serial, the serial device has
to run hardware flow control. Software flow control (X-ON/X-OFF, etc.) is
not supported.
9
CHAPTER 3: Installation
3. Installation
3.1 Standalone and Rackmount Versions
The SHM-B Parallel is available in a standalone version and a rackmount version.
The standalone transmitter and receiver are packaged in small, lightweight ABS
plastic cases and equipped with wallmount transformers, for use on a desktop or
shelf. The printed circuit card can be removed from the case and the transformer
discarded, enabling the card to be installed in a rack if desired. The rackmount
version slips easily into an 8- or 16-card rack or enclosure.
3.2 Connectors
Each unit is equipped with a DB25 connector and a 4-wire terminal block.
The DB25 connector conforms to the IBM®PC parallel interface pinout, using
the Centronics®interface protocol. The 4-wire terminal block is the serial interface
to the twisted-pair line.
3.3 Installation Procedure
Before installing the receiver or transmitter, make certain the unit is not plugged
into the power source, and the equipment that you are going to attach to them is
turned off.
Each unit is ready to use as it comes from the factory. No changes are necessary
when used as a modem set to transmit data from a parallel device to another
parallel device at distances of up to 1.1 mile (1.8 kg). However, for installations in
which the loop length exceeds 1.1 mile, data corruption may occur due to
excessive line noise and/or capacitance. In this case, reduce the transmission baud
rate, using the configuration procedure described in Section 3.6.
Installation is accomplished in the following three steps:
1. Connect Cabling
For installation, connect a 4-wire twisted-pair cable between the transmitter and
the receiver.
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