Black Box CL090A-F User manual

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INFORMATION
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FEBRUARY 1996
CL090A-F CL090AE-F
CL090A-M CL090AE-M
CL091A-F CL091AE-F
CL091A-M CL091AE-M
CL092A-F CL092AE-F
CL092A-M CL092AE-M
HS RS-232↔Current Loop
Converter Active
HS RS232↔Current
Loop Converter -
Active
TD
RD
PWR
+

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HS RS-232↔CURRENT LOOP CONVERTER ACTIVE
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 the Canadian
Department of Communications.
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 le ministère des Communications du Canada.
TRADEMARKS USED IN THIS MANUAL
AT&T is a registered trademark of American Telephone and Telegraph
Company.
Any other trademarks mentioned in this manual are acknowledged to be the
property of the trademark owners.

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HS RS-232↔CURRENT LOOP CONVERTER ACTIVE
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 parato 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.

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HS RS-232↔CURRENT LOOP CONVERTER ACTIVE
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 equio 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.

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HS RS-232↔CURRENT LOOP CONVERTER ACTIVE
Contents
1. Specifications.....................................................................................................5
2. Introduction ......................................................................................................6
2.1 Overview......................................................................................................6
2.2 Features.......................................................................................................6
3. Configuration....................................................................................................7
3.1 Setting the DCE/DTE Switch ....................................................................7
3.2 Setting the Active/Passive Switch ..............................................................8
4. Installation.......................................................................................................10
4.1 Twisted-Pair Wiring ..................................................................................10
4.1.1 Twisted-Pair Connection Using Terminal Blocks ........................10
4.1.2 Twisted-Pair Connection Using Modular Jacks ............................15
4.2 Completing the Installation.....................................................................16
Appendix A. RS-232C Pin Connections............................................................17
Appendix B. Block Diagram..............................................................................18

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HS RS-232↔CURRENT LOOP CONVERTER ACTIVE
Data Rates Up to 115.2 Kbps
Connectors RS-232 side—CL090A-F, CL091A-F, CL092A-
F, CL090AE-F, CL091AE-F, CL092AE-F:
DB25 female; CL090A-M, CL091A-M,
CL092A-M, CL090AE-M, CL091AE-M,
CL092AE-M: DB25 male
Current-Loop side—CL090A-F, CL090A-M,
CL090AE-F, CL090AE-M: Terminal block
with strain relief; CL091A-F, CL091A-M,
CL091AE-F, CL091AE-M: RJ-11; CL092A-F,
CL092A-M, CL092AE-F, CL092AE-M: RJ-45
Operation Transmitter is always active; receiver can be
configured as active or passive with a switch
Transmission Line 19- to 26-AWG twisted pair
Range 4 miles (6.4 km) on 24-AWG twisted pair
Interfaces Asynchronous, EIA RS-232, CCITT V.24 full
duplex, 20-mA current loop
Indicators TD, RD, PWR
Isolation 1500V RMS via opto-isolators
Operating Temperature 32° to 140°F (0° to 60°C)
Humidity 0 to 95%, noncondensing
Altitude Up to 15,000 feet (4570 m)
Power 9 VDC at 500 mA; 110 VAC/60 Hz or
220 VAC/50 Hz
Size 2.7"H x 0.7"W x 2.1"D (6.9 x 1.8 x 5.3 cm)
Weight 1.5 oz. (42.5 g)
1. Specifications

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HS RS-232↔CURRENT LOOP CONVERTER ACTIVE
2.1 Overview
The HS RS-232↔Current Loop Converter Active lets an asynchronous RS-232
device communicate with a passive 20-mA current-loop device. Equipped with
an external power supply, the Converter supports data rates up to 115.2 Kbps.
The HS RS-232↔Current Loop Converter Active transmitter is active and
must be connected to a passive receiver, and the HS RS-232↔Current Loop
Converter Active receiver can accommodate either a passive or active
transmitter.
Operating at full duplex, the HS RS-232↔Current Loop Converter Active
supports communication distances up to 4 miles (6.4 km) over two
unconditioned 24-AWG twisted pairs. To guard against data loss due to
ground loops, the Converter is equipped with 1500V RMS optical isolators on
the line side.
The HS RS-232↔Current Loop Converter Active connects directly to the RS-
232 interface using a male or female DB25 connector. An external DCE/ DTE
switch eliminates the need for a crossover cable on the RS-232 interface.
2.2 Features
•Full-duplex, asynchronous transmission over 4 wires.
•Data rates up to 115.2 Kbps.
•Optically isolated.
•Twisted-pair connection via terminal blocks, RJ-11, or RJ-45 jacks.
•External DCE/DTE switch.
•Receiver operates actively or passively; transmitter is active only.
•LEDs monitor transmit data, receive data, and power.
•DB25 male or female connectors on RS-232 side.
•Range to 4 miles (6.4 km) on 24-AWG twisted pair.
2. Introduction

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HS RS-232↔CURRENT LOOP CONVERTER ACTIVE
The HS RS-232↔Current Loop Converter Active is easy to use. The only
configuration necessary for operation is the proper setting of two switches:
the external DCE/DTE switch and the internal active/passive switch.
3.1 Setting the DCE/DTE Switch
The figure below shows the location of the DCE/DTE switch on the PC
board, as well as the location of the terminal block.
RCV G XMT
3. Configuration
Active/passive switch
Terminal Block
DCE/DTE Switch
AC Adapter
RCV
PWR
TX

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HS RS-232↔CURRENT LOOP CONVERTER ACTIVE
For your convenience, the Converter has an externally accessible DCE/DTE
switch (see the diagram below). If the RS-232 device connected to the
Converter is a modem or multiplexor (or is wired like DCE), set the switch to
“DTE.” The setting causes the Converter to behave like Data Terminal
Equipment, transmitting data on RS-232 pin 2 and receiving data on pin 3.
If the RS-232 device connected to the Converter is a PC, terminal, or host
computer (or is wired like DTE), set the switch to “DCE.” This setting causes
the Converter to behave like Data Communications Equipment, transmitting
data on RS-232 pin 3 and receiving data on pin 2. Remember, the switch
setting is always from the point of view of the HS RS-232↔ Current Loop
Converter Active, not the connected equipment.
3.2 Setting the Active/Passive Switch
The active/passive switch is used to control the mode of the receiver; it has no
control over the transmitter since the transmitter is fixed in the active mode.
To configure your HS RS-232↔Current Loop Converter Active receiver, you
first need to determine whether your device will be active or passive. If you are
going to use the HS RS-232↔Current Loop Converter Active receiver to
provide current for the loop, set the switch to the “active” position. If the HS
RS-232↔Current Loop Converter Active is to be used in an active loop, set
the HS RS-232↔Current Loop Converter Active receiver’s active/passive
switch to passive.
DCE DTE

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HS RS-232↔CURRENT LOOP CONVERTER ACTIVE
CAUTION
Never connect two active devices together. Your configuration
must be “active to passive” or “passive to active.”
Passive
Active
Active/Passive
Switch