Black Box Mini Driver-15 User manual

APRIL 1994
ME770A
Mini Driver-15
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]
Mini Driver-15
S/N

1
FCC STATEMENT
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 B 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.

2
MINI DRIVER–15
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
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.

4
MINI DRIVER–15
CONTENTS
Chapter Page
1.Specifications..........................................................5
2.Description .............................................................6
3.Installation..............................................................8
3.1 Using RJ-11 and RJ-45 Jacks .....................10
3.2 Installing the Strain-Relief Assembly.......13
Appendix..................................................................17
TRADEMARKS USED IN THIS MANUAL
AT&T®is a registered trademark of American Telephone and
Telegraph Company.
NCR®is a registered trademark of NCR Corporation.
Unisys®is a registered trademark of Unisys Corporation.
Any other trademarks mentioned in this manual are
acknowledged to be the property of the trademark owners.

5
CHAPTER 1: Specifications
1. Specifications
Protocol — Asynchronous
Speed — Up to 19.2 kbps (no strapping)
Distance — Wire Gauge
Speed (bps) 19 24 26
19,200 2.5 mi (4.0 km) 1.8 mi (2.9 km) 1.2 mi (1.9 km)
9600 5.5 mi (8.9 km) 3.7 mi (6.0 km) 2.5 mi (4.0 km)
4800 7.5 mi (12.0 km) 5.0 mi (8.0 km) 3.0 mi (4.8 km)
2400 8.5 mi (13.7 km) 5.6 mi (9.0 km) 3.7 mi (6.0 km)
1200 9.0 mi (14.5 km) 6.2 mi (10.0 km) 4.3 mi (6.9 km)
Surge Protection — 600W power dissipation at 1 ms and
response time less than 1.0 picoseconds
Control Signals — DSR and DCD follow DTR from the
terminal (DTE). CTS follows RTS from the terminal
(DTE)
Operation — 4-wire unconditioned twisted-pair, full
duplex
Transmit Level — -6 dBm
Connectors — (1) DB15 male or female; (1) S-screw
terminal block
Power — No power required; uses ultra-low power (5 volts
required) from EIA data and control signals: Pins 1, 2, 4,
10, and 12 in DCE mode (the Mini Driver does not
operate in DTE mode)
Size — 2.5"H x 1.2"W x 0.75"D (6.4 x 3 x 1.9 cm)
Temperature — 32 to 140°F (0 to 60°C)
Humidity — 95% non-condensing

6
MINI DRIVER–15
2. Description
The Mini Driver–15 lets you connect RS-232 devices
equipped with DB15 connectors, including Unisys®
(Sperry) 5000 and the NCR®“tower” series.
It features built-in transformers that eliminate noise
and ground loops, so you can link devices between
buildings.
At a range of 2.5 miles (4 km) on 19-AWG wire, the
Driver operates full-duplex at speeds up to 19.2 kbps
over two twisted-pair wires. Range can be extended
up to nine miles (14.5 km) at 1200 bps.
An external DCE/DTE switch lets you connect any
device without opening the Driver. Three enclosure
options allow terminations via RJ-11, RJ-45, or
terminal block. A strain-relief feature prevents thin
twisted-pair wires from breaking or pulling loose.
The MSP model features custom-made transformers
and transorbs for DC isolation and high-level surge
protection. It features the latest in bidirectional
clamping transient suppressors to protect itself and
connected equipment from harmful transient
discharges.
Note: The Line Driver 15 must be used in pairs.

7
CHAPTER 2: Description
Features
• Eliminates ground loops caused by ground-
potential differences in power systems.
• Features DC isolation between connected devices.
• Includes an external DCE/DTE switch.
• Housed in a small-size case (3/4-inch or 1.9-cm) for
closely spaced computer ports.
• Uses modular plugs or terminal posts.
• Supports speeds up to 19.2 kbps.
• Uses surface-mount technology.
• Made in the U.S.A.

8
MINI DRIVER–15
3. Installation
Note: These drivers work in pairs. You need one at each end of a 4-
wire telephone cable.
Proceed as follows to install the Mini Driver–15 units:
1. If your Driver features RJ-11 or RJ-45 modular jacks,
refer to Section 3.1. Be sure that the wiring between
the Drivers makes the connections shown in
paragraph 5. Now skip to paragraph 7.
2. If your Driver does not feature modular jacks,
open the unit and connect one pair of wires in the
telephone cable to XMT (Transmit) on the
terminal block. Be careful to observe polarity.
(The wire connected to XMT+ must be connected
to RCV+ in the other unit. The wire connected to
XMT- must be connected to RCV- in the other
unit.)
3. Connect the other pair of wires in the telephone
cable to RCV (Receive). Again, be careful to
observe polarity.
4. If there is a shield around the telephone cable, it
may be connected to G on the terminal block. We
recommend that you connect the shield only at
the computer end to avoid ground loops. A
ground wire is not necessary for proper operation.
5. When you finish connecting the telephone line to
units at both ends, it should look like this:

9
CHAPTER 3: Installation
6. Insert the connector hardware on each side of the
Driver. Snap the unit together. See Section 3.2.
7. Plug the Driver directly into a mating RS-232C
connector on your terminal or computer. Tighten
the two captive connector screws.
1 - Blue
2 - Orange
3 - Black
4 - Red
5 - Green
6 - Yellow
7 - Brown
8 - Slate
1 - Blue
2 - Yellow
3 - Green
4 - Red
5 - Black
6 - White
XMT+
XMT-
G
RCV-
RCV+
- - - - - - - - -
G
RCV-
- - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - RCV+
To Shield (Optional)
- - - - - - - - - - - - - - - - - - - - - XMT-
- - - - - - - - - - - - - - - - - - - - - XMT+
One Pair
One Pair
G

10
MINI DRIVER–15
3.1 Using RJ-11 and RJ-45 Jacks
RJ-11 jacks on the Driver are prewired for a standard
AT&T®wiring environment. To be sure you have the
right wiring, use these tables as guides.
RJ-11 Signal RJ-45 Signal
1...............GND* 1...............N/C
2...............RCV- 2...............GND
3...............XMT+ 3...............RCV-
4...............XMT- 4...............XMT+
5...............RCV+ 5...............XMT-
6...............GND 6...............RCV+
7...............BND
8...............N/C

11
CHAPTER 3: Installation
Proper crossing of pairs between the two modems is
as follows:
Signal Pin # Color** Color Pin # Signal
GND* 1 Blue .................White 6 GND*
RCV- 2 Yellow ..............Red 4 XMT-
XMT+ 3 Green...............Black 5 RCV+
XMT- 4 Red ..................Yellow 2 RCV-
RCV+ 5 Black ................Green 3 XMT+
GND 6 White ...............Blue 1 GND*
* Connection to ground is optional.
** These are standard AT&T color codes. Your colors may be
different.
If your RS-232 application requires you to connect
two pairs of bar wires to the Driver, you will need to
open the case to access the terminal blocks. The
following instructions tell you how to open the case,
connect the bar wires to the terminal block, and
fasten the strain relief in place, so that the wires
won’t pull loose.

12
NAME
Gently open the unit by inserting a screw driver
between the DB25 connector and the lip of the
plastic case. You don’t have to worry about breaking
the plastic, but be careful not to bend the D-sub
connector.
When the unit is open, you’ll be able to see terminal
blocks located at the rear of the PC board.

13
CHAPTER 3: Installation
3.2 Installing the Strain-Relief Assembly
1. Strip the outer insulation from the twisted-pair
wires about one inch (2.5 cm) from the end.
2. Strip back the insulation on each of the four
twisted-pair wires about 1/4inch (0.6 cm).

14
MINI DRIVER–15
3. Insert the proper terminal post and tighten the
screw. Be sure to use one pair for transmit signals
(XMT+ and XMT-) and the other pair for receive
signals (RCV+ and RCV-).
Note: Terminal-post locations may vary on different versions.
4. Place the two halves of the strain-relief assembly
on either side of the telephone wire and press
together very lightly. Slide the assembly so that it
is about 2 inches (5 cm) from the terminal posts
and press together firmly.

15
CHAPTER 3: Installation
5. Insert the strain-relief assembly, with the wire
going through it, into the slot in the bottom half
of the modem case. Seat it into the recess in the
case. If a telephone wire is too thin to be held by
the strain-relief assembly, use tape to increase its
diameter. If the wire is too large, it may be
necessary to drill out the strain relief slightly.
6. Bend the top half of the case and place it over the
strain relief assembly. Do not snap the case
together yet.

16
MINI DRIVER–15
7. Insert one captive screw through a saddle washer.
Insert the captive screw with the washer on it
through the hole in the DB25 end of the case.
Snap that side of the case closed. Repeat the
process for the other side.

17
APPENDIX
Appendix
CTS RTS
DTR
CD TD RD DSR
POWER
SUPPLY
XMT -
XMT +
RCV +
RCV -
TRANSFORMER
ISOLATION
TRANSFORMER
ISOLATION
1 9 3 2
10 12
4
DATA
+V
-V
INVERTING
AMPLIFIER
SCHMITT
TRIGER
ACTIVE FILTERS
( 2 STAGES )
TRANSIENT
SUPPRESSION
DATA TRANSIENT
SUPPRESSION
AMPLIFIER
( A = -1.5 )
o
SIGNAL CLAMPED TO
1 VOLT PK-PK
SG 11
GND
+V
Fig. A-1. This block diagram shows the internal functions of the Mini Driver–15.

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax [phone]
© Copyright 1994. Black Box Corporation. All rights reserved.