JUNE 2005
USB Micro Extender
ACU4001A
ACU4201A
ACU4222A
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THE SERVSWITCH√ FAMILY
Welcome to the ServSwitch™ Family!
Thank you for purchasing a BLACK BOX® ServSwitch™ Brand USB Micro Extender
model! We appreciate your business, and we think you’ll appreciate the many ways that your
enhanced extension system will save you money, time, and effort.
That’s because our ServSwitch family is all about breaking away from the traditional,
expensive model of computer management. You know, the one-size-fits-all-even-if-it-doesn’t
model that says, “One computer gets one user station, no more, no less.” Why not a single
user station (monitor, keyboard, and mouse) for multiple computers—even computers of
different platforms? Why not a pair of user stations, each of which can control multiple
computers? Why not multiple user stations for the same computer?
With our ServSwitch products, there’s no reason why not. We carry a broad line of robust
solutions for all these applications. Do you have just two PCs, and need an economical
alternative to keeping two monitors, keyboards, and mice on your desk? Or do you need to
share dozens of computers, including a mix of IBM® PC, RS/6000®, Apple® Macintosh®,
Sun Microsystems®, and SGI™ compatibles among multiple users with different access
levels? Does your switch have to sit solidly on a worktable and use regular everyday cables?
Or does it have to be mounted in an equipment rack and use convenient many-to-one cables?
No matter how large or small your setup is, no matter how simple or how complex, we’re
confident we have a ServSwitch system that’s just right for you.
The ServSwitch™ family from Black Box—the one-stop answer for all your KVM-switching
needs!
This manual will tell you all about your new ServSwitch™ Brand USB Micro Extender,
including how to install, operate, and troubleshoot it. For an introduction to the Extender, see
Chapter 2. The Extender product codes covered in this manual are:
ACU4001A
ACU4201A
ACU4222A
1
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Copyrights and Trademarks
©2005. All rights reserved. This information may not be reproduced in any manner without
the prior written consent of the manufacturer.
Information in this document is subject to change without notice and the manufacturer shall
not be liable for any direct, indirect, special, incidental or consequential damages in
connection with the use of this material.
All trademark and trade names mentioned in this document are acknowledged to be the
property of their respective owners.
Disclaimer
While every precaution has been taken in the preparation of this manual, the manufacturer
assumes no responsibility for errors or omissions. Neither does the manufacturer assume any
liability for damages resulting from the use of the information contained herein. The
manufacturer reserves the right to change the specifications, functions, or circuitry of the
product without notice.
The manufacturer cannot accept liability for damage due to misuse of the product or due to
any other circumstances outside the manufacturer’s control (whether environmental or
installation related). The manufacturer shall not be responsible for any loss, damage, or injury
arising directly, indirectly, or consequently from the use of this product.
Cautions and Notes
The following symbols are used in this guide:
CAUTION. This indicates an important operating instruction
that should be followed to avoid any potential damage to
hardware or property, loss of data, or personal injury.
NOTE. This indicates important information to help you make the best use
of this product.
2
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FCC/CDC STATEMENTS
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 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.
Shielded PC-equipment cables must be used with this equipment to maintain compliance with
radio frequency energy emission regulations and ensure a suitably high level of immunity to
electromagnetic disturbances.
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.
3
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SERVSWITCH√ BRAND USB MICRO EXTENDER FAMILY
EUROPEAN UNION DECLARATION OF CONFORMITY
WARNING!
This is a class A product. In a domestic environment, this product may cause radio
interference, in which case the user may be required to take adequate measures.
This product complies with the following harmonized standards:
EN55022:1998, EN55024:1998, EN61000-3-2:2001,
EN61000-3-3:2000, EN60950-1:2000
When used in environments that have high levels of electromagnetic interference or excessive
power ground noise, you may experience disturbances to video and/or data transmission. If
this is the case, please refer to the Troubleshooting section of the User Guide for further
information, or contact Technical Support.
To maintain compliance, only use cables supplied (or recommended) for use with this
product. In electrically noisy environments, the use of shielded (STP/FTP) rather than
unshielded (UTP) interconnection cable is recommended.
4
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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 pedestals 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.
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.
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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
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SAFETY PRECAUTIONS AND INSTALLATION GUIDELINES
Safety Precautions and Installation Guidelines
To ensure reliable and safe long-term operation please note the following installation
guidelines:
•
•
•
Do not use to link between buildings.
Only use in dry, indoor environments.
If the building has 3-phase AC power, try to ensure that equipment connected to the
Local and Remote units is on the same phase.
•
•
•
Try not to route the CATx link cable alongside power cables.
Ensure that the system connected to the Local unit is connected to power ground.
Ensure that the monitor connected to the Remote unit is connected to power ground and
does not use an isolated power supply.
•
The Remote unit and any power supplies can get warm. Do not situate them in an
enclosed space without any airflow.
•
•
•
Do not place the power supply directly on top of the Remote unit.
Do not obscure the Remote unit’s ventilation holes.
This product is not suitable for use in isolated medical environments.
To safeguard against personal injury and avoid possible
damage to equipment or property, please observe the
following:
•
Only use power supplies originally supplied with the
product or manufacturer-approved replacements. Do not
attempt to dismantle or repair any power supply. Do not
use a power supply if it appears to be defective or has a
damaged case.
•
•
Connect all power supplies to grounded outlets. In each
case, ensure that the ground connection is maintained
from the outlet socket through to the power supply’s AC
power input.
Do not attempt to modify or repair this product, or make
a connection from the CATx link interface (RJ45) to any
other products, especially telecommunications or
network equipment.
7
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SERVSWITCH√ BRAND USB MICRO EXTENDER FAMILY
Contents
1. Quick Setup
2. Overview
9
10
10
10
12
13
14
15
2.1
2.2
2.3
2.4
2.5
2.6
Introduction
Glossary
Features
Product Range
Compatibility
How to Use This Guide
3. Installation
16
16
17
18
21
3.1
3.2
3.3
3.4
Package Contents
Interconnection Cable Requirements
Remote Unit Installation
Local Unit Installation
4. Troubleshooting
24
24
25
26
26
27
4.1
4.2
4.3
4.4
4.5
Video
USB
Audio
Serial
General Questions
Appendix A: Example Applications
Appendix B: Rack Mount Options
Appendix C: Audio/Serial Ports
Appendix D: Calling Black Box
Appendix E: Specifications
28
32
33
35
36
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QUICK SETUP
1. Quick Setup
This section briefly describes how to install your USB Micro extender system. Unless you are
an experienced user, we recommend that you follow the full procedures described in the rest
of this manual.
Set Video Distance DIP Switches
See Setting the
Set DIP switches on base of Remote Unit to position for
Cable Length DIP
Interconnect cable length:
Switches on page
18.
15-75ft (5-25m)
75ft-150ft (25-50m)
OFF (default)
ON
DIP Switch 1: Primary Interconnect (channel 1)
DIP Switch 2: Interconnect 2 (ACU4201A & ACU4222A only)
Connect Remote Unit and devices
Connect Remote Unit to monitor, USB and audio/serial
devices (if present). Connect 5V power supply.
See Connecting
the Remote Unit on
page 19.
Connect Local Unit to CPU
Connect Local Unit to CPU video, USB and Audio/Serial
ports (if used).
See Local Unit
Installation on page
21.
Connect Local monitor(s) to video output(s) on Local Unit.
Note. If you intend to connect the Local Unit to an external
USB hub, ensure that it is self-powered. If not, you will need
an additional 5V PSU for the Local Unit (not supplied).
See Interconnection
Cable Requirements
on page 17.
Connect Local and Remote Units
Connect extender units with up to 150ft (50m) of compatible
CATx interconnect cable.
Use LEDs on
Power Up
Interconnect ports to
check operation (see
pages 20 and 23).
Power up the CPU.
Switch on the Remote Unit power supply.
Auto-adjust flat panel monitors
9
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SERVSWITCH√ BRAND USB MICRO EXTENDER FAMILY
2. Overview
2.1 Introduction
The ServSwitch√ Brand USB Micro Extender Series enables high-resolution video, USB,
stereo audio, and serial port signals to be communicated up to 150ft (50m) over Category 5,
5e, 6 or higher (CATx) cable.
A basic USB extension system comprises a Local unit (transmitter) and a Remote unit
(receiver). The Local unit connects directly to the computer (or a USB Hub) using the
supplied cable(s). The user console (consisting of monitor, keyboard, mouse and other
devices) attaches to the Remote unit. All Local Units in the USB Micro Extender Series have
video output ports, allowing a second user console at the CPU (using further CPU/Hub ports).
The Remote and Local units communicate video and data information along the connecting
CATx cable (see Figure 1).
Within the product range, models are available with:
•
Audio and serial transmission: bi-directional stereo audio (16-bit digitized) and
transparent serial COM port (to 19.2Kbps).
•
Multiple video channels: single and dual heads.
2.2 Glossary
The following terms are used in this guide:
CATx
PSU
Any Category 5, 5e, 6 or higher cable.
Desktop power supply.
KVM
Keyboard, Video and Mouse.
Console
A keyboard, monitor, and mouse, plus optional USB/serial/audio
devices.
Dual Access
Single Head
Dual Head
A system allowing connection of Local and Remote user consoles.
An extender system that supports one monitor.
An extender system that supports two monitors.
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OVERVIEW
CPU
Local Video Outputs
Local Unit
USB and Video extension over
CATx cables up to 150ft (50m).
Remote Unit
5V PSU
Serial and Audio
Dual Video Support
ACU4201A, ACU4222A only
Transmission
ACU4222A only
USB Devices
Remote Console
Figure 1
USB Micro Extender System
11
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SERVSWITCH√ BRAND USB MICRO EXTENDER FAMILY
2.3 Features
The ServSwitch√ Brand USB Micro Extender Series offers the following features:
•
Transparent USB 2.0 Extension (low/full speed only)
Transparently extends most USB peripherals.
Remote unit has integral 4-port USB hub.
•
•
Supports high video resolutions for use with TFT displays
1600x1200@75Hz over 150ft (50m)
Emulated VESA DDC (Display Data Channel)
Extender Local Unit emulates a universal monitor
Ensures maximum compatibility with multi-head graphics cards
DDC emulation on all video channels
•
Local Video Output
Local video output on all video channels
Allows dual-access operation when a local USB keyboard and mouse are connected
directly to the CPU (or via a hub)
•
•
Single and Dual-Head Video Support
One CATx cable required per channel
Transparent serial port (on certain models)
Enables any serial device to be extended (up to 19.2K Baud). The serial port may be
used to extend one device (requiring handshaking lines), or up to three simple serial
devices (no handshaking).
•
•
Bi-directional stereo audio support (on certain models)
16-bit digitized high-quality, low-noise audio extension.
Local unit powered by USB
Local unit takes power directly from USB connection. Optional 5V PSU may be
connected for video only applications or when USB power is insufficient.
•
External PSU Overvoltage Protection
Remote or Local unit will not operate if an incorrect (>5V) PSU is connected.
•
•
•
Status indicator LEDs on each RJ45 port
Small footprint chassis
Rack mount option
Plate available to mount three units across 1U.
•
•
Surge protection on each RJ45 port
CPU cables included
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OVERVIEW
2.4 Product Range
There are three products in the range:
Single Video Channel Kit (Standard)
ACU4001A
Single Video Channel, Transparent USB
Local Unit + Remote Unit
Dual Video Channel Kit (Standard)
ACU4201A Dual Video Channels, Transparent USB
Local Unit + Remote Unit (Dual Video)
Dual Video Channel Kit (Audio)
ACU4222A Dual Video Channels, Transparent USB,
Serial, Stereo Audio
Local Unit + Remote Unit (Dual Video)
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SERVSWITCH√ BRAND USB MICRO EXTENDER FAMILY
2.5 Compatibility
Interface Compatibility
•
USB: Transparent USB 2.0 Compliant link (Low/Full speed only)
Extender appears as a self-powered USB hub to the CPU.
Remote Unit contains integral USB hub with 4-ports. The extender will operate through
USB 2.0 Host Controllers. However, the speed will be restricted to that of a USB 1.1
hub (12Mb/s).
Any device that absolutely requires the high-speed mode of USB 2.0
will not be compatible with the USB Micro Extender.
•
•
Audio: Input and output are line-level. Amplified speakers are required. A microphone
may be directly connected to the Remote unit (optional pre-amplification).
Serial: Transparent up to 19.2K Baud (38.4K operation may be possible with some
devices). The following serial signals are extended: TX, RX, RTS, CTS, DTR, DSR. In
rare cases, a wiring adaptor may be required to transfer RI and DCD.
•
Video: VGA to UXGA. Separate or composite sync.
Emulated DDC for each video channel. Local Unit reports as monitor capable of all
resolutions and refresh rates normally used with this product. For non-standard
resolutions, choose the monitor manually through the operating system, and set to ignore
DDC.
Extender Compatibility
ServSwitch√ Brand USB Micro Extenders are not compatible with existing ServSwitch√
standalone and rack hub CAT5 extenders. Consult Technical Support for information about
compatibility with other ServSwitch√ products.
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OVERVIEW
2.6 How to Use This Guide
This guide describes the installation and configuration of the ServSwitch√ Brand USB Micro
Extender Series. Although the connection and operation of the system is relatively
straightforward, you should consider the following before getting started:
Connection & Compatibility
Each Extender kit contains all the cables required to connect the Local unit to your PC or
KVM switch. The Remote monitor(s), USB devices and any audio and serial equipment
connects directly to the Remote unit.
For information about connection and installation, see Installation, page 16.
Interconnection Cable
You will need CATx (any category 5, 5e, 6 or higher) cable, terminated with RJ45 plugs, to
connect the Local and Remote units (see Interconnection Cable Requirements, page 17).
Adjusting Video
Video signals can become distorted when transmitted over CATx cables. To get the best from
your extender system, it is essential that you:
•
Set the Cable Length DIP switches on the Remote unit correctly (see Setting the Cable
Length DIP Switches on page 18).
•
Use low skew CATx cable.
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3. Installation
For first-time users, we recommend that you carry out a test placement, confined to a single
room, before commencing full installation. This will allow you to identify and solve any
cabling problems, and experiment with the USB extender system more conveniently.
3.1 Package Contents
You should receive the following items in your extender package. If anything is missing,
please refer to Appendix F to obtain Technical Support.
•
•
•
•
Extender Remote unit.
5-VDC universal power supply for Remote unit.
Extender Local unit.
USB/Video CPU cable (1.0m) with USB connector and VGA video (HD15 M-F)
connector.
•
•
•
CPU video cable (1.0m) with VGA video (HD15 M-F) connector.
Models: ACU4201A and ACU4222A only.
Serial cable (DB9 M-F connectors, 1:1 connections).
Models: ACU4222A only.
Two stereo audio cables (3.5mm stereo plugs).
Model: ACU4222A only.
•
•
IEC AC Power Cord.
User Guide.
16
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INSTALLATION
3.2 Interconnection Cable Requirements
To connect the Local and Remote units you will need CATx (any category 5, 5e, 6 or higher)
cable terminated with RJ45 plugs.
Interconnect cables must be solid-core type. Stranded patch cable will give poor results over
longer distances. The pairing of the cable and pinning of its connectors should normally be in
accordance with EIA-568B (see below).
One CATx cable is required for each video channel.
•
The Primary interconnect cable connects INTERCONNECT Port 1 on the Local and
Remote units. This carries the main video channel and USB data.
•
The Secondary interconnect cable connects to INTERCONNECT Port 2 on the Local
and Remote units. This carries the additional video channel on dual-head units and/or
audio/serial data.
Technical Note: Although suitable for use with UTP cable, it is
recommended that shielded STP/FTP cable is used with this product if
possible, especially in electrically noisy environments. When shielded cable
is used, it is most important to ensure that shield connectivity is maintained
between the Extender units.
Cable Pinning/Pairing
The following table illustrates which RJ45 connector pins the extenders use for various
signals. It also details the standard EIA-568B wiring scheme that is recommended for most
installations.
Looking into the RJ45 socket on a Remote unit, Pin 1 is on the right and Pin 8 on the left.
Pin
Color (EIA-568B)
Signal
1
2
White/Orange
Orange/White
Blue Video
3
6
White/Green
Green/White
Green Video
4
5
Blue/White
White/Blue
Red Video
Data
7
8
White/Brown
Brown/White
EIA-568A wiring can also be used. Contact Technical Support for details.
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SERVSWITCH√ BRAND USB MICRO EXTENDER FAMILY
3.3 Remote Unit Installation
Setting the Cable Length DIP Switches
If your application uses CATx cable less than 25m in length, you can continue to the next
section.
Micro Extender Remote units incorporate video equalization circuitry, allowing you to
compensate for the loss in image quality that occurs when video signals are transmitted along
CATx cables. At the factory, Remote units are configured to optimize the video signals for
Interconnect cables up to 75ft (25m) in length.
If you intend to use cables of 75-150ft (25-50m) in length:
1. Locate the DIP switches on the underside of the Remote unit. DIP switch 1 is used for
video channel 1, DIP switch 2 for video channel 2.
2. Set the DIP Switches as follows:
Interconnect Cable Length
DIP Switch Position
(ft)
(m)
15 – 75
75 – 150
5 – 25
25 – 50
OFF (default)
ON
If you are carrying out a test placement prior to final installation, set the DIP switch to
the position appropriate to the test cable’s length. When your tests are complete, set the
DIP switch to the position appropriate for the CATx cable length used in the full
installation.
Technical Note: The video compensation does not adjust skew. Although
skew (color separation) can be an issue on some CATx cables, it would
not normally be observed on cables <150ft (50m). Even so, we still
recommend the use of low skew cables with USB Micro Extenders. You
can test for skew by viewing the online test card at:
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INSTALLATION
Connecting the Remote Unit
To install a Remote unit:
1. Connect your monitor, USB and other devices to the Remote unit as shown in Figure 2
(single and dual-head units).
If additional USB hubs are attached to the extender, the maximum
extension distance could be reduced (due to the delay imposed by each
hub). For each connected hub, you may lose up to 30ft (10m) of
extension distance. Note: any USB device to which additional USB
peripherals may be attached is a USB hub (e.g. an Apple® USB
keyboard).
2. If appropriate, connect audio equipment and serial devices. Connect the audio cables as
follows:
RemoteUnit
Audio Device
Audio Out
Speakers
Audio In (MIC)
Microphone
See Appendix C: Audio/Serial Ports, page 33 for further information.
3. Connect the Primary CATx cable to the INTERCONNECT (1) socket on the front of the
Remote unit. For dual head systems, connect an additional CATx cable to
INTERCONNECT (2) (see Figure 3).
4. Connect the 5V power supply to power the unit.
Only use the power supply originally supplied with this
equipment or a manufacturer approved replacement.
5. If you are using a flat panel TFT monitor, you must adjust the clock and/or phase,
either manually or by using auto-adjust. Refer to the manual supplied with your monitor.
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SERVSWITCH√ BRAND USB MICRO EXTENDER FAMILY
ACU4222A only
Connect to speakers and
microphone.
Connect to serial device, such as
a touch screen.
Connect to second monitor.
Connect to
primary
monitor.
Connect to
USB
devices.
Connect
supplied 5V
PSU.
ACU4201A, ACU4222A only
All Remote Units
Figure 2
Remote Unit – rear view
All Remote Units
ACU4201A, ACU4222A only
INTERCONNECT 1 – carries
primary video and USB signals.
INTERCONNECT 2 – carries secondary video
signal and audio/serial data (ACU4222A only).
Status
OFF
Yellow LED*
No data transfer between Local and
Remote Units: not connected, or
Remote Unit not powered
Green LED
Remote Unit not powered, or
in an over-voltage (>5.6V
condition
ON
Integral USB Hub functioning correctly
(enumerated and not suspended).
Remote Unit powered
* Yellow LED active on primary INTERCONNECT socket (Channel 1) only
Figure 3
Remote Unit - front view
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INSTALLATION
3.4 Local Unit Installation
To install a Local unit:
1. It is recommended that the PC and other devices are switched off before connection.
2. Using the supplied CPU video/USB cable, connect the Local unit to the CPU as shown
in Figure 4.
We recommend that the Local Unit is connected directly to a CPU
USB port (Root Hub). If the Local Unit has to be connected through an
external hub, you should ensure the hub is self-powered (not bus
powered), or connect a 5V PSU (500mA) to the Local Unit.
3. If you want local access to the CPU, connect the video output(s) on the Local unit to
suitable monitors. Connect a USB mouse and a USB keyboard directly to other USB
ports on the CPU or a connected hub.
4. If you have an audio and serial enabled system, connect the audio cables between the
computer and Local unit as follows:
Computer
Local Unit
Audio Out (green)
Audio In
Audio In/Microphone (pink/blue)
Audio Out
5. If appropriate, connect the supplied serial cable between the serial port on the computer
and the Local unit.
6. For single video units, connect the CATx cable to the INTERCONNECT socket on the
front of the Local unit. For dual-head systems, connect the CATx cables from the
Remote unit to the corresponding INTERCONNECT ports (1&2) on the Local unit (see
Figure 5).
7. Power up the PC.
The Local unit normally takes power through the USB connection. In
video only applications, or when the USB interface has limited power
(from a bus-powered hub, for example), an external 5V PSU may be
required. The power LED will indicate if an external PSU is required
(see page 23).
Please contact Technical Support to obtain a suitable power supply.
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ACU4222A only
ACU4201A and ACU4222A only
Connect to
Connect to computer’s
secondary video output.
Connect to audio
ports on computer.
Connect to
serial port on
computer.
secondary
Local monitor.
Connect to
primary Local
monitor.
Connect to
computer’s primary
video output.
Connect to USB port
on CPU (or external
hub).
Connect to
5V PSU
(optional).
All Local Units
Figure 4
Local Unit - rear view
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INSTALLATION
All Models
ACU4201A and ACU4222A only
INTERCONNECT 1 – carries
primary video and USB signals.
Connect to CATx cable from
INTERCONNECT 1 port on
Remote Unit.
INTERCONNECT 2 – carries secondary video
and audio/serial data (ACU4222A only).
Connect to CATx cable from
INTERCONNECT 2 port on Remote Unit.
Status
OFF
Yellow LED*
No data transfer between Local
and Remote units: not
connected, or Remote Unit not
powered.
Green LED
Local Unit not powered, or in an over-
voltage (>5.6V) or under-voltage
(<4.3V) condition.
ON
Powered Remote unit found.
Local Unit powered correctly.
* Yellow LED active on primary INTERCONNECT socket (Channel 1) only
Figure 5
Local Unit – front view
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4. Troubleshooting
4.1 Video
The image is not sharp, or is badly smeared.
Check that the cable length DIP switch is correct for the length of your Interconnect
cable (see page 18).
Check the Interconnect cable between the Remote and Local units. Is it of the
recommended type (see page 17)? Is it intact along its entire length and securely
connected at both ends? Is it wired correctly?
Ensure that all video connections throughout the system are attached securely.
Are you using an LCD panel? You must adjust its clock and/or phase either
manually or using auto-adjust.
Colors appear to be separated and there are colored borders on text and icons.
Check the Interconnect cable between the Remote and Local units. Is it of the
recommended type (see page 17)? Is it intact along its entire length and securely
connected at both ends? Is it wired correctly?
Are you using low skew cable? You can test for skew by viewing the online test
I only need video extension – not USB - but I can’t get a picture.
Have you powered the Local unit? The Local unit gets its power from the CPU
through the USB connection and it will not operate without it. Use an external 5V
PSU as described on page 21.
The monitor sometimes goes blank for a second or two.
Check that the interconnect cable is not routed near power lines or other sources of
electrical interference. Use shielded STP/FTP cable instead of UTP cable and
ensure the shield connection is maintained between the Extender units.
Check system grounding.
If this is a persistent problem, contact Technical Support.
Jitter is evident on video.
Adjust the clock and/or phase on your flat-panel. Contact Technical Support if this
fails to improve the situation.
Are you testing a system using a coiled drum of CATx cable? Try uncoiling the
cable. If this solves the video jitter, you should not have a problem after full
installation.
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TROUBLESHOOTING
I can’t select the video mode I need.
For non-standard resolutions, choose the monitor manually through the operating
system, and set to ignore DDC. Contact Technical Support if you have problems
selecting your required graphics mode.
Can the extender be used with RGB video?
Yes.
4.2 USB
Why does the Extender stop working when I attach a USB hub to the Remote unit?
If additional USB hubs are attached to the extender, the maximum extension
distance will be reduced (due to the delay imposed by each hub). For each
connected hub, you may lose up to 10m of extension distance. Any USB device to
which additional USB peripherals may be attached is a USB hub (e.g. an Apple®
USB keyboard).
Will the USB Micro Extender work with USB 2.0?
The extender will operate perfectly through USB 2.0 Host Controllers. However,
the speed will be restricted to that of a USB 1.1 hub (12Mb/s). Devices that are
USB 2.0 compliant will operate if they are backwards compatible with USB 1.1. If
you have a device that demands the high-speed mode of USB 2.0 then it will not be
compatible with the USB Micro Extender.
Is the USB Micro Extender compatible with all USB devices?
This product range extends the distance at which USB peripherals may be operated
by making full use of the bus timeout period allowed by the USB protocol. The
extender should be compatible with the majority (but not all) of CPU USB Host
Controllers and USB peripherals on the market.
Extended USB devices are unstable and ‘drop out’.
Check that the interconnect cable is not routed near power lines or other sources of
electrical interference. Use shielded STP/FTP cable instead of UTP cable and
ensure the shield connection is maintained between the Extender units. Check
system grounding.
The extension distance is too great for your CPU/USB device combination. Try
reducing the interconnection cable length if possible.
Some of my USB devices do not operate over the full range.
The maximum extension range is nominally 150ft (50m). In practice, the maximum
distance achievable may be between 120ft (40m) and 180ft (60m) depending on
your system and USB devices. Adding external USB hubs may decrease the
maximum extension distance by up to 30ft (10m) for each hub added. Adding bus-
powered hubs in front of the Local Unit is not recommended.
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4.3 Audio
The audio is very quiet.
The audio I/O is line-level and requires amplified speakers and connection to
devices providing line-level I/O.
The audio is loud but distorted.
Check that the audio input is not greater than line level (4V peak-to-peak). The
USB Micro Extender accepts line-level audio input only.
The microphone output is barely audible.
See Appendix C: Audio/Serial Ports, page 33.
4.4 Serial
My serial device does not function.
The extender supports serial devices at data rates not exceeding 19.2K Baud
(although 38.4K operation might be possible with certain equipment).
Check the type of flow control used by the device and CPU. The extender supports
RTS, CTS, DTR, and DSR. Some systems may require a wiring adapter to transfer
RI and DCD.
Attach the device directly to the serial port on the PC and test whether the problem
is a PC or extender problem.
Some serial devices cannot be hot-plugged. Try connecting the device to a powered
Remote unit prior to booting the system.
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TROUBLESHOOTING
4.5 General Questions
The green power LED is not lit when I connect my Local Unit to my USB hub.
Local Units normally take power from the USB connection to the computer. Local
Units may require an external 5V PSU:
- If the CPU/hub cannot provide sufficient power through the USB connection.
- For video only applications.
Contact Technical Support for details of a suitable PSU.
Is it possible to use a cable length longer than 150ft (50m)?
The maximum extension distance is nominally 150ft (50m). Some systems may
extend up to 180ft (60m) and others only 120ft (40m). Once the system range limit
is reached, USB operation will cease or become erratic. For maximum extension
distance, avoid connecting additional USB hubs to the system.
Which interconnection cable is best?
In electrically ‘quiet’ environments, UTP cable will give the best quality video over
long distances because it has less capacitance per unit length. However, it is more
prone to electrical noise and interference. In environments where this is likely to be
a problem, use STP/FTP cable, ensuring that the shield connection is maintained
between the Extender units.
Can I use CATx patch cables?
Yes, but to ensure maximum data integrity, use as few as possible. The maximum
patch cable length at each end of the link should be limited to 9ft (3m).
Can the extender system be used between buildings?
No. Ground loops could damage the extender system and attached equipment.
Can multiple Local/Remote Units be used by swapping the interconnection cable?
Local units provide a transparent USB link, so it is possible to swap or switch the
Local-Remote interconnection to create a matrix-switch system. Please call
Technical Support before deploying such a system.
Can the extender be connected into our network?
Absolutely not. Regardless of the cable similarities, the data signals and voltages
used by the extender are different to those used by Ethernet and other types of
networks. Connecting the extender to a LAN hub, switch, repeater, or other
network device, or exposing it to the signal levels present on network data lines
may damage the extender and other devices.
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Appendix A: Example Applications
This section illustrates three specific applications using USB Micro Extender units:
•
•
•
Simple system using ACU4001A to provide remote console with extended USB
keyboard, mouse and printer (Figure 6). Audio extended by USB using USB-to-Audio
converter at the Remote Unit (not included).
Dual-monitor consoles with serial and audio extension (Figure 7). Analog audio
extended without USB conversion using Interconnect 2 and monitor 2 at Remote console
is a serial touch screen. Uses ACU4222A.
ACU4222A configured for home entertainment system with extension of USB devices
(remote control, game pad, keyboard and mouse) and video (Figure 8). Use of USB
Micro Extender allows clutter and noise of CPU to be removed from viewing area.
For more specific information about these, or any other complex applications, please discuss
suitable extension architecture with Technical Support.
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APPENDIX A: EXAMPLE APPLICATIONS
CPU
Keyboard and mouse for
Local console connect to
spare USB ports or hub.
Local Console
ACU4001A Local Unit
Takes video and USB signals
from CPU. Also provides video
output for Local console.
ACU4001A Remote Unit
Video output and four USB
ports for extended devices:
keyboard, mouse, printer,
audio (requires USB-to-Audio
converter – not supplied).
Remote Console
Figure 6
Single monitor consoles with audio extension using USB-to-
Audio converter (not supplied)
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CPU
Local Console
Dual monitor console.
Keyboard and mouse for
Local console connect to
spare USB ports or hub.
ACU4222A Local Unit
Takes video and USB signals
from CPU. Also provides video
outputs for Local console.
ACU4222A Remote Unit
Video, audio/serial output and
four USB ports for extended
devices: keyboard, mouse,
graphics tablet, USB drive.
Remote Console
Dual monitor console.
Monitor 2 is serial touch screen.
Figure 7
Dual-monitor consoles with serial and audio extension
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APPENDIX A: EXAMPLE APPLICATIONS
CPU
Keyboard and mouse for
Local console connect to
spare USB ports or hub.
Local Console
ACU4222A Local Unit
Takes video and USB signals
from CPU. Also provides video
output for Local console.
ACU4222A Remote Unit
Video and audio output and
four USB ports for extended
devices: keyboard, mouse,
remote control and game pad.
Remote Console
Figure 8
Home entertainment system
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Appendix B: Rack Mount Options
All USB Micro Extender units can be mounted in a 19” rack in any combination using the
mounting kit: RMK19U-X3
RMK19U-X3 Mounting Kit
This mounting kit allows you to mount up to three units across 1U. It contains one rack plate
and M3 countersunk mounting screws.
To mount a unit:
1. Remove the feet from the extender unit.
2. Align the holes on the base plate with the vacant screw holes on the base of the extender
unit.
3. Fasten the base of the unit to the plate of the mounting kit using the supplied screws.
Figure 9
RMK19U-X3 Mounting Kit
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APPENDIX C: AUDIO/SERIAL PORTS
Appendix C: Audio/Serial Ports
Operation & Multi-Port Configuration
This appendix describes audio & serial interface operation for ACU4222A.
This extender allows bi-directional stereo audio and a full-duplex serial data to be sent across
the secondary CATx interconnection cable.
Serial Interface - Set Up and Operation
No setting up or user adjustments are required.
The Remote unit’s serial port is wired as DTE - the same as that on a PC. To connect a serial
printer or other DTE (rather than DCE device) to the Remote unit, you will need a Null-
Modem crossover cable between the Remote unit and the printer. Select Xon/Xoff software
flow control on the printer and PC.
A serial touch screen may be plugged directly into the Remote unit.
Serial Interface – Handling Multiple Serial Devices
The extender’s serial interface transmits/receives six signals (3 signals in each direction).
Normally, four of these signals are used for hardware handshaking (in addition to TX & RX).
However, because each handshaking line can support signals up to 19,200 Baud it is possible
to configure the serial interface to handle up to three simple 2-wire (Tx/Rx only) serial links.
To do this, you will need to construct a custom breakout cable. Please contact Technical
Support for further information.
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Audio Interface - Set Up and Operation
The audio interface is line-level and is designed to take the output from a sound card (or other
line-level) source and be connected to a set of powered speakers at the other end of the link.
Stereo audio may be transmitted either way across the link (simultaneously).
No setup is required unless a microphone is connected to the Remote unit.
Connect the extender as follows:
•
Take the line-level output from your sound card (green connector) and connect to ‘Line
In’ on the Local unit.
•
Connect ‘Line Out’ on the Remote unit to a set of powered speakers.
Audio Interface – Using a Microphone
A microphone may be plugged into the ‘Line In’ connector on the Remote unit.
There are two ways of setting up a microphone:
•
•
The Local unit’s ‘Line Out’ connection should normally be wired to the microphone
input (Pink) on your sound card. The sound card should then be set up to provide
additional amplification (+17dB). This is the preferred connection method.
Alternatively, the Remote unit itself can provide microphone amplification. To set this,
open up the Remote unit and locate the jumper labeled ‘MIC’ on the daughter board.
Connect this jumper across the pins. The Local unit’s ‘Line Out’ connection should then
be wired to ‘Line In’ (Blue) on your sound card.
If your microphone is already amplified, follow the second method but DO NOT install the
amplification jumper in the Remote unit.
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APPENDIX D: CALLING BLACK BOX
Appendix D: Calling Black Box
If you determine that your USB Micro Extender is malfunctioning, do not attempt to alter or
repair it. It contains no user-serviceable parts. Contact Black Box Technical Support at 724-
746-5500.
Before you do, 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 firmware-revision level printed on the bottom of the Extender (very important,
especially for keyboard and mouse problems); The USB Micro Extender’s firmware
revision level:
Version Number Format: xxSyy/zz
xx is the hardware revision number
yy is the firmware revision number
zz is the auxiliary revision number.
•
•
•
The nature and duration of the problem.
When the problem occurs.
The components involved in the problem—that is, what type of computers, what type of
keyboard, brand of mouse, make and model of monitor, type and make of CATx cable,
etc.
•
•
Any particular application that, when used, appears to create the problem or make it
worse.
The results of any testing you’ve already done.
To solve some problems, it might be necessary to upgrade the Extender’s firmware. If this
turns out to be the case for your difficulty, our Technical Support technicians will arrange for
you to receive the new firmware and will tell you how to install it.
Shipping and Packaging
If you need to transport or ship your USB Micro Extender:
•
•
Package it carefully. We recommend that you use the original container.
If you are shipping it for repair, please include the Remote Unit’s external power supply.
If you are returning it, please include everything you received with it. Before you ship
the Extender back to Black Box for repair or return, contact us to get a Return
Authorization (RA) number.
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Appendix E: Specifications
Video
Maximum Resolution
1600x1200@75Hz over 150ft (50m)
Operation at higher resolutions/refresh rates may be
possible at shorter distances
Video Compatibility
Video I/O
VGA to UXGA, RGB
0.7V P-P
2-stage
DC
Video Compensation
Video Coupling
Sync I/O
Separate/Composite TTL Level
Sync Polarity is preserved
VESA DDC
Emulated DDC for each video channel
(all standard modes).
Video Input Connectors
Video Output Connectors
HD15 (Male)
HD15 (Female)
USB
USB Compatibility
Transparent USB 2.0 compliant link
(low/full speed only)
Extender appears as a self-powered USB 1.1 hub to the
CPU. Remote unit contains integral USB 1.1 hub with 4
ports.
Extension Limits
150ft (50m) nominal
Maximum distance achievable may vary between 120ft
(40m) and 180ft (60m) depending on system. Adding
external USB hubs may decrease the maximum
extension distance by up to 30ft (10m) for each hub
added.
Adding bus-powered hubs in front of the Local Unit is
not recommended.
Local Unit Connector
USB B Socket
Remote Unit Connectors
4 x USB A Sockets
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APPENDIX E: SPECIFICATIONS
Serial Interface
Max Baud Rate Supported
Serial Data Format
19.2K Baud
Transparent
Signals Transferred
Local Unit Connector
Remote Unit Connector
TX, RX, RTS, CTS, DTR, DSR
DB9 Female (DCE)
DB9 Male (DTE)
Audio Interface
Description
Bi-directional stereo audio link
Transmission method
Signal levels
Digitized virtually CD quality audio (16-bit, 38.4kHz)
Line level (4 Volts Pk-Pk maximum)
47kΩ
Input Impedance
Local Unit Connectors
Remote Unit connectors
Microphone Support
2x3.5mm stereo jack socket (Line In & Line Out)
2x3.5mm stereo jack socket (Line/Mic In & Line Out)
Microphone may be connected to Remote Unit
Pullup resistor provides bias for condenser microphone
Option to set microphone amplification to +17dB
Power Requirements
Local Unit
5V at up to 275mA supplied by USB port
External PSU may also be connected to 2.1mm DC Jack
(Center Positive)
Over Voltage Protection: >5.6V
Under Voltage Protection: <4.3V
Remote Unit
5V Regulated, 20W, PSU included
(certified to all relevant safety standards)
Universal IEC Input
Connector: 2.1mm DC Jack (Center Positive)
Remote unit takes 250mA, remainder available for
connected USB devices.
Over Voltage Protection: >5.6V
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Size and Shipping Weight
ACU4001A
ACU4201A
ACU4222A
Local Unit: 4.7”x4.3”x1.1” (120x110x29mm)
Remote Unit: 5.4”x3.9”x1.1” (138x98x29mm)
Shipping Weight: 3.3lb (1.5kg)
Local Unit: 4.7”x4.3”x1.7” (120x110x44mm) (1U)
Remote Unit: 5.4”x3.9”x1.1” (138x98x29mm)
Shipping Weight: 3.7lb (1.7kg)
Local Unit: 5.9”x4.3”x1.7” (145x110x44mm) (1U)
Remote Unit: 5.4”x3.9”x1.7” (138x98x44mm) (1U)
Shipping Weight: 6.6lb (2.0kg)
Environmental
Operating Temperature
Storage Temperature
Relative Humidity
32 to 104°F (0 to 40 °C)
-22 to 149°F (-30 to 65 °C)
5-90% non-condensing
Chassis Construction
Fully shielded. Black painted steel
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