November 2009
5
CAT KVM Extender
ACU1022A
ACU1028A
ACU1049A
ACUVREM
ACUREMSW
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THE SERVSWITCH™ FAMILY
Welcome to the ServSwitch™ Family!
Thank you for purchasing a BLACK BOX® ServSwitch™ Brand CAT5 KVM Extender
model! We appreciate your business, and we think you’ll appreciate the many ways that your
enhanced keyboard/video/mouse 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 CAT5 KVM 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:
ACU1022A
ACU1049A
ACUVREM
ACU1028A
ACUREMSW
User Guide Revision: 2.0 (November 2009)
1
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THE SERVSWITCH™ FAMILY
Copyrights and Trademarks
©2002/2009. 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 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.
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DECLARATION OF CONFORMITY
EUROPEAN UNION COMPLIANCE STATEMENT
WARNING!
This is a class A product. In a domestic environment, this product may cause
radio interference, in which case the user might be required to take adequate
remedial measures.
This product complies with the following harmonized standards for Information Technology
Equipment: EN55022:2006 (Class A), EN55024:1998 + A1:2001 + A2:2003.
To maintain compliance the use of correctly installed shielded (STP/FTP) interconnection
cable is advised. Only use CPU cables and power supplies provided (or recommended) for
use with this product.
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. 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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NOM STATEMENT
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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CONTENTS
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.
The use of shielded CATx cable is recommended to maintain compliance.
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.
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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CONTENTS
Contents
1. Quick Setup
2. Overview 11
10
2.1
2.2
2.3
2.4
2.5
2.6
Introduction
Glossary
Features
Product Range
Compatibility
11
11
13
14
15
16
How to Use This Guide
3. Installation
17
17
18
19
21
24
26
3.1
3.2
3.3
3.4
3.5
3.6
Package Contents
Interconnection Cable Requirements
Remote Unit Installation
Connecting the Remote Unit
Local Unit Installation
Connection to Local Hubs
4. Remote Unit Configuration & Operation
28
28
29
4.1
4.2
4.3
Video Configuration Overview
Video Adjustments
Other Remote Configuration & Operation Options
31
5. Local Unit Operation
33
33
34
5.1
5.2
Overview
Operation of Dual Access Local Units
6. Troubleshooting & FAQ
36
36
37
37
38
39
6.1
6.2
6.3
6.4
6.5
Video
Audio
Serial
Keyboard & Mouse
General Questions
8
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CONTENTS
Appendix A: Example Applications
Appendix B: Rack Mount Options
Appendix C: Advanced Cabling Issues (Skew)
Appendix D: Audio/Serial Ports
Appendix E: Calling Black Box
40
44
45
47
49
50
Appendix F: Specifications
9
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QUICK SETUP
1. Quick Setup
This section briefly describes how to install your KVM extender system and optimize the
video signals. Unless you are an experienced user, we recommend that you follow the full
procedures described in the rest of this manual.
Set Cable Length Jumpers
Remove Remote Unit cover and set all three jumpers to position
.
for Interconnect cable length (see page 19)
Install system
1. Connect Remote Unit to KVM and audio/serial devices
Any Problems? See
(if present).
Installation and
Troubleshooting
sections.
2. Connect Local Unit or Extender Hub to CPU.
3. Connect Remote and Local Units with compatible
CAT5/5e Interconnect cable.
4. Power up system.
Provides useful
image for adjusting
video.
View Test Card
Adjust EQ and Peak controls
Optimize video quality on Remote console monitor
10
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OVERVIEW
2. Overview
2.1 Introduction
TheServSwitch™ Brand CAT5 KVM Extender products described in this manual enable
high-resolution video, PS/2 keyboard and mouse, stereo audio, and serial port signals to be
communicated up to 300m over Category 5/5e (CATx) cable.
A basic KVM extension system comprises a Local Unit (transmitter) and a Remote Unit
(receiver). The Local Unit connects directly to the computer (or a KVM switch system) using
the supplied cable(s). The user console (keyboard, mouse and monitor) attaches to the
Remote Unit. 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 combinations of the following:
•
•
•
•
Audio transmission: bi-directional stereo audio (16-bit digitized).
Serial transmission: transparent serial COM port (to 19.2Kbps).
Dual access: allowing a second user console at the Local Unit.
KVM switch allowing additional CPU to be connected to Remote Unit and used as
console.
2.2 Glossary
The following terms are used in this guide:
CATx
Any Category 5, 5e, 6 or higher cable.
PSU
Power Supply Unit.
KVM
Keyboard, Video and Mouse.
Console
Dual Access
A keyboard, monitor, and mouse, plus optional serial devices.
A system allowing connection of local and remote user consoles.
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OVERVIEW
Local Access
ACU1009A, ACU1008A
and ACU1005A kits
only.
Local Unit
KVM extension over CAT5/5e
cables up to 300m.
Remote Unit
Serial and Audio Transmission
Kits:
ACU1022A,ACU1028A
Remote Unit:
KVM Switch
Kit: ACU1049A
Remote Unit:
ACUREMSW
ACUVREM
Figure 1
ServSwitch™ Brand CAT5 KVM Extender system
12
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OVERVIEW
2.3 Features
All members of the ServSwitch™ Brand CAT5 KVM Extender product family described here
offer the following features:
•
Support for high video resolution over extended distances:
1600x1200@60Hz up to 65m
1280x1024@75Hz up to 120m
1024x768@75Hz up to 300m
•
Adjustable video equalization compensates for loss of image quality over extended cable
lengths.
•
•
Fully buffered signals to ensure consistent remote operation of your PC.
DDC emulation in Local Unit ensures compatibility for all standard graphics modes
(except for SUN models).
•
Intelligent PS/2 keyboard and mouse emulation ensures PCs do not lock-up and allows
peripherals to be hot-plugged.
•
•
Dual-Access models allow local or remote operation.
Audio/serial models only: 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).
•
Audio/serial models only: Bi-directional stereo audio (16-bit digitized) support on
certain models enables high-quality audio extension.
•
•
•
•
•
•
Switching models only: KVM switch for connecting additional PC to Remote Unit.
Local Units are normally powered directly by the PC (or switch).
Private Mode on dual-access models allows a local user to lock out the remote.
Rack mount options available.
Surge protection on each RJ45 port.
Remote Units are fully compatible with ServSwitch™ Brand CAT5 KVM Extender
Local Hubs.
•
CPU cables included (certain models).
13
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OVERVIEW
2.4 Product Range
This manual describes the following five products from the ServSwitch™ Brand CAT5 KVM
Extender range:
KVM, Audio and Serial Extension kits
Single Video Channel, PS/2 KB & Mouse, Serial, Stereo Audio
ACU1022A
Local Unit (Single Access) + Remote Unit
Single Video Channel, PS/2 KB & Mouse, Serial, Stereo Audio
ACU1028A
Local Unit (Dual Access) + Remote Unit
KVM Extension and Remote KVM Switching kits
Single Video Channel, PS/2 KB & Mouse
ACU1049A
Local Unit (Dual Access) + Remote Unit
Remote Unit incorporates KVM switch
Remote Units only
ACUVREM
Single Video Channel, PS/2 KB & Mouse, Serial, Stereo Audio
Single Video Channel, PS/2 KB & Mouse, KVM Switch
ACUREMSW
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OVERVIEW
2.5 Compatibility
Interface Compatibility
•
PS/2 Keyboard: Compatible with all standard keyboards. Certain keyboards with
enhanced features may also be supported with custom firmware.
•
PS/2 Mouse: Compatible with all standard 2-button, 3-button and wheel mice. To
connect to a PC that does not have a PS/2 mouse port, an active serial converter is
required - Model: AC244A.
•
•
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 SXGA. Separate sync, composite sync, or sync-on-green. Maximum
resolution and refresh rates depend on cable length and cable type (see Appendix F:
Specifications, page 50).
Extender Compatibility
You can use ServSwitch™ Brand products belonging to the same family in any combination.
However, it is not possible to mix Standard and Audio products within a system.
Family
CAT5
CATx
Micro
Hubs
Standard
ACU1001A
ACU1009A
ACU1049A
ACUREM
ACU2001A
ACU2009A
ACU2201A-R2
ACUR001A
ACUR002A
ACUR004A
ACU3001A
ACU3009A
ACUMREM
ACU1006MRA
ACU1006RA
ACU1006DRA
ACU1012RA
ACUREMSW
Audio
ACU2022A
ACU2028A
ACU2222A-R2
ACURA001A
ACURA002A
ACURA004A
ACU3022A
ACUWREM
ACU1006MRVA
ACU1006VRA
ACU1006DVRA
ACU1022A
ACU1028A
ACUVREM
Serial
SUN
ACU1002A
ACU1008A
ACUSREM
ACU1006SRA
ACU1006DSRA
ACU1004A
ACU1005A
PS/2
ACU1007A
No Video
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OVERVIEW
2.6 How to Use This Guide
This guide describes the installation and configuration of Standard and Serial members of the
ServSwitch™ Brand CAT5 KVM Extender range. Although the connection and operation of
these systems is relatively straightforward, you should consider the following before getting
started:
Connection & Compatibility
If you have purchased an Extender kit, this will contain all the cables required to connect the
Local Unit to your PC or KVM switch. The remote console (keyboard, monitor and mouse)
and any serial equipment connect directly to the Remote Unit.
If you have purchased a Remote Unit, ensure that it is compatible with your Local Unit or hub
(see Extender Compatibility, page 15).
For information about connection and installation, see Installation, page 17.
Interconnection Cable
You will need CATx cable, terminated with RJ45 plugs, to connect the Local and Remote
Units (see Interconnection Cable Requirements, page 18).
Adjusting Video
Video signals become distorted when transmitted over CATx cable. To get the best from your
extender system, it is essential that you adjust the Remote Unit to optimize the video image
quality:
•
For experienced users, there is a Quick Setup section at the start of this guide (see page
10).
•
•
For the full procedure, see Remote Unit Configuration & Operation, page 28.
Refer to Appendix C: Advanced Cabling Issues (Skew), page 45 for a more in depth
discussion of skew correction and advanced cabling issues.
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INSTALLATION
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 KVM 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 E: Calling Black Box, page 49.
•
•
•
Extender Remote Unit.
9V DC universal power supply for Remote Unit.
Extender Local Unit.
Only included in extender kits.
•
6ft (1.8m) KVM CPU combination cable with PS/2 (6-pin mini-DIN male-to-male)
keyboard and mouse connectors and VGA video (HD15 male to female) connector.
Models: ACU1022A and ACU1028A only.
Not included with individual Remote Unit ACUVREM.
•
3ft (1.0m) KVM CPU combination cable with PS/2 (6-pin mini-DIN male-to-male)
keyboard and mouse connectors, VGA video (HD15 male) connector, and 25-way
(DB25 Female) extender connector.
Model: ACU1049A only.
•
•
6ft (1.8m) Serial cable (DB9 male/female connectors, 1:1 connections).
Models: ACU1022A and ACU1028A only.
6ft (1.8m) Dual audio cable (3.5mm stereo plugs).
Models: ACU1022A and ACU1028A only.
•
•
IEC AC Power Cord.
Quick Start Guide.
17
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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. Please note that shielded cable is advised to maintain
regulatory EMC compliance.
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.
Pin*
Color
Signal
(EIA-568B)
1
2
White/Orange
Orange/White
Blue Video
Green Video
3
6
White/Green
Green/White
4
5
Blue/White
White/Blue
Red Video
Data
7
8
White/Brown
Brown/White
* Looking into the RJ45 socket on a Remote Unit, Pin 1 is on the right and Pin 8 on the left.
EIA-568A wiring can also be used. Contact Technical Support for details.
With some cables, video performance may be improved by using a crossover
patch cable at each end, an alternative RJ45 pin-out or an external skew
correction device (see Appendix C: Advanced Cabling Issues (Skew), page
45).
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INSTALLATION
3.3 Remote Unit Installation
Setting the Cable Length Jumpers
If your application uses a CATx cable less than 75m in length, you can
continue to the next section.
Remote Units incorporate video equalization circuitry, allowing you to compensate for the
loss in image quality that occurs when video signals are transmitted along lengthy CATx
cables. At the factory, Remote Units are configured to optimize the video signals for
Interconnect cables up to 100m in length.
If you intend to use cables of 100-300m in length:
1. Unfasten and remove the screws on each side of the Remote Unit.
2. Carefully remove the top plate.
3. Locate the three cable length jumpers on the Remote Unit’s main circuit board (see
Figure 2).
Power
Mouse K’board
Video
Cable
Length
Jumpers
RJ45 Brightness Focus
Figure 2
Location of cable length jumpers on Remote Unit’s main
circuit board
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INSTALLATION
4. Set the three cable length jumpers as follows:
Interconnect Cable
Length (m)
Jumper Position
(as viewed from front, with RJ45 connector towards you)
0 – 100
No jumpers (default)
100 – 200
200 – 300
If you are at the top end of a cable range, and you are using a high
screen resolution (1024x768 or higher), you may achieve better quality
video compensation by selecting the next cable length range.
Ensure that all three jumpers are set to the same position. If you are
carrying out a test placement prior to final installation, set the jumpers
to the positions appropriate to the test cable’s length. When your tests
are complete, set the jumpers to the positions appropriate for the CATx
cable length used in the full installation.
While you have the Remote Unit’s cover off, you may also want to change some of the other
jumper settings or DIP switch options:
20
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INSTALLATION
3.4 Connecting the Remote Unit
To install a Remote Unit:
1. Switch off all devices.
Connect your keyboard, monitor(s) and mouse to the Remote Unit as shown in Figure 3
(Switching) or Figure 4 (Audio/Serial).
These ports may also be attached to the CPU side of a KVM switch in
order to have a remote CPU. However, if you are attempting to use the
extender between cascaded KVM switches this may not work. Please
contact Technical Support to discuss your application.
2. If appropriate, connect audio equipment and serial devices. Connect the audio cables as
follows:
Remote Unit
Audio Out
Audio Device
Speakers
Audio In (MIC)
Microphone
3. Connect the CATx cable to the INTERCONNECT socket on the front of the Remote
Unit as shown in Figure 5.
4. Turn the Brightness and Focus controls fully anticlockwise.
5. Connect the 9V power supply to power the unit.
Only use the power supply originally supplied with this
equipment or a manufacturer approved replacement.
21
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INSTALLATION
Connect to additional PC
using DB25 male connector
of 3-in-1 CPU KVM cable.
Connect to
monitor.
Connect PS/2
keyboard and
mouse.
Connect approved
9V power supply.
Figure 3
Switching Remote Unit (ACUREMSW – also supplied with
ACU1049A kit) – rear view
Connect to speakers and
microphone.
Connect to serial device, for
example, a touch screen.
Connect to
monitor.
Connect PS/2
keyboard and
mouse.
Connect
approved 9V
power supply.
Figure 4
Audio Remote Units (ACUVREM – also supplied with
ACU1022A and ACU1028A kits)– rear view
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INSTALLATION
Interconnect – carries video and data
signals. Connect to Interconnect port on
Local Unit using CATx cable.
Brightness –
adjusts image
brightness
Focus– compensates
video for smearing or
over-sharpness
Figure 5
Remote Unit - front view
23
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INSTALLATION
3.5 Local Unit Installation
To install a Local Unit:
1. Switch off the PC and any peripheral devices before connection.
2. Using the supplied CPU KVM cable(s), connect the keyboard, monitor(s) and mouse
connectors on the computer (or KVM switch) to the corresponding connectors on the
Local Unit as shown in Figure 6.
Ensure that you attach the keyboard and mouse connectors to the correct ports. The
keyboard connector is purple; the mouse connector is green.
If your PC does not have a PS/2 mouse port, an active serial converter
will be required - Model No: AC244A.
3. If you have a dual access system, connect the keyboard, mouse and monitor for the local
console to the appropriate ports on the Local Unit. The ports may also be used to feed
into a KVM switch.
4. If you have an audio-enabled unit, connect the audio cables between the computer and
Local Unit as follows:
Computer
Local Unit
Audio In
Audio Out (green)
Audio In/Microphone (pink/blue)
Audio Out
5. If you have a serial-enabled unit, connect the supplied serial cable between the serial
port on the computer and the Local Unit.
6. Connect the CATx cable to the INTERCONNECT socket on the front of the Local Unit
(see Figure 7).
7. Power up the PC.
The Local Unit normally takes power through the PCs keyboard port. In
video only applications, this connection is not used and an external PSU
is required.
Please contact Technical Support to obtain a suitable power supply.
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INSTALLATION
ACU1022A and ACU1028A only
Connect to audio ports on
computer.
Connect to serial
port on computer.
Connect to
computer’s
video output.
Connect to computer’s
PS/2 keyboard and
mouse ports.
Connect to
Local monitor.
Connect to Local
PS/2 keyboard
and mouse.
All units
ACU1028A and ACU1049A only
Figure 6
Standard Local Unit - rear view
INTERCONNECT – carries video and data signals. Connect to CATx
cable connected to INTERCONNECT on Remote Unit.
Figure 7
Local Unit – front view
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INSTALLATION
3.6 Connection to Local Hubs
Remote Units are compatible with ServSwitch™ Brand CAT5 KVM Extender Local Hubs
belonging to the same family:
Remote Units
Compatible Local Rack Hubs
ACUREMSW
ACU1006RA, ACU1006DRA, ACU1012RA
ACU1022A, ACU1028A,
ACUVREM
ACU1006VRA, ACU1006DVRA
A simple example of the use of a Local Hub Unit in which an ACUVREM Remote Unit is
connected to each hub port, is shown in Figure 8. For more complex examples showing the
use of Local Hubs with ServSwitch™ Brand CAT5 KVM Extender Remote Units in efficient
ways, see Appendix A: Example Applications, page 40.
Individual Local Hub operation is not covered in this guide. Please refer to
the documentation supplied with your Local Hub unit.
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INSTALLATION
Figure 8
Simple system using ACU1006VRA Hub and ACUVREM
Remote Units to extend audio, serial and KVM for up to six
PCs
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REMOTE UNIT CONFIGURATION & OPERATION
4. Remote Unit Configuration &
Operation
Cat5/5e cables are specifically designed for networking applications and not for transmitting
analog video. Your CATx KVM extender includes, and requires, advanced technology to
enable its use at high screen resolutions. This section describes how to optimize the video
signal, configure the Extender system and operate the Remote Unit.
4.1 Video Configuration Overview
To get the best out of your extender system it is essential that you configure it correctly and
tune the video signal. Tuning is necessary because of distortions that occur in a video signal
when it is transmitted over lengthy CAT5/5e cables. Generally, you only need to carry out
this procedure after installation.
When you have installed your extender system, run an application that requires a high screen
resolution. Examine the video image on the remote console’s monitor. You may see some of
the following distortion effects:
Smearing
Loss of Sharpness
Black smearing at the
right edge of large
horizontal objects such
as title bars.
Blurring and lack
of detail, edges
appearing too
bright and sharp.
Color Separation or Skew
Displacement of
Brightness
Image appears
individual colors
(caused by timing
differences in RGB
signal reception).
brighter or darker
than the original.
The Remote Unit’s Focus control allows you to correct smearing and loss of sharpness
effects. The Brightness control adjusts video image brightness.
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REMOTE UNIT CONFIGURATION & OPERATION
Skew only tends to be a problem at high screen resolutions with long interconnect cables. We
recommend the use of low skew CAT5/5e cable for all applications. Please contact Technical
Support for more information.
With some cables, video performance may be improved by using a
crossover patch cable at each end, an alternative RJ45 pin-out or an
external skew correction device (see Appendix C: Advanced Cabling
Issues (Skew), page 45).
The alternative ServSwitch™ Brand CATx KVM Extender range has been
specifically designed for the extension of high screen resolutions
(1600x1200) over long CATx cables (300m). ServSwitch™ Brand CATx
KVM Extenders have fully integrated skew compensation and independent
control of low frequency (LF) and high frequency (HF) cable equalization.
4.2 Video Adjustments
Remote Units feature a number of correction tools to simplify video optimization. This
procedure is straightforward and only needs to be carried out once.
Please note that cable equalization cannot be exact – the remote image will
never be as sharp as the original. The KVM Extender’s equalization system
produces good results for short to medium length cables (<150m).
Adjusting Video
Use the following step-by-step procedure to optimize the video image on the remote console:
1. If possible, view the online test card at:
This is an image (see Figure 9) created and used by the manufacturer for video optimization
purposes. It is particularly useful for observing skew. If you are unable to view the test card,
display some text in a large font on a white background.
You should also open up other application windows to check the clarity of
text in tool bars and icons on the desktop.
2. Turn the Brightness and Focus controls on the Remote Unit fully anti-clockwise. The
image quality may be poor at this point.
3. Use the Focus control to adjust video equalization. If the video signal is under-
compensated, you will notice black smearing on the right-hand edge of large horizontal
objects such as title bars. If it is overcompensated, horizontal edges may become bright
and too sharp. Rotate the Focus control clockwise until these effects disappear. The
compensation is now adjusted correctly for the length of cable.
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REMOTE UNIT CONFIGURATION & OPERATION
If you are at the top end of a cable range, for example, 80m (250ft), and
you are using a high screen resolution (1024x768 or higher), you may
achieve better quality video compensation by selecting the next cable
length range using the cable length jumpers (see page 19). Use the
Brightness control to adjust the brightness of the overall picture. After
adjusting this control, you may need to re-adjust the Focus control.
4. If you are using a flat panel monitor at the remote console, carry out auto-
adjustment as described in the monitor’s documentation. Sometimes manual
adjustment of clock and/or phase is also required for optimum results and
minimization of jitter.
Figure 9
On-line test card available at
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REMOTE UNIT CONFIGURATION & OPERATION
4.3 Other Remote Configuration & Operation
Options
Keyboard ‘hot’ keys are used to carry out various functions on both Remote and Local Units.
To enter these commands:
1. Press and release the initial ‘hot’ key.
By default, the initial ‘hot’ key is <Right Control>
2. Press and release the command key.
Changing the Initial Hot Key
The initial ‘hot’ key for both Remote and Local Units may be changed from <Right
Control> to <Left Control> using a DIP switch on the Remote Unit’s main circuit board
(see Figure 10).
Power
Mouse K’board
Video
SW1 DIP
switches
RJ45 Brightness Focus
DIP Switch settings
Not used
OFF
ON
Initial Hot Key
Right Control
Left
Control
Not used
Not used
Figure 10
Remote Unit DIP switches on Audio/Serial/Switching
CAT5/5e KVM Extenders
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REMOTE UNIT CONFIGURATION & OPERATION
Hot Key Commands
After pressing the initial ‘hot’ key on the remote keyboard, you can issue a number of
commands by pressing additional keys. These commands allow you to start a private mode
session on the remote console or to reset the keyboard and mouse.
Command
Key Sequence
<Scroll Lock>
Private Mode
(ACU1028A, ACU1049A, ACUVREM, ACUREMSW
only)
Audio/Serial Local Units that feature dual access allow the remote user to lock out the local
console by triggering a ‘Private Mode’ function. This prevents the local console from being
used even if a two second inactivity timeout period expires.
During a Private Mode session, the extender system:
•
•
•
•
Flashes the Scroll Lock LED on the remote keyboard.
Illuminates all three LEDs on the local keyboard.
Displays a blank image on the local console’s monitor.
Locks the local console’s keyboard and mouse.
Reset Keyboard and Mouse
<Num-Pad Up Arrow>
Reset the remote console’s keyboard and mouse. You may need to do this if you have hot-
plugged a keyboard or mouse and it has not initialized correctly.
Mouse Recovery
<Num-Pad Left Arrow>
Use this command if you experience erratic movement of the mouse pointer or you have lost
mouse movement after hot plugging the Local Unit into the CPU. In the case of erratic
mouse movement, you may need to enter the command a number of times to re-synchronize
the mouse signal. Alternatively, stop moving the mouse for a few seconds and the operating
system’s mouse drivers may automatically re-synchronize the signal. If the Local Unit has
been hot-plugged, this command will issue a request to the OS to initialize the mouse. Use
this command with care.
Switch to other PC
<Num-Pad + >
(ACU1049A and ACUREMSW only)
Toggles KVM switch in Remote Unit so that the remote console controls either the second
PC (connected directly to the Remote Unit) or the extended PC.
Note: On power-up, the Remote Unit will switch to the first active CPU.
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LOCAL UNIT OPERATION
5. Local Unit Operation
5.1 Overview
You need to read this section if you have purchased an extender system kit containing both a
Local and Remote Unit.
For more information about serial/audio port operation, see Appendix D: Audio/Serial
Ports, page 47.
Keyboard and Mouse Emulation
Local Units have keyboard and mouse emulation. The attached PC operates normally without
requiring a keyboard or mouse to be attached to either the Remote or Local Units (in the case
of a dual access system). You can therefore replace any keyboard or mouse attached to the
extender system without disrupting the operation of the computer.
Power Requirements
Local Units normally take power from the keyboard connection to the computer. For video
only applications, you must apply external power through this port. Use an external 5V PSU
with PS/2 connector (Model: PSU1001E-LOCAL).
Contact Technical Support for further information.
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LOCAL UNIT OPERATION
5.2 Operation of Dual Access Local Units
Models ACU1028A and ACU1049A offer dual access with a second console at the Local
Unit. This operates on a first-come, first-served basis. When one console is in use, the system
blocks out the other console until there is no keyboard or mouse use at the active console for
a set time: the Inactivity Timeout Period. This is fixed at two seconds. Thereafter, any
keyboard or mouse action at the other console switches console activity.
When the PC is booted, the local console is active. When you are activating
a console, the first key or mouse press is not passed to the PC.
ACU1028A only: When the local console is in Private Mode, audio
transmission to the Remote Unit is stopped but the serial link is maintained
Hot Key Commands
With dual access systems, keyboard hot keys are used to carry out various functions at the
local console.
To enter these commands:
1. Press and release the initial ‘hot’ key.
By default, the initial ‘hot’ key is <Right Control>.
2. Press and release the command key.
With these systems, the Scroll Lock operates as normal unless you have pressed the initial hot
key.
Changing the Initial Hot Key
The Local Unit’s initial ‘hot’ key may be changed from <Right Control> to <Left Control>
using a DIP switch on the Remote Unit’s main circuit board (see Figure 10).
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LOCAL UNIT OPERATION
Local Console Commands
After pressing the initial ‘hot’ key on the local keyboard, you can issue a number of
commands by pressing additional keys. These commands allow you to start a private mode
session on the local console or to reset the keyboard and mouse.
These commands only apply to Local Units having firmware versions ‘S50’
and above.
Command
Key Sequence
<Scroll Lock>
Private Mode
(ACU1028A and ACU1049A only)
Audio/Serial Local Units that feature dual access allow the local user to lock out the remote
console by triggering a ‘Private Mode’ function. This prevents the remote console from
being used even if the two second inactivity timeout period expires.
During a Private Mode session, the extender system:
•
•
•
•
•
•
Flashes the Scroll Lock LED on the local keyboard.
Illuminates all three LEDs on the remote keyboard.
Displays a blank image on the remote console’s monitor.
Locks the remote console’s keyboard and mouse.
Stops audio transmission.
Switches to remote CPU (ACU1049A only).
Reset Keyboard and Mouse
<Num-Pad Up Arrow>
Reset the local console’s keyboard and mouse. You may need to do this if you have hot-
plugged a keyboard or mouse and it has not initialized correctly.
Mouse Recovery
<Num-Pad Left Arrow>
Use this command if you experience erratic movement of the mouse pointer or you have lost
mouse movement after hot plugging the Local Unit into the CPU. In the case of erratic
mouse movement, you may need to enter the command a number of times to re-synchronize
the mouse signal. Alternatively, stop moving the mouse for a few seconds and the operating
system’s mouse drivers may automatically re-synchronize the signal. If the Local Unit has
been hot-plugged, this command will issue a request to the OS to initialize the mouse. Use
this command with care.
The ACU1049A Local Unit allows the local console to operate the local
CPU and the remote console to operate the remote CPU at the same time.
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TROUBLESHOOTING & FAQ
6. Troubleshooting & FAQ
6.1 Video
The image is not sharp, or is badly smeared.
Have you adjusted the video equalization? Follow the instructions on page 29.
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 need to adjust its clock and/or phase.
Colors appear to be separated and there are colored borders on text and icons.
Check that the compensation jumper setting is correct for the length of your
Interconnect cable (see page 19).
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?
See Appendix C: Advanced Cabling Issues (Skew), page 45.
I only need video extension – not keyboard or mouse - but I can’t get a picture
Have you powered the Local Unit? The Local Unit gets its power from the CPU
through the keyboard connection and it will not operate without it. Use an external
5V PSU as described on page 33.
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 ensuring
that the shield connection is maintained between the extender units.
Check system grounding. The Remote Unit has an isolated power supply and relies
on obtaining a ground reference through the connected monitor. Some monitors on
the market have an external PSU which itself may be isolated from power ground.
If this is the case, and you are experiencing monitor blanking, you may need to
consider grounding the Remote Unit chassis (to power ground) or replacing the
monitor’s power supply with a non-isolated model.
If this is a persistent problem, contact Technical Support.
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TROUBLESHOOTING & FAQ
The PC won’t boot into the correct graphics mode
The extender includes DDC emulation for all standard resolutions and there should
not normally be any issues.
For non-standard resolutions, you will need to explicitly set the resolution in your
operating system configuration ignoring the DDC data read from the Local Unit.
Contact Technical Support if you have problems selecting your required graphics
mode.
Can the extender be used with RGB video?
Yes.
6.2 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
KVM extender accepts line-level audio input only.
The microphone output is barely audible.
See Appendix D: Audio/Serial Ports, page 47.
6.3 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 & FAQ
6.4 Keyboard & Mouse
When I am typing, I get wrong or missing characters on the screen.
Your keyboard may be in the wrong mode. Use the appropriate commands to reset
the keyboard and mouse as described in the sections covering local and remote
operation.
The PC comes up with ‘keyboard error’.
Press <F1> or <ESC>. If the keyboard now operates correctly, you need to adjust
the BIOS setup to disable keyboard testing during booting.
The system does not detect a PS/2 mouse.
If connecting the Local Unit to a live system, connect the mouse cable to the CPU
before keyboard connection to ensure the mouse is enabled correctly. Try issuing
the Mouse Recovery command.
Check that the mouse cable is connected properly and securely. Reboot the system.
The mouse pointer moves erratically.
Reset the keyboard and mouse.
Issue the Mouse Recovery command up to three times.
Ensure that you have the latest driver for your mouse.
If you are using the extender with a KVM switch, command the switch to reset the
mouse.
Quit and restart the application. Reboot the PC.
When I ‘hot-plug’ the Local Unit, the mouse no longer moves.
When connecting the Local Unit to a live system, connect the mouse cable to the
CPU before keyboard connection to ensure the mouse is enabled.
Try issuing the Mouse Recovery command.
Some of the mouse buttons don’t work.
The Extenders support standard 2/3-button mice (with or without a wheel).
Additional buttons will not operate.
I have an enhanced keyboard with extra keys and indicators. Everything works apart from
these additional features.
The extender emulates a generic PS/2 keyboard. To support other keyboards (or
cascaded KVM switches), special firmware offering a transparent mode may be
required. Please contact Technical Support to discuss your application.
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TROUBLESHOOTING & FAQ
6.5 General Questions
Is it possible to use a cable longer than 300m?
It might be possible to use a cable of up to 500m at lower resolutions. However, we
do not recommend this and cannot guarantee that it will work.
Can the extender be daisy chained?
In certain circumstances, it is possible to cascade extenders, though we do not
recommend doing so. Careful consideration needs to be given to extender setup,
and the electrical environment. If you plan to cascade extenders, please contact
Technical Support.
Which interconnection cable is best?
The extender will operate with either shielded (STP/FTP) or unshielded (UTP)
CATx cable. However, correctly installed shielded cable is preferred, especially in
electrically noisy environments, because it resists interference more strongly, limits
ground potential differences, and reduces emissions. To benefit from shielded cable
the shield connection must be maintained from end to end through any intervening
patch cables, panels and RJ45 connectors.
Please note that shielded cable is advised in order to maintain regulatory EMC
compliance.
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 full keyboard and mouse emulation, so it is possible to swap or
switch the local-remote interconnection to create a KVM matrix-switch system.
Sometimes you may need to reset the keyboard and mouse (by entering the
appropriate command) after a swap or switch. 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 from 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
Appendix A: Example Applications
This section illustrates three specific applications using ServSwitch™ Brand CAT5 KVM
Extender units:
•
•
•
Six remote serial touch screens with local access through a KVM switch
(Figure 11).
Information distribution system sharing a single PC at up to six remote locations
(Figure 12).
ACU1049A extender kit allows remote user to switch between remote and local CPUs
(Figure 13).
For more information about these, or any other complex applications, please discuss suitable
extension architecture with Technical Support.
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APPENDIX A: EXAMPLE APPLICATIONS
KVM Switch
Local access ports connect to
single KVM console through switch.
ACU1006DVRA Extender Hub
Takes KVM and serial signals
from each CPU (only two shown).
ACUVREM
Remote Units connect
to touch screens.
Figure 11
Touch screen network with local access to CPUs through
KVM switch.
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APPENDIX A: EXAMPLE APPLICATIONS
5V PSU
ACU1006DVRA Extender Hub
CPU connects to Port 1. Local access ports are
daisy-chained to allow operation from any console
and/or video to be distributed to multiple locations.
ACUVREM
Remote Units connect
to KVM consoles.
Figure 12
Information distribution system sharing a single PC
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APPENDIX A: EXAMPLE APPLICATIONS
Dual access to extended
CPU available at Local Unit
ACU1049A Kit
(uses ACUREMSW Remote Unit)
Allows user at Remote console to
switch between extended CPU and
CPU connected to Remote Unit.
Figure 13
ACU1049A kit with switching Remote Unit
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APPENDIX B: RACK MOUNT OPTIONS
Appendix B: Rack Mount Options
Extender units can be mounted in a 19” rack using the mounting kit::RMK19U-R2.
Each kit consists of two angled brackets.
To mount a unit:
1. Remove the two screws from one side of the unit.
2. Match up the lower pair of holes on a bracket with the vacant screw holes on the side of
the unit.
3. Using the original screws, fasten the mounting brackets to the side of the unit.
4. Repeat this procedure on the other side of the unit.
5. Fasten the assembly to the rack unit.
Figure 14
RMK19U-R2 Mounting Kit
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APPENDIX C: ADVANCED CABLING ISSUES (SKEW)
Appendix C: Advanced Cabling Issues
(Skew)
This section discusses skew and how to minimize its effects.
What is Skew?
Each color in the RGB (Red, Green, Blue) video signal is sent down a separate pair of wires
in the Interconnect cable. On many cables, the twist rates differ and this leads to each color
arriving at a slightly different time and therefore spreading out on the screen.
Certain CATx cables can show noticeable skew when operating at high video resolutions over
longer lengths of cable (see page 28). Skew problems are best avoided by using ‘low skew’
cable. This is CATx cable with closely matched twist rates. Please contact Technical Support
for recommendations.
Correcting Skew
If a change in cable is not possible, or if you still observe color separation when using low
skew cable, you could try one of the techniques described in this section:
•
•
•
Optimizing pairs (to match pairs for RGB video)
Patch cables (to minimize visible distortion)
Extender with Skew Compensation (to delay fastest signals)
You can check the relative delays in the color signals using the test card, as described on page
29. Skew causes the color bars in the test pattern to be displayed at slightly different
horizontal positions on the screen. To fully correct skew, the two color bars furthest to the left
require delaying until they align with the color bar on the right (slowest).
Optimizing Pairs
This technique is a general solution for optimizing video transmission along a CATx cable.
The aim is to arrange the color and data signals as shown in the following table:
Pins
Pair
Signal
7 & 8
1 & 2
4 & 5
3 & 6
Shortest Pair (Fastest)
3rd Longest Pair
2nd Longest Pair
Longest Pair (Slowest)
Data
Blue Video
Red Video
Green Video
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APPENDIX C: ADVANCED CABLING ISSUES (SKEW)
You can measure pair lengths with a LAN cabling tester (TDR) or view pairs by stripping
back a small piece of cable and viewing how tightly the pairs are twisted. The most tightly
twisted pair is the slowest (longest) and the loosest pair the fastest (shortest). You can also
observe relative delays using the test card.
Some cables have a ‘3+1’ construction where three pairs closely match. The fourth pair
should be used for data and the other pairs sorted as in the above table. Other cables have a
‘2+2’ construction where there are two sets of dissimilar pairs. Put red and green on one set
(tightest) and blue & data on the other.
A suitable pair-swapping scheme is easily made using custom wired patch cables at each end
of the Interconnect cable.
Extender with Skew compensation
In more extreme cases, you should consider using an alternative extender with an in-built
Skew Compensation feature such as the ACU2000 series. This allows you to set independent
delay values of up to 42nS on each color signal. Contact Technical Support for details
Patch Cable
To obtain optimal video performance with your existing setup, it is desirable to have the
green signal as the reference (slowest). This is because the human eye is extremely sensitive
to additional green distortion (introduced by delays).
If your system requires a large delay on the green signal, try using a crossover patch cable at
each end of the link (instead of straight patch cables to connect to wall outlets). In many
cases, the crossover should transfer the delay requirement to the blue signal rather than green.
The human eye is much less sensitive to blue distortion and so video quality appears to be
improved. The main cable should be wired according to EIA-568B as shown on page 17.
Using a crossover cable (at each end) will put the green video on the orange colored pair and
the blue video on the green colored pair.
EIA-568A wiring can also be used to the same effect. Contact Technical
Support for details.
The alternative ServSwitch™ Brand CATx KVM Extender range
(ACU2000 series) has been specifically designed for the extension of high
screen resolutions (1600x1200) over long CATx cables (300m).
ServSwitch™ Brand CATx KVM Extenders have fully integrated skew
compensation and independent control of low frequency (LF) and high
frequency (HF) cable equalization.
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APPENDIX D: AUDIO/SERIAL PORTS
Appendix D: Audio/Serial Ports
Operation & Multi-Port Configuration
This appendix describes audio & serial interface operation for:
•
•
•
ACU1022A
ACU1028A
ACUVREM
These extender products contain daughter boards that allow bi-directional stereo audio and a
full-duplex serial data link to be sent across the CAT5/5e interconnection cable in addition to
PS/2 keyboard, mouse and video.
When a dual access Local Unit is in a Private Mode session, audio
transmissions to the Remote Unit are stopped but the serial link remains
active.
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.
Please note that on dual access Local Units, the serial link is always active.
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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APPENDIX D: AUDIO/SERIAL PORTS
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.
There is no output on the Local Unit to connect a set of speakers. If you require a set of
speakers at the local console, use a 3.5mm stereo socket doubler on the audio input to the
extender.
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 E: CALLING BLACK BOX
Appendix E: Calling Black Box
If you determine that your ServSwitch™ Brand CAT5 KVM 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 KVM 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 CAT5 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 ServSwitch™ Brand CAT5 KVM 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 F: SPECIFICATIONS
Appendix F: Specifications
Video
1600x1280@60Hz up to 65m
1280x1024@75Hz up to 120m
1024x768@75Hz up to 300m
Maximum Resolution
Operation at higher resolutions/refresh rates may be
possible at shorter distances
VGA to UXGA, RGB
0.7V P-P
Video Compatibility
Video I/O
3-stage continuously variable.
DC
Video Compensation
Video Coupling
Sync I/O
H/V or composite
TTL signal levels
Sync Polarity is preserved
HD15 (Male)
DB25 Female (ACUREMSW - CPU)
Video Input Connectors
Video Output Connectors
HD15 (Female)
Keyboard and Mouse
PC/AT, PS/2
KB Compatibility
Standard PS/2 two/three button
Standard wheel mice
Mouse Compatibility
Logitech 3-button PS/2
6-Pin MiniDIN Socket
DB25 Female (ACUREMSW - CPU)
KB/Mouse Connectors
(CPU)
6-Pin MiniDIN Socket
KB/Mouse Connectors
(Device)
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APPENDIX F: SPECIFICATIONS
Serial Interface
19.2K Baud
Transparent
Max Baud Rate Supported
Serial Data Format
TX, RX, RTS, CTS, DTR, DSR
DB9 Female (DCE)
Signals Transferred
Local Unit Connector
Remote Unit Connector
DB9 Male (DTE)
Audio Interface
Bi-directional stereo audio link
Description
Digitized virtually CD quality audio (16-bit, 38.4kHz)
Line level (4 Volts Pk-Pk maximum)
47kΩ
Transmission method
Signal levels
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
5V at up to 200mA supplied by PCs PS/2 keyboard port.
Local Unit
External PSU may also be connected through keyboard
port
9V, 2A (18W) Regulated
Remote Power Supply
(certified to all relevant safety standards)
Universal IEC Input
Isolated Output
2.5mm DC Jack (Center Positive)
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APPENDIX F: SPECIFICATIONS
Size and Shipping Weight
Remote Unit: 202x100x36mm
ACUREMSW
Shipping Weight: 1.08 Kg
Remote Unit: 202x100x44mm (1U)
Shipping Weight: 1.14 Kg
ACUVREM
ACU1022A
Local Unit: 202x100x44mm (1U)
Remote Unit: 202x100x44mm (1U)
Shipping Weight: 2.53 Kg
Local Unit: 202x100x44mm (1U)
Remote Unit: 202x100x44mm (1U)
Shipping Weight: 2.58 Kg
ACU1028A
ACU1049A
Local Unit: 202x100x36mm
Remote Unit: 202x100x36mm
Shipping Weight: 2.48 Kg
Environmental
0 to 40 °C
Operating Temperature
Storage Temperature
Relative Humidity
-30 to 65 °C
5-90% non-condensing
Fully shielded. Black painted steel
Chassis Construction
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NOTES
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NOTES
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Customer Support Information:
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)
For 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 Dr., Lawrence, PA 15055-1018
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© Copyright 2009. Black Box Corporation. All rights reserved.
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