Ihse DDXI, K439-0W, K439-1W, K437-0W, K437-1W User Manual

THE DDXI - DVI/VGA KVM EXTENDER FAMILY

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Welcome to the DDXI DVI/VGA KVM Extender

Family!

Thank you for purchasing a DDXI DVI/VGA 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 DDXI DVI/VGA KVM Extender family is all about breaking away
from the traditional, expensive model of computer management. You know the one­size-fits-all-even-if-it-doesn’t model that says, “One computer gets one user station,
no more, no less.” 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 DDXI DVI/VGA KVM Extender products, there’s no reason why not. We
carry a broad line of robust solutions for all these applications. The DDXI DVI/VGA
KVM Extender family—the one-stop answer for all your KVM-extending needs!

This manual will tell you all about your new DDXi DVI/VGA 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:

K439-0W: DDXi DVI/VGA KVM Extender over Cat5 – DVI/VGA only

K439-1W: DDXi DVI/VGA KVM Extender over Cat5 – PS/2

K437-0W: DDXi DVI/VGA KVM Extender over Multimode Fibre – DVI/VGA only

K437-1W: DDXi DVI/VGA KVM Extender over Multimode Fibre – PS/2

K438-0W: DDXi DVI/VGA KVM Extender over Singlemode Fibre – DVI/VGA only

K438-1W: DDXi DVI/VGA KVM Extender over Singlemode Fibre – PS/2

K442-2U: DDXi DVI/VGA KVM Extender over Multimode Fibre – USB

K443-2U: DDXi DVI/VGA KVM Extender over Singlemode Fibre – USB

DDXI DVI/VGA KVM EXTENDER FAMILY

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Copyrights and Trademarks

©2006. 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.

EMPTY PAGE

3

.

DDXI DVI/VGA KVM EXTENDER FAMILY

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EUROPEAN UNION DECLARATION OF CONFORMITY

This is to certify that, when installed and used according to the instructions in
this manual, together with the specified cables and the maximum cable length
<3m, the Units:

K439-0W, K439-1W
K437-0W, K437-1W
K438-0W, K438-1W

K442-2U, K443-2U

are shielded against the generation of radio interferences in accordance with
the application of Council Directive 89/336/EEC as well as these standards:

EN 55022: 1999 Class A
EN 55024: 1999

IEC 61000-4-2: 2001
IEC 61000-4-3: 2001
IEC 61000-4-4: 2001

EN 61000-3-2 2001
EN 61000-3-3 2002

The device was tested in a typical configuration with PC.

Oberteuringen, Wednesday, October 21th, 2006

The management

This equipment has been found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.

CONTENTS

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Safety Precautions and Installation Guidelines

To ensure reliable and safe long-term operation, please note the following installation
guidelines:

• Do not use CATx-devices to link between buildings – please use fiber devices.

• 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 a 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, Local unit and any power supplies can get warm. Do not
locate them in an enclosed space without any airflow.

• Do not place a power supply directly on top of a unit.

• Do not obstruct a unit’s ventilation holes.

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) or the
Fiber link interface (SC-Duplex) to any other products,
especially telecommunications or network equipment.

• To comply with CE regulations, it is NOT allowed, to use

CATx devices with unshielded CATx cables

DDXI DVI/VGA KVM EXTENDER FAMILY

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Contents

1. Quick Setup 8

1.1

Video Input/Output 9

1.2

Command Summary 10

2. Overview 11

2.1

Introduction 11

2.2

Glossary 11

2.3

Features 13

2.4

Product Range 14

2.5

Compatibility 15

2.6

How to Use This Guide 16

3. Installation 17

3.1

Package Contents 17

3.2

Interconnection Cable Requirements 18

3.3

System Setup 19

3.4

Diagnostic LEDs 23

3.5

Access Switching 24

3.6

Private Mode 24

4. Device Control 25

4.1

Opening the OSD 26

4.2

Using the OSD 28

5. Monitor Setup 36

6. Extender Setup 37

6.1

Overview 37

6.2

Setup Instructions for VGA Input 38

7. Troubleshooting 40

7.1

Video 40

7.2

Keyboard & Mouse 41

Appendix A: Example Applications 42

CONTENTS

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Appendix B: Rack Mount Options 46

Appendix C: System Upgrade & Dual Access 48

Appendix D: Video Modes and Frame Rates 49

Appendix E: USB – High Power/Low Power 51

Appendix F: Audio/Serial Upgrade 52

Appendix G: Calling Technical Support 54

Appendix H: Specifications 55

Appendix I: Connectors and Cables 58

DDXI DVI/VGA KVM EXTENDER FAMILY

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1. Quick Setup

This section briefly describes how to install your DDXI DVI/VGA KVM-Extender 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. Refer to the
command summary on page 10 when following this procedure.

Install system

1. Connect Remote unit to KVM.

2. Connect Local unit to CPU or switch.

3. Connect Local and Remote units with matching interconnection cable
(CATx, Multimode or Singlemode fiber).

4. Power up the system.

Carry out the Monitor Setup
procedure (please refer to its
manual and see page 36 in
this manual).

Carry out VGA Input Setup procedure
(please follow the instructions on page 38).

Done

Yes

No

Do you have a

DVI monitor?

Do you have a

DVI source?

Do you

have a flat screen

(TFT)?

No

No

Yes

Yes

QUICK SETUP

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1.1 Video Input/Output

If possible, always use DVI output from your computer’s video card and DVI input to
a monitor. This provides the optimum video signal. If you use a VGA output from your
graphic source, the DVI-KVM Local unit must digitize the signal prior to transmission.
Similarly, if your remote TFT screen uses a VGA input, it must digitize the signal from
the Remote unit. In both cases, the built-in video processors must determine the
resolution and pixel phase for an optimized digitization. Your DVI Extender allows
you to optimize the video signal manually or automatically using its on-screen utility
(see Chapter 4). If you are using a VGA input to a TFT monitor, please follow the
manufacturer’s instructions.

You may have several possible options for video source output/monitor input. If this
is the case, for the optimum video quality, please select the highest ranked available
combination from the following table:

Video Quality Local Unit input Remote Unit output

1 DVI DVI

2 DVI VGA

3 VGA DVI

4 VGA VGA

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1.2 Command Summary

The following table summarizes the ‘hot’ key command sequences used in system
configuration and video tuning on a Remote unit console.

Command

Keyboard

at Remote unit

Terminal or

Windows Utility program*

Enter OSD

<Left Control>

+ <Left Shift> + <I>

<O> + <S> + <D>

+ <Enter>

Exit OSD <ESC> <X>

Select next

position

<Right Arrow> <R>

Select previous

position

<Left Arrow> <L>

Select Submenu <Enter> <S>

Select parameter

modification

<Enter> <S>

Increase

parameter

<Right Arrow> <R>

Decrease

parameter

<Left Arrow> <L>

Accept and store

modified

parameter

<Enter> <S>

Back to the Menu

selection

* Commands are not case-sensitive.

OVERVIEW

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2. Overview

2.1 Introduction

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 interconnecting cable (see Figure 1). Local
units offer dual access, allowing the connection of a second user console close to the
computer. With the optional upgrade kit, you can also use DDXI DVI/VGA KVM
Extender units to communicate stereo audio and serial port signals.

DDXI DVI/VGA KVM Extender Series enables high-resolution video, PS/2 keyboard
and mouse signals to be communicated up to:

• 300ft (100m) over Category 5, 5e, 6 or higher (CATx) cable.

• 1200ft (400m) over Multimode fiber cable (50/125µ).

• 600ft (200m) over Multimode fiber cable (62.5/125µ).

• 6¼ miles (10km) over Singlemode fiber cable (9/125µ).

In a digital application (DVI input and output), there is no loss of picture quality
irrespective of extension distance and no adjustments are required. The DDXI
DVI/VGA KVM Extender Series also supports traditional analog VGA as well as
digital DVI. All combinations of DVI and VGA (graphics cards and monitors) are
supported, allowing equipment to be mixed. In a mixed analog/digital application,
some adjustment of the video signal is necessary to optimize the analog-digital signal
conversions. DDXI DVI/VGA KVM Extenders are equipped with various automatic
and manual video correction tools in an on screen utility (see page 25).

2.2 Glossary

The following terms are used in this guide:

CATx Any Category 5, 5e, 6 or higher cable.

Multimode Any multimode 2-fiber cable 50/125µ or 62.5/125µ

Singlemode Any singlemode 2-fiber cable 9/125µ

PSU The desktop power supply connected to the Local/Remote unit.

KVM Keyboard, Video and Mouse.

Console A keyboard, monitor, and mouse, plus optional serial/audio

devices.

Dual Access A system allowing connection of Local and Remote user

consoles.

Single Head An extender system that supports one monitor.

Dual Head An extender system that supports two monitors.

DDXI DVI/VGA KVM EXTENDER FAMILY

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Figure 1 KVM extender system

Local Access

Dual Video Support

Serial/Audio and USB
extension options

KVM extension over CATx
or fiber optic cables.

LOCAL unit

REMOTE unit

OVERVIEW

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2.3 Features

All members of the DDXI DVI/VGA KVM Extender Series offer the following features:

• Support for high video resolution over extended distances:
1600x1200@60Hz over all allowed distances - all lower resolutions with refresh
rates of at least 75Hz

• An optional available device with higher data transfer (2,5GBit/sec) allows a
resolution up to 1920x1200@60Hz

• All models come with dual access, to allow local or remote operation
(Local DVI access limited to screen resolutions up to 1280x1024).

• All control and video tuning carried out using an on screen display (OSD) with
settings stored in EEPROM memory.

• Local/Remote unit firmware and settings flash upgradeable.

• Intelligent PS/2 keyboard and mouse emulation ensures PCs do not lock-up and

allows peripherals to be hot-plugged.

• 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 (16-bit digitized) support on certain models enables
high-quality, low-noise audio extension.

• USB support on certain models; connect up to four USB devices directly to the
USB hub on the remote unit.

• Status indicator LEDs on each device.

• Small footprint chassis.

• Rack mount options available.

• CPU cables + Adapters included.

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2.4 Product Range

There are eight products in the range and various upgrade kits:

DVI/VGA-only devices

K439-0W DVI Upgrade kit for additional video channel – CATx

(also as option for Dual Head)

K437-0W DVI Upgrade kit for additional video channel –

Multimode (also as option for Dual Head)

K438-0W DVI Upgrade kit for additional video channel –

Singlemode (also as option for Dual Head)

PS/2 Style Kits

K439-1W DVI-Extender Set: PS/2 Dual Access, CATx

K437-1W DVI-Extender Set: PS/2 Dual Access, Multimode

K438-1W DVI-Extender Set: PS/2 Dual Access, Singlemode

USB Style Kits

K442-2U DVI-Extender Set: USB Dual Access, Multimode

K442-2U DVI-Extender Set: USB Dual Access, Singlemode

Upgrade Kits

421-AU Audio/Serial Upgrade kit

421-TM PS/2-keyboard/mouse Upgrade kit for USB devices

437-25 2.5Gbit Upgrade for Multimode devices with a

resolution of 1920x1200 @60Hz

438-25 2.5Gbit Upgrade for Singlemode devices with a

resolution of 1920x1200 @60Hz

437 -G2 Double-width housing (for Dual Head or audio/serial

upgrades)

OVERVIEW

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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.

• Audio: Input and output are line-level. Amplified speakers are required. A

microphone may be directly connected to the Remote unit (optional pre­amplification).

• Serial: Transparent up to 19.2K Baud. 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.

• USB: compatible to USB 1.0 and USB 1.1. Transmission fully transparent.
Some USB-CDROM or DVD burning devices may not work properly.

• Analog Video: VGA to UXGA. Separate sync, composite sync, or sync-on-
green. Maximum resolution and refresh rates depend on cable length and cable
type (see Appendix H: Specifications, page 42).

• Digital Video: DVI single link for resolution up to 1600x1200 at 60Hz. Frame
rates and colors depend on device type (CATx or Fiber – see Appendix D:
Video Modes and Frame Rates, page 49)

DDXI DVI/VGA KVM EXTENDER FAMILY

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2.6 How to Use This Guide

This guide describes the installation and configuration of the DDXI DVI/VGA KVM
Extender Series. Although the connection and operation of the system 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 audio and serial equipment connect directly to the
Remote unit.

For information about connection and installation, see Installation, page 17.

Interconnection Cable

For DVI-KVM -CAT Extenders, you will need CATx (any category 5, 5e, 6 or higher)
cable, terminated with RJ45 plugs, to connect the Local and Remote units. Other
units require singlemode or multimode fibers (see Interconnection Cable

Requirements, page 18.

Adjusting Video

Due to the digital nature of the transmitted signals, there is no distortion of video
signals or skew problem even with CATx interconnection cables.

If you do not have a DVI source and a DVI monitor, you will need to adjust the
monitor and/or the Extender to the picture width and the pixel phase. You can do this
using the Auto Adjust or Manual Adjust procedures (see page 37).

• For experienced users there is a Quick Setup section at the start of this guide
(see page 8).

• For the full procedure, see Monitor Setup (page 36) and/or Extender Setup
(page 37).

INSTALLATION

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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 DDXI DVI/VGA KVM-Extender
more conveniently.

3.1 Package Contents

You should receive the following items in your extender package (all types):

• Extender Remote unit.

• 6V DC 12W universal power supply for Remote unit.

• Extender Local unit.

• 6V DC 12W universal power supply for Local unit.

• 2x DVI-I to VGA adapter (DVI-I dual link male to HD15 female) connector.

• 1x VGA to DVI-I adapter (HD15 male to DVI-I dual link female) connector.

• Programming cable (DB9 female to RJ11 4p4c).

• User manual.

• 2x German-type power cord.

All DVI/VGA-only models are supplied with:

• DVI-I video (DVI-I dual link male-to-male) connector

All PS/2 models are supplied with:

• KVM CPU cable set (1.8m) with PS/2 (6-pin mini-DIN male-to-male) keyboard
and mouse connector and DVI-I video (DVI-I dual link male-to-male) connector

All USB types are supplied with:

• DVI-I video cable (DVI-I dual link male-to-male)

• USB cable (USB type A to type B)

• 5V DC 12W universal power supply for Remote unit

(only required when connecting two or more High Power USB devices -
see Appendix E: USB – High Power/Low Power).

• 1x German-type power cord (additional)

If anything is missing, please contact Technical Support (see Appendix G: Calling
Technical Support).

DDXI DVI/VGA KVM EXTENDER FAMILY

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3.2 Interconnection Cable Requirements

To connect the Local and Remote units you will need:

• CATx Modules: S/UTP (CAT5) cable acc. to EIA/TIA 56A or TSB 36 or Digital
STP 17-03170. Four pairs AWG 24. Pinout acc. EIA/TIA 568A (10BaseT).
Screen must be connected on both ends. Please ensure that the connection is
tension-free.

• Fibre Cables:



Multimode: Two fibres 50µm or 62.5µm. E.g. I-V(ZN)H 2G50 (In
house patch cable)or I-V(ZN)HH 2G62,5 (In house Breakout cable) or
I/AD(ZN)H 4G50 (in house OR outdoor Breakout cable, stress
resistant) or A/DQ(ZN)B2Y 4G62,5 (outdoor cable, stress resistant
with protection against animal biting) All notations acc. VDE
specification.



Singlemode: Two fibres 9µm. E.g. I-V (ZN)H 2E9 (In house patch
cable) or I-V(ZN)HH 2E9 (In house Breakout cable) or I/AD(ZN)H 4E9
(in house OR outdoor Breakout cable, stress resistant) or
A/DQ(ZN)B2Y 4G9 (outdoor cable, stress resistant with protection
against animal biting) All notations acc. VDE specification.

A point to point connection is required. Having one or more patch
panels in the line is possible and allowed. Not allowed is a
connection from the fibre link interface to any other products,

especially telecommunications or network equipment.

• DVI, PS/2-Keyboard, PS/2-Mouse: Connect the supplied KVM CPU cable set
to your CPU (KVM.- Switch, etc.). Please ensure that the connection is tension­free! Devices K455-1W + K455-2W

• DVI, USB-Keyboard, USB-Mouse: Connect the supplied KVM CPU cable set to
your CPU (KVM.- Switch, etc.). Please ensure that the connection is tension­free! Devices K455-1U + K455-2U

• DVI: Connect the supplied DVI CPU cable set to your CPU (KVM - Switch, etc.).
Please ensure that the connection is tension-free! Devices K455-2W + K455-2U

• VGA Input: If you are using a VGA graphic source please use the delivered
DVI/VGA adapter.

• VGA Output: If you are using a VGA monitor please use the delivered VGA/DVI
adapter.

• Power Supply: Connect the supplied 6V/DC power supplies to the Plug
terminal on the rear of both Local and Remote units.

USB devices have an additional power supply. You need to attach this PSU to
the Remote unit if the total power consumption of the attached USB devices
exceeds 500mA (see Appendix E: USB – High Power/Low Power).

INSTALLATION

19

3.3 System Setup

To install your DDXI DVI/VGA KVM Extender system:

1. Switch off all devices.

2. Connect your keyboard, monitor(s) and mouse to the Remote unit as shown in
Figure 2 (K439-1W), Figure 4 (K437-1W/K438-1W) or Figure 6 (K442-2U/K443­2U).

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.

3. Connect the interconnect cable to the INTERCONNECT socket(s) as shown in
Figure 2 (K439-1W), Figure 4 (K437-1W/K438-1W) or Figure 6 (K442-2U/K443­2U).

4. Connect the 6V power supply to power the unit.

Only use the power supply originally supplied with this
equipment or a manufacturer-approved replacement.

5. 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 3 (K439-1W), Figure 5 (K437­1W/K438-1W) or Figure 7 (K442-2U/K443-2U).

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

6. For 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.

7. Connect the Interconnection cable from the Remote unit to the
INTERCONNECT socket on the Local unit as shown in Figure 3 (K439-1W),
Figure 5 (K437-1W/K438-1W) or Figure 7 (K442-2U/K443-2U).

8. Power up the system.

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Figure 2 K439-1W Remote Unit

Figure 3 K439-1W Local Unit

DVI-I Connector – DVI and
VGA output – connect to
Remote console monitor

Connect to 6V
Power supply

Programming connector –
for firmware upgrades

Connect to PS/2 keyboard and
mouse using supplied cables

INTERCONNECT – carries video and
data signals – connect to Local unit
with CATx cable

INTERCONNECT – carries video
and data signals – connect to
Remote unit

Connect to Local
console keyboard
and mouse

Connect to CPU’s
keyboard and
mouse sockets

Connect to Local
console monitor

Connect to 6V
Power supply

Programming
connector – for
firmware upgrades

Connect to CPU
video card output

DVI-I Connectors

INSTALLATION

21

Figure 4 K437-1W/K438-1W Remote Unit

Figure 5 K437-1W/K438-1W Local Unit

DVI-I Connector – DVI and
VGA output – connect to
Remote console monitor

Connect 6V
Power supply

Programming connector –
for firmware upgrades

Connect PS/2 keyboard and
mouse

INTERCONNECT – carries video
and data signals – connect to
Local unit

INTERCONNECT – carries video
and data signals – connect to
Remote unit

Connect to Local
console keyboard
and mouse

Connect to CPU’s
keyboard and
mouse sockets

Connect to Local
console monitor

Connect 6V
Power supply

Programming
connector – for
firmware upgrades

Connect to CPU
video card output

DVI-I Connectors

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Figure 6 K442-2U/K443-2U Remote Unit

Figure 7 K442-2U/K443-2U Local Unit

DVI-I Connector – DVI and
VGA output – connect to
Remote console monitor

Connect 6V
Power supply

Programming connector –
for firmware upgrades

4xUSB connectors for
keyboard, mouse and other
devices, for example, printer

INTERCONNECT – carries
video and data signals –
connect to Local unit

INTERCONNECT – carries video
and data signals – connect to
Remote unit

USB input – connect to CPU

Connect to Local
console monitor

Connect 6V
Power supply

Programming
connector – for
firmware upgrades

Connect to CPU
video card output

DVI-I Connectors

Connect 5V
Power supply for
USB high power

USB

Power

INSTALLATION

23

3.4 Diagnostic LEDs

Each Extender unit is fitted with four indicator LEDs: Communication Error, Link
Status, Device Ready and Video Signal. The Indicator LEDs are located in the same

positions on all models in the DDXI DVI/VGA KVM Extender range. The
Communication Error and Link Status LEDs are to the left and right, respectively, of
the Interconnect sockets. The Device Ready and Video Signal LEDs are next to the
Power socket.
As an example, the location of the LEDs is shown below for K439-1W Remote and
Local units:

Communication Error Link Status Communication Error Link Status

Video Signal Device Ready Device Ready Video Signal
(Green) (Red) (Red) (Green)

Figure 8 Diagnostic LEDs on Remote (left) and Local (right)

K439-1W units

LED Appearance Diagnostics

Communication
Error

Off
Flashing

slow

medium

fast

No communication error for >60 minutes
Indicates number of communication errors
during previous 60 minutes:

10-100 (CATx) 1-2 (Fiber)
100-1000(CATx) 3-10 (Fiber)
>1000 (CATx) >10 (Fiber)

Error counter cleared automatically 60 minutes after previous communication
error.

Link Status On

Flashing

Link connection is locked
Interconnection cable not connected or not
functioning

Device Ready
(Red LED)

Off
On

Device not ready
Device ready

Video Signal
(Green LED)

Off
On

No video signal or valid mode detected
Attached and valid mode detected

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3.5 Access Switching

PS/2 variants of the DDXI DVI/VGA KVM Extender series offer dual access through
both Local and Remote consoles (see Figure 1). Keyboard and mouse activity
operates on a first-come, first-served basis. When the keyboard and mouse is in use
at one console, the Extender blocks access at the other until there is no keyboard or
mouse activity for a defined period – the inactivity timeout (2 seconds – the default,
or 15 seconds). A user can then gain control by any keyboard action or by pressing
left and right mouse buttons simultaneously.

The inactivity timeout period and the choice of keyboard only or mouse and keyboard
initiation is determined by jumper settings on the keyboard/mouse daughterboard
(see Appendix C: System Upgrade & Dual Access, page 48).

3.6 Private Mode

On PS/2 systems, a user at one console can lock out the other console by triggering
a ‘Private Mode’ function. This prevents the inactive console from being used, even if
the inactivity timeout period expires.

To start a Private Mode session on a console, press the ‘hot’ key command
sequence:

<Ctrl> + <Shift> + <Scroll Lock>

On the other console, to indicate that a Private Mode session has been started, the
extender system:

• Illuminates the Num Lock, Caps Lock and Scroll Lock LEDs on the keyboard.

• Displays a blank image on the console’s monitor.

• Locks the keyboard and mouse.

To end the Private Mode session, press the ‘hot’ key command sequence again.

DEVICE CONTROL

25

4. Device Control

If you are using the DVI output from your video card and the DVI input to a TFT
monitor, no adjustment should be required. In other cases, when the video signal is
converted between analog and digital formats, either by the Local unit and/or the
monitor, you may need to optimize the video signal using the Extender’s on-screen
display (OSD).

Figure 9 OSD Utility

You can adjust the following properties using the OSD:

• Adaptation to analog signal sources (VGA/RGB) – see also Monitor Setup,
page 36.

• Color temperature

• Brightness/contrast

• Saturation

• OSD operation, factory reset.

Version information

Screen resolution and
refresh rate

Main menu icons

Submenu/command icons

Menu title

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4.1 Opening the OSD

You can access the OSD in two ways:

• Using the keyboard attached to the Remote Unit:
Note. On USB devices (K442-2U/K443-2U) or DVI upgrade kits (K347-0W/K438­0W/K439-0W), keyboard access is not available. Please use the other method:

• Using our small WINDOWS™ program with a serial connection to the
programming port.

While the OSD is active, the mouse is locked and only menu keystrokes are allowed
at the keyboard. To indicate that the OSD mode is active, the status LEDs (Num
Lock, Caps Lock and Scroll Lock) are flashed. There is a summary of OSD
commands on page 10.

Using the keyboard attached to the Remote Unit

Type the following key sequence at the Remote console keyboard:

<Ctrl> + <Shift> + < I >

Note. On some keyboards, <Ctrl> is replaced by <Strg>.

To navigate within the OSD:

• Use the left and right arrow keys to highlight a submenu and/or function.

• Press the <ENTER> key to select the highlighted submenu or function.

• Select the Exit icon to go back to the previous menu level.

• Press the <ESC> key to exit the OSD mode.

Using our WINDOWS™ program

On all devices, you can use our small WINDOWS™ program, running on a
WINDOWS™ computer for OSD access:

1. Download the program from our server

2. Connect the programming cable to the programming port of the Remote unit.

3. Connect the programming cable to the serial port of your computer, where the
program is running.

4. Start the program and follow the on-screen instructions.

5. Type in the following key sequence:
< O > + < S > + < D > followed by <ENTER>

When the OSD starts, it displays information about the attached device and firmware
version, for example:

DEVICE CONTROL

27

Modul Name : DVI-KVM-12lo
Version : Vers.1.3
Date : 03/05/15

To navigate within the OSD:

• Use the <L> and <R> keys to highlight a submenu and/or function.

• Press the <S> key to select the highlighted submenu or function.

• Select the Exit button to go back to the previous menu level.

• Press the <X> key to exit the OSD mode.

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4.2 Using the OSD

The OSD is an icon-based utility. The top line of symbols shows the main menu
categories:

Input Select

Specify whether the input is analog (VGA) or digital (DVI)

Scale Mode
Choose whether transmission occurs at the original screen resolution
(“transparent”) or the Extender imposes a fixed resolution.

Brightness – Contrast
Adjust brightness or contrast or reset to default values.

Color
Adjust color calibration, temperature, flesh/skin tone, hue and
saturation.

Image
VGA Input source only - Adjust pixel clock and phase.

Tools
Set OSD position and size, fixed scale sharpness, color depth,
factory reset.

1. Use the left and right arrow keys (<L> and <R> keys on terminal or in Windows
program) to highlight the icon you want. The OSD displays additional icons
relating to commands in the selected menu category.

2. Press the Enter key (<S> key on terminal or in Windows program). The OSD
highlights the first command icon.

3. Use the Left and Right arrow keys (<L> and <R> keys on terminal or in Windows
program) to highlight the command or submenu you want. In the case of the
latter, your selection will cause the OSD to display additional command icons
(Color Temperature commands, for example).

4. Press the Enter key (<S> key on terminal or in Windows program) to accept a
highlighted command. If this requires the increase or decrease of a value
(Contrast, for example), the OSD displays a value bar:

5. Use the Left and Right arrow keys (<L> and <R> keys on terminal or in Windows
program) to change the value as required.

-

+

DEVICE CONTROL

29

6. In many cases, after you have chosen a new setting, the OSD displays the
following confirmation message:

7. Highlight the Yes button and press the Enter key (<S> key on terminal or in
Windows program) to confirm your choice. Alternatively, highlight the No button
and press the Enter key (<S> key on terminal or in Windows program) to discard
the new setting and restore the previous value.

8. Select the Exit icon to close a submenu.

9. Press the Esc key (<S> key on terminal or in Windows program) to close the
OSD, saving all settings, and restore normal mouse and keyboard functions.

The following table summarizes the keyboard actions and icons used to navigate the
OSD utility, and to select and adjust the Extender’s parameters:

Key/Icon

Remote
Keyboard

Terminal or
Windows
program

Action

Esc <X>

Close the OSD, restore normal keyboard
and mouse functions.

Return to previous Menu selection.

Enter <S>

Open the highlighted menu or submenu
Accept the highlighted command

Left arrow <L>

Select the previous menu or command
icon
Decrease the highlighted parameter

Right arrow <R>

Select the next menu or command icon
Increase the selected parameter

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Input Select

Some graphic cards are equipped with both DVI and VGA outputs. On
powering up the CPU, the Extender system uses the first detected signal
unless you explicitly specify the input type. Use the Input Select menu to

specify the type of video signal to be used by the Local unit. The actual graphic
source is displayed with a ‘’ symbol (for example, VGA).

Figure 10 Input Select menu

Scale

Use the Scale menu to specify whether the Extender system changes the
resolution of the input video. You can set the device for transparent

transmission. In this case, the Remote unit generates a screen resolution
and refresh rate to match that of the source. You can also specify that the output
displays at a fixed screen resolution, regardless of that of the input signal. You might
want to use a fixed resolution if your monitor is not able to display the generated
resolution or, for example, if you have a server farm with many different CPUs each
having a different screen resolution. With a transparent transmission, it could take a
long time to regain a picture on the screen each time you switch to a different CPU.

Figure 11 Scale Mode menu

Downscaling is only available with VGA signals. With a DVI input, you can select
downscaling but it will not work – only upscaling has an effect.

VGA Video input to Local unit

DVI Video input to Local unit

Return to main menu

Transparent transmission: No modification
of resolution/refresh rate, Remote unit
always generates an exact reproduction of
the source signal

Choice of three fixed transmissions at
refresh rate of 60Hz (for LCD/flat screens)
800x600, 1024x768, 1280x1024

Return to main menu

Choice of three fixed transmissions at
refresh rate of 75Hz (for CRT/tube screens)
800x600, 1024x768, 1280x1024

DEVICE CONTROL

31

Brightness/Contrast

Use this menu to adjust the brightness and contrast of the video image, or

to adjust the black level of an LCD display.

Figure 12 Brightness-Contrast menu

Select Colors and Color Temperatures

Use the Colors menu to adjust the color balance of the video image. The

menu provides a number of options including automatic calibration, manual

adjustment in RGB or CMY color space, hue and saturation adjustment and

the setup of flesh/skin tone.

Hue Saturation Back to main menu

Figure 13 Color menu

Adjust Brightness

Adjust Contrast

Adjust Black level

Return to main menu

Automatic color calibration

Standard RGB color selection

View Color temperature submenu
(see Color Temperature, page 36)

Flesh tone/Skin tone

Set up colors in CMY space – automatically
adjusts settings in RGB space

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Color Temperature

Use the Color Temperature submenu to set up the color profile in RGB color

space or by using one of five predefined color temperatures. To view this

menu, select the Colors icon from the main menu and then select the Color

Temperature icon.

Figure 14 Color Temperature submenu

Image

VGA inputs only

Use the Image menu to adjust the vertical and horizontal screen position

and to set the pixel clock and phase.

Manually adjust the
number of pixels per
line (Pixel clock)

Figure 15 Image menu

Manually adjust the best phase (best point for A/D
conversion within each pixel)

Set up colors in RGB space – automatically
adjusts settings in CMY space

Choice of five color temperature settings:
4200k, 5000k, 6500k, 7500k, 9300k

Back to Color menu

Automatic detection of the number of pixels
per line and the best phase (best point for
A/D conversion within each pixel) see also
Extender Setup, page 41.

Back to main menu

Manually adjust the vertical screen position

Manually adjust the horizontal screen
position

DEVICE CONTROL

33

Tools

Use the Tools menu to set the position and size of the OSD window, adjust

the sharpness for a fixed resolution setting, set the color depth, reset the

Extender system to its factory default settings or provide a test pattern.

Figure 16 Tools menu

OSD

Use the OSD submenu to define the position and size of the OSD window.

To view this menu, select the Tools icon from the main menu and then

select the OSD icon.

Figure 17 OSD submenu

Set the position of the OSD window (see
OSD, page 37)

Reset Extender to factory default settings

Adjust sharpness (fixed resolution modes
only). When resolution is changed by an
imposed fixed resolution, sharpness can be
affected. Use this option to switch between
three settings for optimum sharpness

Select color depth
(see Color Depth, page 39)

Choose whether to automatically
adjust pixels per line and pixel
phase after a mode change
(see Factory Reset

Use the Factory Reset
submenu to reset the unit to
factory defaults, save user

Manually adjust the horizontal position of
the OSD window

Manually adjust the vertical position of the
OSD window

Back to Tools menu

Toggle the size of the OSD window
between single and double size

Display a ‘burst’ pattern at the
remote console for monitor setup
(see Monitor Setup, page 42)

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Factory Reset

Use the Factory Reset submenu to reset the unit to factory defaults, save
user presets or restore user presets

Figure 18 Factory Reset sub-menu

Auto Configuration

Use the Auto Configuration submenu to define whether the Local unit

carries out automatic detection of the number of pixels per line and the best

phase after a mode change (a change of screen resolution and/or refresh

rate at the graphic source). Using automatic detection (while displaying an
appropriate test pattern) ensures an optimized image but the procedure introduces a
delay in the picture appearing on the remote console screen. If you want the picture
to appear as fast as possible, and can tolerate a non-optimized image, you may want
to disable this feature. Please note that Auto Configuration is disabled in the default
factory settings.

To view the Auto Configuration menu, select the Tools icon from the main menu and
then select the Auto Configuration icon.

Figure 19 Auto-Configuration submenu

Disable Automatic detection of pixels per
line and phase after a mode change

Enable Automatic detection of pixels per
line and phase after a mode change

Back to Tools menu

Factory Reset: Restore originally equipped
Setup data

Restore User Data: Restore previously
saved User data

Save actual User Data in internal memory

Back to Tools menu

DEVICE CONTROL

35

Color Depth

Use the Color Depth submenu to select the color depth of the transmitted

screen picture. Transmissions can be in high color mode or low color mode.

High color mode produces a better quality image but results in a lower
frame rate (fps). Use low color mode if you require fast screen changes, for example
video applications. Use high color mode if you need precise images, for example,
medical applications. Please see Appendix D: Video Modes and Frame Rates
(page 49) for more information about frame rates and supported screen resolutions.

Color Depth

Color Mode CATx Fiber

Low 5 bits/color

15 bits total

32768 colors

6 bits/color

18 bits total

262144 colors

High 7 bits/color

21 bits total

2.1M colors

8 bits/color
24bits total

16.78M colors

To view this menu, select the Tools icon from the main menu and then select the
Color Depth icon.

Figure 20 Color Depth submenu

Select low color mode/higher fps

Select high color mode/lower fps

Back to Tools menu

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5. Monitor Setup

This procedure is designed to correct for discrepancies in the video signal due to
analog/digital video conversion by the Monitor. You do not need to follow this
procedure if you have:

• A CRT monitor connected to the Remote unit through the VGA input

• A TFT monitor connected to the Remote unit through the DVI input

In these cases, there is no need to adjust the monitor because the video format is not
converted.

Please make sure that you carry out this procedure before Extender Setup (page

37). If you are using a TFT monitor at the remote console with a VGA cable, both the
Extender AND the TFT monitor digitize the video data stream and affect video
quality. By setting up the TFT monitor first, you ensure that you are correcting
discrepancies due solely to the Extender system in the Extender Setup procedure.

1. Connect the Extender system and display the regular desktop in the desired

screen resolution. Monitor setup may vary depending on screen resolution
and/or refresh rate.

2. Display the OSD utility (see page 26).

3. Select the Tools menu option (see page 33).

4. Select the ‘burst’ pattern option. Your TFT should show fine, 1 pixel wide, black

and white vertical stripes over the entire screen. The OSD will stay visible in the
middle of the screen.

5. Depending on the type of TFT, press the ‘AUTO’ Button on the monitor control

panel or select Auto Adjust in the TFT Setup Menu. Refer to the manual
supplied with your monitor for more information.

6. If the vertical stripes are sharp and without jitter or smearing, the adjustment has

been successful. Go to step 8.

7. If the picture quality is not acceptable after the automatic adjustment, you will

have to manually adjust the pixel clock and pixel phase (in this order). Please
follow the instructions in your monitor’s user manual.

8. Press any key to exit the test pattern display.

9. Exit the OSD.

EXTENDER SETUP

37

6. Extender Setup

6.1 Overview

You need to optimize the video signal across your Extender system if it undergoes
one or more conversions between analog and digital formats. The exact procedure
depends on your Extender setup:

Graphic

s card

Monitor

type

Monitor

Input

used

Video Optimization Procedure(s)

VGA TFT VGA

TFT adjustment (see Monitor Setup, page 36)

Optimization using OSD
(see Setup Instructions for VGA Input, page

38)

VGA CRT VGA

Optimization using OSD
(see Setup Instructions for VGA Input, page

38)

VGA TFT DVI

Optimization using OSD
(see Setup Instructions for VGA Input, page

38)

DVI TFT VGA

TFT adjustment only
(see Monitor Setup, page 36)

DVI CRT VGA No setup required

DVI TFT DVI No setup required

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6.2 Setup Instructions for VGA Input

This procedure is designed to correct for discrepancies in the video signal due to
analog/digital video conversion by the Extender system. You do not need to follow
this procedure if you have a DVI graphics card connected to the Local unit. In this
case, the video signal remains in a digital format through the Extender system.

If you are using a TFT monitor at the remote console with a VGA cable, you should
carry out the Monitor Setup procedure first (see page 36). In this configuration, both
the Extender AND the TFT digitize the video data stream and affect video quality. By
setting up the TFT monitor, you ensure that you are correcting discrepancies due
solely to the Extender system in this procedure. Alternatively, you could replace the
TFT monitor with a CRT monitor while you carry out this procedure. You can then
reconnect the TFT monitor and optimize its video image afterwards.

1. Download the test pattern from our web server:

This is a ‘burst-pattern’ (see Figure 20) - a picture with alternating, 1 pixel wide
black and white, vertical stripes.

If you are unable to view the test card, display some black text on a white
background. For example, you could open Notepad, maximize it to full screen,
and fill the page with letter ‘I’s in a 12pt font. Proceed with step 3.

2. Select the burst-pattern graphic as desktop background for the PC:

From the Start menu, choose Settings | Control Panel | Display |
Backgrounds.
Search for the downloaded burst file, using ‘Search for’.
Select the tiled display option.
Your desktop should show fine black and white vertical stripes over the entire
desktop.

3. Display the OSD (see page 26).

4. Select the Image menu option:

5. Select the first command icon:

Automatic detection of number
of pixels per line and the best phase.

6. Assess the desktop test pattern. If the vertical stripes are sharp and without jitter

or smearing, the adjustment has been successful. Go to step 10.

7. If the picture quality is not acceptable after the automatic adjustment, you will

have to manually adjust the pixel clock and pixel phase (in this order).

EXTENDER SETUP

39

8. With a poorly adjusted pixel clock you may see one or more vertical areas,

where the lines are smeared (see Figure 21a):

a. Return to the OSD utility and select the menu command:

Manually adjust the number of pixels per line (Pixelclock)

from the Image menu.

b. Adjust the pixel clock value until all stripes have disappeared.

c. Confirm the setting.

9. Problems with the pixel phase will cause horizontal noise, horizontal wave-

formed lines, flicker or smearing with zebra-pattern (see Figure 21b):

a. From the OSD’s Image menu, select the menu command:

Manually adjust the best phase (best point for A/D conversion within each

pixel).

b. Modify the phase until all distortions have disappeared.

c. Confirm the setting.

10. If appropriate, reattach your TFT monitor and adjust its image according to the

manufacturer’s instructions.

11. Reinstall your preferred desktop background picture.

Figure 21 Burst test pattern applied to desktop showing

problems with (a) pixel clock setting, (b) pixel phase
setting.

(a) (b)

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7. Troubleshooting

7.1 Video

There isn’t a picture.

Check the power supply connection at the Local unit. Is the Device Ready

(Red LED) at the Local unit illuminated (see page 23)? If not, the internal

power-supply may be damaged or there may be an internal error.

Check the power supply connection at the remote unit. Is the Device Ready

(Red LED) at the Remote unit illuminated (see page 23)? If not, the internal

power-supply may be damaged or there may be an internal error.

Check that the Interconnection cable is connected at the Local Unit and the

Remote Unit. Is the Link Status LED illuminated (see page 23)? If not, there

may be a problem with the Interconnection cable:

• Fiber types: Check that the fiber optical cable is correctly connected.
The strand connected to the Local Unit’s TX (left-hand connector) must
run to the Remote Unit’s RX (right-hand connector) and vice versa.

• Fiber types: There may be one or more broken fibers. Do NOT look
into a fiber’s end directly while it is connected to a Local or Remote
unit! Are the Link Status LEDs at the Local Unit AND at the Remote
Unit illuminated? If they are flashing, check for broken fibers using a
flashlight.

• Fiber types: Are the cables of the recommended fiber type? If you
used your own fiber optical cable (not supplied by Black Box), please
ensure that you have used 50µ or 62.5µ fiber with a multimode device
or a 9µ fiber with a singlemode device. Other fiber-types and poly-fibers
are not supported.

• CATx types: Check that you have wired the cable ‘straight through’.
‘Cross wired’ cables will not work.

• CATx types: Check that the cable is correctly wired. Use a CATx cable
tester for checking wrong wired or broken strands.

Check that you are using a supported video mode (see Appendix D: Video
Modes and Frame Rates). At the Remote Unit, is the Video Signal LED
illuminated (see page 23)?

Check your total system configuration. Local units digitize incoming VGA
signals and must receive perfect SYNC signals: no glitches, spikes or
deformed signals are allowed. Long/wrong or bad cables, or additional
components like Splitters or KVM Switches may deform the SYNC signals.

Also check that the signals (level and signal form) match the VESA
Standard requirements.

TROUBLESHOOTING

41

There is horizontal jitter on the picture.

The pixel clock and/or phase is misaligned: Refer to page 38.

Characters are smeared.

The phase is misaligned: Refer to page 38.

Thin vertical lines are missing.

The phase is misaligned: Refer to page 38.

Colored areas of the screen look like an oil film.

In some circumstances, the Extender’s internal video processor may lose its
firmware. In this case, it is necessary to reset the unit. A power cycle is NOT
sufficient! Please use the OSD to make a Factory Reset (see page 33).

7.2 Keyboard & Mouse

The keyboard or mouse doesn’t work.

Is there a picture? If not, check the solutions suggested in the previous
section.

If the picture is OK, check that the model of mouse or keyboard is
supported.

The mouse pointer doesn’t move when I move the mouse.

Is the other console currently active (see Access Switching, page 24)? In
a dual access system, the Local unit initially has control each time you boot
up the system or power cycle the Remote unit. You will also observe this
effect at one console when the other console has been in use.

If you want to get control at a console, you have to either press any key on
the keyboard or, optionally, press the left and right mouse buttons
simultaneously (this is determined by a jumper setting, see Appendix C:
System Upgrade & Dual Access, page 48). To make a console active, we
suggest you press and release one of the Shift keys since this will not affect
the current PC activity.

Please note that you cannot gain control if the other console is in use or
until the inactivity timeout period has expired.

DDXI DVI/VGA KVM EXTENDER FAMILY

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Appendix A: Example Applications

This section illustrates some specific applications using Extender units:

• USB fiber with local access (Figure 22).

• CATx with audio/serial support in dual wide housing (Figure 23).

• Dual Head application with PS/2 keyboard/mouse, USB support and audio/serial

in 19”/1U (Figure 24).

• 3x Dual Head application in 19”/2U (Figure 25).

For more details, please discuss suitable extension architecture with Technical
Support (see Appendix G: Calling Technical Support).

Figure 22 USB extension with local access

K442

-

2U/K443

-2U

Local Unit

USB and graphics input from
CPU with local console
graphics output

USB hub providing local console

mouse and keyboard connections

K442

-

2U/K443

-2U

Remote Unit

USB and graphics
output

USB extension

Local console

CPU USB and

graphics output

Remote console

APPENDIX A: EXAMPLE APPLICATIONS

43

Figure 23 CATx application with local access and audio/serial

extension

K439

-1W and

421-AU

units in double width
housing (437-G2)

Remote Unit

Local console

CPU

PS/2 keyboard and
mouse, graphics and
audio/serial output

Local Unit

Remote console

Audio/serial extension

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Figure 24 Dual Head application with PS/2, USB and audio/serial

extension

K442

-2U,

K437-0W and
421-AU units
in 19” 1U rack

Remote Unit

Local

console with
dual video

Remote

console

Secondary

video

USB devices

Audio/serial

devices

CPU

USB, graphics and
audio/serial output

Local Unit

APPENDIX A: EXAMPLE APPLICATIONS

45

Figure 25 Multiple dual head application

3x

K438

-1W and 3x

K438-0W units in 19” 2U
rack

Remote Unit

3 x CPU

PS/2 keyboard/mouse,
dual graphics output

Local Unit

Remote console with

secondary video

Remote console with

secondary video

Remote console with

secondary video

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Appendix B: Rack Mount Options

Extender units can be mounted in a 19” rack using the mounting kit:

DVI-KVM-Rackmount Kit

This contains the following parts:

Figure 26 Rack Mounting Kit

To mount a unit:

1. Align the holes on the base plate with the vacant screw holes on the base of the
extender unit.

2. Fasten the base of the unit to the plate of the mounting kit using the supplied
screws.

3. Close the remaining gaps with blanking plates.

Two small blanking plates

Narrow strip

Wide blanking plate

Base plate

M3x5 Screws (14)

APPENDIX B: RACK MOUNT OPTIONS

47

The kit allows you to mount various combinations of regular and double width
housings:

1. One regular unit (using two small plates) 2. Two regular units (using one small

plate)

3. Mounting of three regular units 4. Mounting of one double width unit

(using wide plate)

5. Mounting of double width and regular units ( using narrow strip)

Figure 27 Rack Mount Kit

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Appendix C: System Upgrade & Dual Access

System Update / Onboard Programming

It is occasionally necessary to update the firmware of the system. Normally, this
procedure is carried out in the factory. If you want to update the firmware yourself,
contact Technical Support. You will need a programming cable and software to carry
out the update. Please follow the supplied instructions carefully.

Dual Access (PS/2 devices only)

Two jumpers located on the keyboard/mouse daughter board in the Remote unit
allow you to:

• Change the Inactivity Timeout period between 2s (the default) and 15s. This is
the minimum time of mouse and keyboard inactivity required at one console,
before the Extender system allows the user at the other console to gain control.

The upper jumper switch (labeled Time) selects the inactivity timeout period.
When closed, the setting is 2 seconds. When open, the setting is 15 seconds.

• Select the method for gaining control. Two choices are available:

• Any keyboard activity or by pressing the left and right mouse buttons

simultaneously (the default), or

• Keyboard activity only.

The lower jumper switch (labeled KeyB) selects the method of switching
between local and remote consoles. When open, the setting is for any keyboard
action or by pressing the left and right mouse button simultaneously. When
closed, the method is set to keyboard activity only.

Inactivity
Timeout (s) 15 2 2 15

Keyboard/
Mouse action? K&M K K&M K

(factory default)

Figure 28 Alternative jumper settings for dual access control

Time

J2

J3

KeyB

Time

J2

J3

KeyB

Time

J2

J3

KeyB

Time

J2

J3

KeyB

APPENDIX D: VIDEO MODES AND FRAME RATES

49

Appendix D: Video Modes and Frame Rates

The following table shows the video modes supported by the DDXI DVI/VGA KVM
Extender series and the expected frame rates (in brackets the frame rates using a

2.5GBit module) over fiber and CATx interconnects at both high color (hiCol) and low

color (loCol) settings. The Extenders are able to synchronize video modes that do
not differ by more than 10% from those listed below.

Visible

Resolution

Clock Rates Frame Rate

Fiber

Frame Rate

CATx

Video

Mode

Pixels Lines Horiz

kHz

Vert.

Hz

Dot

Clock

MHz

Hi

Col

Lo

Col

Hi

Col

Lo

Col

DOS graphic
Mode 640 350 70 31,5 25,2 70 70 70 70
Vesa Standard 640 350 85 37,9 31,5 85 85 85 85
VGA 640 400 56 24,7 20,9 56 56 56 56
VGA 640 400 70 31,4 25,1 70 70 70 70
Vesa Standard 640 400 85 37,9 31,5 85 85 43 85
Vesa Standard 640 480 60 31,5 25,2 60 60 60 60
Mac Mode 640 480 67 35,0 31,4 67 67 67 67
Vesa Standard 640 480 72 37,9 31,5 72 72 36 72
Vesa Standard 640 480 75 37,5 31,5 75 75 38 75
Vesa Standard 640 480 85 43,3 36,0 85 85 43 85
DOS Text
Mode 720 400 70 31,5 28,4 70 70 70 70
Vesa Standard 720 400 85 37,9 35,5 85 85 43 85
NTSC
progressive

720 480 60 31,5 27,0 60 60 60 60
PAL
progressive 720 576 50 31,3 27,0 50 50 50 50
Vesa Standard 800 600 56 35,2 36,0 56 56 28 56
Vesa Standard 800 600 60 37,9 40,0 60 60 30 60
Vesa Standard 800 600 72 48,1 50,0 36 (72) 72 (72) 36 36
Vesa Standard 800 600 75 46,9 49,5 38 (75) 75 (75) 38 38
Vesa Standard 800 600 85 53,7 56,3 43 (85) 85 (85) 43 43
Mac Mode 832 624 75 49,7 55,7 38 (75) 75 (75) 38 38
Vesa Standard 1024 768 60 48,4 65,0 30 (60) 30 (60) 20 30
Vesa Standard 1024 768 70 56,5 75,0 35 (70) 35 (70) 23 35
SUN Mode 1024 768 72 57,8 74,9 36 (72) 36 (72) 24 36
Vesa Standard 1024 768 75 60,0 78,8 38 (75) 38 (75) 25 38
Vesa Standard 1024 768 85 68,7 94,5 28 (42) 42 (85) 21 28
DMT1185 1152 864 70 63,8 100,5 23 (35) 35 (70) 18 23
Mode 1152 864 70 63,8 94,4 23 (35) 35 (70) 18 23
Vesa Standard 1152 864 75 67,5 108,0 25 (38) 38 (75) 19 25
SUN Mode 1152 900 66 61,8 94,4 22 (33) 33 (66) 17 22
Vesa Standard 1280 960 60 60,0 108,0 20 (30) 30 (60) 15 20
DMT127A 1280 960 75 75 126,0 25 (38) 25 (38) 15 25
Vesa Standard 1280 960 85 85,9 148,5 21 (43) 28 (43) 17 21
Vesa Standard 1280 1024 60 64,0 108,0 20 (30) 30 (60) 15 20
SUN mode 1280 1024 66 71,7 117,0 22 (33) 33 17 22
SGI 1280 1024 72 76,7 128,8 24 (36) 24 (36) 14 24
HP Workstation
B123L 1280 1024 72 78,1 135,0 24 (36) 24 (36) 14 24
Vesa Standard 1280 1024 75 80,0 135,0 25 (38) 25 38) 15 19
Vesa Standard 1280 1024 85 91,1 157,5 21 (43) 28 (43) 14 21
TV Mode 1280 768 60 48,1 81,2 30 30 20 30
Vesa CVT 16:9 1280 720 60 44,8 74,5 (60) (60) -- -­WXGA 1280 768 60 48,1 81,2 (60) (60) -- -­WXGA 1280 768 60 47,8 80,0 (60) (60) -- -­TV 1280 1024 50 53,4 90,0 (25) (50) -- -­TV Mode 16:9 1360 765 60 47,6 84,5 (30) (60) -- --

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Plasma TV16:9 1360 768 60 47,7 85,5 (30) (60) -- -­NVIDIA 4:3 1400 1050 60 65,2 121,5 (30) (30) -- -­Linux 4:3 1400 1050 60 64,9 122,0 20 30 15 20
SGI 1600 1024 72 77,6 158,3 18 (36) 24 (36) 12 18
Vesa Standard 1600 1200 60 75,0 162,0 15 (30) 20 (30) 10 15
TV Mode 16:9 1600 900 60 55,8 118,8 (30) (30) -- -­UXGA
genlocked

1600 1200 50 75,0 138,0 (25) (25) -- -­UXGA reduced
blank.

1600 1200 60 75,0 162,0 (30) (30) -- -­TV Mode 16:10 1680 1050 60 65,3 146,2 (30) (30) -- -­TV Mode 16:9 1920 1080 50 56,4 148,5 -- (25) -- -­TV Mode 16:9
reduced blank. 1920 1080 60 66,6 138,5 -- (30) -- -­EIA861B 16:9 1920 1080 60 67,5 148,4 -- (30) -- -­WUXGA 1920 1200 60 74,0 154,0 -- (30) -- --

Frame Rates (FPS)

A DDXI DVI/VGA KVM Extender is not capable of transferring every frame generated
by a graphics card because the net data rate of a Single Link DVI-Interface with

3.5Gbit is much higher than the available transfer rate of the Extenders.

Transmission follows the following scheme:

• Starting with a recognized VS-Signal, the first frame is digitized (on VGA) and
temporarily stored (DVI+VGA) by the Local unit.

• The data are transmitted, using the available net data rate, to the Remote unit.
During this time, frames generated by the graphic card are discarded without
any recognition (frame dropping).

• When data transfer is complete, the Extender system waits for the next VS-
Signal.

Depending on the data volume (affected by the selected screen resolution/refresh
rate), the type of transmission module and the correspondence between the duration
of the data transfer and a multiple of the refresh rate, you should get frame rates in a
range of approximately 15 fps up to the actual refresh rate of the graphic card.

The frame rate counts the number of different pictures that are
displayed in one second. The monitor is always driven with the same
refresh rate as generated by the graphics card or selected in the

OSD.

The human eye is not able to discern more than 15 fps as single pictures. Your DDXI
DVI/VGA KVM Extender is therefore suitable for displaying streaming video in the
highest resolution. To gain a higher frame rate, reduce the screen resolution - video
normally does not require higher resolutions.

In higher resolution, the mouse pointer may show broken movement
over the screen because of the reduced frame rate. Use slower
mouse movements for exact positioning.

APPENDIX E: USB – HIGH POWER/LOW POWER

51

Appendix E: USB – High Power/Low Power

The USB specification allows low power and high power devices to be
attached to, and powered through, the USB hub. Power consumption may

exceed the internal power capabilities of the Extender if you attach more
than one high power device to the Remote Unit hub. In such cases, you are
recommended to use the supplied PSU for powering the USB hub.

The USB specifications allow:

• 100mA for low power devices

• 500mA for high power devices

The DVI-KVM-U-xx can supply up to 500mA. There is no total power limitation, so
consuming more than 500mA may overload the internal power supply and shutdown
the device. This means, you can attach either:

• 1 to 4 low power units or

• 1 high power unit

If your total USB power consumption exceeds 500mA, you need to connect the
supplied PSU before attaching the devices.

Using the power supply unit, you may attach:

• 1 to 4 high power units or

• 1 to 4 low power units or

• Any combination of these

Each port has a regulated power limit of 500mA.

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Appendix F: Audio/Serial Upgrade

The Audio/Serial Upgrade option consists of daughter boards that allow bi-directional
stereo audio and a full-duplex serial data link to be sent across the regular
interconnection cable in addition to keyboard, mouse and VGA/DVI video.

To set up the extender’s audio and serial link, please follow all of the instructions
detailed in this appendix. If you have any questions, contact Technical Support.

Serial Interface - Set Up and Operation

No setting up or user adjustments are required. Please note that on the Dual Access
model, the serial link is always active.

Please bear in mind that the Remote Unit’s serial port is wired as DTE (i.e. 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.

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. Select Xon/Xoff software flow control on the
remote device and PC.

To do this you will need to construct a custom breakout cable. Please contact
technical support for further information.

APPENDIX F: AUDIO/SERIAL UPGRADE

53

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 set up is required unless a microphone is connected to the
remote unit.

Connect up the extender as follows:

Take the line-level output from your sound card (green connector) and connect to
‘Line In’ on the extender.

A set of powered speakers may be connected directly to ‘Line Out’ at the opposite
end of the link.

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 (Red) on your sound card. The sound card should then be set
up to provide additional amplification (+20dB). 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 G: Calling Technical Support

If you determine that your DDXI DVI/VGA KVM Extender is malfunctioning, do not
attempt to alter or repair it. It contains no user-serviceable parts. Contact Technical

Support at.

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 DDXI DVI/VGA
KVM Extender’s firmware revision level:

Version Number Format:
Board: xxLO/RE Myyy Pzzz Auuu Gvvvvvv
Transceiver: C/M/S xx Pyy Mzz
Keyboard/Mouse: P/U xx Vyyy

• 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 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 DDXI DVI/VGA KVM Extender:

• Package it carefully. We recommend that you use the original container.

• If you are shipping it for repair, please include the Unit’s external power supplies.

If you are returning it, please include everything you received with it. Before you
ship the Extender back to your dealer for repair or return, contact him to get a
Return Authorization (RA) number.

APPENDIX H: SPECIFICATIONS

55

Appendix H: Specifications

Power Requirements

Voltage PSU: 90..240VAC-0.5A-47..63Hz/

6VDC-2000 mA

Power required Local Unit: approx. 8W

Remote Unit without keyboard: approx. 8W
Remote Unit with keyboard: approx. 9.5W

Voltage PSU: 90..240VAC-0.5A-47..63Hz/5VDC-2400 mA

Power required Remote Unit USB port with multiple high power

devices, bus powered: approx. 10W

Interface

(Depending on type of device)

Monitor VGA (res.: 1600x1200@60Hz, plug&play

supported)
all lower resolutions at least with 75Hz

DVI (res.: 1600x1200@60Hz, plug&play
supported)

Local Access max. resolution DVI: 1600x1200,

VGA: 1280x1024
output depends on input type VGA or DVI

Keyboard/Mouse IBM PS/2 (power consumption <100mA)

USB USB 1.1 compatible (NO CD-Writer!)

USB-Remote 4 port Hub - low power (max 100mA each) or 1x

high power (max 500mA) without PSU. - high
power (max 500mA each) with additional PSU.

Maximum Length of Interconnection Cable

(Without reboost)

CAT5/5e/6 330ft (100m) with solid trunk cable

200ft (60m) with stranded cable

62.5µm/50µm Multimode 650ft (200m) @62,5µ

1300ft (400m) @50µ

9µm Singlemode 6 ¼ miles (10km)

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Type of Interconnection Cable

CATx Installation cable
AWG24

S/UTP (Cat5) cable acc. EIA/TIA 56A, TSB 36 or
Digital STP 17-03170. Four pairs AWG 24.
Wiring acc. EIA/TIA 568A (10BaseT).

CATx Patchcable AWG26/7 S/UTP (Cat5) cable acc. EIA/TIA 56A, TSB 36 or

Digital STP 17-03170. Four pairs AWG 26/8.
Wiring acc. EIA/TIA 568A (10BaseT).

Singlemode 9 µm Two fibres 9µm. E.g. I-V (ZN)H 2E9 (In house

patch cable) or I-V(ZN)HH 2E9 (In house
Breakout cable) or I/AD(ZN)H 4E9 (in house OR
outdoor Breakout cable, stress resistant) or
A/DQ(ZN)B2Y 4G9 (outdoor cable, stress
resistant with protection against animal biting) All
notations acc. VDE specification.

Multimode 50µm Two fibres 50µm, E.g. I-V(ZN)H 2G50 (In house

patch cable) or I/AD(ZN)H 4G50 (in house OR
outdoor Breakout cable, stress resistant) All
notations acc. VDE specification.

Multimode 62.5µm Two fibres 62.5µm. E.g. I-V(ZN)HH 2G62,5 (In

house Breakout cable) or A/DQ(ZN)B2Y 4G62,5
(outdoor cable, stress resistant with protection
against animal biting) All notations acc. VDE
specification.

APPENDIX H: SPECIFICATIONS

57

Serial Interface

(Available with Serial/Audio Upgrade option only)

Serial Speed Up to a maximum of 19,200 Baud

Serial Data Format Format Independent

Flow Control RTS, CTS, DTR, DSR are sent across link

Audio Interface

(Available with Serial/Audio Upgrade option only)

Description Bi-directional stereo audio link

Transmission Method Digitized virtually CD quality audio (16-bit,

38.4KHz)

Signal Levels Line-Level (5 Volts Pk-Pk maximum)

Input Impedance 47K

Local Unit Connectors 2 x 3.5mm stereo jack socket (Line In & Line Out)

Remote Unit Connectors 2 x 3.5mm stereo jack socket (Line/Mic In & Line

Out)

Microphone Support A microphone may be connected to the Remote

Unit.
Pullup resistor provides bias for condenser
microphone.
Option to set microphone amplification to +17dB.

Size and Shipping Weight

Remote and Local Unit Remote/Local Unit: 6.7”x5.2”x1.7”

(170x133x44mm)
Weight: 2.2lb (1.0kg) each

Shipping box Shipping Box: 18.1”x9.8”x4.7” (460x250x120mm)

Weight: 9.5lb (4.3kg)

Environmental

Operating Temperature 41 to 113°F (5 to 45 °C)

Storage Temperature -13 to 140°F (-25 to 60 °C)

Relative Humidity max. 80% non-condensing

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Appendix I: Connectors and Cables

Extender Connector Pinouts

DVI-I Female connector (on all units)

Pin Signal Pin Signal Pin Signal

1 T.M.D.S data 2- 9 T.M.D.S data 1- 17 T.M.D.S data 0-

2 T.M.D.S data 2+ 10 T.M.D.S data 1+ 18 T.M.D.S data 0+

3 T.M.D.S data 2 GND 11 T.M.D.S data 1 GND 19 T.M.D.S data 0 GND

4 n.c. 12 n.c. 20 n.c.

5 n.c. 13 n.c. 21 n.c.

6 DDC Input (SCL) 14 +5V Power 22 T.M.D.S clock GND

7 DDC Output(SDA) 15 GND 23 T.M.D.S clock +

8 Analog VSYNC 16 Hot Plug recognition 24 T.M.D.S clock -

C1 Analog Red C3 Analog Blue

C2 Analog Green C5 Analog GND C4 Analog HYSNC

1 8 C1 C2

17 24 C3 C4

C5

APPENDIX I: CONNECTORS AND CABLES

59

Mouse In/Out

6 pin miniDIN female

Pin Signal

1 MOUSE DATA

2 n.c.

3 GND

4 +5V

5 MOUSE CLOCK

6 n.c.

Keyboard In/Out

6 pin miniDIN female

Pin Signal

1 KEYBOARD DATA

2 n.c.

3 GND

4 +5V

5 KEYBOARD CLOCK

6 n.c.

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Programming

Pin Signal

1 TxD (to PC RxD)

2 RxD (from PC TxD)

3 DTR from PC

4 GND

Power

Pin Signal

1 GND

2 Earth

3 n.c.

4 +6VDC

Housing Shield

1

1 2

3 4

APPENDIX I: CONNECTORS AND CABLES

61

Adapter Cables

DVI/VGA Adapter

Remote/Local Unit: DVI-I male connector Monitor: HD15 female
connector

8C1C2

24

C3

C4

1

17

C5

Pin Signal Pin Signal

6 DDC Input (SCL) 15 DDC Input (SCL)

7 DDC Output(SDA) 12 DDC Output (SDA)

8 Analog VSYNC 14 Analog VSYNC

C1 Analog Red 1 Analog Red

C2 Analog Green 2 Analog Green

C3 Analog Blue 3 Analog Blue

C4 Analog HYSNC 13 Analog HSYNC

C5 Analog GND 6,7,8 Analog GND

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Local unit VGA/DVI Adapter

CPU Graphics card: HD15 male connector Local Unit: DVI-I male connector

Pin Signal Pin Signal

15 DDC Input (SCL) 6 DDC Input (SCL)

12 DDC Output (SDA) 7 DDC Output(SDA)

14 Analog VSYNC 8 Analog VSYNC

1 Analog Red C1 Analog Red

2 Analog Green C2 Analog Green

3 Analog Blue C3 Analog Blue

13 Analog HSYNC C4 Analog HYSNC

6,7,8 Analog GND C5 Analog GND

8C1C2

24

C3

C4

1

17

C5

APPENDIX I: CONNECTORS AND CABLES

63

CATx Cable and Connector

NOTES

64