IHSE 234 User Manual

THE VTO2/VRO2 V6.00 KVM-EXTENDER FAMILY

Welcome to the VTO2/VRO2 V6.00 KVM-

Extender Family!

Thank you for purchasing a VTO2/VRO2 V6.00 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 VTO2/VRO2 V6.00 KVM-Extender not only allows you to remotely
locate a console (Monitor, Keyboard, Mouse + optional serial/audio devices) over great
distances without any loss in signal quality (up to 1000m/3250ft) but also to do this in an EMI
hazardous environment.

Wherever you have great distances: airports, roller plants, distributed data centres; or in a
range of applications where you have large electromagnetic generators or loads, magnetic
resonance tomographs, induction furnaces, current generators; the VTO2/VRO2 V6.00
KVM-Extender is a solution for remotely locating your console. Three different models cover
a range of applications: a VGA-only extender – for when you just need a remote display
screen; a KVM extender for a standard remote console – Monitor, Keyboard and Mouse; and
a third unit with KVM extension and additional serial and bi-directional audio support. This
device is also suitable for computers equipped with a serial mouse or touch screen.

This manual will tell you all about your new VTO2/VRO2 V6.00 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:

K234-9W: KVM-Extender for VGA, PS2-Keyboard/Mouse + Serial/Audio

K235-9W: KVM-Extender for VGA, PS2-Keyboard/Mouse

K236-9W: Extender for VGA only

1

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Copyrights and Trademarks

©2005. All rights reserved. This information may not be reproduced in any manner without
the prior written consent of the manufacturer.

Information in this document is subject to change without notice and the manufacturer shall
not be liable for any direct, indirect, special, incidental or consequential damages in
connection with the use of this material.

All trademark and trade names mentioned in this document are acknowledged to be the
property of their respective owners.

Disclaimer

While every precaution has been taken in the preparation of this manual, the manufacturer
assumes no responsibility for errors or omissions. Neither does the manufacturer assume any
liability for damages resulting from the use of the information contained herein. The
manufacturer reserves the right to change the specifications, functions, or circuitry of the
product without notice.

The manufacturer cannot accept liability for damage due to misuse of the product or due to
any other circumstances outside the manufacturer’s control (whether environmental or
installation related). The manufacturer shall not be responsible for any loss, damage, or injury
arising directly, indirectly, or consequently from the use of this product.

Cautions and Notes

The following symbols are used in this guide:

CAUTION. This indicates an important operating instruction
that should be followed to avoid any potential damage to
hardware or property, loss of data, or personal injury.

NOTE. This indicates important information to help you make the best use
of this product.

2

EU DECLARATION OF CONFORMITY

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:

K234-9W
K235-9W
K236-9W

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 11th, 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.

3

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Safety Precautions and Installation Guidelines

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

• Only use in dry, indoor environments.

• 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.

4

• 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

QUICK SETUP

Contents

1. Quick Setup 6

2. Overview 7

2.1 Introduction 7

2.2 Glossary 7

2.3 Features 9

2.4 Product Range 10

2.5 Compatibility 11

2.6 How to Use This Guide 12

3. Installation 13

3.1 Package Contents 13

3.2 Interconnection Cable Requirements 14

3.3 System Setup 15

3.4 Diagnostic and Adjustments 21

4. Adjustments 25

4.1 Jumper Location in the Local Unit 26

4.2 Jumper Location in the Remote Unit 27

4.3 Customization 27

5. Monitor Setup 30

5.1 TFT Monitors 32

5.2 Hints for Pixel Clock and Pixel Phase 33

5.3 Manual Adjustment of Video Signals 34

6. Troubleshooting 35

Appendix A: Example Applications 36

Appendix B: 19” Rack Mount Options 38

Appendix C: Audio/Serial Upgrade 40

Appendix D: Technical Support 42

Appendix E: Specifications 43

Appendix I: Connectors 45

5

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Install System

YES

NO

NO

YES

1. Quick Setup

This section briefly describes how to install your KVM extender system and optimise the
video signals. Unless you are an experienced user, we recommend that you follow the full
procedures described in the rest of this manual.

1. Connect Remote unit to KVM.

2. Connect Local unit to CPU or switch.

3. Connect Local and Remote units with fibre interconnection cable.

4. Power up the system.

Is the dot on the

7 segment display

illuminated?

YES

Wait until the dot lapses

Does the 7-

segment display show

’C’?

NO

The fibres for data transmission
(1 + 2) are swapped – switch the
fibres at one device (see page 18).

Does the 7-

segment display show

’0’?

Solve the problem as described in

the Troubleshooting section

(page 35).

6

Done

OVERVIEW

2. Overview

2.1 Introduction

With a fibre KVM Extender you can dramatically increase the maximum distance between a
CPU and its Console – the keyboard/mouse and monitor (+ serial/audio devices). In addition,
they are essential for installations in hazardous EMI environments. Normal
keyboard/mouse/monitor extender cables (and Extenders using regular cables) have lower
extension capabilities and EMI interference may further reduce the maximum distance and
reliability. The VTO2/VRO2 fibre optical KVM Extender System has none of these
limitations. Locate your CPU in a secure cabinet or data centre and access it remotely from a
distance of up to 1000m.

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. 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 the units to
communicate stereo audio and serial port signals.

2.2 Glossary

The following terms are used in this guide:

Multimode

PSU

KVM

Console

Dual Access

RGB

RGBS

VGA
(also called
RGBHV)

Any multimode 3/5-fibre cable 50/125µ or 62.5/125µ (depending on
device type)

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

Keyboard, Video (monitor) and Mouse.

A keyboard, monitor, and mouse, plus optional serial/audio devices.

A system allowing connection of Local and Remote user consoles.

Video signal, consisting of R (red) G (green) and B (blue) signals. The
signals have a level of 0.7Vpp. The Green-Signal also carries the
(composite) synchronisation signals.

Video signal, consisting of R (red) G (green) and B (blue) signals and
the additional (composite) SYNC signal. All signals have 0.7Vpp.

Video signal, consisting of R (red) G (green) and B (blue) signals and
the additional horizontal/vertical synchronisation signals. The colour
signals have a level of 0.7Vpp, the synchronisation TTL (5Volts).

7

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

CPU with VGA

Optional Serial

VTO2/VRO2 KVM-Extender System

Local Access

device + Audio

Graphic Card

VGA-only transmission

VTO2/VRO2 – KVM Extender System (Example)

8

Remote Console

OVERVIEW

2.3 Features

The VTO2/VRO2 V6.00 KVM-Extenders offer the following features:

• Support for VGA Graphic Cards (all models).

• Support for PS2-Keyboard and PS2-Mouse. Intelligent PS/2 keyboard and mouse

emulation ensures PCs do not lock up and allows peripherals to be hot-plugged (K235­9W and K234-9W only).

• Transparent serial port (on K234-9W only) 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 digitised) support (K234-9W only) enables high-

quality, low-noise, audio extension.

• Maximum Resolution:

VGA: 1280x1024@75Hz.

• Status indicator LED on each device.

• 7-Segment diagnostic display on Remote Unit aids troubleshooting.

• Small footprint chassis.

• Rack mount options available.

• CPU KVM-cable (1.8m) + universal PSU included.

9

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

2.4 Product Range

There are three products in the range and various mounting options:

VTO2/VRO2 - Extender

K234-9W KVM-Extender for VGA, PS2-Keyboard/Mouse

Serial/Audio

K235-9W KVM-Extender for VGA, PS2-Keyboard/Mouse

K236-9W Extender for VGA only

Upgrade Kits

437-1G 19”/1U Rack Mount Kit (RMK) to mount up to 3 devices

in a 1U rack space

285-2K Mounting brackets to mount by screws

286-2K Mounting brackets to mount by snap-on

235-3V Optical fibre pigtail (3 pieces), each 1m (3 ft) including

ST/ST coupler (3 pieces) device K236-9W only

235-5V Optical fibre pigtail (5 pieces), each 1m (3 ft) including

ST/ST coupler (5 pieces) devices K234-9W or K235-9W

10

OVERVIEW

2.5 Compatibility

Interface Compatibility

• VGA (also called RGBHV): Video signal, consisting of R (red) G (green) and B (blue)

signals and the additional horizontal/vertical synchronisation signals. The colour signals
have a level of 0.7Vpp, the synchronisation TTL (5Volts).

• RGB: Video signal, consisting of R (red) G (green) and B (blue) signals. The signals

have a level of 0.7Vpp. The Green-Signal also carries the (composite) synchronisation
signals.

• 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 pre-amplification).

• 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.

11

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

2.6 How to Use This Guide

This guide describes the installation and configuration of the VTO2/VRO2 V6.00 KVM­Extender 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 a VTO2/VRO2 V6.00 KVM-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 13.

Graphic Source (RGB or VGA)

The device can transmit RGB signals as well as VGA. In addition, it is able to convert from
VGA to RGB as well as from RGB to VGA.
Factory setting: VGA (see page 27).

Fibre Cable (50µ or 62,5µ)

The VTO2/VRO2 V6.00 KVM-Extender can be used with 50µ or 62,5µ fibre cable. The
transmission power must be adjusted to the type of cable. You need not to modify the setting,
if at least one of the following two circumstances become true: 1st the cable type is 50µ, 2nd
the cable length exceeds 100m. (see also page 27)

Automatic Gain Control (AGC)

In some applications (e.g. RGB Signals) it may be necessary to switch off the Automatic Gain
Control.
Factory setting: Automatic Gain Control ON (see page 27)

Compatibility

The devices in version 6.00 are NOT compatible with previous versions.

12

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:

• VTO2/VRO2 V6.00 KVM-Extender Local Unit

• VTO2/VRO2 V6.00 KVM-Extender Remote Unit

• VGA CPU cable, ZIP type 1,8m (HD15 male / HD15 female, 2 x PS2 male / PS2 male)

Models K234-9W and K235-9W

• VGA CPU-cable 1,8m (HD15 male / HD15 female)

Model K236-9W only

• Audio CPU-cable 1,8m (3,5mm Stereo Jack / 3,5mm Stereo Jack)

Model K234-9W only

• Serial CPU-cable 1,8m (DB9 female / DB9 male)

Model K234-9W only

• 2 x 6V DC universal PSU

• 2 x power cord

• Manual (Quick Setup)

•

If anything is missing, please contact Technical Support (see Appendix D – Technical
Support).

13

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

3.2 Interconnection Cable Requirements

CPU/Local Unit Connections

To connect the Local unit to your graphic source you will need:

• VGA (K236-9W): Connect the supplied VGA CPU-cable 1,8m (HD15 male / HD15

female) to the CPU (KVM - Switch, etc.). Please ensure that the connection is tension­free.

• VGA, Keyboard, Mouse (K234-9W + K235-9W): Connect the supplied VGA CPU

cable, ZIP type 1,8m (HD15 male / HD15 female, 2x PS2 male / PS2 male) to the CPU
(or KVM Switch). Please ensure that the connection is tension-free.

Power Supplies

Connect the supplied 6V/DC power supplies to the Plug terminals on the rear of both the
Local and Remote units.

Local Unit/Remote Unit Connection

To connect the Local and Remote units you will need:

• Multimode Fibre Cable: 3 Fibres 50µm or 62.5µm – ST-plugs. (K236-9W)

Multimode Fibre Cable: 5 Fibres 50µm or 62.5µm – ST-plugs. (K234-9W+K235-9W)

If you want to use the devices with fibres 62,5µ AND the

cable length falls short of 100m, it might be necessary,
to reduce the optical budget. For this purpose, optical fibre
pigtails are available. (see also page 10).

14

INSTALLATION

3.3 System Setup

To install your VTO2/VRO2 V6.00 KVM-Extender system:

1. Switch off all devices.

2. Connect your keyboard, monitor, mouse, audio device and serial device to the Remote

unit (depending on type of device). Ensure that you attach the keyboard and mouse
connectors to the correct ports. The keyboard connector is purple; the mouse connector
is green.

3. Connect the CPU to the Local Unit, using the supplied CPU cable. Ensure that you

attach the keyboard and mouse connectors to the correct ports. The keyboard connector
is purple; the mouse connector is green.

4. Connect the 6V power supplies to the Local and Remote units.

Only use the power supply originally supplied with this

equipment or a manufacturer-approved replacement.

5. 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.

6. Connect the Interconnection cable (Multimode Fibre Cable) from the Remote unit to the

Local unit. Ensure that you attach the fibre connectors to the correct ports. R goes to R,
G to G, B to B, 1 to 1 and 2 to 2.

7. Power up the system.

15

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Connect to CPU

Mouse socket

local Mouse

Connect to CPU

Connect to

Connect to CPU

Audio Connectors PS/2 Connectors

CPU Line In

Connect to CPU

CPU Line Out

Connect to CPU
V24 socket

Connect to

local Monitor

VGA-Monitor Connectors

Connect to 6V
Power supply

Connect to

local Keyboard

Keyboard Connectors

Connect to CPU

Keyboard socket

VTO2/VRO2 V6.00 KVM-Extender Type K234-9W Local Unit

7-Segment display for
Troubleshooting

Audio Connectors

To the powered

speakers

To the
serial device

To the

microphone

VGA socket

Connect to 6V
Power supply

VTO2/VRO2 V6.00 KVM-Extender Type K234-9W Remote Unit

16

Mouse Monitor

Remote Console Connectors

Keyboard

INSTALLATION

Connect to CPU

Mouse s

ocket

local Mouse

VTO2/VRO2 V6.00 KVM-Extender Type K235-9W Local Unit

PS/2 Connectors

Connect to

Connect to 6V
Power supply

Connect to CPU

Connect to local

Keyboard

PS/2 Connectors

Connect to CPU

Keyboard socket

Connect to

local Monitor

VGA Connectors

VGA- socket

7-Segment display for
Troubleshooting

Connect to 6V
Power supply

Connect to remote

Mouse

VTO2/VRO2 V6.00 KVM-Extender Type K235-9W Remote Unit

Connect to

remote Keyboard

Console Connectors

17

Connect to

remote Monitor

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Connectors for

color signals

Fibre connectors (ST)

Connectors for

Digital signals

VTO2/VRO2 V6.00 KVM-Extender Type K234-9W + K235-9W Local Unit

Potentiometer for

manual gain control

Connectors for

color signals

Fibre connectors (ST)

Connectors for

Digital signals

VTO2/VRO2 V6.00 KVM-Extender Type K234-9W + K235-9W Remote Unit

18

Potentiometer for

Contrast

Potentiometer for

Brightness

INSTALLATION

Connect to CPU

Connect to 6V

Power supply

Connect to local

Monitor

VGA Monitor Connectors

VTO2/VRO2 V6.00 KVM-Extender Type K236-9W Local Unit

7-Segment display for
Troubleshooting

VGA socket

Connect to 6V

Power supply

Connect to

remote Monitor

VTO2/VRO2 V6.00 KVM-Extender Type K236-9W Remote Unit

19

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

VTO2/VRO2 V6.00 KVM-Extender Type K236-9W Local Unit

Fibre connectors (ST)

Connectors for color signals

Potentiometer for

manual gain control

Fibre connectors (ST)

Connectors for color signals

VTO2/VRO2 V6.00 KVM-Extender Type K236-9W Remote Unit

20

Potentiometer for

Contrast

Potentiometer for

Brightness

INSTALLATION

3.4 Diagnostic and Adjustments

Each VTO2/VRO2 V6.00 KVM-Extender is fitted with an indicator LED Device Ready and a
7-Segment display for enhanced troubleshooting: The Device Ready LEDs are next to the
power sockets. The 7-Segment display is next to the power socket of the remote unit.

On each VTO2/VRO2 V6.00 KVM-Extender you can adjust Brightness and Contrast
manually. In addition, each colour can be adjusted manually (only with automatic gain
control – AGC = OFF). The potentiometers to adjust Brightness and Contrast are to the right
of the fibre connectors on the Remote unit. The 7- Segment display is next to the Power
socket of the Remote unit.

The location of the LEDs is shown below:

Diagnostic LED

Device Ready

Diagnostic LED

Device Ready

Diagnostic LEDs on VTO2/VRO2 Extender

LED Appearance Diagnostics

Device Ready
(Red LED)

Off

On

Device not ready

Device ready

21

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

The location of the 7- Segment display is shown below:

7-Segment display for troubleshooting

7-Segment display on VTO2/VRO2 Extender

7-Segment

display

Diagnostics Possible cause of fault

Only in mode “AGC-ON”
NO error

Only in mode “AGC-ON”
illuminated

Blank-pulse is missing Problem with the GREEN fibre

Data interface (receiving)
deranged

Contrast is adjusted too high The gain of the contrast potentiometer is

HSYNC signal is missing Problem with the GREEN fibre

VSYNC signal is missing Problem with the BLUE fibre

NO error detectable

NO error detectable:

Processor adjusts color amplifying (AGC)

Problem with the 1-Fibre
Problem with the Local Unit
1-Fibre and 2-Fibre swapped

adjusted too high. Automatic Gain Control
(AGC) is no longer possible. Please re­adjust to lower gain.

Problem with the CPU cables
Wrong jumper setting in the Local unit

Problem with the CPU cables

Wrong jumper setting in the local unit

22

INSTALLATION

The location of potentiometers for brightness/contrast control is shown below:

Potentiometer for

Contrast

Brightness/Contrast controls on VTO2/VRO2 – Extender

On each VTO2/VRO2 V6.00 KVM-Extender you can adjust Brightness and Contrast
manually. You’ll find the potentiometers to the right hand of the fibre connectors on the
Remote unit. Please use these potentiometers for adjustment of all colours simultaneously.

If the gain of the contrast potentiometer is adjusted too high,
Automatic Gain Control (AGC) is no longer possible. Please
readjust to lower gain until the 'F' on the 7- Segment display
lapses.

Potentiometer for

Brightness

The location of potentiometers for manual gain control is shown below:

Potentiometer for

manual gain control

Potentiometer for manual gain control on VTO2/VRO2 – Extender

23

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

On the front panel of the Remote unit there are potentiometers to adjust the gain of each
colour signal. In the mode 'With AGC', these potentiometers have no function. In the mode
'Without AGC' you can adjust the factory setting for the gain of each single colour. This may
be necessary if there is a different attenuation between the three lines. This could result in
chromatic aberrations on screen.

Use the AGC Mode 'Automatic Gain Control = OFF' only if
there are problems that you can’t solve with 'AGC = ON'.

In mode 'AGC = ON' the gain of each colour signal is fixed, since all have the same white
level (0.7Vpp). The individual color potentiometers do not function. Use the brightness and
contrast controls to achieve the best screen display.

Use mode 'AGC = OFF' if you see chromatic aberrations on the screen. Each colour has to be
adjusted by using the appropriate potentiometer. You can adjust by visual comparison or use
an oscilloscope to get the best results. Brightness and contrast control allow further control of
the screen display. Please do not select this mode unless you have problems with your display
(see also above).

24

ADJUSTMENTS

UNC type screws at the monitor connectors

UNC type screws at the monitor connectors

4. Adjustments

For most applications, you shouldn't need not to make any adjustments to set up your
VTO2/VRO2 V6.00 KVM-Extender.

For some applications, you may need to open the Local Unit and/or the Remote Unit.
Unscrew the Philips-type screws at both sides of the device. Unscrew the UNC type screws at
both sides of the monitor connectors. Carefully displace the lower and upper shells of the
case.

Model K234-9W carries a Serial/Audio daughter board
connected through a flat cable to the main board. Please
remove the upper shell carefully to avoid damaging the flat

cable.

Philips type
screws

Philips type
screws

Philips type
screws

25

Philips type
screws

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

4.1 Jumper Location in the Local Unit

After unscrewing and opening the upper shell, please place the device in this orientation: with
the fibre connectors to the left and the electrical connectors to the right.

The main PCB then will look like this:

JP5

JP11 JP10, JP6 JP2, JP3, JP4

Use the diagram to locate jumpers JP2, JP3, JP4, JP5, JP6, JP10, and JP11.

26

ADJUSTMENTS

4.2 Jumper Location in the Remote Unit

After unscrewing and opening the upper shell, please place the device in this orientation: with
the fibre connectors to the left and the electrical connectors to the right.

The main PCB then will look like this:

JP20

JP1, JP2, JP3 JP11, JP12

JP9

Use the diagram to locate jumpers JP1, JP2, JP3, JP9, JP11, JP12 and JP20.Customization

You can make the following application-specific adjustments:

27

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Changing the graphic source (RGB or VGA)

This device can transfer RGB as well as VGA signals. In addition, it is able to do a signal
conversation while transferring the signals from RGB to VGA, or from VGA to RGB.
Factory setting: VGA in – VGA out

= open = shorted

Local Unit
Jumpers:

Pins 13&14 (HS,
VS) from CPU connected connected open open

Remote Unit
Jumpers

Pins 13&14 (HS,
VS) to Monitor

Use Remote Unit’s
controls?

JP2

JP6

JP10

JP11

JP1, 2, 3

JP9

JP12

VGA Source

VGA Monitor

connected open connected open

VGA Source

RGB Monitor

RGB Source

VGA Monitor

RGB Source

RGB Monitor

28

Contrast

Brightness

if necessary if necessary if necessary if necessary

no if necessary no if necessary

ADJUSTMENTS

Using 62.5µ fibre cable

The VTO2/VRO2 V6.00 KVM-Extender can be used with 50µ or 62,5µ fibre cable. The
transmission power must be adjusted to the type of cable. You need not to modify the setting,
if at least one of the following two circumstances become true: 1st the cable type is 50µ, 2nd
the cable length exceeds 100m.

If you use a 62.5µ fibre AND the cable length falls short of 100m, please connect the devices
without modifications and evaluate the function! In many cases, the devices will work also
with shorter cables because of other attenuating components e.g. patch panels, …

If you recognize an instable screen picture, you need to attenuate the optical budget. To do
this, so called optical fibre pigtails are insertet at the local unit.These fibres in combination
with the coupling connectors raise the opical loss to a value, where a correct function is
assured. These optical fibre pigtails you can get from your dealer for free (see also Product
Range on page 10

Switch OFF the Automatic Gain Control (AGC)

With AGC = ON, the gain of each color signal is fixed so that all have the same white level
(0,7Vpp). The potentiometers are without function. Use the brightness and contrast control to
adjust the screen display.

With AGC = OFF: each color has to be adjusted by using the appropriate potentiometer. You
can adjust by visual comparison or use an oscilloscope to get best results. Brightness and
contrast control allow private adaptation to desired screen display. Please do not select this
mode unless you have problems, such as chromatic aberration, with your display. Factory
setting: Automatic Gain Control ON

AGC

ON (Factory setting)

OFF

JP3 in Local Unit JP20 in Remote Unit

.

29

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

5. Monitor Setup

This schematic diagram shows the principles of data transmission through the extender
system:

Normally you should not need to make any modifications. However, under some
circumstances, you may want to customize the extenders:

Changing the Graphics

The factory setting for our devices is to transmit VGA signals to a VGA screen (VGA
in/VGA out). By changing the appropriate jumper settings the units can also be used for:

• VGA in/RGB out: RGB monitor displaying output from a VGA graphics card

• RGB in/RGB out: RGB monitor displaying output from an RGB graphics card

• RGB in/VGA out: VGA monitor displaying output from an RGB graphics card

30

MONITOR SETUP

VGA in/RGB out

This application uses the extender as a VGA/RGB Converter. The attached monitor must be
able to display an RGB signal with the provided frequencies.

You can only use an RGB Monitor with a VGA-Signal if the
Monitor is able to process the SYNC frequencies (for
example, a monitor with HSYNC = 40-90 kHz may not work
from VGA with 640x480 = 31,5 kHz).

RGB in/RGB out

The attached monitor must be able to display an RGB signal with the provided frequencies. In
this mode, it might be necessary to switch off the automatic gain control (AGC) if your
monitor does not blank the ‘white pulse’.

RGB in/VGA out – SYNC Stripper

In this mode, the remote unit works as an additional SYNC stripper – the SYNC signals are
stripped off from green, separated and presented as TTL-signals.

Depending on the technical design of the units, you receive
at HSYNC-output a CSYNC signal (HSYNC and VSYNC mixed)
and at the VSYNC-output a VSYNC-signal. Some types of

VGA-monitors show distorted pictures, while receiving both
CSYNC on HS and an additional VSYNC on VSYNC.

If you have a monitor that shows distorted pictures in this configuration, you can suppress the
VSYNC -signal by removing jumper JP9 on the Remote unit (VRO). All monitors that show
distorted pictures, because of this double signal, work well with a pure composite-signal
(VSYNC disconnected).

A VGA-monitor only works as an RGB graphic adapter if the
monitor is able to process the synchronization frequency of
the video source (e.g. a multi sync-monitor with horizontal

bandwidth of 30-90 kHz may not work with a WF470 graphic
adapter with 15.625 kHz).

It is not possible to generate the special phase relations (of the VGA-standard) that are
required by some types of dual scan monitors (LCD-panels, for example). In this mode, you
may have to switch off AGC if your monitor does not blank out the WRI (White Reference
Impulse) and shows it on screen.

RGB signals have a lot of different types of signal forms and combinations. For further
information please contact our Technical Support. We will help you to find a solution for
your application.

31

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

5.1 TFT Monitors

Use this procedure to correct for discrepancies in the video signal due to analog/digital video
conversion by a TFT monitor. You do not need to follow this procedure if you have a CRT
monitor connected because the video format is not converted.

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.
For different screen resolutions and/or refresh rates it might be necessary to follow this
procedure several times.

2. 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.

3. If the picture quality is not acceptable after the automatic adjustment, you might get

enhanced results using an applicable test pattern display: go to Step 4. If the vertical
stripes are sharp and without jitter or smearing, the adjustment has been successful. The
setup is completed.

4. Download the test pattern from: http://www.ihse.de/images/burst.htm and store this

file in a directory of your choice.

5. Select this graphic for the desktop background:

Start / Settings / Control Panel / Display / Backgrounds

6. Select it as a tiled display. Your desktop should now show fine, black and white, vertical

stripes over the total background.

7. 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.

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

successful. Go to Step 10.

9. 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.

10. Select a graphic of your choice for the desktop background:

Start / Settings / Control Panel / Display / Backgrounds

The Setup is complete.

32

MONITOR SETUP

5.2 Hints for Pixel Clock and Pixel Phase

Why do you need to adjust Pixel clock and Pixel phase (always in this order) when you are
using a TFT screen?

This can be explained by means of a 'virtual' reduced system, which has only a few pixels and
lines displaying a burst pattern (see above). The system would look like:

To display an analog picture correctly, the TFT must know Pixel Clock and Pixel Phase. To
define these, it needs to calculate:

The exact center of each Pixel...

... the black 'shoulder' (the beginning of the
picture), the number of pixels per line and
the Pixel Phase (Middle of each Pixel)

On the Oscilloscope

Wrong Pixel Clock

Wrong Pixel Phase

33

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

5.3 Manual Adjustment of Video Signals

CAUTION: This procedure applies to Remote Unit only with
AGC=OFF! – do not attempt any adjustment of the Local Unit.

The level of the three video signals may be simultaneously adjusted with the Brightness
control. If you open too far to “brighten”, the video signal increases on oscilloscope-CRT,
and a part of the SYNC signals appears in the video signal, as shown in (a).

(a) Signal too light

(b) Signal too dark

If you close too far to “dark”, the video signal decreases on the oscilloscope-CRT and a part
of the signal is cut: see (b).

Adjust the brightness control so that it falls just before the signal: see (c).

(c) Signal OK

Adjustment of amplitude

The amplitude of the colour channels depends on:

• The attenuation of the optical fibre

• The attenuation of the FO-connectors

• The position (gain) of the color control trimmer.

You may correct up to a 20% difference in signal amplitude in the three colour channels by
setting the gain with the colour control trimmer. Adjust all channels (R, G, B) to the same
value (amplitude app. 0.7Vpp...0.8Vpp = white). Since the attenuation exceeds, you may
adjust the amplitude for all channels together, using the Contrast control (see above)

A difference greater than 20% indicates either a broken fibre or FO-connector.

34

6. Troubleshooting

There isn’t a picture

Check the power supply connection at the Local unit. Is the Device Ready (Red
LED) at the Local and Remote unit illuminated? If not, the internal power-supply
may be damaged or there may be an internal error (see page 21).

Check that the Interconnection cable is connected at the Local Unit and the Remote
Unit. Check the 7-segment display for error codes (see page 22).

There may be one or more broken fibres. Do NOT look into a fibre’s end directly
while it is connected to a Local or Remote unit! Check for broken fibres using a
flashlight.

Are the cables of the recommended fibre type? If you used your own fibre optical
cable (not supplied by us), please ensure that you have used 50µ or 62.5µ fibres.
Other fibre-types and poly-fibres are not supported. Be sure, to have the Cable type
jumper (see page 29) set accordingly.

Either HSYNC or VSYNC is missing; because of this, the power save function is
enabled (EPA or TCO): Are the fibres for R, G, B swapped?

Running picture

The Monitor does not synchronize: are the fibres for R, G, B swapped?

TROUBLESHOOTING

instable screen picture

Do you use 62.5µ fibres with a length below of 100m (app. 330 ft)? Please
attenuate the optical budget by inserting optical fibre pigtails (see also Using 62.5µ
fibre cable on page 29

Keyboard, as well as Mouse does not work

You have swapped the 1- and 2-fibre.

The fibres 1 and/or 2 are not connected to the Local or Remote unit.

There may be one or more broken fibres. Do NOT look into a fibre’s end directly
while it is connected to a Local or Remote unit! Check for broken fibres using a
flashlight.

Are the cables of the recommended fibre type? If you used your own fibre optical
cable (not supplied by us), please ensure that you have used 50µ or 62.5µ fibres.
Other fibre-types and poly-fibres are not supported. Be sure, to have the Cable type
jumper (see page 29) set accordingly.

35

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Appendix A: Example Applications

This section illustrates some specific applications using Extender units:

• VTO2/VRO2 V6.00 KVM-Extender with speaker and microphone.

Audio/serial extension

Remote console

VTO2/VRO2 V6.00 KVM-Extender with speaker and microphone

36

APPENDIX A: EXAMPLE APPLICATIONS

• 4 CPU’s – local outputs managed through a KVM- Switch and a single console. Remote

Consoles up to 1000m away

VTO2/VRO2 V6.00 KVM-Extender – local Consoles through a KVM- Switch

37

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Appendix B: 19” Rack Mount Options

The VTO2/VRO2 V6.00 KVM- Extender units can be mounted in a 19” rack using the DDXi
mounting kit.

This contains the following parts:

Narrow strip

Two small blanking plates

Base plate

M3x5 Screws (14)

Wide blanking plate

19” 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

VTO2/VRO2 V6.00 KVM extender unit.

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

Only use the supplied short screws; longer screws may
cause damage to the PCBs.

3. Close the remaining gaps with blanking plates.

38

APPENDIX B: 19” RACK MOUNT OPTIONS

The kit allows you to mount various combinations of regular and double width housings. The
VTO2/VRO2 V6.00 KVM-Extender comes in a single wide housing, so you can use one of
the mounting options 1, 2 or 3:

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)

39

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Appendix C: 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 (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.

40

APPENDIX C: AUDIO/SERIAL UPGRADE

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:

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

In’ on the extender's Local Unit.

2. Connect a set of powered speakers to ‘Line Out’ on the Extender's Remote Unit.

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 labelled ‘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.

41

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Appendix D: Technical Support

If you determine that your VTO2/VRO2 V6.00 KVM Extender is malfunctioning, do not
attempt to alter or repair it. It contains no user-serviceable parts. Contact Technical Support.

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 VTO2/VRO2 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 VTO2/VRO2 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 the manufacturer for repair or return, contact us to get a Return
Authorization (RA) number.

42

APPENDIX E: SPECIFICATIONS

Appendix E: Specifications

Power Requirements

Voltage

Power required

Interface

(Depending on type of device)

Video Source/Monitor

Keyboard

Mouse

Serial

Audio

Speed

Data format

Handshake

Description

Transmission
Method

Signal Levels

Connectors

Microphone
Support

PSU: 90..240VAC-0.5A-47..63Hz/6VDC-2000 mA

Local Unit: approx. 8W

Remote Unit without keyboard: approx. 8W

Remote Unit with keyboard: approx. 9.5W

VGA up to 1280x1024@75Hz

PS2

PS2 2-/3-button and wheel mice

Up to 19200BAUD

Format Independent, transparent

RTS, CTS, DTR, DSR are sent across link

Bi-directional stereo audio link

Digitised virtually CD quality audio (16-bit, 38.4KHz)

Line-Level (5 Volts Pk-Pk maximum) @ 47kOhm

Local Unit: 2 x 3.5mm stereo jack socket (Line In &
Line Out)
2 x 3.5mm stereo jack socket (Line/Mic In& Line Out)

A microphone may be connected to the Remote Unit.
Pull-up resistor provides bias for condenser
microphone.
Option to set microphone amplification to +17dB.

Maximum Length of Interconnection Cable

50µm Multimode

62.5µm Multimode

3250ft (1000m)

3250ft (1000m)

43

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

Type of Interconnection Cable

K236-9W

K234-9W / K235-9W

Optical Elements

Center Wavelength

Optical budget total (typical)

Size and Shipping Weight

VTO2/VRO2 – V 6.00

Shipping box

Environmental

Operating Temperature

Storage Temperature

Relative Humidity

3 Fibres Multimode, e.g. I/AD(ZN)H 4G50 (In-house
OR Outdoor Breakout cable)

5 Fibres Multimode, e.g. A/DQ(ZN)B2Y 4G62,5
(Outdoor Breakout cable with protection against
rodent)

850nm

-5 dBm

Remote/Local Unit: 7.1”x5.2”x1.7” (180x133x44mm)

Weight: 2.6lb (1.2kg) each

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

Weight: 9.5lb (4.3kg)

41 to 113°F (5 to 45 °C)

-13 to 140°F (-25 to 60 °C)

max. 80% non-condensing

44

APPENDIX F: CONNECTORS

Appendix F: Connectors

VTO2/VRO2 V6.00 KVM-Extender Connector Pin outs

VGA female (Signal Output) VGA male (Signal Input)

Pin Signal Pin Signal Pin Signal

1 RED- 6 RED GND 11

2 GREEN 7 GREEN GND 12

3 BLUE 8 BLUE GND 13 HSYNC

4 9 14 VSYNC

5

10 SYNC GND

15

Keyboard/Mouse female (Signal Input/Output)

Pin Keyboard Pin Mouse

1 KBD-DATA- 1 MOUSE-DATA-

2 2

3 KBD-GND 3 MOUSE-GND

4 VCC (+5V) 4 VCC (+5V)

5 KBD-CLCK

6

5

MOUSE-CLCK

6

45

VTO2/VRO2 V.6.00 –5 STRAND KVM-EXTENDER

RS232 (only device K234-9W with serial/Audio Upgrade)

9 pin DSUB female (Local Unit) 9 pin DSUB male (Remote Unit)

Pin Signal

1 Not connected

2 RxD

3 TxD

4 DTR

5 GND

6 DSR

7 RTS

8 CTS

9 Not connected

Power

46

1 2

3 4

Pin Signal

1 GND

2 Earth

3 n.c.

4 +6VDC

Housing Shield

NOTES

NOTES