IHSE USA 234 Series VTO2/VRO2 KVM-Extender - Manual (Page 7)

OVERVIEW
7
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 Any multimode 3/5-fibre cable 50/125µ or 62.5/125µ (depending on
device type)
PSU The desktop power supply connected to the Local/Remote unit.
KVM Keyboard, Video (monitor) 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.
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.
RGBS Video signal, consisting of R (red) G (green) and B (blue) signals and
the additional (composite) SYNC signal. All signals have 0.7Vpp.
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).