LaserBit LB Series User manual

1500&2500&5000
Users’ Manual 4.3

LaserBit LB Series 4.3 page
2
Safety of the Laserbit product
The Laserbit is classified as Class 3B laser product.
The Laserbit System has been tested and found to comply with the
EN 60825-1:1994+A11:96+A2:2001 (laser safety),
EN 60950-1:2001 (electrical safety),
EN 55022:1998+A1:200+A2:2003 Class 3B (emission)
and EN 55024:1998+A1:2001+A2:2003 and EN 61000-6-2:2001 (immunity)
European standards.
The laser radiation is emitted from the transmitter optics through the glass window in
the front side of the laser head under less than 10 mrad divergences. No other
aperture through which laser radiation can occur present in the laser head.
Warning!
Invisible laser radiation! Looking directly into the laser beam can
cause permanent damage to the eye! Safe looking distance varies
with beam power and divergence. See attached data sheet for exact
figures.
The Laserbit product should be installed in such a way that nobody can access the
optical window or can get in the way of the laser beam accidentally. For detailed
instructions please read chapter 5.3.5 Eye Safety on page 20.
The Laserbit product provided with all the necessary labels specified by the
standards. Moreover informative labels should be put on clearly visible places where
the laser beam can be accessed. The locations of the warning labels are shown on
page 20 of the manual (Chapter 5.3.5/Eye Safety).
The Outdoor Interconnection Unit is assembled with a certified power cord, which
must be connected to the mains through a power outlet to make the disconnection
possible at any time. Any modification to the above installation is prohibited. If
modifications are required by the local standard, please contact the manufacturer.
To ensure the compliance with the EN 60950 safety requirements, the system
should be installed only by the manufacturer or its certified partners.
Warning!
Operating the Laserbit product other than described in this manual
can cause undesired laser radiation and can be dangerous to he
eye or electrical shock!

LaserBit LB Series 4.3 page
3
Elektrische Sicherheit des Laserbit Produkts
Das Laserbit ist eine Klasse 3B Lasereinrichtung.
Das Laserbit Produkt wurde geprüft und entspricht den Anforderungen der
Europäischen Standards EN 60825-1:1994+A11:96+A2:2001 (Lasereinrichtungen),
EN 60950-1:2001 (Elektrische Sicherheit),
EN 55022:1998+A1:200+A2:2003 Klasse 3B (EMV, Störaussendung) und
EN 55024:1998+A1:2001+A2:2003 sowie EN 61000-6-2:2001 (EMV, Störfestigkeit)
Der Laserstrahl wird von der Sendeoptik durch die Glasscheibe an der Frontseite
des Laserkopf mit einer Divergenz von weniger als 10mrad abgestahlt. Es sind keine
weiteren Blenden vorhanden durch die Laserstrahlen auftreten können.
Warnung!
Unsichtbare Laserstrahlen! Nicht direkt in den Lasertrahl schauen,
da dies die Augen permanent schädigen kann. Der
Sicherheitsabstand variiert mit der Laserleistung und Divergenz
des Laserstrahl. Details hierzu sind im Datenblatt nachzulesen.
Das Laserbit Produkt muß so installiert werden, daß niemand Zutritt zu der Optik
des Laserkopf hat oder zufällig in den Bereich des Laserstrahl kommen kann.
Kapitel 5.3.5 auf Seite 20 des Handbuchs enthält ausführliche Anweisungen zum
Schutz der Augen.
Das Laserbit Produkt ist mit allen notwendigen Warnhinweisen versehen die durch
die Standards vorgebenen werden. Weitergehende Hinweise sollten an gut
sichtbaren Stellen angebracht werden wo man sich dem Laserkopf gefahrlos nähern
kann. Die Positionen der Warnhinweise sind auf Seite 20 des Handbuchs dargestellt
(Kapitel 5.3.5, Schutz der Augen)
Die „Outdoor Interconnection Unit“, die mit einem zertifzierten Netzkabel ausgeliefert
wird, muß mit der Stromversorgung verbunden werden, indem der Netzstecker in
eine geeignete Netzsteckdose gesteckt wird, womit die Lasereinrichtung auch
jederzeit wieder vom Netz getrennt werden kann. Jegliche Modifikationen an der
Installation sind verboten.
Falls aufgrund nationaler Vorschriften denoch Änderungen an der Installation
vorgenommen werden müssen, ist vorher der Hersteller zu befragen.
Um die Konformität bezüglich der Elektrischen Sicherheit nach EN60950
sicherzustellen, sollte das System nur vom Hersteller oder seinen zertifizierten
Partnern installiert werden.
Warnung !
Die Inbetriebnahme oder der Betrieb des Laserbit Produkts,
abweichend von den Vorgaben dieses Handbuchs, kann
unerwünschte Laserstrahlung verursachen und gefährlich für die
Augen werden oder einen elektrischen Schock verursachen.

LaserBit LB Series 4.3 page
4
Sécurité de produit Laserbit
Le produit Laserbit est classifié dans la catégorie laser 3B.
Le système de Laserbit a été testé et correspond aux normes européennes:
EN 60825-1:1994+A11:96+A2:2001 (sécurité du laser),
EN 60950-1:2001 (sécurité éléctrique),
EN 55022:1998+A1:200+A2:2003 Classe 3B (émission),
EN 55024:1998+A1:2001+A2:2003 et EN 61000-6-2:2001 (immunité).
La radiation laser est émise à partir de l’émetteur optique à travers une fenêtre en
verre placée à la tête du laser et a une divergence de moins de 10 mrad. Aucune
autre ouverture dans la tête ne peut laisser passer de radiation laser.
Attention!
La radiation laser est invisible! Interdiction de regarder le rayon
laser ! Risques graves de lésions pour les yeux! La distance de
sécurité pour la vue est variable et dépend de la puissance du
rayon et de sa divergence! Consulter la feuille de données ci-jointe
pour calculs exacts.
L’installation de produit Laserbit doit être faite de sorte que personne ne puisse
accéder à la fenêtre optique ou traverser le rayon laser par accident. Pour
instructions détaillées, lire la partie Sécurité de l’œil dans le chapitre 5.3.5 du
manuel à la page 20.
Le produit Laserbit possède la totalité des étiquettes stipulées par les normes. De
plus, des avis informatifs sont placés à des endroits clairement visibles où le rayon
laser pourrait être accessible. Une liste des endroits où sont placés les avis
informatifs est donnée dans le chapitre 5.3.5 du manuel (Eye Safety) à la page 20.
Le boîtier de connections extérieure (Outdoor Interconnection Unit) est fournit avec
un fil éléctrique certifié par lequel l’appareil est connecté à la prise de courant. Grâce
à cela, il est possible de débrancher à n’importe quel moment. Il est formellement
interdit d’apporter de quelconques modifications à cette installation. Si une
modification est cependant nécessaire à cause des normes locales, contacter le
fabricant.
Attention!
Tout opération consistant à utiliser le produit Laserbit de façon
différente que celle indiquée dans le manuel pourrait engendrer
des effets indésirables du rayon laser, être dangereuse pour la vue
et provoquer un choc éléctrique!

LaserBit LB Series 4.3 page
5
Sicurezza dei prodotti Laserbit
Laserbit e classificáto di essere un Classe 3B prodotto di lazer.
Il sistema Laserbit e stato collaudato e trovato conforme con
EN 60825-1:1994+A11:96+A2:2001 (sicurezza sul prodotti lazer),
EN 60950-1:2001 (sicurezza eletrica), EN55022:1998+A1:200+A2:2003 Class B
(emissione) ed EN 55024:1998+A1:2001+A2:2003 ed
EN 61000-6-2:2001 (immunitá), Norme Europee.
La radiazione lazer viene emissa dalla ottica del trasmettitore via la finestra di vetro
posizionata sulla fronte della testa di lazer con una divergenza minore di 10 mrad.
Non esiste nessun’ altra appertura attraverso quale radiazione di lazer puó
presentarsi.
Avvertimento!
Radiazione lazer invisibile! Guardando direttamente nel raggio di
lazer puó causare danni permanenti degli ochhi! La distanza di
sicurezza dello sguardo varia secondo la potenza e la divergenza
dello raggio di lazer. Distanza di sucurezza viene communicato
sulla pagina tehnica allegata.
Prodotti Laserbit devono essere installati in tale maniera, che nessuno possa
accedere la finestra ottica o esporsi al raggio di lazer per caso. Per informazioni piu
detagliati vedi la parte Sicurezza Ochhi del capitolo 5.3.5 nel manuale sulla pagina
20.
I prodotti Laserbit veranno forniti con tutte segnalazioni previste nelle norme. In
addizione segnalazioni informative devono essere posizionate nel posti ben’ visibili
dove il raggio di lazer puó essere accesso. Le locazioni delle segnalazioni di
sicurezze sono demostrati sulla pagina 20 del manuale (Capitolo 5.3.5/ Sicurezza
Ochhi)
La Unitá Interconnezione Externa (Outdoor interconnection Unit) viene fornita con
un cavo di allimentazione certificato quale deve essere collegato con la rete di
potenza tramitte una presa per assicurare la separabilita in qualsiasi momento.
Qualunque modifica sul questo impianto e proibito. Se modifiche si devono eseguire
per rispettare la norma locale, si priega di contattare il produttore.
Per garantire la conformitá con la norma EN 60950, il sistame deve essere installato
dal produttore o dai partner certificati.
Attenzione!
Qualsiasi operazione di Laserbit diversa di quello descritto in
questo manuale puó causare non desiderata radiazione lazer e puó
essere pericoloso per gli ochhi o causare scossa electrica!

LaserBit LB Series 4.3 page
6
1 Table of contents
1Table of contents.............................................................................................................. 6
2Introduction...................................................................................................................... 8
2.1 What is FSO? .......................................................................................................... 8
2.2 Optical Free-space Transmission........................................................................ 10
2.3 Typical applications.............................................................................................. 11
2.4 About Laserbit ...................................................................................................... 12
3Grouping by product name............................................................................................ 12
3.1 Laserbit LB1500 series......................................................................................... 12
3.2 Laserbit LB2500 series......................................................................................... 13
3.3 Laserbit LB5000 series......................................................................................... 14
4Product grouping by interface type............................................................................... 16
4.1 100Mbps TP interface........................................................................................... 16
4.2 100Mbps Fast-Ethernet systems with TC interface........................................... 17
4.3 E1 interface systems.............................................................................................. 18
4.4 E2 interface systems.............................................................................................. 19
4.5 E3 Interface systems............................................................................................. 20
4.6 STM 1 systems....................................................................................................... 21
5Product matrixes............................................................................................................ 21
5.1 Interface matrix .................................................................................................... 21
5.2 Power supply configuration................................................................................. 21
6Content of the package .................................................................................................. 22
6.1 Contents of a Laserbit LB-1500 link................................................................... 22
6.2 Contents of a Laserbit LB-2500 link................................................................... 23
6.3 Contents of a Laserbit LB-5000 link................................................................... 23
7Sites of installation......................................................................................................... 24
7.1 Key factors of operation....................................................................................... 24
7.2 Preferred installation sites ................................................................................... 25
7.3 Distance measurement.......................................................................................... 26
7.4 Direct sunshine...................................................................................................... 26
8Eye safety........................................................................................................................ 26
9The mounting bracket.................................................................................................... 28
9.1 Fixing High-End product range brackets........................................................... 28

LaserBit LB Series 4.3 page
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10 System installation..................................................................................................... 30
10.1 On the table test .................................................................................................... 30
10.2 LB-1500 systems.................................................................................................... 31
10.2.1 What is LB-1500 about?................................................................................. 31
10.2.2 How can you install the ODIU?...................................................................... 31
10.2.3 Fixing the heads.............................................................................................. 33
10.2.4 Alignment of the heads................................................................................... 34
10.2.5 Connecting to your Network........................................................................... 39
10.2.6 Connecting to the management....................................................................... 40
10.3 LB-2500 systems.................................................................................................... 41
10.3.1 What is LB-2500 about?................................................................................. 41
10.3.2 How can you install the ODIU?...................................................................... 41
10.3.3 Fixing the heads.............................................................................................. 43
10.3.4 Alignment of the heads................................................................................... 44
10.3.5 Connecting to your Network........................................................................... 49
10.3.6 Connecting to the management....................................................................... 50
10.4 LB-5000 systems.................................................................................................... 51
10.4.1 What is LB-5000 about?................................................................................. 51
10.4.2 How can you install the ODIU?...................................................................... 51
10.4.3 Fixing the heads.............................................................................................. 53
10.4.4 Alignment of the heads................................................................................... 54
10.4.5 Connecting to your Network........................................................................... 59
10.4.6 Connecting to the management....................................................................... 60
10.5 Outdoor interconnection unit with Heater......................................................... 61
10.6 48 VDC Power supply connections...................................................................... 62
Warranty conditions............................................................................................................... 63
11 Appendix A................................................................................................................. 65
a. Product registration form........................................................................................ 65
b. Failure report form................................................................................................... 66
11.1 LB-1500 Data Sheet .............................................................................................. 67
11.2 LB-2500 Data Sheet .............................................................................................. 68
11.3 LB-5000 Data Sheet .............................................................................................. 69

LaserBit LB Series 4.3 page
8
2 Introduction
2.1 What is FSO?
FSO is free space optics provides point-point broadband communications using
Laser Light as the transmission medium.
FSO is a state of art data communication method which is based on a very old
communication solution. Ancient Chinese developed a protection system against the
Mongol tribes, building watchtowers within the line of site to other towers. And as
soon as the towers saw some hostile sign on the horizon they use they shield to
reflect the sun to the remote towers. In this way the area could be prepared against
the attack in a very short period of time.
In the ancient times for this communication use the mirror
as a transmitter and the sunlight was the light source, and
the receiver was the remote guard’s eye. This basic
signalling method was developed later into up
communication device which used „line coding”. This
allowed the guards to tell the number of enemy, or the
direction they are coming from.
Current FSO systems use a laser-diode as a light source,
and a receptor diode (photo diode) to receive the signals
coming from the laser diode from the transmitter side. But
the basic elements are still the same: line of site between
the communication nodes, and individual line coding. It is all about performance.
Laserbit offers FSO systems with the highest power budget available on the
market.
Why is it important?
Because of in the ancient Chinese times, the rain, the fog, or even the cloudy
weather, could impact the operation of the whole system.
In the FSO units, comprising light source and receiver the cloud problem was
solved, but development conditions still can impair
performance. To go throw the rain, the fog, or snow you
need more and more power to be seen from the remote
side. Achievable power levels are limited by a number of
factors including eye safety.
In this way there is no other choice to see more than
„training the eye”. Making the receiver more and more
sensitive to sense delight emitted from the remote side.
Laserbit offers high transmit power and also very hard
receiver sensitivity. These two factors combined to provide one of the best
performing FSO systems on the market today.

LaserBit LB Series 4.3 page
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To meet the demands for every higher bandwidth, Laserbit Communications
continues to invest heavily in research and development with the newest product line
which offers Gigabit speeds being launched.
This manual describes the Laserbit LB series of free space laser transmission
system.
The Laserbit LB product range offers cost effective reliable free space laser
transmission for two Mbps up to 1000 Mbps data to the air, where a clean line of site
is available. It delivers the most effective point-to-point connection between
computer networks or telephone exchanges.
No need for installing cables, no rental costs, no licensing requirements.
Ideal for urban areas or city centres, where the use of these lines are expensive.
Suitable for factories or industrial environments where high noise level can interfere
with the transmitted data. The best choice to make a connection across rivers and
other natural or artificial obstacles, where cable is not available.
The transmission technique used in the Laserbit FSO devices provides
transparent and wire-speed data transfer with virtually zero latency. Because they
use infrared light as the transmission medium, Laserbit system do not require
frequency licenses and the transmission is not effected by electro-magnetic or radio-
frequency interference. Basically the Laserbit link can be considered as a virtual
fibre in the air, which ends in real fibre optic cable at both ends.
Our product is built using high quality components for operation in even the most
adverse conditions.
Metal housing gives robust, waterproof environment for the electronics.
The shield protects the device from direct sunlight and provides extra air isolation.
The Laserbit LB systems comprise two laser-heads and the two indoor
interconnection units (OIU) - one at each end. The interface connections are housed
in the outdoor unit together with the PSU of the system.
Best practises were employed in cost engineering throughout the development of
Laserbit.

LaserBit LB Series 4.3 page
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2.2 Optical Free-space Transmission
The principle used in free space laser transmission is very similar to the one is used
for fibre optic transmission. The difference is while fibre optic devices use electronics
and optics optimized for transmission to the air. Also one can observe to the
similarity in the transmission properties. No galvanic contact, no ground-loops, no
need for surge protection, noise immunity, long distances, high bandwidth.
What makes it unique – and difficult to design – is that it does not require any
transmission medium like fibre or copper, but it has to cope with the dynamically
changing parameters. For instance while the attenuation of an optical fibre is
constant, the attenuation of the atmosphere between the laser units can change
dramatically (depending on the weather conditions).
The laser-heads are usually placed on top of building, where the clean line of site is
guaranteed and the beam cannot be interrupted.
In the head the incoming signal is amplified, encoded, and then drives the laser-
diode. The transmitter optics assures the proper beam shape and controls the beam
divergence. The receive optics perceives and directs the transmitter signal to the
photo diode. The diode converts it back into electrical, than it is decoded, amplified
and converted.
There are several things that can influence the quality of transmission. We can
classify those factors into three main groups.
System conditions - transmitting power, transmitter’s wavelength, beam divergence,
receiver optics diameter, receiver sensitivity, parameters of optical system and
casing. These parameters determine the system’s characteristic at a certain
distance and are controlled by system design and factory set up.
Weather conditions - molecular absorption, particle scattering and turbulence. These
elements have great effect on the operational conditions of the system. We do not
have very much influence on them; proper product selection can eliminate the
undesirable effects.
Environmental conditions - building movements, direct sunlight, refractive surfaces.
These are also key factors related to the installation sites and can be controlled by
appropriate site survey and system installation

LaserBit LB Series 4.3 page
11
2.3 Typical applications
Most typically the Laserbit-TP is used to interconnect LAN-s. The system is
protocol transparent, thus other applications also can be taken into consideration.
Appropriate interface converters are needed and system bandwidth must be
matched for that.
Here we collected some circumstances, where the employment of the Laserbit is
the most adequate and cost effective solution.
Those are:
Areas with natural or artificial obstacles
Where cable is actually not an alternative, like across
rivers or railways or in rugged terrain.
Urban areas
Where only leased lines are available with
limited speed, and high rental cost. With Laserbit
links you can establish on line LAN-to-LAN
connections.
Industrial areas
Where you have noisy environment with high EMI or
RFI. Factory buildings, airport objects can be
connected through laser link.
ISP connections
Where high bandwidth is required. ISP’s can
offer high-speed links to their customers or
trunks can be established between ISP’s
instead of expensive leased lines.
Cor
p
orate
LAN ISP

LaserBit LB Series 4.3 page
12
2.4 About Laserbit
Laserbit Communications Corporation was established in 1999, building
on ten years of research and development activities in the field of
telecommunications. The British-American-Hungarian joint venture was founded by
two innovators Mr. Bela Gyoeri and Mr. Janos Pallagi.
The profile of the firm is solely the
development of wireless
transmitting with laser beams.
They generated a whole R&D,
product, quality, and sales’
infrastructure, which gives that
the Laserbit can be named as a
very stable company of the
telecommunication market of the
world today.
After a few years the Laserbit Com. Co. became a worldwide company and now
it has numerous partners like USA, Canada, Germany, United Kingdom, Ireland,
Greece, Portugal, Switzerland, Spain, the Benelux-States, Turkish, Poland, Austria,
Brazil, Russia, and Singapore. In the other hand the expansion of markets and
partners in the Laserbit is keep going today which are helped with trainings,
meetings and other programs and a fine support community.
The purpose is to manufacture cost-effective and best quality products which are
simultaneously suitable for telecommunication standards and customers’ demands.
Together with Laserbit wants to earn bigger breakthroughs in the field of laser
communication with it can take a hand in the advance of the modern World.
3 Grouping by product name
In this chapter we will give you overview of our products.
3.1 Laserbit LB1500 series
The LB-1500 series products from
Laserbit are laser based free space
optical systems designed to provide
flexible, reliable and secure solution for
high speed wireless connections up to
1500 m. Due to their modular design the
equipments are easy and fast to
troubleshoot and upgrade in the field.
Adjustable transmitter optical system
allows custom configuration of the system
for specific installations. The patented

LaserBit LB Series 4.3 page
13
Aperture Control Mechanism delivers outstanding system availability figures. The
transparent and wire speed data transfer together with virtually zero latency assures
the easy integration of the system in all environments. Furthermore, LB-1500 series
systems can be ordered with IP based SNMP compatible device management that
allows remote control and monitoring of the equipment. Because they use infrared
light as transmission medium, Laserbit systems do not require frequency licenses
and the transmission is not affected by electro-magnetic interference. The
concentrated laser beam is extremely hard to tap, even to discover since it cannot
be detected by spectrum analyzers. Basically, a Laserbit link can be considered
as a virtual fibre in the air.
The Laserbit LB-1500 systems comprise of two Laser Heads (each containing
two transmitters), two Outdoor Interconnection Units (ODIU) and two sets of
interconnection cables — one at each end. The Laser Heads are installed outdoors,
where a clear optical path exists between the two sites. Each head is equipped with
heavy duty Alignment Base Unit, which allows exact positioning and ensures reliable
long-term operation of the system. The head assembly features rear and front doors
that provide easy access to the internal parts on the field during installation,
troubleshooting or upgrade procedures. Next to the head the Outdoor
Interconnection Unit provides fast and easy interconnection between the laser head
and the cable coming from the network equipment. Moreover the ODIU houses the
Power Supply Unit (PSU) of the system and the network interface. The PSU
provides the low voltage power required to operate the laser head while the data
port offers direct connectivity for standard network equipments. A variety of standard
copper and fibre interfaces are available for voice and data applications. The system
contains built-in signal monitoring unit, which features a visual signal strength
indicator and LINK status information accessible on the rear of the head assembly.
The optional IP Based Management Hardware is placed in an Indoor Interconnection
Unit (IDIU). The bar graph of the IDU displays the actual signal strength level while
the LED indicators show the presence of Minor or Major alarm condition. With the
help of the relay contacts an external alarm monitoring equipment may be connected
to the system to process the alarm signals further .In addition to the above
Laserbit BitViewTM software allows the monitoring of the link’s operation
through a proprietary graphical interface (GUI) via Ethernet or RS-232 ports or a
third party SNMP manager via TCP/IP connection. .
Industry standard network interfaces and clear upgrade path for higher bandwidth
protect the customer's investments in Laserbit systems. Moreover, LB-1500
systems offer high level of network flexibility due to their modular design, which
makes them ideal to follow network topology changes.
3.2 Laserbit LB2500 series
The LB-2500 series products from Laserbit
are laser based free space optical systems
designed to provide flexible, reliable and secure
solution for high speed wireless connections up to
2500 m. Due to their modular design the
equipments are easy and fast to troubleshoot and
upgrade on the field. Adjustable transmitter optical

LaserBit LB Series 4.3 page
14
system allows custom configuration of the system for specific installations. The
patented Aperture Control Mechanism delivers outstanding system availability
figures. The transparent and wire speed data transfer together with virtually zero
latency assures the easy integration of the system in all environments. Furthermore,
LB-2500 series systems can be ordered with IP based SNMP compatible device
management that allows remote control and monitoring of the equipment. Because
they use infrared light as transmission medium, Laserbit systems do not require
frequency licenses and the transmission is not affected by electro-magnetic
interference. The concentrated laser beam is extremely hard to tap, even to discover
since it cannot be detected by spectrum analyzers. Basically, a Laserbit link can
be considered as a virtual fibre in the air.
The Laserbit LB-2500 systems comprise of two Laser Heads (each containing
four transmitters), two Outdoor Interconnection Units (ODIU) and two sets of
interconnection cables — one at each end. The Laser Heads are installed outdoors,
where a clear optical path exists between the two sites. Each head is equipped with
heavy duty Alignment Base Unit, which allows exact positioning and ensures reliable
long-term operation of the system. The head assembly features rear and front doors
that provide easy access to the internal parts on the field during installation,
troubleshooting or upgrade procedures. Next to the head the Outdoor
Interconnection Unit provides fast and easy interconnection between the laser head
and the cable coming from the network equipment. Moreover the ODIU houses the
Power Supply Unit (PSU) of the system and the network interface. The PSU
provides the low voltage power required to operate the laser head while the data
port offers direct connectivity for standard network equipments. A variety of standard
copper and fibre interfaces are available for voice and data applications. The system
contains built-in signal monitoring unit, which features a visual signal strength
indicator and LINK status information accessible on the rear of the head assembly.
The optional IP Based Management Hardware is placed in an Indoor Interconnection
Unit (IDIU). The bar graph of the IDIU displays the actual signal strength level while
the LED indicators show the presence of Minor or Major alarm condition. With the
help of the relay contacts an external alarm monitoring equipment may be connected
to the system to process the alarm signals further .In addition to the above
Laserbit BitViewTM software allows the monitoring of the link’s operation
through a proprietary graphical interface (GUI) via Ethernet or RS-232 ports or a
third party SNMP manager via TCP/IP connection.
Industry standard network interfaces and clear upgrade path for higher bandwidth
protect the customer's investments in Laserbit systems. Moreover, LB-2500
systems offer high level of network flexibility due to their modular design, which
makes them ideal to follow network topology changes.
3.3 Laserbit LB5000 series
The LB-5000 series products from Laserbit are
laser based free space optical systems designed to
provide flexible, reliable and secure solution for high
speed wireless connections up to 5000 m. Due to their
modular design the equipments are easy and fast to

LaserBit LB Series 4.3 page
15
troubleshoot and upgrade on the field. Adjustable transmitter optical system allows
custom configuration of the system for specific installations. The patented Aperture
Control Mechanism delivers outstanding system availability figures. The transparent
and wire speed data transfer together with virtually zero latency assures the easy
integration of the system in all environments. Furthermore, LB-5000 series
systems can be ordered with IP based SNMP compatible device management that
allows remote control and monitoring of the equipment. Because they use infrared
light as transmission medium, Laserbit systems do not require frequency licenses
and the transmission is not affected by electro-magnetic interference. The
concentrated laser beam is extremely hard to tap, even to discover since it cannot
be detected by spectrum analyzers. Basically, a Laserbit link can be considered
as a virtual fiber in the air.
The Laserbit LB-5000 systems comprise of two Laser Heads (each containing
four transmitters), two Outdoor Interconnection Units (ODIU) and two sets of
interconnection cables — one at each end. The Laser Heads are installed outdoors,
where a clear optical path exists between the two sites. Each head is equipped with
heavy duty Alignment Base Unit, which allows exact positioning and ensures reliable
long-term operation of the system. The head assembly features rear and front doors
that provide easy access to the internal parts on the field during installation,
troubleshooting or upgrade procedures. Next to the head the Outdoor
Interconnection Unit provides fast and easy interconnection between the laser head
and the cable coming from the network equipment. Moreover the ODIU houses the
Power Supply Unit (PSU) of the system and the network interface. The PSU
provides the low voltage power required to operate the laser head while the data
port offers direct connectivity for standard network equipments. A variety of standard
copper and fibre interfaces are available for voice and data applications. The system
contains built-in signal monitoring unit, which features a visual signal strength
indicator and LINK status information accessible on the rear of the head assembly.
The optional IP Based Management Hardware is placed in an Indoor Interconnection
Unit (IDIU). The bar graph of the IDIU displays the actual signal strength level while
the LED indicators show the presence of Minor or Major alarm condition. With the
help of the relay contacts an external alarm monitoring equipment may be connected
to the system to process the alarm signals further .In addition to the above
Laserbit BitViewTM software allows the monitoring of the link’s operation
through a proprietary graphical interface (GUI) via Ethernet or RS-232 ports or a
third party SNMP manager via TCP/IP connection. .
Industry standard network interfaces and clear upgrade path for higher bandwidth
protect the customer's investments in Laserbit systems. Moreover, LB-5000
systems offer high level of network flexibility due to their modular design, which
makes them ideal to follow network topology changes.

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4 Product grouping by interface type
4.1 100Mbps TP interface
The Laserbit TP series products are designed to provide easy-to-use and cost-
effective solution for interconnecting Local Area Networks. By utilizing standard
Category 5 cable and using standard 100BaseTX interface the deployment of the
system is easier than ever. The transparent and wire speed data transfer together
with virtually zero latency assures the easy integration of the system in all
environments.
The TP systems should be considered as repeaters in the network. So the
installation distance between the head and the network device is 100m. The
distance on a back to back site is maximum 5 meters, between the heads.
The TP system layout
The head needs a power and data cable, which is connected to the ODIU (Outdoor
Interconnection Unit). The required power for the outdoor unit is 230VAC or
115VAC, depending on the order. Please note that the transformer is not a switching
mode power supply, so has to be configured for the proper voltage before
connection, this has to done before shipment. The heads are fixed 100Mbps and are
auto-negotiating.

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4.2 100Mbps Fast-Ethernet systems with TC interface
LB-TC100 systems are for connecting LAN’s on 100Mbps with 100BaseFX
connection. Maximum installation distance between the head and the network
equipment is 1000meters with MM fibres, and 5000meters with SM fibres.
Connecting the fibre cable from the head to the outdoor box and from the outdoor
box to the FX/TX converter. Make sure that the converter you using can do the
permanent link signal on the FX port.
(Laserbit do recommend: D-Link DFE-855 Media Converter)
For more instruction of the FX/TX converter please refer the user guide of the
converter and for more information contact your local distributor.
100Mbps Fast-Ethernet systems with FO interface layout

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4.3 E1 interface systems
The E1 systems cover the low speed telephony requirements such as connecting
Telephone exchanges, up to 30 individual lines. As a part of the system you will
receive E1 multiplexers. These multiplexers provide fast and easy connection to the
laser device. The TC link speed is 2.048Mbps.
E1 Interface systems layout

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4.4 E2 interface systems
E2 systems provide fast and easy connection for larger phone exchange system on
the speed of 8,192Mbps. This allows 120 separated phone lines to be connected
over the link. Multiplexers are provided to the link. These multiplexers connect via
G703 connection.

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4.5 E3 Interface systems
Laserbit E3 systems provides connection for large data speed, 34Mbps. perfectly
fits for connecting BSCs. Multiplexers are also available for this product. Providing
16 times G703 balanced or unbalanced connection.