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Blue
Coat Appliances |
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Blue Coat provides a family of intelligent
appliances, along with a suite of powerful
software applications, that work together to
give IT organizations the ability to
effectively control security and performance
for all users and applications |
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UNYSAT Universal V/H LNB |
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Description Performance
features
Signal converter for single party reception
The UNYSAT Universal V/H LNB is a Single LNB
signal converter designed for use in single
party reception
of analogue and digital TV, radio and
multi-media contents broadcast via satellite. It
has a single signal
output, and can be connected directly to the
receiver. This type of LNB does not provide for
direct
connection to an additional participant
(receiver or comparable reception unit).
General purpose of the LNB
The LNB (Low Noise Block Converter resp. signal
converter) is the electronic component that
receives the
signal, and is attached to the AZ/EL mount, or
feed arm, on the satellite dish. Its function is
to amplify the
high-frequency signals received by the antenna,
and to convert these into lower frequencies. The
process
involves combining the input frequency range of
the LNB with a Local Oscillator Frequency (LOF),
and
bringing it down to the so-called satellite
intermediate frequency or satellite IF. The
satellite intermediate
frequency is identical to the output frequency
range of the LNB, and can be calculated as the
difference
between the input frequency and the LOF. It is
this transformation that makes it possible to
pass on the
information transmitted and received via the
co-axial cable to the receiver with a minimum of
loss.
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Signal processing (frequency band, polarisation,
satellite block)
The frequency range between 10.70 and 12.75 GHz
is utilised for the reception of programmes via
satellite.
However, this frequency range cannot be
converted to the satellite IF in a single step,
therefore the
frequency range is divided into an upper and a
lower frequency band, known as low band and high
band. In
order to be able to handle a maximum number of
channels within these two frequency bands,
signals are
transmitted in both a horizontal and a vertical
polarised plane. This means that each frequency
can be used
for two separate channels.
The combination of frequency band and
polarisation plane is referred to as a satellite
block. Generally
speaking, four satellite blocks will be
broadcast from the satellite: horizontal low
band, vertical low band,
horizontal high band and vertical high band.
Universal LNBs cover the entire frequency range
involved in satellite reception. They are able
to convert all
four satellite blocks, and to process both
analogue and digital signals.
Switching criteria
Both the conversion of the two frequency bands
and the conversion of the polarisation planes
are effected
separately. Switching between polarisation
planes takes place by means of a variation in
the voltage of the
current supplied to the LNB (14 Volts for the
vertical resp. 18 Volts for the horizontal
plane). On the other
hand, the upper frequency band is controlled via
a 22 KHz signal that is superimposed on the LNB
power
supply current.
Weatherproofing
The TechniSat UNYSAT Universal V/H LNB is a
powerful reception unit that is reliably
protected from the
influences of weather by a robust weatherproof
housing. The housing is simply slipped onto the
AZ/EL
mount, and fixed in position with a single
screw. No additional bracket is required for
this.
Attaching the co-axial cable is also childs
play. All you need to do is to remove the lower
section of the
weatherproof housing, this will expose the
connections provided on the LNB.
Installation example for reception by a single
party
In this example, the TV and radio signals from a
single satellite position are to be supplied to
a single
receiver.
The basic requirements for this include an
external installation (consisting of a satellite
dish antenna with an
AZ/EL mount and a Universal V/H LNB - preferably
one with a weatherproof housing) as well as a
satellite
receiver, an antenna socket and the appropriate
lengths of cable as well as the necessary
F-connectors.
General specifications
Solid construction
Extremely stable mechanically
Very stable frequencies
High cross-polarisation decoupling
Reliable weatherproofing
Connections
1 output for direct connection to a digital or
analogue reception unit, e.g. a receiver
Reception
Single party reception
Digital and analogue channels
Reception frequency range: 10.70-12.75 GHz
Input frequency range
Lower frequency range: 10.70-11.70 GHz
Upper frequency range: 11.70-12.75 GHz
Output frequency range
Lower frequency range: 950-1950 MHz
Upper frequency range: 1100-2150 MHz
LOF
Lower frequency range: 9.75 GHz (+/-3 MHz)
Upper frequency range: 10.60 GHz (+/-3 MHz)
Gain/amplification
Min. 50 dB
Max. 65 dB
Switching criteria
Polarisation switching (vertical/horizontal):
14/18 Volt current signal
Frequency band switching (low/high): 22 KHz
sound signal
Noise (S/N ratio)
Lower frequency range: 0.5 dB max.
Upper frequency range: 0.5 dB max.
Power supply
Operating voltage vertical: 11.5-14 V
Operating voltage horizontal: 16-19 V
Power consumption
Max. 130 mA
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VSAT
Technology
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VSAT
Technology: The latest generation of VSAT
technology represented by the Skystar 180, the
Verizon 360E architecture and the fully DVB-RCS
compliant Alcatel/EMS system.
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Remote
Sensing |
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Oil pipeline monitoring
Rail Management
Infrastructure Planning
Forest Fire Prevention
Urban Planning
Flood and Storm watches
Air Pollution management
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