May, 2013

31 May

ViaSat SurfBeam 2 Pro-Portable Satellite Terminal

The ViaSat SurfBeam 2 Pro Portable Terminal delivers affordable high-speed Internet access via satellite for workers at temporary sites.

Terminal at-a-glance

  • Easily portable high-speed connectivity
  • Ruggedized for operation in harsh environments
  • Utilizes affordable, high-capacity Ka-Band satellite bandwidth
  • Supports high-speed live video uplinks
  • Quick set-up using built-in antenna pointing aid for rapid
    satellite acquisition
  • Integrated 4-port IP router
  • Web GUI local management and SNMP-based remote management and control

Applications

  • Satellite news gathering
  • Emergency response and disaster relief
  • Tactical military operations
  • Network access for real-time data acquisition in remote areas

The rugged, lightweight terminal is based on ViaSat SurfBeam® 2 technology and builds on the success that made ViaSat SurfBeam the product of choice for Ka-band direct-to- home Internet service. With more than a million terminals shipped, the SurfBeam network has a record of proven reliability, scalability and performance.

The ViaSat SurfBeam 2 Pro Portable Terminal is designed for users requiring high throughput connectivity in a compact and portable package. Field reporters, remote medical and peace workers, and emergency responders benefit from high-speed Internet with the convenience of “near-instant” connectivity even in locations where no other communications infrastructure is available. The form factor is ruggedized to support operation in harsh conditions and supports multiple configuration options to suit user needs. The complete system, including the satellite terminal and antenna, can be packed into a single case for transit and is lightweight enough to be carried by a single user.

The unit enables fast web browsing and supports video streaming, file transfers, VPN connections, and bandwidth-intensive Internet applications. It is capable of delivering downstream rates up to 40 Mbps and upstream rates up to 20 Mbps, and provisioning tools enable the network operator to create different classes of service with configurable downstream and upstream rates. The modem has an embedded acceleration client that works with acceleration servers in the gateway to provide a faster, more responsive user experience. With four standard Ethernet connections, the terminal natively supports up to 4 IP devices, such as PCs, cameras, and routers as well as other user equipment. The antenna includes a collapsible satellite reflector and feed, transmit and receive electronics. The modem can be deployed attached to or located separately from the antenna.

Easy Installation and Operation

The compact SurfBeam 2 Pro Portable Terminal is designed for a quick and reliable user installation in less than 10 minutes by personnel with minimal satellite training. It is part of a complete SurfBeam 2 system that also includes an innovative Satellite Modem Termination System (SMTS) gateway and Network Management Systems (NMS) that facilitate subscriber management with features such as automated service provisioning, diagnostics, and customer support.

…click to see the datasheet for the ViaSat SurfBeam 2 Pro-Portable Satellite Terminal

22 May

AvL Technologies Ka-Band Mobile VSAT IP Broadband Antenna Systems

The AvL Ka-Band Mobile VSAT IP Broadband Antenna System (1.2m) is certified to operate on the ViaSat Exede service.

AvL’s Ka-Band Broadband Antenna Family offers high reliability, cost-effective solutions for mobile broadband Internet access with new HTS satellites.
These antennas feature the AvL Zero Backlash Cable Drive and an Auto-Acquisition Controller.

AvL’s Ka Broadband antennas are available in the following sizes:

  • 85cm (model 880KVH)
  • 1.0m (model 1080KVH)
  • 1.2m (model 1280KVH)

The antennas offer cost-effective solutions for mobile broadband Internet access, Satellite News Gathering, Disaster Relief, Oil & Gas Data Backhaul,
and Defense & Homeland Security. Antennas in the Models 880KVH / 1080KVH / 1280KVH Ka Broadband Antenna Family operate with:

  • Avanti / HYLAS
  • Eutelsat / Tooway
  • ViaSat / Exede

AvL Auto Acquisition Controller

AvL antenna systems combine the patented AvL Cable Drive positioning system with totally automatic satellite acquisition to provide ease of operation
(without a satellite technician) and ultimate reliability under even the most demanding environmental conditions. Our auto-acquisition controllers contain
embedded software (no software to install!) to automatically find the satellite in minutes providing rapid deployment and operation on any satellite worldwide.

Compatible with every satellite modem without modem interface required, the controllers have integrated GPS to determine exact site location, compass,
base level sensors, and a receiver that allows satellite acquisition and optimum peaking and cross pol nulling without any connection to the RF system
resulting in automatic optimization of azimuth and elevation and polarization alignment.

Safety features include shut off of receive link if movement is detected and a stow command if the vehicle moves or tilt sensors are activated.

AvL Cable Drive

The AvL Cable Drive rotary drive system suffers no backlash and is a simple maintainence free dry mechanism able to operate in a very wide range of difficult and
hazardous conditions without degradation.

The AvL Cable Drive rotary drive technology is an elegant, simple, system that utilizes the averaging effect of many cables wrapped around a drive capstan and
an output shaft.

The most important of specifications for a satellite antenna, particularly an auto-acquisition antenna, is the pointing accuracy and the stability and stiffness
of the positioner under the most extreme environmental conditions. The positioning accuracy is determined by how precisely the positioner can move to a defined
point as well as how stable and stiff the positioner is in maintaining that position. The speed of movement is based on how quickly the positioner can move to
a defined position.

AvL’s patent-pending AvL Cable Drive technology provides the ultimate in precision and stiffness compared to geared drive systems and, unlike most other systems,
is free of backlash. It is a maintenance-free dry mechanism able to operate in a very wide range of difficult and hazardous conditions without degradation.
Originally invented as an inexpensive way to rotate very large antennas accurately and smoothly, the AvL Cable Drive is an elegantly simple system that utilizes
the averaging effect of many cables wrapped around a drive capstan and output shaft.

…see the Datasheet for the AvL 880/1080/1280KVH Series

15 May

Maindata MD5600 IP Encapsulator

The Maindata MD5600 IP Encapsulator presents gateway between IP and digital television networks. It is mandatory equipment in any digital television network for provisioning data services.

IP Encapsulator basic function is to encapsulate IP Packets into digital television MPEG Transport stream packets. IP encapsulator presents gateway between IP and digital television networks. It is mandatory equipment in any digital television network (e.g. DVB-S, S2, DVB-T, T2, ATSC, ISDB etc) for provisioning data services.

Add-on function of MD IPE is QoS allowing to manage data channel bitrates, wet min (CIR), max (PIR) bitrates and priority. QoS main feature is to maximize bandwidth usages dynamically.

In a case entire e.g. DVB channel is used solely for IP services, for example in a case of satellite internet, IPE connects directly to the modulator, most typically via DVB-ASI interface (IP interface is an option). In a case when data services are provided along with TV services IPE connects typically to multiplexer, again via DVB-ASI or IP interface.

IP Data, mainly file downloads, are much less time critical to be transmitted comparing to TV programming. Bandwidth of TV service fluctuates according to the content, part of broadcast capacity remains unused – filled by null packets.

There are 2 possibilities how to provide data services using this unused part of the bandwidth.
a) Place IPE behind multiplexer in front of modulator. In this case IPE acts also as remultiplexer and by replacing null packets by data uses bandwidth left free by TV services. In this case IPE has input for MPEG TS, e.g. DVB-ASI.
b) Leave IPE before the multiplexer, and make multiplexer inform IPE about unused bandwidth. This technique is called “opportunistic data” insertion.

MD IPE encapsulator performs most critical functions, while BNMS provides management layer, including WEB user interface. One BNMS can control many IPEs. IPEs connected to one Digital TV transmission present 1 cluster. In case one of them fails traffic is automatically rerouted to next one.

RMC – remote monitoring client is used to monitor traffic of IPE cluster, PID or data channel and its overheads. RMC is a Java application and thus can be run at different operating systems.

…for more IP Encapsulators

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