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Intelsat Standard A Gateway

Globecomm Systems Intelsat Standard A product line provides flexibility within the context of a standard set of options

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 Earth Station Standard A Gateway

Globecomm Systems Intelsat Standard A Gateway product line provides flexibility within the context of a standard set of options available with the standard design. This terminal line provides Intelsat compliant antenna sizes from 13 to 21 meters, with High-Power Amplifiers (HPA) from 400 to 3,000 Watts depending on the capacity of the earth station.

Standard rack designs and Globecomm Systems' computerized AxxSys™ Earth Station Management System minimize both space requirements and cost. Industry standard 70 or 140 MHz Intermediate Frequency interfaces provide flexibility in choice of baseband modulation equipment.

Both SCPC and TDMA baseband equipment options are available as part of the basic offerings. Other options include carrier power monitor system and an IESS compliant Engineering Service Circuit (ESC) system for IDR carriers, deicing, uninterruptible power system/ backup generator, and fully equipped equipment shelter.

Features:

  • G/T range of 35-39 dB/K at 4 GHz
  • EIRP based on IESS requirements for traffic
  • Ease of use through Advanced AxxSys™ Earth Station Management System
  • Converter design supports up to four transponder operations
  • Reliability through environmental stress screening of critical components
  • Full turnkey services worldwide
  • ITU/Intelsat/FCC compliant

Application Information:

The Globecomm Systems Intelsat Standard A Gateway product line is designed to provide reliable service in the most demanding Intelsat satellite communication applications. These terminals fall into the following general categories:

  • IESS 308/309 IDR/IBS voice/ data trunking
  • IESS 501 Intelsat TDMA voice/ data trunking
  • IESS analog video transmission/ reception
  • IESS digital video uplink terminals
  • Other Intelsat services including DAMA gateway

Up Front Engineering:

Globecomm Systems believes in simulation of system performance up front, in order to ensure that the station will meet or exceed all requirements. The Stage Output Level analysis and G/T versus Elevation Angle analysis are used by our installation engineers to assure the quality of the installed system.

Ease of Use:

Globecomm Systems applies the latest information technology to reduce the operating complexity and cost of Intelsat Gateway earth stations. Features include x-windows or Microsoft NT windows graphical user interface for ease of operator interaction with the system, and relational data base management system options for integration of maintenance and operations functions. Our AxxSys™ Earth Station Management System provides the ultimate in configurability by the user, based on software models of the earth station devices. This approach allows new systems to be generated quickly and cost effectively and allows upgrades to be handled without software development. Integration of maintenance and operations functions allows the user to minimize paperwork, manual processing of data, and consequently, the manpower required to operate a major gateway facility.

AxxSys™ Earth Station Management System:

The AxxSys™ Earth Station Management System consists of a computer workstation which interfaces with the RF equipment (and other system related hardware). The system constantly monitors the RF equipment for faults and, where applicable, provides the ability to control these items through their remote interfaces. The workstation can also be connected to another workstation which acts as an interface to a remote operator.

A key feature of the Globecomm Systems AxxSys™ Earth Station Management System is the ability to remotely log into the system to update software, or to perform software maintenance. This means our customers can obtain the latest version of software, or request software maintenance, without a Globecomm Systems representative on site, thereby saving time and money for everyone. The workstation acts as a command console which enables constant monitoring, remote operator control, event logging, and system configuration. It is provided with a high-resolution color graphics monitor for displaying equipment status, as well as a printer for making hard copies of activity logs and reports. The software permits different security levels of operator interaction with the equipment. Monitor and Control of the Gateway Earth Station is possible from a remote location, using a second workstation connected to the local earth station control center computer.

The monitoring functions associated with the AxxSys™ Earth Station Management System include uplink/downlink frequency, HPA forward power, operational condition (online/standby), readiness condition (normal/alarm), and other system status indications for all uplink/downlink equipment. Control functions include HPA beam on/off, uplink/downlink frequency, and selection of online uplink/downlink equipment.

Earth station management software options include Operations Level and Enterprise Level. The Operations Level includes a Training Mode, automatically generated Trouble Reports, Outage Reports, Equipment History Logs, Equipment Inventory Reports, etc. The Enterprise Level integrates business functions like scheduling of traffic feeds, billing, payroll, accounting, etc. These options allow the earth station operator to reduce the cost of Operations and Maintenance by leveraging the capability of modern Relational Data Base Management System technology. This technology allows functions which previously required manual labor to be consolidated and automated.

Uplink System:

The uplink system consists of the up converter and High-Power Amplifier (HPA) subsystems.

The up converter subsystem is supplied in a redundant configuration. Each up converter input path allows for monitoring. The IF input level to each up converter is adjustable in 0.25 dB steps over a 25 dB range. 1:N redundancy implementation allows for automatic replacement of a single failed up converter. Each up converter is a synthesized dual conversion unit capable of automatically tuning in 125 kHz steps to a locally or remotely selected frequency. The RF output of each up converter can be monitored through a suitable coupler. The output of the online up converter is connected to the HPA subsystem. Wideband up converters with IF equalization are available as an option for wideband carriers like Intelsat TDMA or analog video.

The HPA subsystem is comprised of redundant TWT amplifiers, with power output based on customer requirements. The online HPA feeds a waveguide transmission line which is connected to the antenna OMT through the RF Inter-Facility Link (RFIFL). The output of the standby HPA is connected to a dummy load.

The online HPA output is monitored by a per carrier power monitor system to meet IESS requirements. An optional feature of the AxxSys™ Earth Station Management System is individual carrier power level and bandwidth monitoring.

Downlink System:

The downlink system consists of the Low-Noise Amplifier (LNA) and down converter subsystems.

The RF signals from the receive port of the antenna OMT are fed through a Transmit Reject Filter (TRF) to the Low-Noise Amplifier subsystem. LNA outputs are connected through a coaxial transmission line to the down converter subsystem.

The LNA subsystem consists of redundant GaAs FET amplifiers with a noise temperature consistent with the G/T specified at order. The 1:2 subsystem is mounted on a plate with transmit reject filters and input/output waveguide switches.

The down converter subsystem is supplied in a 1:N redundant configuration. Each down converter input is monitorable through a suitable coupler. The IF output of each down converter is available for signal monitoring. The IF output level of each down converter is adjustable in 0.25 dB steps over a 25 dB range.

1:N redundancy implementation allows for automatic replacement of a failed down converter. Each down converter is a synthesized dual conversion unit capable of automatically tuning in 125 kHz steps to a locally or remotely selected frequency. The RF input to the down converter subsystem can be monitored. Wideband down converters with IF equalization are available as an option for wideband carriers like Intelsat TDMA, or analog video.