SATELLITE COMMUNICATIONS

Xelsat offers products of worldwide known suppliers of satellite communication

Advantech C-Band to 70MHz Down-Converter

The ARDN described in this section is Advantech's rackmount Downconverter that accepts inputs at C-Band and provides one 70 MHz output (140 MHz optional).
Features:
  • CE Marking
  • Fully meets IESS 308/309 Phase/Noise requirements
  • Compact rackmount package
  • 1:12 redundant switching operation (with an Advantech 1:12 switching controller)
  • Optional 1:1 built-in redundant configuration
  • Remote Monitor & Control via serial interface (RS485)
  • Front Panel display of status and control functions
  • Phase-locked local oscillator to internal 10 MHz reference source ( an external 10 MHz reference optional)
  • Converts C-Band (3.4 - 4.3 GHz ) signals to 70 MHz (140 MHz optional)
Contact sales


The ARDN described in this section is Advantech's rackmount Downconverter that accepts inputs at C-Band and provides one 70 MHz output (140 MHz optional). The ARDN can be used for SCPC, DAMA and TDMA as well as full transponder HDTV and traditional analog TV. Spectral purity, stability, group delay characteristics fully meet or exceed the requirements of all domestic, international, and regional commercial satellite networks.

An output of 10 MHz reference resource is extended to the rear connector panel. An external reference input allows the system to operate from an external source and includes circuitry to switch to the external source. In practice the reference output from one shelf is connected to the reference input of the next in a continuous loop to lock all downconverters to a single reference. In this way the system maintains a very high degree of reliability.

With an Advantech's 1:N (N up to 12 now) switching controller, the poll of down-converters can easily be configured as 1:N redundant operation. If one on-line upconverter fails, it will immediately send an alarm by a dedicated line in the ribbon daisy-chain cable to the Switch Controller. At almost same time, the Switch Controller will send switch commands to relevant IF input & RF output switches and configuration information including frequency and attenuation of failed upconverter to the backup upconverter before it will be switched to be on-line. Typically, total switch time will be less than 50 ms.