1 Introduction

The IO-FEP manufactured by SatService GmbH is a frontend-processor which is especially designed for satellite ground stations. It allows to supervise potential-free (alarm-) contacts, to switch external items, to measure different temperatures, to switch and control waveguide- or coaxial-switches, it is possible to assign the inhibit-contacts of the waveguide-switches to up to 10 connected HPAs and additionally it is possible to realize different 1 to n redundancy Systems.

The IO-FEP is available in two different versions: The IO-FEP is the standard version, the IO-FEP-E is the extended version with a larger quantity of digital input and waveguide-switch interfaces. The IO-FEP supervises altogether 32 (IO-FEP-E: 48) digital-inputs via optocoupler. Up to 4 different temperatures can be measured with external PT1000 sensors. To switch external units, the IO-FEP has 6 potential-free relay outputs and 10 photomos-relay outputs. The 8 (IO-FEP-E: 16) waveguide-switches that can be controlled by the IO-FEP are supervised by their position and switching state (for muting the HPA in the switching moment). Also the IO-FEP contains an inhibit matrix, that allows to allocate different inhibit signals of waveguide-switches on different HPAs. So it is possible to mute up to 10 HPAs by up to 8 (IO-FEP-E: 16) waveguide-switches. The IO-FEP also contains a software-inhibit matrix. If the used waveguide-switches are not equipped with an inhibit-contact, nevertheless the connected HPA's can automatically be muted by software.

The data output is provided by 2 different and parallel available interface types: a HTTP Web Interface via an internal Web Server, and a RS232 interface. The sat-nms IO-FEP is controlled remotely by a monitoring and control application through the TCP/IP interface. The IO-FEP implements the protocols HTTP (for both, the user interface and for remote control) and SNMP. The sat-nms IO-FEP MIB may be downloaded from the IO-FEP itself using FTP.

This document is the user manual provided with the sat-nms IO-FEP It contains all necessary information how to install, setup and operate the processor. The user manual is available as a printed document and for online reading on the IO-FEP itself as well.

The paragraphs below give a short overview to the contents of this manual.

Support and Assistance

If you need any assistance regarding our sat-nms IO-FEP, don't hesitate to contact us. We would be pleased to help you by answering your questions.

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  SatService GmbH
  Hardstrasse 9
  78256 Steisslingen
  Germany
  phone +49 7738 99791-10
  fax +49 7738 99791-99
  www.satnms.com