1 Introduction

The sat-nms LFTXRX fibre optical link is a high performance transmission system which transmits a complete frequency band, with all its separate carriers, over a single mode fibre with length up to 5km. The big advantages of fibre optical links are:

• Lightning protection
• Fully isolated between the two destinations
• No ground loops
• bug proof

Two types of optical converters are available

• sat-nms LFTX --- optical transmitter which converts from IF input spectrum to optical output at 1310nm
• sat-nms LFRX --- optical receiver which regenerates the optical signal back to an IF spectrum

SatService offer the LFTXRX modules for different frequency bands.

• sat-nms LFRX-L and LFTX-L --- 950 to 2150MHz
• sat-nms LFRX-B and LFTX-B --- 50 to 2150MHz
• sat-nms LFRX-10 and LFTX-10 --- 950 to 2150MHz and 10MHz reference frequency for BUC
• sat-nms LFRXO10 and LFTXO10 --- 10MHz only

Additional there are optional modules available which will be supported by the software and the backplane

• sat-nms LFSW --- RF-Transfer Switsch which allowes to build redundancy paths with the optical link
• sat-nms TBD --- More modules are possible, please define your request

The paragraphs below give a short overview to the contents of the documentation. A subset of this documentation is stored on the device itself, the complete documentation is available on the sat-nms documentation CD and at www.satnms.com.

• Installation : The installation chapter guides through the installation and setup of the sat-nms LFTXRX. It describes the mechanical concept of the chassis and the assignment of the connectors. Finally you learn in this chapter how to set the sat-nms LFTXRX's IP address, which is a essential precondition to operate the sat-nms LFTXRX by means of a web browser. This section is available in the printed version only.
• Operation : The sat-nms LFTXRX is operated using a standard web browser like the Internet-Explorer or Mozilla Firefox. The user interface design is straight forward and clearly structured. Operating the sat-nms LFTXRX is mostly self-explanatory. Nevertheless, the 'Operation' chapter outlines the map of web pages which make up the sat-nms LFTXRX user interface and elaborately describes the meaning of each alterable parameter.
• Remote Control : The sat-nms LFTXRX provides a versatile remote control interface. A monitoring & control software may fully operate the sat-nms LFTXRX either through a TCP/IP network connection or through the RS232 interface of the sat-nms LFTXRX. This chapter describes the communication protocol used for remote control and lists all parameters accessible through the remote interface.
• Theory of Operation : This chapter gives a short overview how the optical links work and which features are supported.
• Specifications : At the end of the document, the specifications applicable to the sat-nms LFTXRX are summarized in this chapter.

Support and Assistance

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

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