Rhotheta RT-800 Installation And Configuration Manual
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Rhotheta RT-800 Installation And Configuration Manual

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Installation and Configuration Manual
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Wideband Precision Direction Finder
RHOTHETA Elektronik GmbH

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Summary of Contents for Rhotheta RT-800

  • Page 1 Installation and Configuration Manual Wideband Precision Direction Finder RHOTHETA Elektronik GmbH...
  • Page 2 RHOTHETA Installation and Configuration Manual RT-800 Edited by: RHOTHETA Elektronik GmbH Kemmelpark Dr.-Ingeborg-Haeckel-Str. 2 82418 Murnau Germany Tel.: +49 8841 4879 - 0 Fax: +49 8841 4879 - 15 Internet: www.rhotheta.de E-Mail: email@rhotheta.de Copyright © RHOTHETA Elektronik GmbH All rights reserved Issue: 2017/11/7 [Rev 1.05.b]...
  • Page 3 RHOTHETA Installation and Configuration Manual RT-800 Page 3 of 32...

  • Page 4: Table Of Contents

    RHOTHETA Installation and Configuration Manual RT-800 Content Antenna Installation Considerations ................6 General Information ..........................6 Installation Recommendation ......................... 7 Line of Sight and Fresnel Zone ......................8 Reduced Bearing Accuracy Caused by Reflections ................9 Lightning Protection ..........................10 North Alignment ............................
  • Page 5 RHOTHETA Installation and Configuration Manual RT-800 List of figures Fig. 1 Antenna Mounting......................7 Fig. 2 Line of Sight and Fresnel Zone ..................8 Fig. 3 Illustration of Reflections at fixed locations ..............9 Fig. 4 North Marking of Antenna Unit ..................11 Fig.

  • Page 6: Antenna Installation Considerations

    RHOTHETA Installation and Configuration Manual RT-800 1 Antenna Installation Considerations 1.1 General Information For static bearing applications like e.g. VTS (vessel traffic service), a high bearing accuracy is demanded, with small tolerable bearing errors. For this purpose the antenna unit possibly has to be calibrated in order to compensate minor unbalances in rotation, but especially the antenna position at the installation site has to be chosen properly for bearing purposes.

  • Page 7: Installation Recommendation

    RHOTHETA Installation and Configuration Manual RT-800 1.2 Installation Recommendation The quality of the bearing results depends largely on the position of the antenna. So, an antenna position has to be found, where the transmitter´s wavefield can reach the bearing antenna as undisturbed as possible.

  • Page 8: Line Of Sight And Fresnel Zone

    RHOTHETA Installation and Configuration Manual RT-800 1.3 Line of Sight and Fresnel Zone There must be a direct line of sight between the transmitter (ship) and the antenna unit. Furthermore the Fresnel Zone (http://en.wikipedia.org/wiki/Fresnel_zone) must be free of any obstacles.

  • Page 9: Reduced Bearing Accuracy Caused By Reflections

    RHOTHETA Installation and Configuration Manual RT-800 1.4 Reduced Bearing Accuracy Caused by Reflections Big natural reflectors in the antenna unit’s surrounding are especially critical! (e. g. mountains in the back-side of the antenna, sharp rocky coasts or forests) Especially if the directly...

  • Page 10: Lightning Protection

    RHOTHETA Installation and Configuration Manual RT-800 1.5 Lightning Protection When installing the RT-800 (AU) at fixed coastal locations, precautions must be taken regarding lightning protection. For this reason RHOTHETA Elektronik GmbH offers an optional Lightning Protection Rod (LPR). The Lightning Protection Rod for precision direction finders is designed to protect direction finders from RHOTHETA against the effects of direct lightning strokes into a direction finder system.

  • Page 11: North Alignment

    RHOTHETA Installation and Configuration Manual RT-800 1.6 North Alignment Bearing values of RT-800 are always displayed and output relatively to the north marking of the antenna unit. This implies that the north marking must be aligned to North in order to display absolute, north related values! Fig.

  • Page 12: Interfaces

    RHOTHETA Installation and Configuration Manual RT-800 2 Interfaces 2.1 Overview Fig. 5 Overview of Interfaces Pos. Designation Meaning See page Power Supply Power supply connector with replacable fuse IP-Audio Encoder (Channel-1) Audio Output for DF and ecoder cofiguration Ethernet ports for remote control (NMEA / Ethernet)

  • Page 13: Device Ports

    RHOTHETA Installation and Configuration Manual RT-800 2.2 Device Ports 2.2.1 Antenna Unit Port (Connecting Cable DCU  AU) Contact / Pin Signal +24 V Output power supply to Antenna Unit RS485 A Serial data connection DCU  AU (9600 Baud / semi-duplex / receive and transmit) RS485 B Input audio signal resp.

  • Page 14: Gps / Rs422 Port

    RHOTHETA Installation and Configuration Manual RT-800 2.2.2 GPS / RS422 Port This optional (Build-To-Order Option) input is used to connect an external GPS-device to set the internal system clock. This is required for syncronisation of the bearing values if several direction finders are connected together by a command and control center.

  • Page 15: Remote Control And Ip-Audio Encoder Ports

    RHOTHETA Installation and Configuration Manual RT-800 2.3 Remote Control and IP-Audio Encoder Ports Item Marking Status LED Blinks during boot process of IP Audio Encoder (red) Status LED Blinking: IP Audio Encoder is sending (green) IP Audio Encoder is not sending...

  • Page 16: Power Supply

    RHOTHETA Installation and Configuration Manual RT-800 2.4 Power Supply 115-230 V / 1.0-0.5 A / 50-60 Hz Power Fuse F1/F2 IEC60127 / T5A / 250V Item / 5x20mm / slow Marking (Neutral) IEC 60320 / C14 inlet for use of power cords with IEC 60320 / C13 plugs.

  • Page 17: Service & Maintenance Ports

    RHOTHETA Installation and Configuration Manual RT-800 2.5 Service & Maintenance Ports 2.5.1 Power Supply and Optional Connections Contact / Pin Signal +12 V to +30 VDC No connections required (internally connected)! GND (Ground) Permanent No connections required (internally connected)! Operation PTT / SBS Optional input in order to suppress self bearing.

  • Page 18: Nmea Bus (Rs 232)

    RHOTHETA Installation and Configuration Manual RT-800 2.5.2 NMEA Bus (RS 232) This is an additional NMEA interface of the DCU. It is recommended to use it only for local tests, because commands sent to the DCU may be interfere with commands sent through...

  • Page 19: Test / Program

    RHOTHETA Installation and Configuration Manual RT-800 2.5.3 Test / Program Port for service or test operation (Software and new firmware upload). Contact / Pin Signal RS232 Tx Output serial data with RS232 level RS232 Rx Input serial data with RS232 level...

  • Page 20: Configuration

    3.1.1 Menu Interface Menu Interface contains settings related to remote control using NMEA-Sentences. 3.1.1.1 NMEA Talk-Mode There are basically two operation modes for getting standard bearing data from the RT-800. Fig. 7 NMEA-Talkmode Settings 1. On Request: The RT-800 sends the data only on request.

  • Page 21: Fig. 8 Nmea-Baudrate Settings

    RHOTHETA Installation and Configuration Manual RT-800 3.1.1.2 NMEA Internal Baudrate Internally the control panel of the RT-800 (display with buttons) is connected to a serial-to- ethernet converter by a serial line. This implies that the same serial configurations must be used in both, the control panel and the serial-to-ethernet converter.

  • Page 22: Menu System

    Fig. 9 System – Audio Line Output Setting 3.1.2.2 Antenna Offset If a fixed bearing offset is present after mechanical installation of the RT-800 AU (i.e. Antenna Unit is not exactly aligned with North), this offset could be compensated using the “Antenna Offset”...

  • Page 23: Configuration Of Remote Control Over Ip

    • Connect the RT-800 NMEA/Ethernet port to your local LAN network. • If a DHCP server is available in your network, the RT-800 will get an initial IP address depending on your DHCP router settings. You can use an IP scanner or just look at your router configuration console or as example windows DHCP server at the new clients table to see the actual RT-800/MOXA IP address.
  • Page 24 RHOTHETA Installation and Configuration Manual RT-800 this configuration also temporary to a static IP address of the same subnet 192.168.127.xxx Network configuration: • Start a standard web browser console and input the actual detected IP address of the RT-800 / MOXA device.
  • Page 25 RHOTHETA Installation and Configuration Manual RT-800 Basic Infos: Name of RT-800 / MOXA device. Internal serial Settings Attention: Any change of this values will result in no more proper operation of the RT-800.  Do not change Operating (TCPIP) settings:...

  • Page 26: Configuration Of Audio Over Ip (Streaming Into Lan)

     if NO DHCP server is available and no static IP mode is configured, it can take up to 4 minutes before the IP address will be announced over rthe speakwer. The actual RT-800 audio IP address will be announced after Power On of the RT-800 over the headphone connector near the Audio/LAN connector on the back side.
  • Page 27 Barix Instreamer audio device. You can use as example Google Chrome or the Microsoft Internet Explorer. • Connect the RT-800 NMEA/Ethernet port to your local LAN network. Network configuration: • Start a standard web browser console and input the actual detected/static IP address of the RT-800 Audio Barix device.
  • Page 28 RHOTHETA Installation and Configuration Manual RT-800 Audio configuration: recommended audio settings Streaming configuration: recommended settings Individual port value for BRTP protocol Individual port value for second optional Internet radio (VLC) protocol Page 28 of 32...

  • Page 29: Configuration Of Audio Exstreamer (Streaming From Lan)

    See also >> Example of complete Network Scenario (page 31) For the remote control site audio generation, this optional additional small stand alone device is the recommended solution and provided by RHOTHETA. This device (Exstreamer) decodes audio streams and play out the received audio signals to amplifiers or speakers.

  • Page 30: Configuration Of Exstreamer At Remote Site

    RHOTHETA Installation and Configuration Manual RT-800 3.4.1 Configuration of Exstreamer at Remote Site The BARIX Exstreamer device is also configured with any standard web browser/console. The IP address will be announced after Power On over the headphone connector. This can take up to 4 minutes if no DHCP server is available at the connected LAN network.

  • Page 31: Example Of Complete Network Scenario

    RHOTHETA Installation and Configuration Manual RT-800 3.5 Example of complete Network Scenario At this example a complete network scenario is shown. There is used a public Internet connection with port forwarding. For professional uses, with as example VPN connection, no port forwarding is necessary because then all devices are working (virtually) in the same network without the use of gateway addresses.

  • Page 32: Appendix

    RHOTHETA Installation and Configuration Manual RT-800 4 Appendix 4.1 List of abbreviation Abbreviation Meaning Remarks Antenna Unit CP/SS Cospas-Sarsat Display & Control Unit Direction finder Degree (° = 60' ) Emergency Locator Transmitter Ground Global Positoning System Identification Internet Protocol...

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