SpaceWire IP Tunnel

The SpaceWire IP Tunnel can be used to connect two remote SpaceWire devices or networks using a TCP/IP network, such as the internet. With an IP Tunnel connected to each SpaceWire sub-system, the two IP Tunnels communicate the SpaceWire information as if the devices were directly connected. This allows users to test the integration of their system at a much earlier stage in development and resolve issues when it is easier, and significantly cheaper, to do so. All data packets and time-codes are unaffected, and pass between the sub-systems as if they were directly connected. Also the link status is reflected at each end, such that should one end disconnect then the other IP Tunnel will also disconnect. The SpaceWire traffic is unmodified and maintains it’s sequence, the only impact on performance may be latency from the TCP/IP network. Supplied with the SpaceWire IP Tunnel is host software which maintains the tunnelled connection, and can provide analysis of the traffic. The traffic can also be recorded and displayed on a user specified trigger event, including the option to capture or ignore specific types of packets. Packets and higher level protocols, such as RMAP, are decoded and displayed in easy to understand terms aiding the understanding of link behaviour.

Product Features

  • Enables user to perform ‘Virtual Satellite Integration’

  • Traffic which would normally be exchanged between components over a SpaceWire link is instead tunnelled through the Internet

  • Ensures all data packets and time-codes pass between the two sub-systems in the correct sequence

  • The Tunnels also reflect the link status at each end

  • Supports higher level protocol analysis

  • Simple connection to PC via USB 2.0 interface, no need for additional power

  • Contains 2 x SpaceWire ports, 1 x USB 2.0 port, 1 x internal configuration port

  • Software and accessories included:

    • Windows drivers (Windows 7, Vista, XP, 2000)
    • Linux drivers (2.6 Kernels)
    • IP Tunnel Software (GUI)
    • User manuals (including hardware and software)
    • USB cable (Type A to Type B)
    • 1 year’s technical support and maintenance

Technical Specs

  • Part Number

    103

  • Size
    • 100 x 43 x 31 mm (approx.)

  • Power
    • +5V DC, supplied via USB cable

  • SpaceWire Ports
    • Compliant to SpaceWire Standard (ECSS-E50-12A)

    • Number of SpaceWire Ports: 2

    • Maximum Speed: 200 Mbits/s

    • Data-Strobe skew tolerance: tested on all units to ±3 ns at data rate of 200 Mbits/s

    • Connectors: 9-pin micro-miniature D-type

    • LVDS signalling: Using Xilinx LVDS

  • USB Port
    • USB 2.0 (480 Mbits/s)

  • EMC
    • CE/FCC certified