Changes between Version 22 and Version 23 of Hardware/bDomains/cSandboxes/dSB4


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Timestamp:
Mar 5, 2012, 6:50:47 PM (13 years ago)
Author:
nilanjan
Comment:

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  • Hardware/bDomains/cSandboxes/dSB4

    v22 v23  
    33== SB4 ==
    44
    5 As shown in Figure 1, sandbox 4 consists of 8 nodes and a WiMAX subsystem that consists of a basestation and a controller. To prevent interference, each node is housed in [http://www.ramseytest.com/ Ramsey Electronics RF enclosure] that provides 80 dB of isolation. Nodal wireless devices (Atheros 5000X mini-PCI card and Intel 6250 mini-PCIe 802.11/802.16) are connected to a power combiner and fed through the enclosure access port to the outside SMA connector which is wired to one of the input/output ports of the [http://www.jfwindustries.com/documents/50PMA-012_specsheet.pdf  RF Transceiver Test System] from [http://www.jfwindustries.com JFW Industries]. This configuration enables fairly tight control of RF attenuation matrix between the nodes. The topology is controlled through the [http://omf.mytestbed.net OMF] based [wiki:Documentation/Services/bInstrumentationControlService Instrumentation AM].
     5As shown in Figure 1, sandbox 4 consists of 9 nodes and a WiMAX subsystem that consists of a basestation and a controller. To prevent interference, each node is housed in [http://www.ramseytest.com/ Ramsey Electronics RF enclosure] that provides 80 dB of isolation. There are  8 nodal wireless devices (with Atheros 5000X mini-PCI card and Intel 6250 mini-PCIe 802.11/802.16); these connected to a power combiner and fed through the enclosure access port to the outside SMA connector which is wired to one of the input/output ports of the [http://www.jfwindustries.com/documents/50PMA-012_specsheet.pdf  RF Transceiver Test System] from [http://www.jfwindustries.com JFW Industries]. This configuration enables fairly tight control of RF attenuation matrix between the nodes. The topology is controlled through the [http://omf.mytestbed.net OMF] based [wiki:Documentation/Services/bInstrumentationControlService Instrumentation AM].
    66
    7   || [[Image(SB4.jpg, 600px, link=, align=center)]] || [[Image(IMG_0376.jpg, 200px)]] ||
     7  || [[Image(SB4.1.jpg, 600px, link=, align=center)]] || [[Image(IMG_0376.jpg, 200px)]] ||
    88
    99== RF Matrix Control Services ==
    … …  
    2020 || 7 || node1-7 || 20 ||
    2121 || 8 || node1-8 || 20 ||
    22  || 9 || wimax BS || 50* ||
     22 || 9 || wimax BS || 30* ||
    2323
    2424Attenuation values between each RF attenuator port (ie. the eight (8) nodes and wimax BS) can be controlled individually with the following URL commands listed below.