Changes between Version 37 and Version 38 of Hardware/bDomains/cSandboxes/dSB4


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Timestamp:
May 17, 2016, 7:28:24 PM (9 years ago)
Author:
seskar
Comment:

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  • Hardware/bDomains/cSandboxes/dSB4

    v37 v38  
    44As 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 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:/Software/eAM/mInstr Instrumentation AM].
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    6   || [[Image(SB4.jpg, 600px, align=center)]] || [[Image(IMG_0376.jpg, 200px)]] ||
     6  || [[Image(SB4.png, 700px, align=center)]] || [[Image(IMG_0376.jpg, 200px)]] ||
    77
    88As can be seen in figure 1, there are a total of nine (9) input/output ports on the transceiver test system. The first 7 input/output ports are connected to nodes 1 thru 7, respectively while the 8th and 9th input/output ports are connect to  either nodes 1-8 and 19 or the two Wimax base stations (BS1 and BS2). The selection of devices attached to ports 8 and 9 is controlled by [wiki:/Software/eAM/mInstr Instrumentation AM] service.