| 5 | | As shown in Figure 1, sandbox 4 consists of 8 nodes and a WiMAX basestation. Both wireless devices (Atheros 5000X mini-PCI card and Intel 6250 mini-PCIe 802.11/802.16) are connected through fixed attenuators to the input/output of the ports of the matrix. |
| 6 | | |
| 7 | | Topology is controlled with the [wiki:Documnetation/Topology/aRFControl RF Transceiver Test System] from [http://www.jfwindustries.com JFW Industries] which is a 9 port programmable attenuator based test system. The topology is controlled through the [http://omf.mytestbed.net OMF] based [wiki:Documentation/Services/bInstrumentationControlService Instrumentation AM]. |
| | 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 a single input/output of the ports of the [wiki:Documnetation/Topology/aRFControl RF Transceiver Test System] from [http://www.jfwindustries.com JFW Industries]. This configuration enables fairly tight control of RF attenuation between the nodes. The topology is controlled through the [http://omf.mytestbed.net OMF] based [wiki:Documentation/Services/bInstrumentationControlService Instrumentation AM]. |
