Changes between Version 24 and Version 25 of Hardware/bDomains/cSandboxes/dSB4


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Timestamp:
Mar 10, 2012, 10:19:05 PM (13 years ago)
Author:
seskar
Comment:

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  • Hardware/bDomains/cSandboxes/dSB4

    v24 v25  
    33== SB4 ==
    44
    5 As 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].
     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 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].
    66
    77  || [[Image(SB4.jpg, 600px, link=, align=center)]] || [[Image(IMG_0376.jpg, 200px)]] ||
    88
    9 == RF Matrix Control Services ==
     9As can be seen in figure 1, there are a total of nine (9) input/output ports on the transceiver test system. The first 8 input/output ports are connected to nodes 1 thru 8, respectively and the 9th input/output port is connect to the Wimax base station (BS).
    1010
    11 This service controls the RF attenuator matrix. Since there are a total of nine (9) input/output ports on the attenuator matrix, the first 8 input/output ports are connected to nodes 1 thru 8, respectively. The 9th input/output port is connect to the Wimax base station (BS).
    12  || RF Matrix Port || Attached device || Additional fixed ||
    13  ||                ||                 || atten values (dB)
    14  || 1 || node1-1 || 20 ||
    15  || 2 || node1-2 || 20 ||
    16  || 3 || node1-3 || 25 ||
    17  || 4 || node1-4 || 30 ||
    18  || 5 || node1-5 || 20 ||
    19  || 6 || node1-6 || 20 ||
    20  || 7 || node1-7 || 20 ||
    21  || 8 || node1-8 || 20 ||
    22  || 9 || wimax BS || 30* ||
     11 || RF Test System Port || Attached device ||
     12 || 1 || node1-1 ||
     13 || 2 || node1-2 ||
     14 || 3 || node1-3 ||
     15 || 4 || node1-4 ||
     16 || 5 || node1-5 ||
     17 || 6 || node1-6 ||
     18 || 7 || node1-7 ||
     19 || 8 || node1-8 ||
     20 || 9 || wimax BS ||
    2321
    24 Attenuation 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.
     22This configuration creates two distinct set of RF paths that are used to create various topologies.
    2523
    26 1. set - to set attenuation value on given port pairs (example portA=1 , portB=2, attenuation = 20)[[BR]]
    27 This would set the attenuation value between node1-1 and node1-2 to 20 dB.
     24=== Node to Node RF Path ===
    2825
    29 {{{
    30 $ wget -O status http://localhost:5052/instr/set?portA=1\&portB=2\&att=20
    31 }}}
     26[[Image(SB4-Equiv-WiFi.jpg)]]
    3227
    33 2. get - to get attenuation on a given pair of ports
    3428
    35 {{{
    36 $ wget -O status http://localhost:5052/instr/get?portA=1\&portB=8
    37 }}}
     29|| [[Image(S12-A-24.jpg, 250px)]] || [[Image(S12-A-25.jpg, 250px)]] || [[Image(S12-A-52.jpg, 250px)]] ||
     30 
     31=== Node to WiMAX basestation RF Path ===
    3832
    39 3. status - to get attenuation values on all port pairs
     33[[Image(SB4-Equiv-WiMAX.jpg)]]
    4034
    41 {{{
    42 $ wget -O status http://localhost:5052/instr/status
    43 }}}
     35[[Image(S12-B-25.jpg, 400px)]]
     36