Changes between Version 16 and Version 17 of Hardware/bDomains/cSandboxes/dSB4

Timestamp:

Mar 2, 2012, 5:14:41 PM (13 years ago)

Author:

nilanjan

Comment:

—

Hardware/bDomains/cSandboxes/dSB4

@@ -3 +3 @@
 == SB4 ==
 
-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 between the nodes. The topology is controlled through the [http://omf.mytestbed.net OMF] based [wiki:Documentation/Services/bInstrumentationControlService Instrumentation AM].
+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].
 
   || [[Image(SB4.jpg, 600px, link=, align=center)]] || [[Image(IMG_0376.jpg, 200px)]] ||
+
+== RF Matrix Control Services ==
+
+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). So in a nutshell
+ * RF attenuator matrix port 1 ----> node1-1
+ * RF attenuator matrix port 2 ----> node1-2
+ * RF attenuator matrix port 3 ----> node1-3
+ * RF attenuator matrix port 4 ----> node1-4
+ * RF attenuator matrix port 5 ----> node1-5
+ * RF attenuator matrix port 6 ----> node1-6
+ * RF attenuator matrix port 7 ----> node1-7
+ * RF attenuator matrix port 8 ----> node1-8
+ * RF attenuator matrix port 9 ----> Wimax BS
+
+Attenuation values between the eight (8) nodes and the BS can be controlled individually with the following URL commands listed below.
+
+1. set - to set attenuation value on given port pairs (example portA=1 , portB=2, attenuation = 20)[[BR]]
+This would set the attenuation value between node1-1 and node1-2 to 20 dB.
+
+{{{
+$ wget -O status http://localhost:5052/instr/set?portA=1\&portB=2\&att=20
+}}}
+
+2. get - to get attenuation on a given pair of ports
+
+{{{
+$ wget -O status http://localhost:5052/instr/get?portA=1\&portB=8
+}}}
+
+3. status - to get attenuation values on all port pairs
+
+{{{
+$ wget -O status http://localhost:5052/instr/status 
+}}}