Changes between Version 64 and Version 65 of Old/Tutorials/k0SDR/Tutorial00

Timestamp:

Sep 5, 2007, 1:13:50 AM (17 years ago)

Author:

jonshan

Comment:

—

Old/Tutorials/k0SDR/Tutorial00

@@ -49 +49 @@
     }}}
 
-== Example: Transmitting/Receiving Sine ==
+== Example: Transmitting/Receiving Sine Waves ==
 Before you run these examples, do the following:
 
@@ -116 +116 @@
 This time the received sine wave is indeed a regular sine wave. 
 
-
 '''Note: the first 1000 data in rxXXX should be discarded. Since the receiver is starting up, the first 1000 data points are not correct.'''
 
-== Troubleshooting: ==
+== Example: Visual Outputs ==
+Before you try these examples, you should have imaged nodes on sandbox 5 using gnuradio_visual.ndz OR manually installed x-window-system and wx-python on the node. Also be sure to have an x-server running on the local machine and make sure X is enabled on all ssh-running machines.
+
+In the previous example, the received signal could only be viewed after it has been moved onto a machine running plotting software. With visual outputs, the researcher can analyze transmitted and received waveforms in real-time.
+
+Some interesting visual applications included with the gnuradio software:
+* usrp_fft.py -- real-time fft
+* usrp_oscope.py -- real-time oscilloscope
+
+Potential applications:
+* Visual spectrum analyzer
+
+== Example: Audio Outputs ==
+Even though there is no sound card on the nodes, it is still possible to listen to sounds generated by the nodes.
+
+== Troubleshooting ==
  * Have you picked the right node as the transmitter and receiver?
  * Have you run the correct Python script at the transmitter?
@@ -126 +140 @@
  * Have you set the gain properly? If you fail to set the gain correctly, chances are the device will run on the saturated mode, and the result will not be pretty. 
 
-
-== Useful links: ==
+== Useful Links ==
  * The official website: http://www.gnu.org/software/gnuradio/index.html
  * GNU Radio overview and evaluation: http://staff.washington.edu/~jon/gnuradio.html