Changes between Version 29 and Version 30 of Tutorials/k0SDR/Tutorial04a

Timestamp:

May 21, 2015, 5:47:23 PM (9 years ago)

Author:

nilanjan

Comment:

—

Tutorials/k0SDR/Tutorial04a

@@ -4 +4 @@
 
 === Description ===
-This tutorial will give a walk through on how to used Wiserd to set up USRPs for signal transmission and reception. 
+This tutorial will utilize Wiserd to set up USRPs for signal transmission and reception. 
 
 === Hardware / Software Resources utilized ===
  1. Grid nodes with a USRP2 connect via Ethernet.
  2. ''ubuntu-14-04-64bit-sdr.ndz'': disk image loaded onto nodes.
- 3. Wiserd - interface to configure and stream data to/from USRPs.
+ 3. [http://wiser.orbit-lab.org/wiki/wiser/mSoftware/aWiserd Wiserd] - interface to configure and stream data to/from USRPs.
  4. octave - generate transmit data file and plot received data file.
 
@@ -31 +31 @@
 }}}
 
- * After nodes are imaged, verify that nodes are in POWEROFF state. Otherwise issue the following to turn them off for a 
-
-reboot
+ * After nodes are imaged, verify that nodes are in POWEROFF state. Otherwise issue the following to turn them off for a reboot
 {{{
 nilanjan@console.grid:~$ omf tell -a offh -t system:topo:all
@@ -56 +54 @@
 }}}
 
-The signal will look something like the following in the frequency domain - notice the first half of the spectrum is populate:
+The signal will look something like the following in the frequency domain - notice the first half of the spectrum is populated:
   || [[Image(s1.png, width=500px)]] ||
 
@@ -89 +87 @@
 }}}
 
- * At the wiserd prompt set the carrier frequency, sampling rate & gain. Then link the transmitter to the signal source which 
-
-is the binary file generated in octave from prior step:
+ * At the wiserd prompt set the carrier frequency, sampling rate & gain. Then link the transmitter to the signal source which is the binary file generated in octave from prior step:
 {{{
 > set --uhd_tx_freq 700e6 --uhd_tx_rate 5e6 --uhd_tx_gain 20 --tran_wavefilename s1.bin
@@ -107 +103 @@
 
 The set command is used with multiple arguments in one line:
-''--uhd_tx_freq'' set carrier frequenct to 700MHz
-''--uhd_tx_rate'' set sampling rate to 5M samples/sec
-''--uhd_tx_gain'' set transmit gain to 20dB.
-''--tran_wavefilename''  tells the links the transmitter source to a binary filename.
+
+ ''--uhd_tx_freq'' set carrier frequenct to 700MHz
+
+ ''--uhd_tx_rate'' set sampling rate to 5M samples/sec
+
+ ''--uhd_tx_gain'' set transmit gain to 20dB.
+
+ ''--tran_wavefilename''  tells the links the transmitter source to a binary filename.
 
 ''add --signalfromfile'' opens the above filename, reads the samples and streams to the usrp.
 
 At this point the USRP will continuously transmit the signal util the delete command is issued:
-''delete --signalfromfile'' stops tranmitting signal.
+
+ ''delete --signalfromfile'' stops tranmitting signal.
 
 
@@ -154 +155 @@
 
 Here the set command has an additional argument to limit capturing to 1000 milliseconds:
-''--recv_output_filename'' set receiving signal filename.
-''--recv_running_time''    set receiver run time in milliseconds. (optional)
+
+ ''--recv_output_filename'' set receiving signal filename.
+
+ ''--recv_running_time''    set receiver run time in milliseconds. (optional)
 
 The add command options
-''--timesamplestofile'' streams data from receiver to file
-''--timed''             runs receiver for the specified amount of time. (optional)
+
+ ''--timesamplestofile'' streams data from receiver to file
+
+ ''--timed''             runs receiver for the specified amount of time. (optional)
 
 Received signal file should should be prepended with the frequency, rate and gain:
@@ -173 +178 @@
 
 Received signal should look simiar to
-  || [[Image(rx_signal.png, width=500px)]] ||
+  || [[Image(signal.png, width=500px)]] ||
+