added a gain slider

diff --git a/gnuradio-examples/grc/usrp/usrp_rx_dpsk.grc b/gnuradio-examples/grc/usrp/usrp_rx_dpsk.grc
index 9b869687a549f28a1d6352c3ded7acab3358fcc1..9843ee6b04a06302d19ae8aedabcda3cce0bd1ba 100644 (file)
--- a/gnuradio-examples/grc/usrp/usrp_rx_dpsk.grc
+++ b/gnuradio-examples/grc/usrp/usrp_rx_dpsk.grc
@@ -1,6 +1,6 @@
 <?xml version='1.0' encoding='ASCII'?>
 <flow_graph>
-  <timestamp>Wed Nov 25 20:45:31 2009</timestamp>
+  <timestamp>Wed Dec  2 11:03:20 2009</timestamp>
   <block>
     <key>options</key>
     <param>
@@ -106,7 +106,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>samp_rate</value>
+      <value>p2p</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -114,11 +114,11 @@
     </param>
     <param>
       <key>value</key>
-      <value>1e6</value>
+      <value>2.0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(20, 234)</value>
+      <value>(13, 314)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -126,46 +126,54 @@
     </param>
   </block>
   <block>
-    <key>usrp2_source_xxxx</key>
+    <key>variable_slider</key>
     <param>
       <key>id</key>
-      <value>usrp2_source_xxxx_0</value>
+      <value>timing_alpha</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>label</key>
+      <value>Timing Alpha</value>
     </param>
     <param>
-      <key>interface</key>
-      <value></value>
+      <key>value</key>
+      <value>.1</value>
     </param>
     <param>
-      <key>mac_addr</key>
-      <value></value>
+      <key>min</key>
+      <value>0</value>
     </param>
     <param>
-      <key>decimation</key>
-      <value>int(100e6/samp_rate)</value>
+      <key>max</key>
+      <value>.5</value>
     </param>
     <param>
-      <key>frequency</key>
-      <value>bb_freq</value>
+      <key>num_steps</key>
+      <value>100</value>
     </param>
     <param>
-      <key>lo_offset</key>
-      <value>float('inf')</value>
+      <key>style</key>
+      <value>wx.SL_HORIZONTAL</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>0</value>
+      <key>converver</key>
+      <value>float_converter</value>
+    </param>
+    <param>
+      <key>grid_pos</key>
+      <value></value>
+    </param>
+    <param>
+      <key>notebook</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(158, 51)</value>
+      <value>(759, 365)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -173,10 +181,10 @@
     </param>
   </block>
   <block>
-    <key>blks2_dxpsk2_demod</key>
+    <key>gr_null_sink</key>
     <param>
       <key>id</key>
-      <value>blks2_dxpsk2_demod_0</value>
+      <value>gr_null_sink_0</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -184,74 +192,70 @@
     </param>
     <param>
       <key>type</key>
-      <value>dqpsk</value>
-    </param>
-    <param>
-      <key>samples_per_symbol</key>
-      <value>samps_per_sym</value>
+      <value>byte</value>
     </param>
     <param>
-      <key>excess_bw</key>
-      <value>0.35</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
     <param>
-      <key>costas_alpha</key>
-      <value>costas_alpha</value>
+      <key>_coordinate</key>
+      <value>(815, 80)</value>
     </param>
     <param>
-      <key>timing_alpha</key>
-      <value>timing_alpha</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_slider</key>
     <param>
-      <key>timing_max_dev</key>
-      <value>1.5</value>
+      <key>id</key>
+      <value>costas_alpha</value>
     </param>
     <param>
-      <key>omega_relative_limit</key>
-      <value>0.005</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>gray_code</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Costas Alpha</value>
     </param>
     <param>
-      <key>verbose</key>
-      <value>False</value>
+      <key>value</key>
+      <value>0.175</value>
     </param>
     <param>
-      <key>log</key>
-      <value>False</value>
+      <key>min</key>
+      <value>0</value>
     </param>
     <param>
-      <key>sync_out</key>
-      <value>True</value>
+      <key>max</key>
+      <value>.5</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(488, 65)</value>
+      <key>num_steps</key>
+      <value>100</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style</key>
+      <value>wx.SL_HORIZONTAL</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>p2p</value>
+      <key>converver</key>
+      <value>float_converter</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>grid_pos</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>2.0</value>
+      <key>notebook</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(13, 314)</value>
+      <value>(598, 367)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -259,10 +263,10 @@
     </param>
   </block>
   <block>
-    <key>wxgui_scopesink2</key>
+    <key>wxgui_fftsink2</key>
     <param>
       <key>id</key>
-      <value>wxgui_scopesink2_0</value>
+      <value>wxgui_fftsink2_0</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -274,35 +278,55 @@
     </param>
     <param>
       <key>title</key>
-      <value>Recovered DQPSK Constellation</value>
+      <value>Receive Spectrum</value>
     </param>
     <param>
       <key>samp_rate</key>
       <value>samp_rate</value>
     </param>
     <param>
-      <key>v_scale</key>
-      <value>0</value>
+      <key>baseband_freq</key>
+      <value>bb_freq</value>
     </param>
     <param>
-      <key>v_offset</key>
-      <value>0</value>
+      <key>y_per_div</key>
+      <value>10</value>
     </param>
     <param>
-      <key>t_scale</key>
-      <value>0</value>
+      <key>y_divs</key>
+      <value>10</value>
     </param>
     <param>
-      <key>ac_couple</key>
+      <key>ref_level</key>
+      <value>-40</value>
+    </param>
+    <param>
+      <key>ref_scale</key>
+      <value>p2p</value>
+    </param>
+    <param>
+      <key>fft_size</key>
+      <value>1024</value>
+    </param>
+    <param>
+      <key>fft_rate</key>
+      <value>15</value>
+    </param>
+    <param>
+      <key>peak_hold</key>
       <value>False</value>
     </param>
     <param>
-      <key>xy_mode</key>
-      <value>True</value>
+      <key>average</key>
+      <value>False</value>
     </param>
     <param>
-      <key>num_inputs</key>
-      <value>1</value>
+      <key>avg_alpha</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>win</key>
+      <value>None</value>
     </param>
     <param>
       <key>win_size</key>
@@ -318,7 +342,30 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(747, 237)</value>
+      <value>(383, 321)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>id</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>1e6/4</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(20, 234)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -329,7 +376,7 @@
     <key>variable_slider</key>
     <param>
       <key>id</key>
-      <value>timing_alpha</value>
+      <value>gain</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -337,11 +384,11 @@
     </param>
     <param>
       <key>label</key>
-      <value>Timing Alpha</value>
+      <value>Gain</value>
     </param>
     <param>
       <key>value</key>
-      <value>.1</value>
+      <value>20</value>
     </param>
     <param>
       <key>min</key>
@@ -349,7 +396,7 @@
     </param>
     <param>
       <key>max</key>
-      <value>.5</value>
+      <value>70</value>
     </param>
     <param>
       <key>num_steps</key>
@@ -373,7 +420,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(759, 365)</value>
+      <value>(152, 378)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -381,10 +428,10 @@
     </param>
   </block>
   <block>
-    <key>gr_null_sink</key>
+    <key>usrp2_source_xxxx</key>
     <param>
       <key>id</key>
-      <value>gr_null_sink_0</value>
+      <value>usrp2_source_xxxx_0</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -392,70 +439,35 @@
     </param>
     <param>
       <key>type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(815, 80)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_slider</key>
-    <param>
-      <key>id</key>
-      <value>costas_alpha</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Costas Alpha</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>0.175</value>
-    </param>
-    <param>
-      <key>min</key>
-      <value>0</value>
+      <value>complex</value>
     </param>
     <param>
-      <key>max</key>
-      <value>.5</value>
+      <key>interface</key>
+      <value></value>
     </param>
     <param>
-      <key>num_steps</key>
-      <value>100</value>
+      <key>mac_addr</key>
+      <value></value>
     </param>
     <param>
-      <key>style</key>
-      <value>wx.SL_HORIZONTAL</value>
+      <key>decimation</key>
+      <value>int(100e6/samp_rate)</value>
     </param>
     <param>
-      <key>converver</key>
-      <value>float_converter</value>
+      <key>frequency</key>
+      <value>bb_freq</value>
     </param>
     <param>
-      <key>grid_pos</key>
-      <value></value>
+      <key>lo_offset</key>
+      <value>float('inf')</value>
     </param>
     <param>
-      <key>notebook</key>
-      <value></value>
+      <key>gain</key>
+      <value>gain</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(598, 367)</value>
+      <value>(158, 51)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -498,7 +510,7 @@
     </param>
     <param>
       <key>gain</key>
-      <value>0</value>
+      <value>gain</value>
     </param>
     <param>
       <key>side</key>
@@ -522,10 +534,10 @@
     </param>
   </block>
   <block>
-    <key>wxgui_fftsink2</key>
+    <key>blks2_dxpsk2_demod</key>
     <param>
       <key>id</key>
-      <value>wxgui_fftsink2_0</value>
+      <value>blks2_dxpsk2_demod_0</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -533,59 +545,102 @@
     </param>
     <param>
       <key>type</key>
-      <value>complex</value>
+      <value>dqpsk</value>
     </param>
     <param>
-      <key>title</key>
-      <value>Receive Spectrum</value>
+      <key>samples_per_symbol</key>
+      <value>samps_per_sym</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>excess_bw</key>
+      <value>0.35</value>
     </param>
     <param>
-      <key>baseband_freq</key>
-      <value>bb_freq</value>
+      <key>costas_alpha</key>
+      <value>costas_alpha</value>
     </param>
     <param>
-      <key>y_per_div</key>
-      <value>10</value>
+      <key>timing_alpha</key>
+      <value>timing_alpha</value>
     </param>
     <param>
-      <key>y_divs</key>
-      <value>10</value>
+      <key>timing_max_dev</key>
+      <value>1.5</value>
     </param>
     <param>
-      <key>ref_level</key>
-      <value>-40</value>
+      <key>omega_relative_limit</key>
+      <value>0.005</value>
     </param>
     <param>
-      <key>ref_scale</key>
-      <value>p2p</value>
+      <key>gray_code</key>
+      <value>True</value>
     </param>
     <param>
-      <key>fft_size</key>
-      <value>1024</value>
+      <key>verbose</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fft_rate</key>
-      <value>20</value>
+      <key>log</key>
+      <value>False</value>
     </param>
     <param>
-      <key>peak_hold</key>
-      <value>False</value>
+      <key>sync_out</key>
+      <value>True</value>
     </param>
     <param>
-      <key>average</key>
-      <value>False</value>
+      <key>_coordinate</key>
+      <value>(487, 64)</value>
     </param>
     <param>
-      <key>avg_alpha</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>wxgui_scopesink2</key>
     <param>
-      <key>win</key>
-      <value>None</value>
+      <key>id</key>
+      <value>wxgui_scopesink2_0</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>title</key>
+      <value>Recovered DQPSK Constellation</value>
+    </param>
+    <param>
+      <key>samp_rate</key>
+      <value>samp_rate/4/20</value>
+    </param>
+    <param>
+      <key>v_scale</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>v_offset</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>t_scale</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ac_couple</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>xy_mode</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>num_inputs</key>
+      <value>1</value>
     </param>
     <param>
       <key>win_size</key>
@@ -601,7 +656,38 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(383, 321)</value>
+      <value>(760, 239)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+  </block>
+  <block>
+    <key>gr_keep_one_in_n</key>
+    <param>
+      <key>id</key>
+      <value>gr_keep_one_in_n_0</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>n</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(873, 151)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -628,8 +714,14 @@
   </connection>
   <connection>
     <source_block_id>blks2_dxpsk2_demod_0</source_block_id>
-    <sink_block_id>wxgui_scopesink2_0</sink_block_id>
+    <sink_block_id>gr_keep_one_in_n_0</sink_block_id>
     <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
+  <connection>
+    <source_block_id>gr_keep_one_in_n_0</source_block_id>
+    <sink_block_id>wxgui_scopesink2_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
 </flow_graph>