<?xml version='1.0' encoding='ASCII'?>
<flow_graph>
<timestamp>Sun Mar 17 21:00:28 2013</timestamp>
<block>
<key>options</key>
<param>
<key>id</key>
<value>pfb_sync_test_qt</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>title</key>
<value></value>
</param>
<param>
<key>author</key>
<value></value>
</param>
<param>
<key>description</key>
<value></value>
</param>
<param>
<key>window_size</key>
<value>1280,1024</value>
</param>
<param>
<key>generate_options</key>
<value>qt_gui</value>
</param>
<param>
<key>category</key>
<value>Custom</value>
</param>
<param>
<key>run_options</key>
<value>prompt</value>
</param>
<param>
<key>run</key>
<value>True</value>
</param>
<param>
<key>max_nouts</key>
<value>0</value>
</param>
<param>
<key>realtime_scheduling</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(10, 10)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>sps</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>2</value>
</param>
<param>
<key>_coordinate</key>
<value>(105, 126)</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>300000</value>
</param>
<param>
<key>_coordinate</key>
<value>(14, 124)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>import</key>
<param>
<key>id</key>
<value>import_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>import</key>
<value>import random, math, cmath</value>
</param>
<param>
<key>_coordinate</key>
<value>(14, 77)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_packed_to_unpacked_xx</key>
<param>
<key>id</key>
<value>blocks_packed_to_unpacked_xx_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>byte</value>
</param>
<param>
<key>bits_per_chunk</key>
<value>8</value>
</param>
<param>
<key>endianness</key>
<value>gr.GR_MSB_FIRST</value>
</param>
<param>
<key>num_ports</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(419, 10)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_throttle</key>
<param>
<key>id</key>
<value>blocks_throttle_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>byte</value>
</param>
<param>
<key>samples_per_second</key>
<value>samp_rate</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(436, 97)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>digital_psk_mod</key>
<param>
<key>id</key>
<value>digital_psk_mod_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>constellation_points</key>
<value>4</value>
</param>
<param>
<key>mod_code</key>
<value>"gray"</value>
</param>
<param>
<key>differential</key>
<value>True</value>
</param>
<param>
<key>samples_per_symbol</key>
<value>sps</value>
</param>
<param>
<key>excess_bw</key>
<value>0.35</value>
</param>
<param>
<key>verbose</key>
<value>False</value>
</param>
<param>
<key>log</key>
<value>False</value>
</param>
<param>
<key>_coordinate</key>
<value>(627, 65)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>digital_pfb_clock_sync_xxx</key>
<param>
<key>id</key>
<value>digital_pfb_clock_sync_xxx_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>ccf</value>
</param>
<param>
<key>sps</key>
<value>sps</value>
</param>
<param>
<key>loop_bw</key>
<value>2*3.14/100.0</value>
</param>
<param>
<key>taps</key>
<value>firdes.root_raised_cosine(nfilts, nfilts,1.0/sps, 0.35, int(22*sps*nfilts))</value>
</param>
<param>
<key>filter_size</key>
<value>nfilts</value>
</param>
<param>
<key>init_phase</key>
<value>nfilts/2</value>
</param>
<param>
<key>max_dev</key>
<value>1.5</value>
</param>
<param>
<key>osps</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(339, 195)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>nfilts</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>32</value>
</param>
<param>
<key>_coordinate</key>
<value>(74, 390)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>amps</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>[1]</value>
</param>
<param>
<key>_coordinate</key>
<value>(7, 390)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>graymap</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>[[3,1,0,2]]</value>
</param>
<param>
<key>_coordinate</key>
<value>(7, 326)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>qtgui_const_sink_x</key>
<param>
<key>id</key>
<value>qtgui_const_sink_x_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>name</key>
<value>QT GUI Plot</value>
</param>
<param>
<key>size</key>
<value>1024</value>
</param>
<param>
<key>ymin</key>
<value>-2</value>
</param>
<param>
<key>ymax</key>
<value>2</value>
</param>
<param>
<key>xmin</key>
<value>-2</value>
</param>
<param>
<key>xmax</key>
<value>2</value>
</param>
<param>
<key>nconnections</key>
<value>2</value>
</param>
<param>
<key>update_time</key>
<value>0.10</value>
</param>
<param>
<key>gui_hint</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(752, 196)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>channels_channel_model</key>
<param>
<key>id</key>
<value>channels_channel_model_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>noise_voltage</key>
<value>noise</value>
</param>
<param>
<key>freq_offset</key>
<value>0.0</value>
</param>
<param>
<key>epsilon</key>
<value>1.0</value>
</param>
<param>
<key>taps</key>
<value>cmath.exp(1j*phase)</value>
</param>
<param>
<key>seed</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(68, 211)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_ctrlport_probe2_c</key>
<param>
<key>id</key>
<value>received_probe2</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>name</key>
<value>received</value>
</param>
<param>
<key>desc</key>
<value>Constellation Points</value>
</param>
<param>
<key>len</key>
<value>1024</value>
</param>
<param>
<key>_coordinate</key>
<value>(195, 519)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_qtgui_range</key>
<param>
<key>id</key>
<value>phase</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Phase</value>
</param>
<param>
<key>value</key>
<value>0.5</value>
</param>
<param>
<key>start</key>
<value>0</value>
</param>
<param>
<key>stop</key>
<value>2</value>
</param>
<param>
<key>step</key>
<value>0.01</value>
</param>
<param>
<key>widget</key>
<value>counter_slider</value>
</param>
<param>
<key>orient</key>
<value>Qt.Horizontal</value>
</param>
<param>
<key>min_len</key>
<value>200</value>
</param>
<param>
<key>gui_hint</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(266, 344)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_ctrlport_probe2_c</key>
<param>
<key>id</key>
<value>time_probe2</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>name</key>
<value>time locked</value>
</param>
<param>
<key>desc</key>
<value>Constellation Points</value>
</param>
<param>
<key>len</key>
<value>1024</value>
</param>
<param>
<key>_coordinate</key>
<value>(447, 440)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_qtgui_range</key>
<param>
<key>id</key>
<value>noise</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Noise</value>
</param>
<param>
<key>value</key>
<value>0.050</value>
</param>
<param>
<key>start</key>
<value>0.0001</value>
</param>
<param>
<key>stop</key>
<value>2</value>
</param>
<param>
<key>step</key>
<value>0.01</value>
</param>
<param>
<key>widget</key>
<value>counter_slider</value>
</param>
<param>
<key>orient</key>
<value>Qt.Horizontal</value>
</param>
<param>
<key>min_len</key>
<value>200</value>
</param>
<param>
<key>gui_hint</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(7, 455)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>digital_costas_loop_cc</key>
<param>
<key>id</key>
<value>digital_costas_loop_cc_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>w</key>
<value>6.28/100.0</value>
</param>
<param>
<key>order</key>
<value>4</value>
</param>
<param>
<key>_coordinate</key>
<value>(610, 279)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_null_sink</key>
<param>
<key>id</key>
<value>blocks_null_sink_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(859, 279)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_ctrlport_probe2_c</key>
<param>
<key>id</key>
<value>phase_probe2</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>name</key>
<value>phase locked</value>
</param>
<param>
<key>desc</key>
<value>Constellation Points</value>
</param>
<param>
<key>len</key>
<value>1024</value>
</param>
<param>
<key>_coordinate</key>
<value>(681, 379)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_vector_source_x</key>
<param>
<key>id</key>
<value>blocks_vector_source_x_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>byte</value>
</param>
<param>
<key>vector</key>
<value>(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50)</value>
</param>
<param>
<key>tags</key>
<value>[]</value>
</param>
<param>
<key>repeat</key>
<value>True</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(190, 71)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_ctrlport_monitor</key>
<param>
<key>id</key>
<value>blocks_ctrlport_monitor_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>en</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(193, 7)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<connection>
<source_block_id>blocks_throttle_0</source_block_id>
<sink_block_id>digital_psk_mod_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
<sink_block_id>qtgui_const_sink_x_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>digital_costas_loop_cc_0</source_block_id>
<sink_block_id>qtgui_const_sink_x_0</sink_block_id>
<source_key>0</source_key>
<sink_key>1</sink_key>
</connection>
<connection>
<source_block_id>digital_costas_loop_cc_0</source_block_id>
<sink_block_id>blocks_null_sink_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>channels_channel_model_0</source_block_id>
<sink_block_id>digital_pfb_clock_sync_xxx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>digital_psk_mod_0</source_block_id>
<sink_block_id>channels_channel_model_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>digital_costas_loop_cc_0</source_block_id>
<sink_block_id>phase_probe2</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blocks_packed_to_unpacked_xx_0</source_block_id>
<sink_block_id>blocks_throttle_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blocks_vector_source_x_0</source_block_id>
<sink_block_id>blocks_packed_to_unpacked_xx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>channels_channel_model_0</source_block_id>
<sink_block_id>received_probe2</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
<sink_block_id>time_probe2</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
<sink_block_id>digital_costas_loop_cc_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
</flow_graph>