git.gag.com Git - debian/gnuradio/blob - gr-noaa/apps/usrp_rx_hrpt_nogui.grc

   1 <?xml version='1.0' encoding='ASCII'?>
   2 <flow_graph>
   3   <timestamp>Sun Nov  1 19:32:32 2009</timestamp>
   4   <block>
   5     <key>options</key>
   6     <param>
   7       <key>id</key>
   8       <value>usrp_rx_hrpt_nogui</value>
   9     </param>
  10     <param>
  11       <key>_enabled</key>
  12       <value>True</value>
  13     </param>
  14     <param>
  15       <key>title</key>
  16       <value></value>
  17     </param>
  18     <param>
  19       <key>author</key>
  20       <value></value>
  21     </param>
  22     <param>
  23       <key>description</key>
  24       <value></value>
  25     </param>
  26     <param>
  27       <key>window_size</key>
  28       <value>4096,4096</value>
  29     </param>
  30     <param>
  31       <key>generate_options</key>
  32       <value>no_gui</value>
  33     </param>
  34     <param>
  35       <key>category</key>
  36       <value>Custom</value>
  37     </param>
  38     <param>
  39       <key>run_options</key>
  40       <value>prompt</value>
  41     </param>
  42     <param>
  43       <key>run</key>
  44       <value>True</value>
  45     </param>
  46     <param>
  47       <key>realtime_scheduling</key>
  48       <value>1</value>
  49     </param>
  50     <param>
  51       <key>_coordinate</key>
  52       <value>(10, 10)</value>
  53     </param>
  54     <param>
  55       <key>_rotation</key>
  56       <value>0</value>
  57     </param>
  58   </block>
  59   <block>
  60     <key>variable</key>
  61     <param>
  62       <key>id</key>
  63       <value>max_carrier_offset</value>
  64     </param>
  65     <param>
  66       <key>_enabled</key>
  67       <value>True</value>
  68     </param>
  69     <param>
  70       <key>value</key>
  71       <value>2*math.pi*100e3/sample_rate</value>
  72     </param>
  73     <param>
  74       <key>_coordinate</key>
  75       <value>(575, 19)</value>
  76     </param>
  77     <param>
  78       <key>_rotation</key>
  79       <value>0</value>
  80     </param>
  81   </block>
  82   <block>
  83     <key>variable</key>
  84     <param>
  85       <key>id</key>
  86       <value>sym_rate</value>
  87     </param>
  88     <param>
  89       <key>_enabled</key>
  90       <value>True</value>
  91     </param>
  92     <param>
  93       <key>value</key>
  94       <value>600*1109</value>
  95     </param>
  96     <param>
  97       <key>_coordinate</key>
  98       <value>(301, 19)</value>
  99     </param>
 100     <param>
 101       <key>_rotation</key>
 102       <value>0</value>
 103     </param>
 104   </block>
 105   <block>
 106     <key>variable</key>
 107     <param>
 108       <key>id</key>
 109       <value>sps</value>
 110     </param>
 111     <param>
 112       <key>_enabled</key>
 113       <value>True</value>
 114     </param>
 115     <param>
 116       <key>value</key>
 117       <value>sample_rate/sym_rate</value>
 118     </param>
 119     <param>
 120       <key>_coordinate</key>
 121       <value>(397, 19)</value>
 122     </param>
 123     <param>
 124       <key>_rotation</key>
 125       <value>0</value>
 126     </param>
 127   </block>
 128   <block>
 129     <key>variable</key>
 130     <param>
 131       <key>id</key>
 132       <value>hs</value>
 133     </param>
 134     <param>
 135       <key>_enabled</key>
 136       <value>True</value>
 137     </param>
 138     <param>
 139       <key>value</key>
 140       <value>int(sps/2.0)</value>
 141     </param>
 142     <param>
 143       <key>_coordinate</key>
 144       <value>(499, 19)</value>
 145     </param>
 146     <param>
 147       <key>_rotation</key>
 148       <value>0</value>
 149     </param>
 150   </block>
 151   <block>
 152     <key>variable</key>
 153     <param>
 154       <key>id</key>
 155       <value>sample_rate</value>
 156     </param>
 157     <param>
 158       <key>_enabled</key>
 159       <value>True</value>
 160     </param>
 161     <param>
 162       <key>value</key>
 163       <value>64e6/decim</value>
 164     </param>
 165     <param>
 166       <key>_coordinate</key>
 167       <value>(198, 17)</value>
 168     </param>
 169     <param>
 170       <key>_rotation</key>
 171       <value>0</value>
 172     </param>
 173   </block>
 174   <block>
 175     <key>variable</key>
 176     <param>
 177       <key>id</key>
 178       <value>max_clock_offset</value>
 179     </param>
 180     <param>
 181       <key>_enabled</key>
 182       <value>True</value>
 183     </param>
 184     <param>
 185       <key>value</key>
 186       <value>0.1</value>
 187     </param>
 188     <param>
 189       <key>_coordinate</key>
 190       <value>(705, 19)</value>
 191     </param>
 192     <param>
 193       <key>_rotation</key>
 194       <value>0</value>
 195     </param>
 196   </block>
 197   <block>
 198     <key>variable</key>
 199     <param>
 200       <key>id</key>
 201       <value>config_filename</value>
 202     </param>
 203     <param>
 204       <key>_enabled</key>
 205       <value>True</value>
 206     </param>
 207     <param>
 208       <key>value</key>
 209       <value>os.environ['HOME']+'/.gnuradio/config.conf'</value>
 210     </param>
 211     <param>
 212       <key>_coordinate</key>
 213       <value>(13, 162)</value>
 214     </param>
 215     <param>
 216       <key>_rotation</key>
 217       <value>0</value>
 218     </param>
 219   </block>
 220   <block>
 221     <key>import</key>
 222     <param>
 223       <key>id</key>
 224       <value>import_0</value>
 225     </param>
 226     <param>
 227       <key>_enabled</key>
 228       <value>True</value>
 229     </param>
 230     <param>
 231       <key>import</key>
 232       <value>import math, os</value>
 233     </param>
 234     <param>
 235       <key>_coordinate</key>
 236       <value>(11, 109)</value>
 237     </param>
 238     <param>
 239       <key>_rotation</key>
 240       <value>0</value>
 241     </param>
 242   </block>
 243   <block>
 244     <key>variable_config</key>
 245     <param>
 246       <key>id</key>
 247       <value>clock_alpha</value>
 248     </param>
 249     <param>
 250       <key>_enabled</key>
 251       <value>True</value>
 252     </param>
 253     <param>
 254       <key>value</key>
 255       <value>0.05</value>
 256     </param>
 257     <param>
 258       <key>type</key>
 259       <value>real</value>
 260     </param>
 261     <param>
 262       <key>config_file</key>
 263       <value>config_filename</value>
 264     </param>
 265     <param>
 266       <key>section</key>
 267       <value>'usrp_rx_hrpt'</value>
 268     </param>
 269     <param>
 270       <key>option</key>
 271       <value>'clock_alpha'</value>
 272     </param>
 273     <param>
 274       <key>writeback</key>
 275       <value>clock_alpha</value>
 276     </param>
 277     <param>
 278       <key>_coordinate</key>
 279       <value>(986, 101)</value>
 280     </param>
 281     <param>
 282       <key>_rotation</key>
 283       <value>0</value>
 284     </param>
 285   </block>
 286   <block>
 287     <key>variable_config</key>
 288     <param>
 289       <key>id</key>
 290       <value>gain</value>
 291     </param>
 292     <param>
 293       <key>_enabled</key>
 294       <value>True</value>
 295     </param>
 296     <param>
 297       <key>value</key>
 298       <value>35</value>
 299     </param>
 300     <param>
 301       <key>type</key>
 302       <value>real</value>
 303     </param>
 304     <param>
 305       <key>config_file</key>
 306       <value>config_filename</value>
 307     </param>
 308     <param>
 309       <key>section</key>
 310       <value>'usrp_rx_hrpt'</value>
 311     </param>
 312     <param>
 313       <key>option</key>
 314       <value>'gain'</value>
 315     </param>
 316     <param>
 317       <key>writeback</key>
 318       <value>gain</value>
 319     </param>
 320     <param>
 321       <key>_coordinate</key>
 322       <value>(668, 101)</value>
 323     </param>
 324     <param>
 325       <key>_rotation</key>
 326       <value>0</value>
 327     </param>
 328   </block>
 329   <block>
 330     <key>variable_config</key>
 331     <param>
 332       <key>id</key>
 333       <value>freq</value>
 334     </param>
 335     <param>
 336       <key>_enabled</key>
 337       <value>True</value>
 338     </param>
 339     <param>
 340       <key>value</key>
 341       <value>1698e6</value>
 342     </param>
 343     <param>
 344       <key>type</key>
 345       <value>real</value>
 346     </param>
 347     <param>
 348       <key>config_file</key>
 349       <value>config_filename</value>
 350     </param>
 351     <param>
 352       <key>section</key>
 353       <value>'usrp_rx_hrpt'</value>
 354     </param>
 355     <param>
 356       <key>option</key>
 357       <value>'freq'</value>
 358     </param>
 359     <param>
 360       <key>writeback</key>
 361       <value>freq</value>
 362     </param>
 363     <param>
 364       <key>_coordinate</key>
 365       <value>(511, 100)</value>
 366     </param>
 367     <param>
 368       <key>_rotation</key>
 369       <value>0</value>
 370     </param>
 371   </block>
 372   <block>
 373     <key>variable_config</key>
 374     <param>
 375       <key>id</key>
 376       <value>decim</value>
 377     </param>
 378     <param>
 379       <key>_enabled</key>
 380       <value>True</value>
 381     </param>
 382     <param>
 383       <key>value</key>
 384       <value>16</value>
 385     </param>
 386     <param>
 387       <key>type</key>
 388       <value>real</value>
 389     </param>
 390     <param>
 391       <key>config_file</key>
 392       <value>config_filename</value>
 393     </param>
 394     <param>
 395       <key>section</key>
 396       <value>'usrp_rx_hrpt'</value>
 397     </param>
 398     <param>
 399       <key>option</key>
 400       <value>'decim'</value>
 401     </param>
 402     <param>
 403       <key>writeback</key>
 404       <value>decim</value>
 405     </param>
 406     <param>
 407       <key>_coordinate</key>
 408       <value>(355, 97)</value>
 409     </param>
 410     <param>
 411       <key>_rotation</key>
 412       <value>0</value>
 413     </param>
 414   </block>
 415   <block>
 416     <key>variable_config</key>
 417     <param>
 418       <key>id</key>
 419       <value>output_filename</value>
 420     </param>
 421     <param>
 422       <key>_enabled</key>
 423       <value>True</value>
 424     </param>
 425     <param>
 426       <key>value</key>
 427       <value>'frames.dat'</value>
 428     </param>
 429     <param>
 430       <key>type</key>
 431       <value>string</value>
 432     </param>
 433     <param>
 434       <key>config_file</key>
 435       <value>config_filename</value>
 436     </param>
 437     <param>
 438       <key>section</key>
 439       <value>'usrp_rx_hrpt'</value>
 440     </param>
 441     <param>
 442       <key>option</key>
 443       <value>'filename'</value>
 444     </param>
 445     <param>
 446       <key>writeback</key>
 447       <value>output_filename</value>
 448     </param>
 449     <param>
 450       <key>_coordinate</key>
 451       <value>(1143, 101)</value>
 452     </param>
 453     <param>
 454       <key>_rotation</key>
 455       <value>0</value>
 456     </param>
 457   </block>
 458   <block>
 459     <key>variable_config</key>
 460     <param>
 461       <key>id</key>
 462       <value>pll_alpha</value>
 463     </param>
 464     <param>
 465       <key>_enabled</key>
 466       <value>True</value>
 467     </param>
 468     <param>
 469       <key>value</key>
 470       <value>0.05</value>
 471     </param>
 472     <param>
 473       <key>type</key>
 474       <value>real</value>
 475     </param>
 476     <param>
 477       <key>config_file</key>
 478       <value>config_filename</value>
 479     </param>
 480     <param>
 481       <key>section</key>
 482       <value>'usrp_rx_hrpt'</value>
 483     </param>
 484     <param>
 485       <key>option</key>
 486       <value>'pll_alpha'</value>
 487     </param>
 488     <param>
 489       <key>writeback</key>
 490       <value>pll_alpha</value>
 491     </param>
 492     <param>
 493       <key>_coordinate</key>
 494       <value>(827, 100)</value>
 495     </param>
 496     <param>
 497       <key>_rotation</key>
 498       <value>0</value>
 499     </param>
 500   </block>
 501   <block>
 502     <key>variable_config</key>
 503     <param>
 504       <key>id</key>
 505       <value>side</value>
 506     </param>
 507     <param>
 508       <key>_enabled</key>
 509       <value>True</value>
 510     </param>
 511     <param>
 512       <key>value</key>
 513       <value>'A'</value>
 514     </param>
 515     <param>
 516       <key>type</key>
 517       <value>string</value>
 518     </param>
 519     <param>
 520       <key>config_file</key>
 521       <value>config_filename</value>
 522     </param>
 523     <param>
 524       <key>section</key>
 525       <value>'usrp_rx_hrpt'</value>
 526     </param>
 527     <param>
 528       <key>option</key>
 529       <value>'side'</value>
 530     </param>
 531     <param>
 532       <key>writeback</key>
 533       <value>side</value>
 534     </param>
 535     <param>
 536       <key>_coordinate</key>
 537       <value>(198, 95)</value>
 538     </param>
 539     <param>
 540       <key>_rotation</key>
 541       <value>0</value>
 542     </param>
 543   </block>
 544   <block>
 545     <key>gr_agc_xx</key>
 546     <param>
 547       <key>id</key>
 548       <value>agc</value>
 549     </param>
 550     <param>
 551       <key>_enabled</key>
 552       <value>True</value>
 553     </param>
 554     <param>
 555       <key>type</key>
 556       <value>complex</value>
 557     </param>
 558     <param>
 559       <key>rate</key>
 560       <value>1e-6</value>
 561     </param>
 562     <param>
 563       <key>reference</key>
 564       <value>1.0</value>
 565     </param>
 566     <param>
 567       <key>gain</key>
 568       <value>1.0</value>
 569     </param>
 570     <param>
 571       <key>max_gain</key>
 572       <value>1.0</value>
 573     </param>
 574     <param>
 575       <key>_coordinate</key>
 576       <value>(339, 434)</value>
 577     </param>
 578     <param>
 579       <key>_rotation</key>
 580       <value>0</value>
 581     </param>
 582   </block>
 583   <block>
 584     <key>usrp_simple_source_x</key>
 585     <param>
 586       <key>id</key>
 587       <value>usrp_source</value>
 588     </param>
 589     <param>
 590       <key>_enabled</key>
 591       <value>True</value>
 592     </param>
 593     <param>
 594       <key>type</key>
 595       <value>complex</value>
 596     </param>
 597     <param>
 598       <key>format</key>
 599       <value></value>
 600     </param>
 601     <param>
 602       <key>which</key>
 603       <value>0</value>
 604     </param>
 605     <param>
 606       <key>decimation</key>
 607       <value>decim</value>
 608     </param>
 609     <param>
 610       <key>frequency</key>
 611       <value>freq</value>
 612     </param>
 613     <param>
 614       <key>lo_offset</key>
 615       <value>float('inf')</value>
 616     </param>
 617     <param>
 618       <key>gain</key>
 619       <value>gain</value>
 620     </param>
 621     <param>
 622       <key>side</key>
 623       <value>side</value>
 624     </param>
 625     <param>
 626       <key>rx_ant</key>
 627       <value>RXA</value>
 628     </param>
 629     <param>
 630       <key>hb_filters</key>
 631       <value></value>
 632     </param>
 633     <param>
 634       <key>_coordinate</key>
 635       <value>(127, 418)</value>
 636     </param>
 637     <param>
 638       <key>_rotation</key>
 639       <value>0</value>
 640     </param>
 641   </block>
 642   <block>
 643     <key>gr_clock_recovery_mm_xx</key>
 644     <param>
 645       <key>id</key>
 646       <value>gr_clock_recovery_mm_xx_0</value>
 647     </param>
 648     <param>
 649       <key>_enabled</key>
 650       <value>True</value>
 651     </param>
 652     <param>
 653       <key>type</key>
 654       <value>float</value>
 655     </param>
 656     <param>
 657       <key>omega</key>
 658       <value>sps/2.0</value>
 659     </param>
 660     <param>
 661       <key>gain_omega</key>
 662       <value>clock_alpha**2/4.0</value>
 663     </param>
 664     <param>
 665       <key>mu</key>
 666       <value>0.5</value>
 667     </param>
 668     <param>
 669       <key>gain_mu</key>
 670       <value>clock_alpha</value>
 671     </param>
 672     <param>
 673       <key>omega_relative_limit</key>
 674       <value>max_clock_offset</value>
 675     </param>
 676     <param>
 677       <key>_coordinate</key>
 678       <value>(920, 426)</value>
 679     </param>
 680     <param>
 681       <key>_rotation</key>
 682       <value>0</value>
 683     </param>
 684   </block>
 685   <block>
 686     <key>gr_moving_average_xx</key>
 687     <param>
 688       <key>id</key>
 689       <value>gr_moving_average_xx_0</value>
 690     </param>
 691     <param>
 692       <key>_enabled</key>
 693       <value>True</value>
 694     </param>
 695     <param>
 696       <key>type</key>
 697       <value>float</value>
 698     </param>
 699     <param>
 700       <key>length</key>
 701       <value>hs</value>
 702     </param>
 703     <param>
 704       <key>scale</key>
 705       <value>1.0/hs</value>
 706     </param>
 707     <param>
 708       <key>max_iter</key>
 709       <value>4000</value>
 710     </param>
 711     <param>
 712       <key>_coordinate</key>
 713       <value>(720, 442)</value>
 714     </param>
 715     <param>
 716       <key>_rotation</key>
 717       <value>0</value>
 718     </param>
 719   </block>
 720   <block>
 721     <key>noaa_hrpt_pll_cf</key>
 722     <param>
 723       <key>id</key>
 724       <value>pll</value>
 725     </param>
 726     <param>
 727       <key>_enabled</key>
 728       <value>True</value>
 729     </param>
 730     <param>
 731       <key>alpha</key>
 732       <value>pll_alpha</value>
 733     </param>
 734     <param>
 735       <key>beta</key>
 736       <value>pll_alpha**2/4.0</value>
 737     </param>
 738     <param>
 739       <key>max_offset</key>
 740       <value>max_carrier_offset</value>
 741     </param>
 742     <param>
 743       <key>_coordinate</key>
 744       <value>(507, 442)</value>
 745     </param>
 746     <param>
 747       <key>_rotation</key>
 748       <value>0</value>
 749     </param>
 750   </block>
 751   <block>
 752     <key>virtual_sink</key>
 753     <param>
 754       <key>id</key>
 755       <value>virtual_sink_0</value>
 756     </param>
 757     <param>
 758       <key>_enabled</key>
 759       <value>True</value>
 760     </param>
 761     <param>
 762       <key>stream_id</key>
 763       <value>baseband</value>
 764     </param>
 765     <param>
 766       <key>_coordinate</key>
 767       <value>(1180, 457)</value>
 768     </param>
 769     <param>
 770       <key>_rotation</key>
 771       <value>0</value>
 772     </param>
 773   </block>
 774   <block>
 775     <key>noaa_hrpt_deframer</key>
 776     <param>
 777       <key>id</key>
 778       <value>deframer</value>
 779     </param>
 780     <param>
 781       <key>_enabled</key>
 782       <value>True</value>
 783     </param>
 784     <param>
 785       <key>_coordinate</key>
 786       <value>(815, 673)</value>
 787     </param>
 788     <param>
 789       <key>_rotation</key>
 790       <value>0</value>
 791     </param>
 792   </block>
 793   <block>
 794     <key>gr_file_sink</key>
 795     <param>
 796       <key>id</key>
 797       <value>frame_sink</value>
 798     </param>
 799     <param>
 800       <key>_enabled</key>
 801       <value>True</value>
 802     </param>
 803     <param>
 804       <key>file</key>
 805       <value>output_filename</value>
 806     </param>
 807     <param>
 808       <key>type</key>
 809       <value>short</value>
 810     </param>
 811     <param>
 812       <key>vlen</key>
 813       <value>1</value>
 814     </param>
 815     <param>
 816       <key>_coordinate</key>
 817       <value>(1026, 722)</value>
 818     </param>
 819     <param>
 820       <key>_rotation</key>
 821       <value>0</value>
 822     </param>
 823   </block>
 824   <block>
 825     <key>noaa_hrpt_bit_sync</key>
 826     <param>
 827       <key>id</key>
 828       <value>noaa_hrpt_bit_sync_0</value>
 829     </param>
 830     <param>
 831       <key>_enabled</key>
 832       <value>True</value>
 833     </param>
 834     <param>
 835       <key>_coordinate</key>
 836       <value>(624, 673)</value>
 837     </param>
 838     <param>
 839       <key>_rotation</key>
 840       <value>0</value>
 841     </param>
 842   </block>
 843   <block>
 844     <key>gr_binary_slicer_fb</key>
 845     <param>
 846       <key>id</key>
 847       <value>gr_binary_slicer_fb_0</value>
 848     </param>
 849     <param>
 850       <key>_enabled</key>
 851       <value>True</value>
 852     </param>
 853     <param>
 854       <key>_coordinate</key>
 855       <value>(446, 673)</value>
 856     </param>
 857     <param>
 858       <key>_rotation</key>
 859       <value>0</value>
 860     </param>
 861   </block>
 862   <block>
 863     <key>virtual_source</key>
 864     <param>
 865       <key>id</key>
 866       <value>virtual_source_0</value>
 867     </param>
 868     <param>
 869       <key>_enabled</key>
 870       <value>True</value>
 871     </param>
 872     <param>
 873       <key>stream_id</key>
 874       <value>baseband</value>
 875     </param>
 876     <param>
 877       <key>_coordinate</key>
 878       <value>(226, 669)</value>
 879     </param>
 880     <param>
 881       <key>_rotation</key>
 882       <value>0</value>
 883     </param>
 884   </block>
 885   <block>
 886     <key>noaa_hrpt_decoder</key>
 887     <param>
 888       <key>id</key>
 889       <value>decoder</value>
 890     </param>
 891     <param>
 892       <key>_enabled</key>
 893       <value>True</value>
 894     </param>
 895     <param>
 896       <key>_coordinate</key>
 897       <value>(1027, 623)</value>
 898     </param>
 899     <param>
 900       <key>_rotation</key>
 901       <value>0</value>
 902     </param>
 903   </block>
 904   <connection>
 905     <source_block_id>usrp_source</source_block_id>
 906     <sink_block_id>agc</sink_block_id>
 907     <source_key>0</source_key>
 908     <sink_key>0</sink_key>
 909   </connection>
 910   <connection>
 911     <source_block_id>agc</source_block_id>
 912     <sink_block_id>pll</sink_block_id>
 913     <source_key>0</source_key>
 914     <sink_key>0</sink_key>
 915   </connection>
 916   <connection>
 917     <source_block_id>pll</source_block_id>
 918     <sink_block_id>gr_moving_average_xx_0</sink_block_id>
 919     <source_key>0</source_key>
 920     <sink_key>0</sink_key>
 921   </connection>
 922   <connection>
 923     <source_block_id>gr_moving_average_xx_0</source_block_id>
 924     <sink_block_id>gr_clock_recovery_mm_xx_0</sink_block_id>
 925     <source_key>0</source_key>
 926     <sink_key>0</sink_key>
 927   </connection>
 928   <connection>
 929     <source_block_id>gr_clock_recovery_mm_xx_0</source_block_id>
 930     <sink_block_id>virtual_sink_0</sink_block_id>
 931     <source_key>0</source_key>
 932     <sink_key>0</sink_key>
 933   </connection>
 934   <connection>
 935     <source_block_id>noaa_hrpt_bit_sync_0</source_block_id>
 936     <sink_block_id>deframer</sink_block_id>
 937     <source_key>0</source_key>
 938     <sink_key>0</sink_key>
 939   </connection>
 940   <connection>
 941     <source_block_id>gr_binary_slicer_fb_0</source_block_id>
 942     <sink_block_id>noaa_hrpt_bit_sync_0</sink_block_id>
 943     <source_key>0</source_key>
 944     <sink_key>0</sink_key>
 945   </connection>
 946   <connection>
 947     <source_block_id>virtual_source_0</source_block_id>
 948     <sink_block_id>gr_binary_slicer_fb_0</sink_block_id>
 949     <source_key>0</source_key>
 950     <sink_key>0</sink_key>
 951   </connection>
 952   <connection>
 953     <source_block_id>deframer</source_block_id>
 954     <sink_block_id>frame_sink</sink_block_id>
 955     <source_key>0</source_key>
 956     <sink_key>0</sink_key>
 957   </connection>
 958   <connection>
 959     <source_block_id>deframer</source_block_id>
 960     <sink_block_id>decoder</sink_block_id>
 961     <source_key>0</source_key>
 962     <sink_key>0</sink_key>
 963   </connection>
 964 </flow_graph>