Inject noise signals to LTP

  
      % Create a noise time-series analysis object to inject
      fs    = 1/ltp.timestep;
      nsecs = 1000;
      noise = ao.randn(nsecs, fs);     
      noise.setName;
      
      % Generate a list of outputs we want from the simulator      
      outputs = ltp.getPortNamesForBlocks(plist('blocks', {'DELAY_IFO', 'IS'}, 'type', 'outputs'));
      
      % Create the plist to configure simulate      
      sim_pl = plist('AOS', noise, 'AOS Variable Names', 'TESTSIGNAL.tm1_x', 'return outputs', outputs)
      
      % Run the simulation      
      out = simulate(ltp, sim_pl);
  

  
      % Create a plist to configure iplot to plot with subplots
      plot_pl = plist('arrangement', 'subplots');
      
      % First extract the internal AOs we want and then plot
      o1  = out.getObjectAtIndex(1);
      o12 = out.getObjectAtIndex(4);
      IS_tm1_x = out.getObjectAtIndex(7);
      IS_tm2_x = out.getObjectAtIndex(13);
      
      % Then plot the IFO and IS signals together
      iplot(o1, o12, plot_pl);
      iplot(IS_tm1_x, IS_tm2_x, plot_pl);