How to connect Tektronix Oscilloscope TDS 224 to Matlab 2012b?

I am trying to connect the oscilloscope so I can capture the waveform to the computer. Here is what I have so far.

function [s] = ConnectScope () % Disconnect and close all RS232 connections, to ensure proper % reconnections TEMP = instrfind; if ~isempty(TEMP) fclose(TEMP); delete(TEMP); clear TEMP; end

    % set serial USB connection of COM3 to variable 'oscope'
    % go into control panel of PC and find the right COM to connect
    s = serial('COM5'); 

    % Set buffer size and timeout
    set(s,'BaudRate',9600,'DataBits',8,'Parity','none','StopBits',1);
    set(s,'InputBufferSize',1024,'Terminator','LF','Timeout',30);
    set(s,'ReadAsyncMode','continuous');

    if strcmp(s.status,'closed') %%&& strcmp(SCOPE_address.PinStatus.CarrierDetect,'on')
       fopen(s);
    end

    if strcmp(s.status,'open') && strcmp(s.PinStatus.CarrierDetect,'on')

        % Reset system and clear error register
        fprintf(s,'*RST');
        fprintf(s,'*CLS');

        % Wait for reset to complete
        fprintf(s,'*OPC?');
        status1 = fscanf(s);

        % Set channel parameters
        fprintf(s,'Display:Contrast 30');
        fprintf(s,'SEL:CH1 ON'); % channel 1 on
        fprintf(s,'SEL:CH2 ON'); % channel 2 on
        fprintf(s,'SEL:CH3 ON'); % channel 3 on 
        fprintf(s,'SEL:CH4 OFF'); % channel 4 off
        fprintf(s,'CH3:PROB 1'); 
        fprintf(s,'CH2:PROB 10');
        fprintf(s,'CH1:PROB 10');
        fprintf(s,'CH4:PROB 1');
        fprintf(s,'CH3:COUP AC');
        fprintf(s,'CH2:COUP AC');
        fprintf(s,'CH1:COUP DC'); 
        fprintf(s,'CH4:COUP AC');
        fprintf(s,'ACQ:MOD AVE');
        fprintf(s,'ACQ:NUMAV 4');
        fprintf(s,'MEASUREMENT:MEAS1:TYPE PK2PK; SOURCE CH3;');
        fprintf(s,'MEASUREMENT:MEAS2:TYPE PK2PK; SOURCE CH2;');
        fprintf(s,'MEASUREMENT:MEAS3:TYPE MEAN; SOURCE CH1;');
        fprintf(s,'MEASUREMENT:MEAS4:TYPE FREQUENCY; SOURCE CH3;');
        fprintf(s,'*IDN?');

        % Set trigger parameters
        fprintf(s,'TRIG:MAI:EDGE:SOU CH4'); 
        fprintf(s,'TRIG:MAI:EDGE:COUP AC');
        fprintf(s,'TRIG:MAI:LEV 0');
%        
        %%Check for errors
        fprintf(s,'*ESR?');

         %%gives each line more time to load properly 'experimental'
        status2 = fscanf(s);
        fprintf(s,'ALLE?');
        status3 = fscanf(s);
        display(['SCOPE error message: ', status3])

        fread(s)

    else
        fclose(s);
        delete(s);
        clear scope;
        s = 'error';
        display('SCOPE error message: hardware not found')
    end

    end

I get error like:

Warning: Unsuccessful read: A timeout occurred before the Terminator was reached.