Acquiring Thermocouple Data Real-Time

Hello,

I am trying to acquire thermocouple data (temperature), and save it to a text file while seeing the data in present time and manually stop it whenever I feel like it. I started the code, but have failed and need help.

s = daq.createSession('ni');
addAnalogInputChannel(s,'Dev2',0, 'Thermocouple');
s.Rate = 4;
tc = s.Channels(1);
set(tc);
tc.ThermocoupleType = 'K';
tc.Units = 'Kelvin';

value = input('Press 1 To Start: ');
if value == 1
    s.IsContinuous = true;
else
    error('Try Again')
end

lh= s.addlistener('DataAvailable',@plotData);
startBackground(s);

value = input('Press 0 To End: ');
if value == 0
    stop(s);
    delete(lh)
end


function plotData(src,event)
     hold on 
     plot(event.TimeStamps, event.Data)
 end

Notice that for the plotData function I placed a "hold on" in order to see the entire data for the span of time of acquisition.

Thank You!

[Walter Roberson]

Try adding a marker to the plot