Channel editing problem at the Data Aquisition Toolbox

Hell I dont understand the failure or the problem at the channel editing. Can someone help me please?

The Failure is shown at the picture and the m.file is shown below.

   ai = daq.createSession('ni');

   ai.Rate = 50000;                    % Abtastrate

   % Initialisierung der 3 analogen Eingänge
   chan1 = addAnalogInputChannel(ai,'Dev6', 'ai0', 'Voltage');
   chan1.DuratioInSeconds = 0.5;       % Messzeit
   chan1.Range = [-0.2,0.2];           % Grenzwerte AD Wandler

   chan2 = addAnalogInputChannel(ai,'Dev6', 'ai1', 'Voltage');
   chan2.DuratioInSeconds = 0.5;       % Messzeit
   chan2.Range = [-0.2,0.2];           % Grenzwerte AD Wandler

   chan3 = addAnalogInputChannel(ai,'Dev6', 'ai2', 'Voltage');
   chan3.DuratioInSeconds = 0.5;       % Messzeit
   chan3.Range = [-0.2,0.2];           % Gr

enzwerte AD Wandler

Answer 1

[Tim Jackman]

When you add an analog input channel using the command addAnalogInputChannel, you create an object for the channel that has specific properties. The properties are listed here:

http://www.mathworks.com/help/daq/ref/addanaloginputchannel.html

Range is a defined property of this object type, but DuratioInSeconds is not. This is why you are getting this error.

Answer 2

[Walter Roberson]

You missed an 'n' in the property name.

http://www.mathworks.com/help/daq/ref/durationinseconds.html