Thread Subject: Problem doing readwaveform on channel 3&4 on Tek TDS 2024

Hi Byron,

I took a quick look at the issue you asked me about on channels 3 and 4 on
the tektronix 2024 driver. I'm not quite sure what the customer was doing,
but took a "wild stab" that it would be readwaveform. And, I can see a bug
that would prevent you from getting to channel 3 and 4.

I'm presuming that the following code would have shown the customer's issue:

instrreset

% Create a SERIAL object.
interfaceObj = serial('COM1');

% Create a device object.
deviceObj = icdevice('tektronix_tds2024.mdd', interfaceObj);

% Connect device object to hardware.
connect(deviceObj);

% Execute device object function(s).
groupObj = get(deviceObj, 'Waveform');
groupObj = groupObj(1);
y = invoke(groupObj, 'readwaveform', 'channel3');

Error using ==> icgroup.invoke at 90
Invalid SOURCE. CHANNEL must be one of: channel1, channel2, channel3,
channel4, referenceA, referenceB, referenceC, referenceD, math

It's a bug in the driver, logged as 390970:
http://komodo.mathworks.com/main/gecko/view?Record=390970

I believe I have a fix -- you can get an updated driver at
\\mathworks\public\Rob_Purser\ict\tektronix_tds2024.mdd

If you could send this to the customer, and have them back up and replace
the one that is at
$MATLABROOT\toolbox\instrument\instrument\driver
that would be great. Let us know if it fixes the problem.

-Rob