Data Acquisition with ADLINK DAQe-2006

3 次查看（过去 30 天）
Yu Ang Tan
Yu Ang Tan 2012-11-27
评论： muhammad choudhry 2021-3-10
Hi MATLAB Community,
I am having difficulty acquiring data with the ADLINK card. This is my setup.
%%Capture a Single Analog Input Signal
ai_device = analoginput('mwadlink', 0)% Opens the analog input functionality
ai0 = addchannel(ai_device, 0)%Add channel #0 to ai_device
ai1 = addchannel(ai_device, 1)%Add channel #1 to ai_device
%%Single Sample
getsample(ai_device)%Read the voltage value on channel #0
The getsample(ai_device) works fine as expected. But when I try continuous sampling:
%%Continuous Sample Setting
set(ai_device, 'SampleRate', 1000)%Set SampleRate to 1000
set(ai_device, 'SamplesPerTrigger', 5000)%Set SamplePerTriger to 1000
start(ai_device) %Start data acquisition
get(ai_device, 'Running')
wait(ai_device, 10)%Wait for data acquisition to complete (wait timeout is 10 seconds)
get(ai_device, 'SamplesAcquired')
[time, ai_data] = getdata(ai_device);%Get the waveformcaptured by ai_device object
The 'SamplesAcquired' property shows 64, and the getdata function returns an empty array.
The 'BufferingMode' is 'Auto' and the 'BufferingConfig is [64 30].
What's wrong?
Side Note: =========== I tried continuous sampling by using getsample function with the following code:
n = 100 d = zeros(n,2); t = zeros(n,1);
tic for i = 1:n t(i) = toc; d(i,:) = getsample(ai_device)%Read the voltage value on channel #0 pause(.001) end
It turns out that the ADLink only returns a sample about every 1.5 seconds. Trying the same code on another DAQ (DT9816-S) returns a sample about every .001 seconds.
  1 个评论
muhammad choudhry
muhammad choudhry 2021-3-10
lolz, after 8 years I am having the same problem. Stupid to ask but still asking haha did you get it sorted ?

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