New project using Daq Assistant or not ?

[CharlyD]

Hi everybody,

I need to create a software to do some realtime acquisition & analysis.

I trained myself a little bit on c# lessons to get use to this programming language; I’m also discovering Measurement Studio & Visual Studio. (I’ve background in C++).

My software will have 2 modes :

1. Continuous acquisition, signal plotting + signal processing & plotting (fft, 1/3 octave band filter)
2. Triggered acquisition, signal plotting + signal processing & plotting (fft, , 1/3 octave band filter)

I have examples in my National Instruments directory which don't use daq Assistant and code is different from generated files with daq Component.

If I use Daq Assistant ( http://www.ni.com/tutorial/4652/en/ )

I know that the code to create channel is stored in DaqTask.cs

Plotting :

NationalInstruments.AnalogWaveform<double>[] acquiredData = daqTaskComponent1.Read();
waveformGraph1.PlotWaveforms(acquiredData);

When I look to examples, like "MStudioVS2010\DotNET\Examples\DAQmxWithUI\SpectrumAnalyzer\cs "

all code to create channel is generated in Mainform.cs, there is no Daq Assistant (http://www.ni.com/tutorial/5409/en/ )

and there is a slight difference between acquired type :

private AnalogWaveform<double> data = new AnalogWaveform<double>(1000);
data = reader.EndReadWaveform(ar);
(…)
acquiredDataWaveformGraph.PlotWaveform(data);

Questions :

What is the difference between AnalogWaveform<double> and AnalogWaveform<double>[] ? why it's not the same type ? I need to do some signal processing with this signal, so what type should I use for my application  ?

I didn't succeed to configure my 2 modes in daq Assistant (continuous and triggered acquisition) is it possible or should I create 2 Items in my solution, one for continuous acquisition and on for triggered acquisition ?

Kind regards,