Generate analog values using 6052E and wait for a specific time between each generation:

[Mizar]

Hi Dennis:

If I have to set a certain amplitude for the sine wave, and then run it at different frequencies which of the two should I use.

Sine Pattern. vi

or

Sine wave. vi

I have a DC offset and a certain amplitude for the AC part.  I have to change the frequency of the AC part at that amplitude from 10-1000 Hz.

Thanks,

Mizar.

[Dennis_Knutson]

Sine Wave is probably a bit easier to use.

[Mizar]

Hi Dennis:

I have this setup based on the previous VI.  However, the output only shows the DC offset.  I cannot see the AC component?

Thanks,

Mizar

[Mizar]

Hi Dennis:

Had one more question for you.  As you know, I have PCI6052E with SCB68 running LabView 6.1.  I can generate a square wave, but I need to change the width of the pulse.  Which way do you think I should go?

Thanks,

Mizar.

[Dennis_Knutson]

The f input is not in hz. You can read the on-line help for an explanation. I don't have time right now to do an example. I was searching though the shipping examples and ound one that uses uses Sine Pattern. Open the shipping example called Basic Single Tone Measurements. There is a subVI in there called Create Test Signal. Look how the frequency is set. Do you have the Analyze>Waveform Genration palette. There is a function there called Sine Waveform. You can use this or look at the block diagram to see how the f input is correctly calculated based on sample rate and desired frequency.

[Mizar]

Hi Dennis:

Is the example you had asked me to look at in Labview? I was unable to locate it.

Thanks,

Mizar,

[Dennis_Knutson]

The name in 6.1 is Basic Single Tone Detector Example and from the example finder browse tab is at Analyzing and Processing Signals>Tone Measurements. I had 7.1 open when I gave the name and I don't know if the name changed or if I just typed in wrong. The Sine Waveform function is on the Analyze>Wavefrom Generation palette as I mentioned and I believe it ships with all versions of LabVIEW.

[Mizar]

Hi Dennis:

Thanks a lot for the tip.  I have successfully used the SINE WAVE GENERATOR to cycle different frequencies.  If I need to send a pulse with a variable pulse width how can I go about it?

Thanks,

Mizar

[Dennis_Knutson]

Look at the shipping example called Generate Single Pulse (DAQ-STC). Find Examples>Hardware Input and Output>Counters>DAQ-STC.