How can I generate Gaussian pulse using DAQ-6036E, BNC-2110 on Laview 7.1?

[honam]

Hi everyone

I am trying to use the vi as follows:

Sample Finder>Hardware input output>>DAQmx>Generate Digital Pulse Signal (Counter output)> Gen Dig Pulse Train-Continuous.vi

From the beginning of this work, I have problem. When I execute the vi, I got error message. The message says that the physical channel specified does not exist on this device. Maybe, I have to indentify the physical channel. How can I do this?

Could you let me know overall step after setting the physical channel,  that I have to take to get the Gaussian?

ps: I just start learning Labview, so, my question is too broad, not clear. Sorry

Thank you

[Elizabeth_S]

Hi Honam,

Please check that you are able to see your PCI-6036E in Measurement and Automation Explorer under Devices and Interfaces >> DAQmx Devices.  If you are able to see the device, then you should see a device number next to the name (ie: NI-PCI 6036E: "Dev1").  On the Front Panel of the example, please select the appropriate device number from the Counters drop down window.  You should now be able to run the example. 

[honam]

I am using DAQ 6036E on my laptop. After installing NI-DAQ 7 CD1, I can see the DAQcard-6036E(Device1) under Traditional NI-DAQ devices of Devices and interface in Measurement and Automation. I cann't see NI-DAQmx under Devices and interface. I tried to install NI-DAQmx several times, but failed.

I think that NI-DAQmx shows up to start the procedure that you said.

Do both NI-DAQmx and Traditional NI-DAQ support DAQcard-6036E?

How can I install the NI-DAQmx?

Thanks

[Elizabeth_S]

Hi Honam,

This example uses the DAQmx driver.  I would recommend disconnecting the hardware and installing the newest driver version from the link below:

DAQmx 8.6

http://joule.ni.com/nidu/cds/view/p/id/833/lang/en

Then connect the DAQCard-6036E and check to see if shows up in MAX under DAQmx Devices.

[honam]

Thanks, Elizabeth

I installed the driver. I am using SignalExpress 2.5 to generate Gaussian pulse.

The pulse that I need is attached. The time width is t0=2sec and the center of the gassian is 5 second.

The period(the triggering rate) is 25s(1/25Hz).

I am using the menus,  Add step>>Create signals>> Create analog signal and Add step>>Generate signals>>Analog output>>voltage.

I typed exp(-(t-5).^2/t0) in the formula blank under the Create analog signal, and gave external triggering under Analog output.

But the pulse was not generated. Please let me know whether the SignalExpress 2.5 can be used for generating the Gaussian pulse or not. If it does, could you please let me know the procedure? 

[Alex A.]

I took a look at the following that is from the Signal Express help file along with your equation.  You may not be able to make a guassian signal based on your equation that has t0.  The following details which variables you can use to define your signal. 

Formula

You can use the following defined variable names:

• f—Frequency equal to the Frequency (Hz) input.
• a—Amplitude equal to the Amplitude (V) input.
• w—2*pi*f.
• n—Current number of samples generated.
• t—Number of elapsed seconds.
• fs—Sampling frequency equal to Sample rate (S/s).