I want to apply single square or sine wave

Now I used NI-FGEN and NI-Scope for bender element test, I want to know how to generate single sine or square wave for input wave by using NI-GEN and how to recieve the sigle wave by NI-Scope(normally in NI-FGEN, I saw only continuous wave generation type).Is it possible to solve this problem by using only NI-FGEN and NI-Scope only ? (without LABVIEW). Thanks you so much

Hi,
Thanks for contacting National Instruments. The NI-FGEN and NI-SCOPE drivers do not only have to be programmed using LabVIEW. They can also be programmed using CVI, C, and Visual Basic.
If you don't want to do any programming and would rather just generate and acquire waveforms with basic functionality you can use the soft front panels (SFP). There is a NI-SCOPE SFP and a NI-FGEN SFP. These can be found by going to Start >> Programs >> National Instruments and choosing NI-SCOPE or NI-FGEN. You will see the SFPs in these directories. NI-FGEN SFP will allow you to generate both square and sine waves at different frequencies and amplitudes. NI-SCOPE will allow you to read in waveforms at various sampling rates.
Hope this helps!
Erick D
Appl
ications Engineer
National Instruments

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How can I get stable Sin wave through NI 9264 ?

Dear all,
I would like to generate 64 analog sin wave with frequency up to 20K Hz.
Then I bought 4 NI9264:
25 kS/s/ch simultaneous output
Hot-swappable operation
Spring terminal or D-SUB connectivity options
250 Vrms isolation (spring terminal version)
60 VDC isolation (D-SUB version)
.The attached is my file for the generation. when I used Osciloscope to monitor the output, I could not get any stable output.
Could I have the reasons and suggestions for my objective please?
Thanks!
Zhu_nuo
Attachments:
64 Channel Programmatic v2.vi ‏22 KB

Hi Zhuming,
The VI above only provides waveform information for a single channel. In order to output data across all 64 channels in the task, we can make use of a For Loop to build an array of waveform information for each channel. In the example below, I've made use of an Auto-Indexing For Loop in order to build up a waveform output array of 64 elements. I've wired this to an NI-DAQmx Analog 1D Wfm Write VI; the 1D array's elements represents each channel in the group of selected channels for generation.
An important thing to note is that the NI 9264 16 channel analogue output modules have a maximum sample rate of 25 kS/s/ch. This means that each channel is capable of writing 25kS/s simultaneously.
To reliably generate a signal, we generally need to have it comprised of around 5 to 10 points of data. This allows us to represent the signal to a good degree of accuracy. For example, if I wanted to reliably output a 1Hz Sine Wave, I would need to break the 1Hz wave into ten separate points and then output them at a rate of 10Hz. In terms of the NI 9264, the maximum frequency content (Two points of information) that can be generated is 25kHz/2 = 12.5kHz wave. The maximum clear wave frequency that we could produce with the 9264 (A wave built up of ten points) is 2.5kHz simultaneously across each channel. This is all to do with Nyquist's Theorem. This should explain why the frequency appeared to drop.
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Kind Regards,
Alex Thomas, University of Manchester School of EEE LabVIEW Ambassador (CLAD)

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Hi
I'm new to Labview and I want to generate n number of sine waves and add them together to form one signal that can be out put through a DAQ card. Each successive wave frequency will be the multiple of a base wave all will be the same amplitude.
This to me suggested a For loop with a sig generator and a passback in it but when I tried this it threw an error because the dt were different.
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Show us what you did.
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Hi all,
I ve got a small problem.I want to multiply 2 sine waves in the following manner:
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Your query is somewhat confusing. You talk about multiplying sine waves and then you talk about amplitudes and differences and slopes. Then you ignore the negative slopes but want the result to be a sine wave.
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How to apply single sine or square wave

Now I used NI-FGEN and NI-Scope for bender element test, I want to now how to generate single sine or square wave (normally in NI-FGEN, I saw only continuous wave generation type).thanks you so much

If I understand your question correctly, it sounds like you would like to output one period of a sine wave or square wave and then just 0V DC. To do this you can use the niFgen_Basic_Arb_Sequence_Example. You will want your first sequence to be a sine (or square) wave and then the second sequence to be DC with an amplitude of 0V. You could replace the while loop in that example with a sequence structure with a wait in the structure to last just a bit longer than your sine wave. This will ensure that your sequence doesn't repeat.
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Regards,
Doug K.
Application Engineering
National Instruments

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Hello,
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interface is not a method. It has its own definition and you can refer to here:
http://msdn.microsoft.com/en-us/library/87d83y5b.aspx
Any from your question I think you may still confused about the usage of interface. In this way, I will recommend you have a look at the following blog:
http://www.codeproject.com/Articles/18743/Interfaces-in-C-For-Beginners
"Interfaces in C # provide a way to achieve runtime polymorphism. Using interfaces we can invoke functions from different classes through the same Interface reference, whereas using virtual functions we can invoke functions from different classes in
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"How do I generate a sequence of waveforms, like first a sine wave, then a square one, and say again a sine wave?"

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sanghi wrote:
OK I WANT TO DRIVE A RELAY.
SUGGEST SOMETHING
Calm down!
People can't read your mind. If you want help, repsect those who contribute their time for free to try to help you.
Put yourself in our shoes. If I tell you I want to build a rocket, what information would you give me? You would need to know if it's for a hobby, something bigger, carries a payload, carries living organism, how far does it go, where does it land (if at all), etc...
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Hello,
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I am also having this issue and have not been able to find a solution in the forums. I am somewhat of a rookie so pardon me if I seem ignorant in any way. I am working on a graduate project where I need to produce some sine waves and I am getting more of a square wave when I output it and measure on the scope. The program I am running is quite simple at the moment to attempt to discover any errors by process of elimination. I have the sine wave generator in a while loop outputting to an AO port. I am using the cRIO 9022 with the 9269 AO module. I will attach screen shots of my code and my oscope image
Attachments:
sine wave.jpg ‏76 KB
code for project.PNG ‏169 KB

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I want to apply single square or sine wave

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