Where would I find Uniform White Noise.vi, Square Wave.vi, and Sine Wave.vi?
I am trying to open the Demo Scope.vi that is located in tutorial.llb that comes with the LabView installation. When I try to open Demo Scope.vi,LabView can not find Uniform White Noise.vi, Square Wave.vi, and Sine Wave.vi that are subVIs that Demo Scope.vi is looking?
Has anyone had similar problems when trying to run Demo Scope.vi through the Getting Started with LabView manual? FYI, I have the LabView Version 6 Base package. Any help on this subject would be greatly appreciated. Thanks in advance.
This issue also is mentioned in KnowledgeBase 21H8J2R2.
In LabVIEW 6.1, the Demo Scope VI referenced in the LabVIEW Getting Started manual only uses VIs available in all LabVIEW development systems, including the base package.
Kelly H
LabVIEW Documentation
National Instruments
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Hello All,
I'm narrowing down on my selection of cameras for my lab.
First there are two cameras from Point Gray which are:
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GRAS-14S3M/C
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And the third camera is from Allied Technology:
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Will these camera run on LABVIEW 8.5/IMAQ-DX?
Your help would be appreciated.
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HumanConditionHi HumanCondition,
I just wanted to let you know that the latest version of our NI Vision Acquisition Software 2010.08 supports LabVIEW 8.5 development. Also, if you are looking for currently supported cameras I would check out our Industrial Camera Advisor. This lists all currently supported cameras. It appears as though we do not currently support the Grasshopper GRAS-14S3M/C or the Prosilica GX1910. We do support the Flea2 FL2-14S3M/C cameras. If the camera that you are needing is currently unsupported, you do have the option of generating a cameras file for that camera using our NI Camera File Generator. This software is free to download on the Overview tab.
Enjoy!
Lynn
National Instruments
Staff Systems Engineer -
Uniform White Noise vi parameters
Hi
What is meant by seed in the Uniform White Noise vi. in labview. What is the effect of sample rate and nuber of samples on the noise waveform and the output power?
Thanks
Malmalkoba wrote:
Hi
What is meant by seed in the Uniform White Noise vi. in labview. What is the effect of sample rate and nuber of samples on the noise waveform and the output power?
Thanks
Mal
The seed is a number sent to the Pseudorandom noise algorithm to start its sequence. If left blank a "random" number is generated and sent to start the prn generator. On subsequent calls to the Uniform White Noise Generator it continues the previous sequence (it is pseudorandom after all). I'm not seeing a sample rate on my version (7.1) only sample number. The default for sample number is 128, which is a power of two, something that FFT's etc. are happier with than non powers of two. As far as the effect on the noise waveform, it just defines the length up to max memory or 2^31-1. What do you mean output power? For white noise you would have to define a bandwidth in which you were measuring the noise and then average over a long time. Try putting together a simple experiment and seeing what effects changing the values has. You don't have the base package, if you have the Uniform White Noise vi, so you probably have the Power spectrum vi, etc. Wire the UWN into a power spectrum, then drop a waveform graph on the front panel and look at the resulting spectra.
P.M.
Putnam
Certified LabVIEW Developer
Senior Test Engineer
Currently using LV 6.1-LabVIEW 2012, RT8.5
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