Histogram of Gaussian White Noise with NI5112

I am digitizing some random gaussian white noise with a NI-PXI 5112. The problem is that even with very high number of samples (1 Mega sample) the distribution presents a lot of periodic pikes when making a voltage histogram (either with built in function or by postprocessing data with Mathematica).
I am using two synchronized digitizers and they both have the same behaviour (pikes symmetric around 0 and with periodicity), but give different response from one another.
I already tried to filter the data, change the vertical range of both aquisition and generation devices, but the pikes always appear at the same relative values, and with the same relative number of counts.
How can I overcome this problem ?

Could you post a screenshot of your histogram? How many bins do you have in your histogram?
Remember that the 5112 is an 8-bit boards so you only have (in the order of) 256 possible values so unless you 'hit' the exact values your bins will have un-equal weights. This could result in the periodic behavior you are observing.

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Hi Kevin,
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If a guy from NI reads this message: It would be helpful anyway, if the state of the random generator would be returned by the VI "Gaussian White Noise.vi". Think about an extensive simulation with a many iterations and after a certain time, an interesting result occurs. If one wants to reinvestigate this interesting result, one has the re-run the complete simulation until one gets to the time instant where the result occurs. If the state of the random generator would be availabe, one could save this state in each iteration and re-running the complete simulation would not be neccessary anymore. One would reload the state of the generator for the interesting iteration and would have to re-run a singe iteration. Would be much faster.
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How to add gaussian white noise to array of one's and negative one's ?

how to add gaussian white noise to array of one's and negative one's ?
Solved!
Go to Solution.

Is it this that your are trying to accomplish:
TO:
Here's the code to do that.
Michel

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I experience the same with an MBox.
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A

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http://en.wikipedia.org/wiki/DBm
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does this silence in suppport means that there is no solution ?

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Well, that was 15 minutes of life wasted typing out the above post that I'll never get back
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This at least makes me slightly more confident that this is a software/firmware glitch, rather than a hardware fault.
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I downloaded ios7 on my iphone 5 yesterday. All day it worked fine, then last evening it started blinking from the white screen with the black apple to my home screen. Each screen only stays up for 3-5 seconds then switches back. I have tried shutting down and it is still happening! Does anyone know how to fix this issue without having to go into the store?

Your power adapter is OK. If the only place it will not work is in your home, your house wiring and / or the appliances connected to it are likely to be the reason your Mac will not charge.
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Identify line noise issues.
Unplug the power adapter from the wall, let it sit for 60 seconds, then plug the adapter back in.
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Got a iMac upon start up it has white screen with apple logo and loading wheel spinning forever under it, does anybody know how to fix this?

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White Noise showing up in images after PDF Creation

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The current job is 190 pages plus cover that will be perfect bound. The client, nor I can make one large PDF from this job so we have to break it up into sections. Usually each of the PDF sections has around 20-50 pages per.
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Here are two pictures of pages from separate jobs and a close up on what's going on. **Second image was from a 32 page plus cover document we have already printed.
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That one has come up every now and then and has always been hardware as far as I know.... bad ram, bad cable, bad drive, bad network maybe even bad video card (?).
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Histogram of Gaussian White Noise with NI5112

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