Changing Input Sampling Resolution

I am using a PCI-6221 DAQ card for sampling an input signal. This card provides 16 bits of resolution. I'd like to simulate a 12-bit and 10-bit D/A converter, so I'm looking for a way to change the resolution to 10 and 12 bits. Is it possible to configure the DAQ card to use these resolutions? Or do I need to sample at 16 bits and then change to data to simulate 10 and 12 bits?
If it's not possible to configure to use 10 or 12 bits, is there a VI I can use to simulate 16 to 12 and 10 bit conversions?
Thanks.

Hi,
I think you first need to understand the meaning of resolution. Typically, two limits, upper and lower limit will be set by the software. if lets say you have +/- 10V and 16 bits resolution, your stepsize is 20V divided by 2^16, which is 3x10^(-4). thats the smallest difference or delta you be able to see btwn two signals. if you use say a resolution of 10 bits, you get something like 2^10(-2). Since you are only doing a simulation, why not write your own conversion VI using these principles.
Goy

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How to change external display resolution WITHOUT clicking "CONFIRM"?

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Fateh wrote:
I hope that my question is clear ... Nope.
How to change the display resolution of APEX ??APEX doesn't have a display resolution. "Display resolution" is an attribute of the device and user agent software used to view the APEX page.
What do you mean by "the display resolution of APEX"?
In other word, if an end user sees large elements on a pageWhat "large elements"?
then he/she zooms it outHow?
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How can I set a proper ZOOM for my app by default ...Meaning what?
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<li>Full DB/version/edition/host OS
<li>Web server architecture (EPG, OHS or APEX listener/host OS)
<li>Browser(s) and version(s) used
<li>Theme
<li>Template(s)
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You've been posting here for years. You know this basic information is necessary to understand and reproduce problems.
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Gain changes on sample rate change

I wrote an application with 2 channel analog input with different gains. If I change the sample frequency the gain setting seems to mix up. But the sample frequencies work if used as first. So, only after changing the sampling frequency the gains are mixed and could not be 'reset' by calling Scan_Setup() from NIDAQ library again.
Any ideas?

Hello,
So it seems that changing the sampling frequency is affecting the gain of a channel?
I am not that sure what is causing this behavior, if you could answer the following questions, we could begin to figure this one out.
1.) How do we know that the gains are mixed up? Is one signal significantly larger then before? Is the code width decreased?
2.) Are you trying to change the sampling rate during acquisition? Are you running the acquisition to the end, then calling Scan_Setup again?
3.) Do you get this error if you call DAQ_Clear before reconfiguring the sampling rate?
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Best regards,
Jus
tin T.
National Instruments

Is there a way to change the true resolution rather than scaling?

Hi,
I have searched through just about every single forum, website and search engine there is and haven't found anything. Perhaps I am phrasing my question wrong. I currently own a Macbook Pro 13.3'' Retina (Of Mid-2014 since I just bought it?) and I can't figure out how to change the resolution. The OS seems to default to 2560x1600 no matter what I set it to because I think all its changing is the scaling. Is there a way to do this? I used to own a Macbook Air 13.3'' which ran 1440x900 and I know that it was pixelated. On the same size display here...when I run the claimed "1440x900" its still ultra sharp which means its using scaling I assume. Any ideas how do I change the actual resolution, not just the scaling. The OSX settings currently seem to be just the equivalent of modifying the DPI like you can in Windows. I want to find out if there is a way to change the actual output resolution.

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Apparently the display is required to be HDCP compatible to view HD movies in iTunes. My display isn't so this is my problem. I contacted Apple support and they have agreed to credit me for the HD movie and I have now downloaded the SD version.

How do I change the image resolution of a photo?

Hi..,
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Viswa,
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-ST

I just bought a new PC and I have re-installed my Adobe Creative Suite Standard on it. Software open fine. PROBLEM: The toolbars (menu stuff) appear extra-small, too small for me to read... I sent on the PC setting to try to change the display resolution.

I just bought a new PC and I have re-installed my Adobe Creative Suite Standard on it.
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Anything before CC is not high-DPI compatible. Feel free to continue to experiment with your system settings.
Mylenium

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Is there any way to change the screen resolution in Front Row?

Hi all,
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Andy
Message was edited by: Andy__D

Safe Boot from the HD, (holding Shift key down at bootup), set a good rez there.

How to change the screen resolution

Dear All,
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This site has some instructions on how to do this: http://solaris-x86.org/documents/tutorials/cde.mhtml

I updated to iTunes 11 on my Windows PC. Since the update, when I open iTunes its window is too large for my screen. Resizing is a pain, because I have to change my screen resolution. And when I restart iTunes,it has reverted back to being too large.Help!

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Having the same issue here....a quick fix is to just minimize the window, and immediately maximize it. It will now fit the screen. Trouble is, after you close it, you'll have to do it again when you re-start itunes. The good news is it takes all of about 2 seconds. Apple should fix this. Should.

[SOLVED] I want to change my tty resolution

Just that, I want to change my console resolution (NOT the font size) cause it doesn't use my whole screen.
I've reading about KMS and i know there's incomplete documentation. I understand this
https://wiki.archlinux.org/index.php/KMS wrote:
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Last edited by dgarcia (2011-05-22 19:37:36)

If you are using an open-source driver(e.g. nouveau) you should have a good tty resolution out of the box, if not, you can do this (i use this for my tty resolution):
pacman -S v86d
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nano /etc/modprobe.f/uvesafb.conf
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nano /etc/mkinitcpio.conf
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More information here:
https://wiki.archlinux.org/index.php/Uvesafb

How to force digital input sample rate?

Does anyone know how to force a Digital Input sample rate and/or tell Core Audio which conversion clock to use... internal or external? Apparently both things can be done from Pro Tools, but I don't have it. My problem is locking onto an A/D converter's 48K Toslink output. I can set 48K in 'Audio - Midi' setup and the audio is perfect, but a few seconds later Core Audio returns to the default 44.1K. I need to force it to stay at 48K, or clock on the signal rather than internal clock.

Braver,
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Knowlege Base
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How is this even possible? Opening DW changes desktop screen resolution

All of a sudden, whenever I open DW (from taskbar or start
menu) it manages to change my screen resolution from high to very
low (like from 1280x800 to 600x800). No other app causes this. Once
DW is open I can then change the screen res, but reinstalling
hasn't solved the problem and I can't figure out how or why this is
happening.
Thanks.

I've been posting here since DW2, and I have never seen your
problem posted
once. I can't imagine what might be causing this, but I'd
take a hard look
at your other apps running in the background.
Murray --- ICQ 71997575
Adobe Community Expert
(If you *MUST* email me, don't LAUGH when you do so!)
==================
http://www.projectseven.com/go
- DW FAQs, Tutorials & Resources
http://www.dwfaq.com - DW FAQs,
Tutorials & Resources
==================
"egrolman" <[email protected]> wrote in
message
news:gnq4mi$t7h$[email protected]..
> All of a sudden, whenever I open DW (from taskbar or
start menu) it
> manages to
> change my screen resolution from high to very low (like
from 1280x800 to
> 600x800). No other app causes this. Once DW is open I
can then change the
> screen res, but reinstalling hasn't solved the problem
and I can't figure
> out
> how or why this is happening.
> Thanks.
>

IPhone: AudioQueue - is it possible to change the sample rate?

I've been playing around with the AudioQueue stuff for a few days and it's all working fine.
I was trying to build a low-latency playback system by making the streaming buffers the same size as the audio file and pre-loading the buffers (which works fine) but I've hit a snag.
I've been trying to get the streaming to work at different sample rates so that I can play back the same sample at different pitches. I managed to do it by modifying the sample rate in the AudioStreamBasicDescription structure but in order to actually make the stream playback at the new rate it seems you have to create a new output, reload the audio file into the buffers and re-enqueue the output queue before starting playback again, otherwise the sample rate change has no effect.
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Dan,
there is one point in your understanding, which i am not sure what you think about when talking about it: I understand E-series devices do not support this property change while the VI is running.
infact, you cannot change the sample clock rate during acquisition. but
this does not mean that you cannot change it while the VI is running.
you have only to interrupt the acquisition. since you want to acquire
continuous, this would have the same effect as stopping the vi, i asume.
so the best way to accomplish this task is to use an external clock.
this is e.g. often used for acquistion on rotating shafts. the
acquistionrate is always e.g. 24 points per revolution regardless of
the rotational speed of the shaft, except for a maximum frequency of
course.
Norbert B.
NI - Germany
Message Edited by Norbert B on 09-14-2005 04:16 AM
CEO: What exactly is stopping us from doing this?
Expert: Geometry
Marketing Manager: Just ignore it.

Changing Input Sampling Resolution

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