Synchronized AI and AO on PCI-6052E

Hi,
I need to acquire data on analog i/p channels and send out a TTL pulse on the analog o/p channel simlutaneously,both based on a trigger on PFI0 pin .I could create a vi that does only triggered AI and a seperate vi that does triggered AO.But when I try to combine the AI and AO in to a single vi it doesn't work.
The program consists of a simple while loop with AI and AO functionalities.AO config and AI config are outside the while loop.I have attached the vis.
Quick response is highly appreciated!
Thanks,
Shiv
Attachments:
ai_ao_good_fw1.vi ‏153 KB
adc_good_fw7.vi ‏107 KB
dac_good.vi ‏79 KB

I had a similar problem with a 6034E: generate a ramp pattern while reading some analogue channels.
I found in the Resource Library (how is it called now??) the zip file attached, with some examples of simultaneous input and output.
The solution I adopted, summarized in the skeleton VI also attached, is conceptually this one:
- setup your AO to start on AI start; write your waveform to output an execute AO Start.vi
- setup your AI to start as you need it (in your case, with a digital slope in PFI0); execute AI Start.vi
- when the edge is seen in PFI0, both AI and AO starts simultaneously.
Hope this helps
Roberto
Proud to use LW/CVI from 3.1 on.
My contributions to the Developer Zone Community
If I have helped you, why not giving me a kudos?
Attachments:
SimAI_AO.zip ‏140 KB
AI_and_AO.vi ‏64 KB

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PCI-6052E, C-file Programming, DAQ_Rate

I am trying to write a simple c-file to collect some data with my PCI-6052E
Card. The card should be able to handle a sample rate of 333kHz, but I am
finding even if I ask for all sixteen channels at 10KHz using the DAQ_Rate
function, I get an error with the time on SCAN_Start.
The folloing code snip-it generates the error:
<< Snip it>>
f64 dSampRate = 10000.0;
f64 dScanRate = 10000.0;
i16 iUnits = 0;
iStatus = DAQ_Rate(dSampRate, iUnits, &iSampTB, &uSampInt);
iStatus = DAQ_Rate(dScanRate, iUnits, &iScanTB, &uScanInt);
iStatus = SCAN_Start(iDevice, DataBuffer, ulCount, iSampTB, uSampInt,
iScanTB, uScanInt);
printf(" \tiSampTB =%d\n",iSampTB);
printf(" \tuSampInt =%d\n",uSampInt);
printf(" \tiScanTB =%d\n",iScanTB);
printf(" \tuScanInt =%d\n",uSscanInt);
<< Output >>
iSampTB = 1
uSampInt = 100
iScanTB = 1
uSscanInt = 100
Error: -10092
Some devices require a time gap between the last sample in a scan and the
start of the next scan. The scan interval you have specified does not
provide a large enough gap fo rthe board. See your documentation for an
explanation.
But if I use the following code I do not get an error:
<< Snip it>>
f64 dSampRate = 10000.0;
f64 dScanRate = 10000.0;
i16 iUnits = 0;
iStatus = DAQ_Rate(dSampRate, iUnits, &iSampTB, &uSampInt);
iStatus = DAQ_Rate(dScanRate, iUnits, &iScanTB, &uScanInt);
iStatus = SCAN_Start(iDevice, DataBuffer, ulCount, iSampTB, uSampInt,
iScanTB, 0);
printf(" \tiSampTB =%d\n",iSampTB);
printf(" \tuSampInt =%d\n",uSampInt);
printf(" \tiScanTB =%d\n",iScanTB);
printf(" \tuScanInt =%d\n",uSscanInt);
Could anyone point me in the correct direction?
Please reply directly to
tgaudett@n
mr.mgh.harvard.edu
Thanks in advance,
Tom

Thomas:
The second case works because you are disabling the scan clock, thus making
the acquisition "round robin" based on the sample clock.
If you want to make the first case work with 16 channels, I suggest you
change the dScanRate to this:
> f64 dSampRate = 10000.0;
> f64 dScanRate = 10000.0 /(16+1);
The +1 is just to offer a buffer time.
However, this means that your effective sample rate per channel (aka
dScanRate) is now 10000/17. Is that ok?
If you want the effective sample rate per channel (dScanRate) to be 10kHz,
then you need to bump up dSampRate to 10000 * 16 (=160000, which is
achievable on this device) or greater so that the A/D converter has enough
time to go thru all the 16 channels and still make the dScanRate.
I hope this helps.
| Ken Sadahiro ([email protected])
| Sr. Software Engineer, User Advocate
| Systems & Architectures: Applications Group
+----+-------------------------------------------
| National Instruments Corporation
| 11500-A North MoPac Expressway
| Austin, Texas 78759-3504 USA
| Tel: +1.512.683.8806
| Fax: +1.512.683.8641
| URL: http://www.ni.com/
Thomas Gaudette wrote in message
news:[email protected]...
> I am trying to write a simple c-file to collect some data with my
PCI-6052E
> Card. The card should be able to handle a sample rate of 333kHz, but I am
> finding even if I ask for all sixteen channels at 10KHz using the DAQ_Rate
> function, I get an error with the time on SCAN_Start.
>
> The folloing code snip-it generates the error:
> << Snip it>>
> f64 dSampRate = 10000.0;
> f64 dScanRate = 10000.0;
> i16 iUnits = 0;
>
> iStatus = DAQ_Rate(dSampRate, iUnits, &iSampTB, &uSampInt);
> iStatus = DAQ_Rate(dScanRate, iUnits, &iScanTB, &uScanInt);
>
> iStatus = SCAN_Start(iDevice, DataBuffer, ulCount, iSampTB, uSampInt,
> iScanTB, uScanInt);
>
> printf(" \tiSampTB =%d\n",iSampTB);
> printf(" \tuSampInt =%d\n",uSampInt);
> printf(" \tiScanTB =%d\n",iScanTB);
> printf(" \tuScanInt =%d\n",uSscanInt);
>
> << Output >>
>
> iSampTB = 1
> uSampInt = 100
> iScanTB = 1
> uSscanInt = 100
>
> Error: -10092
> Some devices require a time gap between the last sample in a scan and the
> start of the next scan. The scan interval you have specified does not
> provide a large enough gap fo rthe board. See your documentation for an
> explanation.
>
> But if I use the following code I do not get an error:
> << Snip it>>
> f64 dSampRate = 10000.0;
> f64 dScanRate = 10000.0;
> i16 iUnits = 0;
>
> iStatus = DAQ_Rate(dSampRate, iUnits, &iSampTB, &uSampInt);
> iStatus = DAQ_Rate(dScanRate, iUnits, &iScanTB, &uScanInt);
>
> iStatus = SCAN_Start(iDevice, DataBuffer, ulCount, iSampTB, uSampInt,
> iScanTB, 0);
>
> printf(" \tiSampTB =%d\n",iSampTB);
> printf(" \tuSampInt =%d\n",uSampInt);
> printf(" \tiScanTB =%d\n",iScanTB);
> printf(" \tuScanInt =%d\n",uSscanInt);
>
>
> Could anyone point me in the correct direction?
> Please reply directly to
> [email protected]
>
>
> Thanks in advance,
>
> Tom
>
>

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Hi PCI Card Problems,
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What do you mean when you say : "The driver is 1.8.2.f0 "?
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National Instruments France
Sanaa T.
National Instruments France
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Thanks,
Gen

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http://zone.ni.com/devzone/conceptd.nsf/webmain/2A03115556FB233386256870005BB522?opendocument
If the link above does not work, go to
www.ni.com/support
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I am planning a QNX or Linux driver that will DMA from a PCI-6052E.
In the readme at
ftp://ftp.ni.com/support/daq/linux/Readme
snip ..
* DMA is not supported at this time. Doing DMA would require
programming the mMITE chip on NI's CPCI/PCI/PXI cards, and as of now
that information is only available under NDA, thus precluding an
open-source release. Feedback on this issue is appreciated.
snip ..
Is this readme up to date? I do need the DMA, and was hoping to get the
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cheers -- Rick
Rick Leir
Pelyco Systems
rleir at pelyco dot ca replace at and dot
Sent via Deja.com http://www.deja.com/
Before you buy.

Yes sadly I have tried that config. I did a clean XP install with onboard sound and agp card, after install completes and windows loads for first time it would play most of the login tune then crash with a loud continuous shriek. Went into BIOS, disabled sound, unjumpered it, reboot, and boom it ran great.
Would an IDE contoller card be an option here? or would the stuttering Southbridge still be involved?

(pci-6052E) I want to genarate a pulse every time the counter is zero.

I'm using the counter on my pci-6052E to count the number of pulses on a line. The count goes up and down since I have a direction signal. Now I need and indication (a pulse) every time the count reaches zero. This is similar to the breakpoint function on your motion controllers. Is this possible....

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TC Pulse.vi ‏81 KB

Minimum timeout for read operation in PCI-6052E.

Hi,
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What is the minimum timeout required?
Thanks.
Elias
"A man can succeed at almost anything for which he has unlimited enthusiasm."

Hi,
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not sure what the problem is.” The problem here is that is not the 6025e not
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ANSI C\Analog In\Measure Voltage\ and let me know if they help.
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Hello,
I refer to your posts because i am using the PCI 7041/6040E card as
well but without any success to make it work. The problem I have
already described in the following thread:
http://forums.ni.com/ni/board/message?board.id=170&message.id=120198
Would be nice if you had a look on it, maybe you can help me. BTW, the
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Darmstadt
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