How to control two 6011e daq card to acquire eight signals simultaneously.

I use two 6011e daq card to acquire eight signals simultaneously .I use labview function to realize it,but the data graph show that the signals aren't acquired simultaneously,why?how to do it?

Hello;
You need to use the RTSI bus to route one board's clock signal to be the second board's clock signal. By doing that, you will have the same signal clock timing both boards, which will make the synchronization hardware timed.
You will need to have a RTSI cable connecting both boards together also.
The best way to go about this is to open the Labview examples that show how to synchronize multiple devices. You can apply the same idea to your board.
The examples can be found at Search Examples->I/O Interfaces->Data Acquisition->Multiple Device DAQ Examples.
Hope this helps.
Filipe

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Sorry it took me so long to answer, I've been busy lately....I've found a solution to the problem I mentioned, and just in case anyone has similar problems in the future, I'll shortly describe what happened.
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Hello asc01001:
The digital pins of the PCI-6229 are labelled as Px.y, where x is the port name while y is the channel name. For example, pin52 of the NI 6229 is P0.0; which is also port 0, channel 0 of the digital I/O of the DAQ card.
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One of the beautiful things about CompactDAQ is that you can put multiple modules of the same time (Analog, Digital, etc.) into the same task and they are automatically synchronized. So, to synchronize the two modules, create one Analog Input task and reference the channels as "cDAQ1Mod1/ai0:3, cDAQ1Mod2/ai0:3". This will automatically synchronize the two modules together.
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How do I know the daq card is collecting data i.e. has been triggered trigger

I want to alert the user that the daq card is collecting data after he pushes the trigger switch. I wish to update a message text box when it has been triggered. Thanks, PCI-6221 37 pin

You could use something like this, to ensure that at some specific point in your code a string indicator on the front panel is updated. After placing the string indicator, right click on it go to Create>>Proprety Node>>Text>>Text. The string indicator will update to the input of this property node when this sequence structure is reached. Does that help?
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How to control two different processes with one DAQ output board

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I have a PXI-6722 8-channel, 13-bit analog output board, and with this I want to independently control both the temperature (thermometer excitation/heater control) and magnetic field in my experiment. Unfortunately, it appears that I cannot do both simultaneously, which is totally unacceptable for my application.
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http://digital.ni.com/public.nsf/websearch/9C4E9FD0C7469BC286256F100074EADC?OpenDocument
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Alan,
Thank you very much for the quick response.
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PIII, 700 MHz CPU, 512 MB RAM
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1) The difference between P3/700MHz computer and P4/3GHz computer is very small
2) The S-series performed worse than E- and M- Series
     Spec (kS/s)   Tested by me(700MHz P3)   by NI engineer (3GHz P4)
6024E   200/4            15.7 kHz                    17.36 kHz
6040E   250/4                                        18.9 kHz
6251   1000/4                                        23.0 kHz
6133   2500/1            13.8 kHz
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1) The S-series performed much worse than E- and M- Series (simultaneous sampling is worse?)
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6024E    200/1           54.8 kHz
6110    5000/1           19.4 kHz
6133    2500/1           14.5 kHz
Simulated device          135 kHz
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      Spec (kS/s)   tested by me (700MHz P3)
6024E    10/1             132 kHz
6713   1000/1              38 kHz
Simulated device          134 kHz
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Jin-Xing

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Can anyone tell me the easiest way to do analog input data acquisition
(in LabVIEW) using two PCMCIA (DAQCard-AI-16E-4) cards? There is no
RTSI bus connection between the cards... as would typically be used to
synchronize the scan/trigger.

[posted and mailed]
[email protected] (Joshua Marshall) wrote in
<[email protected]>:
>Can anyone tell me the easiest way to do analog input data acquisition
>(in LabVIEW) using two PCMCIA (DAQCard-AI-16E-4) cards? There is no
>RTSI bus connection between the cards... as would typically be used to
>synchronize the scan/trigger.
>
I'm not sure about these particular cards and whether it applies to them
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ur channels. Set up
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http://www.icon-tech.com.au

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Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'

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How to control two 6011e daq card to acquire eight signals simultaneously.

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