Synchronization/ addition of tasks to

Please, can any body help me in joining the attached taks to be in one code?
I have attached my main appklication of aquiring voltage signal triggred by digital signal.
I would like to join the other two attached application to my main application in the same code and to share the same trigger sourse.
by the end I would hjave three analog signals triggred by digital start trigger syncronized at the same time and sharing the same internal clock. the samplingrate will be the same for all signals.
your help is highly appreciated as I am in urgent need for your help.
Thanks
Attachments:
Triggered Continuous Acquisition.vi ‏36 KB
Intake Pressure.vi ‏32 KB
Thermocouple (Intake Temp.).vi ‏26 KB

Hey,
I don't think that anyone here will make YOUR WORK.
You should have a look at the synchronization examples under ....\LabVIEWX.X\examples\daqmx\synchronization and try to combine your code.
Christian

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Synchronization of multiple tasks?

Hello,
I am currently working on a project that requires analog output signals and counter tasks to be synchronized. The board I am using is the NI-6363 X series. I am doing this in C++.
I called the start tasks one after the other, and then the read code like this:
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Obviously the software timing delays between the start tasks and the read functions are causing my results to be inaccurate.
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Hi John,
Thanks for your timely reply.
I am using two counters to perform buffered counting edges in TTL pulse inputs. I tried to start the clock source after all the tasks but there is still a problem. Here's an updated snipet of my code:
DAQmxStartTask(taskHandleCtr);
DAQmxStartTask(taskHandleCtr2);
DAQmxStartTask(taskHandleAO);
DAQmxReadCounterU32(counter1)
DAQmxReadCounterU32(counter2)
DAQmxStartTask(taskHandleClk); //Clock source
In theory none of the first three tasks would not start until the clock got started which would mean they would all be synchronized. However the program seems to be stuck waiting for a measurement in the DAQmxReadCounterU32 function and never even reaches the start task code for the clock.
If I change rearragne the code to look like this:
DAQmxStartTask(taskHandleCtr);
DAQmxStartTask(taskHandleCtr2);
DAQmxStartTask(taskHandleAO);
DAQmxStartTask(taskHandleClk);
DAQmxReadCounterU32(counter1)
DAQmxReadCounterU32(counter2)
The program would run but the time delay between the start clock and DAQmxReadCounterU32 functions would cause the same problem i had initially.
The results are inaccurate because the analog output tasks are driving scanners, if the analog output tasks were started before the counter tasks, the counter tasks would record counts that corresponding to the wrong scanner position and there would be no way of telling how much the results were shifted by.
I took a look at the Arm Start Trigger section of the manual, but I am confused as to where I would find this signal (external source?) to trigger the tasks and if there is a specific function I use to set that? I couldnt find that function in the C reference file.
My apologies if I overlooked anything, I am quite new to using DAQ boards.
Thank you again
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Hi all,
I am trying to figure out how to synchronize multiple tasks across multiple X-series USB boards (6353, to be precise).
I have to run a digital output task AND an analog output task on each board. All four tasks (the DO and AO on Board 1, and the DO and AO on Board 2) must be synchronized.
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I know how to synchronize a single task across multiple boards (say, a DO task across 2 different boards). That works fine too.
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Under both configurations, I invariably get error -89137 when I try to start the tasks -- required resources (PFI12) in use by Dev1/do/SampClock. I understand what the error is telling me. What I don't understand is why I'm receiving this error when I don't have any of my tasks configured to use the DO Sample Clock. It seems as though it is not possible to export a clock signal to a PFI line and simultaneously run a clocked digital task, even if the clock source for that task is specified as something other than the DO Sample Clock?
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Solved!
Go to Solution.

Update: I decided to try using a counter as the source clock. One cannot use counter 0 to accomplish this, but it does appear to work with counter 1.
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I would like to synchronize an analog task and a counter task. I want to share the AI sample clock for the analog task and the counter task. I found an example on NI website that seem be be suitable:
http://digital.ni.com/public.nsf/allkb/BB7AE2D12BB04CBE862574FA005D3826
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Go to Solution.
Attachments:
DAQmx error.JPG ‏83 KB

Hi Clemente,
The reason you were getting this error is because the counter task was set to finite while it is continuously reading in the while loop.
The VIs on the same link have been editted so that they will work. Please chech them out and see if they work.
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Best Regards,
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Hello DAQ fellows, I am new in the Counter field, so it would be really helpful to have your comments and advices about my application.
I need to acquire simultaneouslythe following signals:
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Attachments:
4461-6250ai-6250Ctr.vi ‏1561 KB
Fig 7-8 from M SeriesUserManual.jpg ‏16 KB
CreateTask6250Ctr.vi ‏35 KB

Could I also use the PXI_Clk10 as a "ReferenceClock.Source" for the three tasks in order to synchronize them? I mean, instead of using the "SampleClock" of the AI task of the 6250 and the Ctr tasks of the same device. See the attachment to see what I mean.
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Attachments:
4461-6250ai-6250Ctr - PXI_Clk10.vi ‏1558 KB

Can I simultaneously configure a device to more than one task?

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Attachments:
Can_I_simultaneously_configure_a_device.doc ‏19 KB

Hello;
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Attachments:
VI_screen.png ‏434 KB

Hello AntonioD,
first of all thank you for posting your question in this forum!
The error message that occurs (201314) means that probably you use a clock frequency higher than your input signal frequency. In other words you try to measure the frequency before the input signal complete a period. So there comes the error.
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synchronization.vi ‏30 KB

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In response to your inquiry, please be advised that we are currently working on the compatibility of Microsoft Outlook with Nokia Ovi Suite application regarding synchronization of calendar tasks. We suggest that you use Ovi Calendar as an alternative for your calendar activities. Please see the link provided below:
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Synchronization/ addition of tasks to

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