Using the DAQ USB-6009 meter and an analog input voltage at the same time.

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• Can PCI 6602:How I use digital lines of the Board of Directors and at the same time to generate trains of pulses by using a meter?

  Hello!

  My problem appeared when I tried to update my traditional NOR-DAQ legacy code to DAQmx.

  I use 2 meter (meter 5 and 7 meter) on PCI-6602, to generate trains of pulses, as well as the lines of e/s digital port 0 (the form lines from 0 to 7). What I do in my request, it's that I'm starting to generate the pulse train on the output of 2 meters and after that I play with the State of digital lines.

  Traditional, it was no problem to use the meters and digital lines at the same time, everything went perfectly, but in DAQmx, is not possible.

  What's happening: I start generating train of pulses on the output of counters, no errors, but when I try to change the State of a line of digital port the generation of the pulse train is stopped. What happens when I start the task associated with the digital way.

  My question is: is it possible to create a channel on digital lines without changing the channels created for meters?

  Another thing that I managed to do with the panels 'Measurement and Automation Explorer' and Test for PCI-6602, is basically the same thing, I generate trains of pulses on the output of the 7 meter and try to start a job on the digital line, but I get an error:

  "Error-200022 occurred in test Panel.
  Possible reasons:
  Measurements: Resource requested by this task has already been reserved by another task.
  Device: Dev4
  "Terminal: PFI8.

  On the contrary if I use the counter 0 or a counter 1 to generate trains of pulses I encounter the same problem.

  What resources are used by 2 to 7 of the PCI-6602 card counters and the counters to 0 and 1 do not use?

  Thanks in advance for any answer!

  Ciprian

  After doing some real tests on this device, I found that it is a normal behavior for the jury of 6602.  This is because when you start a task digital all 32 lines are configured for digital i/o, so it replaces your meter operation.  The article below the link explains a little more on this subject.  You must start the digital task before the task of counter to use the features of both in your program.

  2 meter and above will not work correctly when you perform digital i/o on NI 6601 or 6602

  http://digital.NI.com/public.nsf/allkb/43F71527765EEC3886256E93006CD00C?OpenDocument

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  Hi Tupaj,

  See a voltage floating as this can sometimes be the result of a measure badly grounded.  It would be useful, like Dennis, to know how you have this wired up.  Please take a look at this guide to make sure that the device is properly connected to Earth:

  Field wiring and analog noise - http://www.ni.com/white-paper/3344/en

  In addition, information about the configuration of your software are also important.  Here's an example of how implementing a fundamental mission of analog input for your 6009:

  Video installation instructions - http://www.ni.com/swf/devzone/ai/

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  Hello

  I have a USB - 6009 DAQmx. I want to measure an analog input with the highest possible sample rate (48 kHz). At the same time, I need an analog output in voltage from 0 to 5 Volts, lets say 2 minutes of the ramp. Both of these tasks require no synchronization of relatives. With respect to the specification, the highest rate of the AO is 150 Hz. It's ok for my application.

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  Create a task and add channels to the task, as follows:

  

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