Production of rectangular pulses

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  Hello

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• How to set a start and a trigger digital stop conting number trigger signals

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  Use the source of synchronization as the trigger pulses & configure rates at least 100 times rate of relaxation. Then compare the value count against'm & n' & generate the impulse on the PFI lines or the port pins.

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    at com.gemstone.gemfire.management.internal.beans.DistributedSystemBridge.listGatewaySenderObjectNames(DistributedSystemBridge.java:1218)
    at com.gemstone.gemfire.management.internal.beans.DistributedSystemMBean.listGatewaySenderObjectNames(DistributedSystemMBean.java:344)
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  -------------------------------------------------
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  12.1.4\bin
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  .................................................................................................................................
  deploy-working-dir                       : c:\software\ssw\node1
  distributed-system-id                    : 1
  license-data-management                  : === omitted ===
  license-working-dir                      : c:\software\ssw\node1
  locators                                 : localhost[11044]
  mcast-port                               : 0
  name                                     : node1
  
  
  Cache attributes
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  Hello everyone,

  I'm generates a pulse for specific time. Now, I want to measure within the same daq card. I've done Vi for him but he has an error. I have USB daq-6343. I enclose my Vi here.

  The problem is I am able to get pulses generated at PIN 6 PFI but reading Vi watch time-out error.

  I plugged the wire between PFI 1 pin and PFI 6 pins on the DAQ card.

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  The other issue was my suggestion to leave DAQmx Timing.vi outside of the configuration string entirely for cases like this where you only want to build a single pulse.  To be honest, it's a habit & practice I adopted a long time ago.  I thought one of the reasons was that the finished pulse trains required a minimum of 2 samples.  A bit of test code showed me that it isn't true, if my memory tells me there was a time when it * used * to be true.  I don't remember if I have errors or if the task has chosen to generate 2 pulses with just a warning, or something.  I just remember that, while he was working on a module that was supposed to be able to produce any number of pulses from 1 to N, I found that I wasn't actually able to support the case of 1 pulse by asking just 1 sample over sample mode.

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  Hello

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  Dear team of support of National Instruments,

  Here's what I have so far:

  I was able to generate the number of pulses (a pulse = a rising edge and front descending one) that the user has indicated via the GUI I created in Visual C++ 2008.

  I use DAQmx 8.6.

  I use the DigitalSingleChanWriter (hopefully, that's what it's called).

  I use for the synchronization of the sample, on request.  I tried to use all other types of calendar but I always get a DAQException run the error that says I can use only OnDemand calendar.

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  OK, so I just returned from the lab, and this is what I got:

  I was able to control the time at the time of the high and low by using the "WriteSingleSamplePort" of the DigitalSingleChanWriter method.

  I put it in a loop that repeated many times that the user wanted impulses.

  At the beginning of the loop, I used a delay function that I wrote and delayed for a time given and then a pulse with a value of 255 and then delayed again and a pulse with a value of 0. And then restarted the loop.

  In the end, it works.

  Of course, I have another question.  I kept reducing the amount of time between two pulses (1 s, .5s, .2us and so on).  However, once I have diminished the time of secondes.01 or a millisecond, the pulses on the arrested oscilliscope becomes smaller.  It seems that past 1 millisecond Board USB-6008/6009 is unable to deal with the exigencies of the moment.  Or else the computer trash part on that I cannot deal with the exigencies of the moment.  But I believe that the Council is not at fault because it was designed for this exact sort of thing, could you tell me if there is no limitation to the Commission which prevent production of pulses in or within a period of 1 millisecond.  Thank you very much.

  Thanks for all the help,

  Daniel

  P.S. I'll stop you buggin with big messages that I promise you.

  P.P.S.  If someone wants to see my source code for their own project, I'd be more than willing to share.  Please email me or leave a message here.

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  Hello
  It is a simple .vi which generates a configurable, buffered pulse train dynamically. I also want to let you know that with this type of advice (DAQ), it is impossible to update the output in real time. You must be careful because the time between you use "DAQmx Write" and the output effective physical change not IS NOT FIXED.

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• Generate a pulse trains finished redeclenchables 2 of different duration using 2 counters

  Hello

  What I want to do is to generate at the same time 2 redeclenchables finite pulse trains using my PCI-6221.

  To be more clear, take a look at the attachment.

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  I can easily produce/dev/ctr0 or/dev/ctr1, but never/dev/ctr0 and/dev/ctr1 at the same time.

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  Thank you very much.

  Adrian

  I couldn't open your VI as I use LV 2011 on this desktop computer.

  However, you must just on delay initial as well as the low time some delay desired with respsect to PFI0 on the ctr0 task.

  

  Other NI DAQ products behave differently, but the 6221 uses "shortly" for the initial delay for each output reset after the first.

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