Synchronization of multiple unit with the PXI-1044-6250 M-6143S

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  Hello

  I'm trying to generate a signal CW of pulse modulated with the PXI-5650 as source RF and the PXI-6653 as the modulation signal. Basically, I'm trying to generate a simple radar waveform. It seems that it would be possible to use the synchronization Module (6653) to transform the RF output on / off on the signal generator (5650), but I do not know how to route the signals from one to another using LabView.

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• Acquire more than 2047 samples with the PXI-4461 instaled in SMU-1073

  Hi all, I would ask you for help with the buffer limit.

  I intend to buy digitizer PXI-4461 and he instal in SMU-1073 chassis, namely control via MXI Express of Labview installed on a separate computer.

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  The on-board buffer 2047-sample is used only as a backup if the flow of data to the PC host (via MXI Express in this case) is not fast enough... that it will be (explained below).  DAQmx transfers data from the buffer of the device to the host PC as fast as he can and, in ideal conditions, should not save the buffer 2047 much at all.

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• Can you use Pocket wizards to trigger the HVLF60M Sony flash when it is out of the unit with the A7R?

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  LarryMarshall, Any Trigger of manual Radio should work.  Assistants of pocket or RadioPoppers.

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  It is the power of a Flash of modern Radio System.

  Manual triggers are old school.

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  Thank you

  Hello

  The runclufvy.sh gives the warning below can I ignore this or need to fix for the installation of the 11202 RAC on RHEL 5?

  Check for multiple users with the value of the UID 0
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• Is it possible to route signals of relaxation between two chassis PXI-1002 with the PXI-8335?

  Hello

  as the subject says, I am interested in the delivery of a signal to trigger between two chassis PXI-1002. At present, these two chassis are connected by a MXI - 3 system using maps PXI-8335. The software is Labview 2010 sp1 and 380 NIScope drivers.

  We want to keep (a PXI-5122 by chassis) scanners supply separated due to the requirements of our measure! The chassis are connected via cable to fiber optic. This explains why I can not just use the shutter release in Star, or connect via 'Trigger' or 'clk' cards (the inputs / outputs to the front of the cards).

  I found a few examples, but they seem to all be designed for use with a chassis only, I'll call later to the examples that inspired me to this point. Each guide explaining the synchronization of several chassis systems seems to use another material or VI is not accesible to me. This makes me wonder if my hardware has the capacibilities I need.

  The first picture shows approximately where I started from (sorry I can't post VI, confidential...):

  Only the middle part is interesting. Two sessions are initialized and manipulated parallel, trigger too. This has led to delays in the signals and should now be fixed. This apart from the VI works fine.

  Goal is to trigger only on one channel but both devices! If possible, the device will trigger must be chooseable.

  I started to rebuild the VI using the "EX Synchronization.vi 5xxx niScope' seeming spontaneity. The result is shown in the following image:

  

  I tried different RTSI lines, but had no positive results. only the main channel has triggered.

  After this first approach, I looked in the "niScope EX .vi multi-Device configured Acquisition (TClk)" and other examples of TClk which seem to work for similar problems. The VI of reconstruction can be seen in the following images:

  

  (Sorry, I had to use two photos..)

  In this case, I didn't have no choice for trigger lines, it would automatically set the VI TClk. I tried to trigger on both devices, though. This second approach seemed promising to me, but it was an error:

  "niTClk Synchronize.vi:1".

  Index (starting at zero) of the session: 1

  The error reported by the pilot of the instrument:

  No registered trigger could be found between the
  devices on the route.

  If you have a PXI chassis, the chassis correctly identify in
  MAX and make sure that it has been configured correctly. If you use PCI
  devices, make sure they are connected with a RTSI cable and that the cable RTSI
  is saved to the MAX. Otherwise, make sure that there is an available trigger line
  the trigger bus shared between devices.

  Source device: PXI1Slot4

  Target unit: PXI2Slot4

  Status code:-89125niTClk Synchronize.vi:1

  Index (starting at zero) of the session: 1

  The error reported by the pilot of the instrument:

  No registered trigger could be found between the
  devices on the route.

  If you have a PXI chassis, the chassis correctly identify in
  MAX and make sure that it has been configured correctly. If you use PCI
  devices, make sure they are connected with a RTSI cable and that the cable RTSI
  is saved to the MAX. Otherwise, make sure that there is an available trigger line
  the trigger bus shared between devices.

  Source device: PXI1Slot4

  Target unit: PXI2Slot4

  "Status code:-89125"

  This error came back even after I've identified this drug as possible to the MAX, as shown in the screenshot:

  

  In some of the textbooks, they showed how to get the MAX trigger lines, but as you can see, there is only booking options in my MAX. Whatever I do, I can't find options to define how to get my trigger signals...

  In principle, it is possible to trigger instruments in different chassis, which is indicated in this Guide and others... the question that remains is can it be done with my set of components?

  I understand that the use of multichassis compromised the integrity of the lines very adjusted as trigger in Star etc., so the configuration should be taken into account in some way, that my approach does not, I knew... But there must be a way to do this? And to start: to get just any signal from one device to the other trigger!

  For any advice on this issue, I would be very thanfull!

  Concerning

  Max1744

  Hi Max,.

  Thanks for the detailed post and explanations of your application and requirements. You're right using TClk, because this is the optimal method to synchronize the 5122 digitizers. The original VI you worked with is unique for some of the legacy scanners and does not directly work with scanners based on the most recent CMS (for example the 5122). The good news is that you can synchronize these cards to separate chassis, but it will use the calendar 66xx and synchronization (T & S) cards in the chassis of the master and the slave, as indicated in the guide that you have accessed. These are needed because a common reference clock must be shared between them as well as a couple of tripping. MXI itself can not handle export triggers and clocks, so there is no way to do this without physically wiring between the chassis with cards T & S. Unfortunately, regardless of what specific method, you use for synchronization, it will take a material extra beyond what you currently have.

  As one of your needs looks like it is necessary to retain wiring between the chassis directly, you may need to consider to synchronize using 1588 or GPS protocols. 1588 Protocol is a system for synchronization on the network while GPS course use antennas and locks for a common wireless signal. Although these synchronization methods may allow you to keep your chassis isolated, they will also require some manual configuration because you would be able to use the TClk synchronization and so the level of synchronization you can get between the cards may not be as good that can physically wire signals between the chassis using T & S cards.

  Hope this helps,

• Trip trying to rearm with the pxi-5122 times

  Hi all!
  This is my first discussion in this forum so I'm not sure this is the right place to post, because I'm using LabView, but maybe it's a hardware problem.

  Then... I have a problem to calculate the tripping time rearm to pxi 5122.
  Compared to data sheets, I read that it should be about 3 us with the CDT to the large or 12 US if on.
  But I need a precise measurement of the time out after each record measured so I decided to find it by myself...
  With the help of an acquisition program that I have previous written in LabView, I started only acquisitions of 10000 records and each record is composed of 128 samples; as signal I've used waves square with different frequencies, 10 volts peak-to-peak (my trigger was set on the first channel of 5122 with 1 volt in value of edge).

  First acquisition: wave of 50 kHz. Theoretically, I s 0,2 need to capture 10000 records without losing all the square wave signals. Choose a time of acquisition for a single record of 15.3 us, I found that the time required is 0.199998 , very similar to the one expected.
  Then by choosing a time of acquisition for a single record of 15.4 us, I found approximately 0.4 s.
  I can guess that this latter one each tops of two waves will lost so I held twice the capture of 10000 records time.

  Because the wave is 20 us I calculated a timeout of 20-15, 3 = 4.7 us.
  It wasn't like the 3 described us for the 5122 but I was not impressed and I went with my essay.

  Second wave: 20 kHz. I need 0.5 s to capture 10000 records without losing the square wave signals.
  What I found was that in this case, choose us an acquisition time for one record of 39.6 required 0.5 s to capture all vertices, then with 39.7 us I held about 1 second, once again, twice by the time.
  The previous example, I calculated the dead time: 50-39, 6 is 10.4 us.

  Very strange... idle time I'm supposed to be the trigger for rearmament (and thus fixed) did not differ in 2 cases.
  Tried with other wavelengths, the values are always different.

  This also the frequency of the square wave of fixing and changing the number of samples per record.
  For example, with 128 samples per files as I told before, I needed a measurement time of 15.3 US to collect all the consecutive summits, while 64 samples I need 12.8 us and so forth.

  So it seems to be a dependency between the dead after a record time (the trigger reset? now I'm not sure if I can call it that) and the sampling frequency of the pxi 5122.
  But I don't know why, the acquisition of data behave in this way.

  Is this good? Rearm time should be set, shouldn't it?

  I know it took some time to read my problem but I tried to be more precise, I could.
  Thank you in advance.

  Giacomo

  Yes that's correct.  However, I do not think that its acceptable rate of the nearest synchronization that is chosen.  I really think he goes to rate lowest according to acceptable timetable.  So, if a synchronization rate is 2 and another is 5, and you want a 4.9uS rate, the synchronization will be 2, while 5 is the closest.  (Or maybe it's the other way around)  That's why you see the double period during the change of rates by just a fraction.

• Synchronization SHIFT-arrow move with the grid spacing

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  I uninstalled, re-installed, modified and repaired everything NIDAQMX (15.0.1) 15.0 HSDIO, NI-VISA (15.0.1), etc.

  Original symptom is that when I pressed the button on the test Panel, nothing would happen.  Then, the next symptom is that MAX has said MFC90.dll (not found) and MSVCP90.dll (not found) and MSVCR90. DLL (not found).

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  Hi fully,

  Sorry to hear that!  Nidmfpan.exe is the process that opens MAX test panels and MFC90.dll is a Windows wrapper.  Combinations of driver reinstall or copy other MFC90.dll files in System32 are unlikely to solve the problem.

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  Note that the file you want to rename is nidmfpan.exe.manifest and NOT nidmfpan.exe.

  If not immediately successful, close and reopen the MAX and try the test panels a few times more.  If after several attempts it still does not work and the correct manifest file has been changed, it can point to a deeper problem of Windows that requires a reformatting of the OS.

  Really that's hope!

  P.S. you might get more visibility to a problem as it is in the sections "PXI" or "Digital i/o.  VXI and VME are not widely used these days, so this section of the forums is probably not too much traffic.