is it ok to connect two outputs analog voltage in series?

Similar Questions

• Interleaving of samples: two outputs analog (tables with different lengths)

  CHAN                   AOCHANNEL1       AOCHANNEL2       AOCHANNEL1           AOCHANNEL2       .. .and so on
  
  SAMP                   * * * * *           *              * * * * *              *           .............and so on

  Hi guys, how could I go on the interlacing of two arrays of different lengths in a two-channel analog output?

  In the illustration above, for example, I like to write 5 values in channel 1, followed a string of unique value 2 and so on...

  I use DAQmx library controls to achieve this (not LabView).

  I am able to write unique values each time a task is opened without any problem, I was wondering if I can interleave the berries so that values are buffered and tasks are performed with greater haste.

  best regards,

  Ravi

  target met: I've made the following changes:

  CREATION OF TASK 1
  
  CREATION ANALOG_VO channel 1 & channel 2 in TASK 1
  
  CONFIG. CALENDAR OF TASK 1
  
  CREATED some TENSION with SAMPLES interleaved pre
  WRITING TASK 1 VALUES
  TASK 1 STARTED

  
  
  DAQmxCfgSampClkTiming(taskHandle1,"",SAMPLING_RATE,DAQmx_Val_Rising,DAQmx_Val_FiniteSamps,2*SAMPLE_SIZE_WX)
  
  
  

• How can I create a single delayed output (analog voltage) of a Trigger (analog voltage) input reference pulse?

  I am working with a combustion chamber and using a system of data acquisition (with the hardware OR SCB - 68) to read the pressure in the cylinder (such as analog voltage). I'm trying a pulse delayed, 1 millisecond to 5 volts of output once the pressure in the cylinder is high above 5 bar (which corresponds to an analogue voltage of 0.25 V). I would also like to record 30 ms samples before the trigger and 220 ms samples after the outbreak. The following image shows visually what I'm talking about.

  I created a LabVIEW VI (which is attached), but I keep running into 2 issues:

  1. When I run with samples finished after a period of time, I get error-200281which I don't quite understand.
  
  
  2. Using the Express VI 'Out of time' to keep time for the pulse I can not get a resolution of 1 millisecond, the pulse is not generated when I put the window between 0.003 and 0.004 seconds for high pulse (i.e. the resolution of 'Elapsed Time' seems to be too coarse).

  I'm a beginner to LabVIEW sorry if my questions are trivial or my VI makes no sense, but I was stuck on this during more than a week. Any help would be greatly appreciated!

  Thank you

  Morgen

  This isn't a good way to trigger a pulse.
  Use a trigger DAQmx to send the pulse when your acquired signal exceeds 250 mV you specified.

  See this for DAQmx trigger:

  http://www.NI.com/white-paper/2835/en/#toc4

• To write a waveform to two outputs analog of DAQ(USB-6215)

  Hello

  I use USB-6215, who has two analog outputs and having to send the same waveform through the analog outputs two of my DAQ. at the same time. in fact, I have a text file consisting of a code word (please see the attatchment) with dt, freq and annex 0 in the first column and other columns contain the word coded. Withe the help of dt, the rate and the data I did a waveform with the wave of construction VI. I am able to write this wavefrom through an analog output A01 right now. I want to know how I could write the same analog waveform other AO0 out simultaneously. I use a source of external triggering via PFI0 to be triggered. for now, I use the write.vi DAQmx (analog channel 1 DBL 1 d N samples) and DAQmx create virtual channel.vi with dev1/ao1 as the physical channel. For more information, I am attatching the program along with the text file. Please see page 2 of my structure of matter in the VI attatched.

  Thank you.

  Kind regards

  Raja

  Hi Steve,.

  his works now. I changed the instance of writing DAQmx for analog waveform samples N channel N. still, I now that a single waveform. How could I do like two like it (writing DAQmx) will not accept a single waveform as the entry as the number of channels in the task will now be 2 where, under the waveform has an exit.

  Kind regards

  Raja

• can I connect the outputs analog of a DAQ configuration in series to have the highest voltage source?

  Hello guys,.

  My question is provided in the topic, you have an idea about that? your help is appreciated.

  ELA

  Hi Ela,

  For almost all devices supported by DAQmx, you can't. When all AO channels have the same motive, connecting them in series would be short the output channel on the ground, which is bad.

  However, there is one exception: the SCXI-1124 module has channel-to-channel isolation, which allows channels to be cascaded to output voltages: I can cascading the output voltage of an SCXI-1124 module?

  With channel-to-Earth isolated peripheral (such as NI 926 x or NI 623 x), you can cascade multiple devices together, but not multiple channels on the same device.

  Brad

• Sending of different waveforms on two separate analog output channels

  Hello NOR community,

  I am trying to send a note to say 100 Hz signal on one of the channels on my computer USB 3101 FS Measuremnt and a sinusoid 300 Hz on another channel. I've seen a lot of soultions to this problem, but I do something wrong in my attempt to imitate. As a result of the use of a product of MC, I use the library instead of DAQmx Ulx, but the Vi is virtually interchangeable features wise. In any case, I managed to send two signals (see annex VI), but they are still the same in terms of amplitude and frequency. In other words, I get the same signal on both channels as opposed to the two different signals of different frequencies.

  Thanks for your suggestions,

  Leo

  Hi Lemmeneger,

  I have reproduced what you're trying to do, but using DAQmx since I did no material of MC. And had no problem sending two different analog ouptuts.

  Could you try to wire the errors?  and let me know if something doesn't appear! I do not see a problem in what you are trying to run

  

  

  Kind regards

  Caroline

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  * Hi-speed III Port Replicator is not an option, because it is not available in my country (Croatia).

  Hello

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  • MacBook Pro (retina, 15-inch, early 2013) and later versions
  • MacBook Pro (retina, mid-2012)
  • MacBook Pro (13-inch, mid 2009) and later
  • MacBook Pro (15-inch, Late 2008) and later
  • MacBook Pro (17 inch, early 2009) and later
  • MacBook (13 inch, late 2009) and later
  • MacBook (13-inch, aluminum, late 2008)
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  • MacBook Pro (retina, 15-inch, early 2013) and later versions
  • MacBook Pro (retina, mid-2012)
  • MacBook Pro (13-inch, mid 2009) and later
  • MacBook Pro (15-inch, Late 2008) and later
  • MacBook Pro (17 inch, early 2009) and later
  • MacBook (13 inch, late 2009) and later
  • MacBook (13-inch, aluminum, late 2008)
  • MacBook Air (late 2008) and later
  • Mini Mac (early 2009) and later
  • iMac (20 inch, early 2009) and later
  • iMac (24 inch, early 2009) and later
  • Mac Pro (early 2009) and later

  

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  • MacBook Pro (retina, 15-inch, early 2013) and later versions
  • MacBook Pro (retina, mid-2012)
  • MacBook Pro (13-inch, mid 2009) and later
  • MacBook Pro (15-inch, Late 2008) and later
  • MacBook Pro (17 inch, early 2009) and later
  • MacBook (13 inch, late 2009) and later
  • MacBook (13-inch, aluminum, late 2008)
  • MacBook Air (late 2008) and later
  • Mini Mac (early 2009) and later
  • iMac (20 inch, early 2009) and later
  • iMac (24 inch, early 2009) and later
  • Mac Pro (early 2009) and later

  

  Apple Mini-DVI to S-video/Composite adapter

  Part: M9319GCompatible with:

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  • MacBook (13 inch, late 2007)
  • MacBook (13-inch, mid 2007)
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  • MacBook (13-inch)
  • iMac (early 2008)
  • iMac (mid 2007)
  • iMac (late 2006)
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  Apple Mini-DVI to DVI

  Part: M9321GCompatible with:

  • MacBook (13-inch, mid 2009)
  • MacBook (13 inch, early 2009)
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  • MacBook (13 inch, late 2006)
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  • Mini Mac (early 2009)
  • iMac (early 2008)
  • iMac (mid 2007)
  • iMac (late 2006)
  • iMac (early 2006)

  

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  • MacBook (13-inch, mid 2009)
  • MacBook (13 inch, early 2009)
  • MacBook (13 inch, late 2008)
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  • MacBook (13 inch, late 2007)
  • MacBook (13-inch, mid 2007)
  • MacBook (13 inch, late 2006)
  • MacBook (13-inch)
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