Can I feed 12VDC in a USB - 6212 BNC?

Similar Questions

• Can't see the rise on a USB 6212 BNC channel time

  Hello

  I use an acquisition of data NI USB 6212 BNC to monitor the rise time. A single channel (AO0) is used to define a voltage all followed another channel (AI1). The problem I have is that I'm not able to see the rise on AI1 time, only a jump to the specified voltage.

  I started to edit one of the material examples. Initially, I have connected the two channels via a BNC connector to BNC cable but thought I better with a simple circuit. I set up a resistance on a model and connected my channels accordingly with crocodile clips. Unfortunately, the result remained the same and all I see is a jump to the previous setting in tension (usually 0) to the new I entered with a infinite slope (vertical line).

  I am fairly new to DAQ and plan to work with it for a while. The simple circuit will be expanded considerably in filter tests and other applications, but for now, I have to get the basics. I would appreciate help, that you can offer; only currently, my thoughts are if this could be a sampling problem (I put it to 400000 above) and if I may add a ceiling to slow things down. I want to get this to work, however, so I could develop by looking at rates of filters and sweep of the go-around.

  I enclose my screws in the hope that they will help you decipher the problem. Have tried different combinations on DAQ Read and Write with single or multiple and 1DB/Waveform channel, although I'm pretty green in their functioning, without success.

  In hoping to hear talk about you,
  Yusif Nurizade

  Yusif Nurizade,

  What type of signal you generate on the AO line? The default value in the output array is a single element zero. That didn't exactly have a rise time!

  To measure rise times sampling on the line frequency should be fast enough to get samples of several over the course of the rising part of the measured waveform.

  The signal on the AO line will always be in the steps from one value to another. This is the way of working with D/A converters. 6212 specifications indicate a speed of 5 V / us. If two successive samples were 0 to 10 v it would take exit 4 move us from one value to another. Same samplng HAVE it line 400 kech. / s, you would get no more than an intermediate value and would not be able to measure the rise time.

  Try putting an R - C circuit with a time constant on the order of milliseconds between connections AO and AI. You should be able to measure it.

  Lynn

• NI USB - 6212 BNC analog input impedance matching

  I just ordered a case NOR USB - 6212 BNC DAQ (should be delivered soon). I want to use to measure HV signals using a probe of high voltage of 1/1000 I have.

  Now, datasheet of the probe (not a lot of info) says it has an impedance imput 100MOhm. I suppose that it consists of a simple resisitve divider, and if the ratio is 1/1000, I wait so to have a 99.9MOhm resistance in series with a 0.1MOhm resistance. However, the data sheet also specify that the probe is designed to be connected to an oscilloscope with an impedance of 1MOhm. As this input impedance is very low compared to the low value of the separator of resistance resistance, so I guess that the real resistance at the level of the sensor values 99.9MOhm and 0.11MOhm (to obtain the 0.99 and 0.1MOhm when it is connected to the oscilloscope for 1mW).

  Therefore, given that the impedance of the USB-6212 according to the datasheet, the analog input is > 10GOhm, I expect to measure higher to true alternative voltages when connected to the acquisition of data from 10%. This assumption has a meaning?

  What would be the best way to get around this? Do a calibration and correct the values acquired in LabVIEW code? Or should I add precision 1MOhm resistance at the same time to the acquisition of input data to decrease its resistance to entry to the value expected by the probe?

  Thanks for your help!

  You are not alone

  Since you have a range of 1000: 1 I guess you also need bandwidth (I have a TEK 6015 A ), so you need based on the impedance input, a complex value, means he must not only watch but also the ability to input resistance (1 M).  demarcation of the field probes have usually some elements of toppings to match the probe and the input scope. RTFM of the help of the probe

  BUT a more serious point is that with your probe, you have a very high resistance.  And if you look in the specification of the 6212 you will find on page 2 by mistake ppm in logarithmic scale graph!  and even 100 k source impedance it not shown.

  So I'm afraid that a simple 1 M on the DAQ entry can work if you're only measuring DC, and only if you use a channel on the acquisition of data.  A workaround is an amplifier separate buffer with an impedance of good entry corresponding to the specification of your probe and a low output impedance.

• Difference between the name of the channel & Pulse Terminal (NI USB-6212)

  I have a box OR USB - 6212 & on the pinout data sheet, it is said that the FREQ OUT default PIN is 40 & the signal name is PFI14.

  I am trying to generate a pulse by FREQ OUT in c# & DAQmx by calling channel name "dev2/freqout". When I ran the program & attempted to verify the measurement using a multimeter, I don't have a reading of the PFI 14, but 6 PFI. When I tried to set the name of the channel for "Dev2/freqout", the pulse filled Terminal automatically textboox with control unit using the test panels & "/ Dev2/PFI6. When I started the program, I got multimeter reading out of the Terminal impulse.

  Can someone please explain to me about this behavior?

  Also if I want to write a program to read the pulses generated by FREQ OUT, should I wire PFI 14 to some CBC CTR or PFI6 to CTR CBC?

  No explanations and answers are very aprpeciated.

  Thank you

  Hi Kasrus,

  Thank you for that bring to our attention. I will study this question that you may have found an error in our documentation. My recommendation would be to use the PIN that works for you.

  Thanks again for us help to continuously improve!

  -------

  Aaron F.

  National Instruments

• Digital and analog inputs simultaneously - NI USB-6009 and NI USB-6212 - ANSI C

  Hello

  I'm reading at all times and at the same time analog and digital inputs. Digital and analog samples must be sampled at the same clock and acquisition should be started (triggered?) at the same time (I don't want, after some time, analog reception more digital samples - the opposite is also true).

  I found an example (in C source code) "National Instruments\NI-DAQ\Examples\DAQmx ANSI C\Synchronization\Multi-Function\ContAI-Read dig Chan" and tried to run with two USB cards: NI USB-6009 and NI USB-6212. Unfortunately, the two results by mistake, as described below:

  DAQmx error: the requested value is not supported for this property value.
  Property: DAQmx_SampTimingType
  You asked: DAQmx_Val_SampClk
  You can select: DAQmx_Val_OnDemand

  Task name: _unnamedTask<1>

  State code:-200077
  End of the program, press the Enter key to exit

  -Is it possible sync analog and digital acquisition in the paintings?

  -If so, how?

  Thank you

  Hello tcbusatta,

  Two of these modules, USB = 6008 and USB-6212, support only timed software inputs and digital outputs.  This means that you cannot define material timing (like finished sampling or continuous) for these modules.  Digital lines can be retrieved or written once to each call DAQmx read.

  This means that you will not be able to get any type of synchronization tight between the analogue and digital channels.  You will need a Board such as the NI USB-6341 in order to synchronize the AI and DI closely.

• Generation and acquisition of analog signals simultaneously on USB-6212

  Hello, I am novice programmer DAQ trying to create (what I think is) something very simple.

  I use a box NI USB-6212 and LabVIEW 8.5 is trying to generate a pulse train analog while recording a simultaneous analog input.

  My first question is, is it possible?

  Since I'm new to this, I use the DAQ assistant in LabVIEW.  I can acquire a signal, I can also generate the desired signal, but I can't seem to operate simultaneously.

  I have been successful in obtaining my program to work with both USB-6212, but I have to be able to do this with a single.

  I have attached the block diagram and vi, I hope that's easy to answer the question, even if my research so far has left me empty handed.

  Any help would be greatly appreciated!

  Jon L

  Hi Jon,

  Well, first of all welcome to the DAQ programming! I took a peek at your code and published it with a device simulation very well, so I ran with the PCI 6251 card in my computer and he did not also get errors.  Could you post the error code you get?

  If I could figure out what is your error, I would say you encounter errors of buffer because it is too much overhead in the DAQ to wizards in the face of data rates.  My suggestion would be to use the example called "Multi-Function Synch AI - AO.vi.  This program can be found in the Finder for example of NOR (see Help"find examples in LabVIEW).  "" It appears in the input and output material"DAQmx ' synchronization ' Multi-Function.

  Can you give that a try and let me know how it goes?  Thank you!

• Lines of 5V USB-6212

  Two questions:

  1)

  Anyone know what are the lines of 5V on USB-6212? They are input or output or external power? Is there any need of external power or it is powered by USB?

  2)

  You can use P0.x, P1.x and P2.x (total 32 lines) as digital outputs?

  Hi sbk143,

  Pages 33 and 85 of the Manual explain information about connectors.  Hope this helps!

• USB-6212: software problem timed task of analog input

  Hi all

  I have unexpected behavior using a USB-6212.

  The code example shows that when I run in sequence two analog DAQmx to task, material entry first a timed, the second software timed, it happens that the first readings of data are all wrong and have the same value for all channels.

  The labour code is the following:

     GetCtrlVal(panelHandle, PANEL_HW, &Switch); 
  
      if (Switch) {
  //
  // First Task: read 10 rows of values with hardware timing
  //
          DAQmxCreateTask("", &htAI);
          DAQmxCreateAIVoltageChan (htAI, MX_DEV_AI, "", DAQmx_Val_NRSE, -10.0, 10.0, DAQmx_Val_Volts, "");
          DAQmxCfgSampClkTiming(htAI,"", SAMPLE_RATE, DAQmx_Val_Rising, DAQmx_Val_ContSamps, 1000);
          DAQmxRegisterEveryNSamplesEvent (htAI, DAQmx_Val_Acquired_Into_Buffer, SAMPLE_RATE, 0, RefreshCB, NULL);
          DAQmxStartTask(htAI);
              Delay(1.0);
  
          DAQmxStopTask(htAI);
          DAQmxClearTask(htAI);
      }
  //
  // Second Task:read 10 rows of values with software timing
  //
      DAQmxCreateTask("", &htAI);
          DAQmxCreateAIVoltageChan(htAI, MX_DEV_AI, "", DAQmx_Val_NRSE, -10.0, 10.0, DAQmx_Val_Volts, "");
          DAQmxStartTask(htAI);
  
      for (i=1; i<=10; i++) {
          DAQmxReadAnalogF64(htAI, 1.0, 10.0, DAQmx_Val_GroupByChannel, AcqVoltRow, HW_AI_CHANNELS, &read, 0);
          SetTableCellRangeVals (panelHandle,PANEL_SOFT, MakeRect(i, 1, 1, HW_AI_CHANNELS), AcqVoltRow, VAL_ROW_MAJOR);
          Delay(0.1);
      }
      DAQmxStopTask(htAI);
      DAQmxClearTask(htAI);
  

  A picture is worth a thousand words: analog inputs have been connected to a network of resistance have known values.

  The upper table contains timed material acquisitions, the lower the software timed readings... as you can see it the first line is the set of values of 0.13, totally wrong

  If the task of timed acquisition of software runs without the earlier (in my demo, that this can be achieved by the switch at the top right), the readings are correct!

  

  Y at - it something I am doing wrong?

  I also tried to run the program on USB-6009, but it seems to work properly.

  [LabWindows/CVI 2010 SP1 - driver OR-DAQmx 9.4 - Windows 7 x 64]

  This problem was corrected by NOR-DAQmx 9.5

  324044 NOR USB-621 x task HAVE request returns incorrect data after erasing a task HAVE stamped

• Is this a safe combination for USB-6212

  USB-6212 out by SC-2345. I want to drive relay on a Board of SC-2062. The plan is to run a (probably personal) cable on the SC-2345 and wire digital output straight through inside 2345.

  (1) the USB-6212 will lead the relay without overloading?

  (2) 5 v of the SC-2062 requests are too large for the USB-6212 right? I have to use the power of the SC-2345?

  I read the specifications of all these tips, but do not know if I read them correctly. I don't want to do for $$$ scrambled eggs.

  Hello

  My only hesitation was with custom cable. It is possible that you can introduce enough impedance via the cable that you could not pilot the relay. However, the 6212 specifications can manage the relay, so as long as you build a cable that does not have a lot of impedance at the wheel, it should work properly. I hope this helps!

• solenoid USB 6212

  I'm trying to control a solenoid TTL using a USB 6212 and LabView.  I'm new to LabView and don't know if my code is correct.  I'm also not sure which way I'm supposed to use.  I appreciate all help.

  

  Hi biomedP,

  I had a look at your code, and it's a good start, but if you are simply trying to turn the TTL and you don't need a U16 to combat it. If you change your DAQmx, write to boolean (1 line), you can just write a real or fake (power) value to your solenoid.

  

  I don't know to what extent you are in this project, but to develop it further you can also add a sort of loop or some control values. I am attaching a file named "solenoid % 20Control-1_mod [1] revised.vi", which should point you in the right direction.

  You can also search in the help files for more information:

  Step 1: Go to LabVIEW and go to help.

  Step 2: Click on "Find Examples.

  Step 3: On the tab browse on the tree table click "Hardware Input and Output" > 'DAQmx' > 'Digital Generation' > 'write dig Chan.vi.

  Check out this example, it could solve other problems.

  On the channel, just check where the solenoid is plugged into your 6212 and change the input on the VI to match.

  Let me know if you have any other questions.

  Thanks, Owen.S

• Calendar for the acquisition of data on the USB-6212

  I am putting together a sound teaching laboratory.  The basic idea is to send a pulse signal that powers a speaker, and then the acoustic signal travels down a waveguide where it is measured with a microphone and sent to a data acquisition.  One of the important things here is that it is possible to measure the time of propagation of sound waves, so I need for data collection to occur at a time determined with reference to the sound output pulse.  I tried with a sound card, but there are number of milliseconds of random jitter between the writing and the reading of the sound card.

  So, I was watching the USB-6212.  On paper it seems ideal: 2 outputs and lots of inputs.  What I understand, it is possible to trigger analog outputs and data entered so that there is no jitter synchronization between them.  The only question is this: I was thinking about using 2 analog inputs: a reference which collects through a microphone/speaker system to serve a normalization to the second chain that collects through waveguide (see diagram).  The thing is that I need the "timing" on the 2 analog to be consistent and a jitter free so that it is possible to compare the phase of the signals that I collect.  This will be possible using this data acquisition system, given that the ADC is multiplexed between the channels?  There will be a delay between channels 2 and if so it will be known and deterministic?

  Thanks for your help...

  Ben

  Hi Ben,

  Cool application!  To answer your question-Yes, there is a delay, and it is deterministic. Something to note about the 6212 is that your rate of multiplexing will be determined by the clock to convert.  The clock to convert will operate at the faster pace of the device more 10us *.  In the case of the 6212, with Max sampling rate of 400kS/s (aggregation), your pulse will produce each ((1/400,000) 12.5us + 10).

  * 12.5us converts to 80 kHz, so at that point there, convert clock it simply runs at 1 /(aggregate rate). So to sum this up:

  From 0 to 80 kHz: there is a lag multiplexing 12.5us

  From 80 to 400: there is a shift of /(aggregate rate) 1

  In addition, you can also set this rate through the DAQmx driver.  "You can just use a property DAQmx Timing node' more' converted ' rate (or rate Maximum to determine the max).

  

  If it's a problem, I advise to use a device with simultaneous sampling - let me know if you have any other questions.  Take care!

• After the BIOS update can not startup Satellite C640 using USB key

  After upgrading my bios Toshiba Satellite C640-10F (PSC02E) to WIN 2.00, I can't boot the laptop using USB key, when I checked the BIOS with F2, I was stunned because the USB port connected to the laptop has been labeled as FLOPPY drive. Y at - there no possibility to downgrade the BIOS?

  Thank you

  Stand by.
  Set the BIOS to default and after restarting, use F12 to get into the boot menu.
  USB option is available there?
  What is saved on your USB device? I mean why do you want to use device USB to boot from it?

• NEITHER USB-6212 is not detected on the USB bus.

  Hello

  We use an NI USB-6212. We had installed it and works correctly on a test system.

  Now it does not work and what are the symptoms:

  -When it is connected to the USB the led next to the connector bus is not turned on.

  -MAX software does not detect the jury.

  Please, advice me on the steps to check if the Board of directors or eventually send it to repair.

  Thanks in advance,

  Diego.

  Hi Gary,.

  Following the expression "USB-Loader of Firmware" as a hint, I found the following link, related to my problem:

  http://digital.NI.com/public.nsf/allkb/2E02F8EC5D0197928625758C005FFD8D

  I got my computer the "USB-Loader of Firmware" service stopped, while it was "impossible to load the firmware information. Once started, it worked fine.

  Thank you

  Diego.

• The USB-6212 Setup error, invalid data

  Hello

  I am using a USB-6212 with LabVIEW 8.5.1 and DAQmx 8.7.1.  When I plug the USB cable in I get the prompt to install the drivers for it.  But I get a message that says that "these data are incorrect" and that the appliance has not been installed correctly.

  Any ideas?

  Too bad.  I reinstalled DAQmx and it worked.

• CAN transmit/receive same Port using USB-8473?

  Hi, I'm new to the CAN interface. I have a USB-8473 attached to my USB using Labview 11. I write labview routines to use the port, but since I don't have 2 of them, I thought just to transmit a data frame and read it on the same port for testing purposes. Currently I'm using transmission same reception Port.vi example, just to see, if it works, but when I run the VI and transmit data and then set the RTR bit to receive the rear frame, nothing is ever reported. Are there any additional settings I should do before using the device CAN 8473. I even tried setting the attribute of free reception as well and nothing ever gets the spokesperson. I use a baud rate of 125K on CAN0 flow. Can someone help me understand why it does not work?

  Thank you.

  No.... everything will be virtual (pass on 256, 257 reception). NI-CAN comes with two virtual ports internally interconnected. They are not exactly the same as a real port, but it can help you to carry out tests.