the pci-6238 digital output current

Similar Questions

• Route of the exits of the same meter, digital output

  Hello

  I'm not sure it's possible, but I will deliver the outputs of 2 meters (PCI-6602) on the same line of digital output.

  My 2 meters each generate a pulse train defined by frequency, cycle of dut and delay. I want to combine 2 pulse trains in a pulse train resulting. How would it possible if I can't deliver the outputs of the counters on the same digital line? What I have to abandon this idea and set the desired binary pulse train and release several times what a digital line?

  Thank you very much in advance for all your comments here.

  Cheers, Shaun.

  Hi Shaun,

  I do not recommend you to connect directly 2 outputs.

  Why not use a door or 2 entries? Connect the outputs of the meter to the doorways.

  If the impulses are well timed and synchronized (they do not appear at the same time)

  the output of the gate or will be a combination (in short, actually) of these pulse trains.

  Hope this helps,

• 6534 PCI for digital output finished generates a continuous output

  Hello

  I use 6534 PCI for my application, where I generate a digital output, a model finished variable length in a continuous loop.  the code runs without error, but I'm not able to justify the behavior of the map. I intend to use the code inside the while loop as a Subvi and if I change the 'command' at the entrance table during each call to the Subvi, the output should vary according to the directives of the entry of the 1 d array.

  But this is not the case, the loop displays the previous value that has been given to Scripture DAQmx. If the control panel is changed the output instantly does not change. It takes a while before the actual output changes. The length of the array command I give is also 88 & 133. When I realize that the output is wrong, I disable the DAQmx write vi by a structure of the case, I would expect an error that the output buffer is empty, but rather the old value is generated whenever the start Daqmx vi task is exectuted without.

  My tax any problem is that the output buffer is not get replaced with the new value, but I'm specifyng the size of buffer, performing a registration every time and start the task, waiting until the task is done and the task stop. Each stop & writing should delete and empty the buffer, but I did not understad what goes wrong.

  Also, I thought that maybe that orders are put in queue up in the output buffer, acual generation is not as fast as the call of the DAQmx write & start, but if that's the case then even if I stop the vi the generation should be until the buffer is empty, but that doent happen VI, break breaks of generation. the number of iterations is equal to the generated models. If anyone can help as to what could be the problem?  find code attached below.

  Hello

  If I understand the problem you are experiencing, then the reason for the typical behavior when you run the VI, it is that you are not clearing the DAQmx task whenever you intend to go for a fresh DIO write. You stop just the DAQmx task that seems however to clear the buffer on board space.

  With this post, I am enclosing a VI of the sample that should work according to your expected behavior. You can even call this VI as a Subvi and can use it to update the DIO port with a digital model of variable length fees. Another fact that I would like to point out, is that, once you have initalised one table, it is not possible to reduce the length of the array. You can only increase by adding new elements. According to your needs given that the digital model that needs to be updated will be of variable length, each time you cll the Subvi, you must create a freash of appropriate length and feed it as input to the Sub - VI. Inside the Subvi, according to the length of this array of entry appropriate buffer space is allocated.

  Do trust this solution help solve you the problem, otherwise do not hesitate to go back.

  Best regards,

  Sagar G yapi | Application engineer | National Instruments - India

• How to secure the wiring of digital output BNC-2090

  Hi, I'm working on using the digital output of data acquisition to control the digital DAC input, but I have a problem on how to fix the wiring for the digital output of the DAC. When I plug the cable into the hole, it is vaguely related. Any suggestions on how to fix the wiring are appreciated.

  Thanks in advance!

  It is a spring terminal.

  Try to push in the orange tab with a screwdriver while pushing in the thread.  Release tab to release the wire, and it must grab and hold the wire.  It may be a case involving Orange instead of push.  You should be able to understand.

• OR PCI-MIO-16-1 & NI PCI-6070E digital outputs to scb - 68 to the electric circuit

  I am designing a circuit and trying to the NI PCI-MIO-16-1 & NI PCI-6070E DAQ from the interface and the SCB-68 to my small circuit. The outputs are 0 (low) to 5 (high) Vcc. I underdstand the NI PCI-MIO-16-1 & NI PCI-6070E are identical regarding the outputs Digital 5 volts? Also the current will be enough to light an LED on a PS2501-4 or an Octocoupler of 4N38? If this is not the case, what I need to do to amplify the current. Or if you have any suggestions on the resistances, capacitiors, etc. Please let me know. Thank you!!

  You are right in your way of thinking! From a source of 5 volts, resistance of 500 ohms in series with your LED will provide enough drive in math class of ohm's law you have already provided.

  Paul C

• written boolean unique to the module of digital output or 9472

  I have a vi who writes in both modules of analog and digital, 9263 and 9472.

  I don't have a problem writing to the analog modules, but the modules digital (9472) gives me problems.  I want to write a single Boolean value, and he wants a Boolean array.  I was using the DAQ assistant, but dropped on it.  I'm probably not understand how to access the port correctly.

  I've included a partial copy of the code.  (LV crashed when I tried to create a snippet of the original code, so I had to copy it to a new vi.)

  You have not included the Subvi and if you want to generate a single Boolean value, it is absurd to use the Dig generate 1 D data and instance of DAQmx writing. Just use 1Line 1 point. Change the instance by clicking on the polymorphic selector under DAQmx writing. Select Digital > single channel > sample > Boolean. You can also use the DAQ Assistant by plugging in just a function table built between the Boolean command and the input of signals.

  You must also consider writing your code without globals.

• Problem with a digital output in the information of an analog input

  Hello

  I use a SCXI-1000DC module with a module of the SCXI-1600, SCXI-1531 module and SCXI-1163 module to receive an analog of an accelerometer signal and a digital signal.
  I claim that the accelerometer is constantly monitored, and the output is on when I want to, by an impulse that I comand in labview.
  I use a rate 25 k and a 12, 5K samples per channel on DAQmx Timing.

  I notice in DAQmx read, if I put a sample of hight by channel, the output is not there when I want to, and if I put a few samples per channel, I exit when I want to, but the program seems to be slow with the passage of time. I don't know how I can solve this problem!

  I'm sorry for my English, and I hope you can help me.

  Thank you

  Silvia

  Hello Silvia,.

  If you ask a larger number of samples, the labview diagram will stay longer in the DAQmx Read function, so the while loop runs slowly, and the digital output is updated less often.

  I suggest that you use 2 separate while loops: one for the analog input and the other for digital output, so that each loop might run at a different speed.

  Best regards

• What is a digital output (DO) good for?

  Actually, I wanted to use the outputs digital to move from a 24 VDC circuit (to turn on/off other devices etc.).

  But the current output outputs digital is so low that I have even impossible to pass an opto-coupler (opto isolator).

  That's why I wonder you use outputs digital for if you cannot use them to change anything?

  Of course, I can create a circuit MOSFETS or transistors to switch 24VDC power with the TTL 5V digital output signal. But I guess that most of you do not :-)

  And of course, I know that I can buy OR relay modules/cards. In fact, I have many digital outputs available and do not want to buy new modules/cards.

  Now, I can test and actually I get 10mA @ 5V on a digital output of NI 9401 (DIO), using the digital output to pass an opto-Coupler.

  It seems that the information contained in the data sheet are supposed to mean something else...

• NI USB-6501 digital output problem

  Hello

  I use DASYLab v.11 and I'm working on an interface with the NI USB-6501 where I'm putting a digital high on four ports.

  With the module "NOR-DAQmx - digital input", I managed to read the digital inputs of the ' NI USB-6501 ".»

  It's only the "NOR-DAQmx - digital output" I can't go to work.

  Using 'NI MAX' of NOR I have easily can emmit my four LEDs in the way of my High/Low ports.

  But not with DASYLab. When you use DASYLab tension on the ports remains unchanged.

  Now, I have a switch module, generating 5/0, directly connected to the digital output module, which is assigned to my four output ports for my task.

  I also tried with a module of relay between the two without success. I also tried to use 1.5 above instead of 5 without success.

  I use the option 'Bus (0/5 supply) for the module "Digital output".

  "NI Max", I configured the ports as "active drive.

  Any suggestion of what I might be missing?

  Thank you

  Martin

  Hmm, four ports, or four lines?

  A port consists of eight lines. Each line can control an LED (ON / OFF ~ 0/5V).

  If you have created a task to dig-out to control a port, 5V to this port sending sets all lines of this port to 'high '.

  You need to 255 for each line one too high port (at the bit level: 128 + 64 + 32 + 16 + 8 + 4 + 2 + 1).<- eight="">

  Or, you can create a dig out tasks to control four lines of a specific port.

  Four lanes of the EEG DAQmx DigOut module.

  Each of the channels of the modul will feed a single line of the task/device.

  Four switches will then turn the lights, or turn off.

  Make sure, that the 'bitposition' is the number of correct line (see picture).

• PXI-6120 digital output frequency

  Hello

  before that I have to post my question some technical information:

  LabVIEW: 2011.

  IO digital 8 PXI-6120.

  I read the user manual and search the Forum and there is no reference to the frequency of digital output (only for a meter).

  My question is what is the maximum frequency that I can generate outputs digital?

  The best I could do is 50 kHz using the example.

  Thank you

  Sokal

  
  

• USB-6211 - digital output not supported?

  Hi all

  I can't use the USB6211 device port... I use daqmx with Delphi7 API functions.

  First of all, I tried this:

  DAQmxCreateTask('', @TaskDO);
  DAQmxCreateDOChan (TaskDO, PChar('Dev1/port0'), ", DAQmx_Val_ChanForAllLines);
  DAQmxWriteDigitalU8 (TaskDO, 1, 1, 1, DAQmx_Val_GroupByChannel, $FF, @written, nil);

  I had an error in the DAQmxWriteDigitalU8:-200012 (= digital output not supported). (???)

  OK, I tried to disable autostart option based on DAQmxWriteDigitalU8 and insert a 'manual' start in the code:

  DAQmxCreateTask('', @TaskDO);
  DAQmxCreateDOChan (TaskDO, PChar('Dev1/port0'), ", DAQmx_Val_ChanForAllLines);
  DAQmxStartTask (TaskDO);
  DAQmxWriteDigitalU8 (TaskDO, 1, 0, 1, DAQmx_Val_GroupByChannel, $FF, @written, nil);
  DAQmxStopTask (TaskDO);

  Now, I got the same error in DAQmxStartTask:-200012 (Digital Output not supported, once again). (?????)

  I don't understand.. 'Digital output not supported "? USB-6211 has 4 lines! What is the problem?

  I want to just turn on and off the lines from code...

  -Cs George-

  Well, finally I figured out...

  Here is the solution:

  DAQmxCreateTask('', @TaskDO);
  DAQmxCreateDOChan (TaskDO, PChar('Dev1/port1'), ", DAQmx_Val_ChanForAllLines);
  DAQmxWriteDigitalU8 (TaskDO, 1, @dummy, 1, DAQmx_Val_GroupByChannel, @bitmask, @written, nil);

  Digital output lines are on port1! Corrected parameter.
  And the part of the interface of DAQmxWriteDigitalU8 had to be changed (in nidaqmx.pas).
  I don't know why, but the AutoStart (dummy) parameter in the DAQmxWriteDigitalU8 function is ignored: function always starts task automatically, regardless of the value of autostart. But this isn't a problem for me.

  -Cs George-

• trigger fast digital output

  Hello

  Here's my problem: I want to generate digital samples (10-bit) whenever I get a digital external trigger.

  This should be easy since I could still do it with the express DAQmxVI.

  But the switch can go up to 120 Hz and 16Hz, the generation is not fast enough. It seems like the writing of digital output configuration takes too much time on each loop.

  I don't know I'm missing something... can anyone help me on this or point me to some documents that I could use?

  Which would be very appreciated.

  Thank you

  R

  PS: I use a NI6351 USB card to get the external trigger on PFI0 and write the numeric data I want to send.

  I found the answer and share the link here:

  https://decibel.NI.com/content/docs/doc-25189

  Thanks to Nathan-P!

  Basically my USB6351 NOR is not redeclenchables, otherwise, you just add a property trigger Daqmx with redeclenchables true node. But with this thing, it works great!

  R

• Micro works not properly, read tab display or interface (HDMI) digital output device has been disconnected

  Original title: unplugged... HDMI?

  So I have a laptop Vaio of microsoft. The microphone that was integrated into the laptop was working fine until recently. No, I talked through my laptop was able to hear me except through Skype. I search through my laptop and say something like in the playback than digital output device or interface (HDMI) was disconnected. I know very well that I unplugged it. Can someone please?

  Hello
  1 did you change on your computer before this problem?
  2. you receive an error message?
  3. What is the exact make and model of your laptop?
  4. are you able to record from Microphone?
  5. which version of the operating system is installed on your computer?
  What version of the operating system Windows am I running?
  http://Windows.Microsoft.com/en-us/Windows7/help/which-version-of-the-Windows-operating-system-am-i-running
  Make sure that the Microphone settings are set up correctly.
  a. right click on the Volume icon in the notification area.
  b. go to recorders and right click on the empty area.
  c. Select Show disconnected devices and show disabled devices.
  d. right click Microphone, and select activate.
  e. Microphone right click and select Properties.
  f. Select the option use this device for the use of the device falling down.
  g. go to the levels tab and move the slider to the maximum level.
  h. click on apply and OK.
  See also:
  Tips for solving common audio problems
  http://Windows.Microsoft.com/en-in/Windows7/tips-for-fixing-common-sound-problems

• What is the current max on the digital output of a Terminal BNC - 2110

  Im a using a card of data acquisition of 6221 with a block of connection BNC-2110 connected to it. For the e/s digital terminal block provides an additional 5V input. Unfortunately I don't seem to find any information as to know if this provides additional current to the TTL signal or no training. Is there an internal pilot in the terminal block, or - if I need to connect external relays to the digital output - always connect a current driver in between?

  Thank you

  Wolfgang

  You can replay the 6221 and BN_2110 manual. The + 5V pins are outputs of the DAQ card - they are not entries.

  Yes, you will need external circuits if the external relays require more current than can provide the DAQ card.

• How to configure the digital output of the pci terjeta 6023E in LabVIEW 8.5?

  Hi, I have a card PCI-6023E and LabVIEW 8.5 and I need is to configure the digital output on the card, but did not.
  My idea is to get a port of digital data on the map and control by a pwm small dc motor.
  I wonder what are the modules with which you can do.

  Hi skudero,

  Probably the web page tracking and the attached example will work.

  PWM in software timing using a digital output line

  Concerning

  Charley - NIB - SR 1368189