24 v digital signal of the event from the host to the fpga power on/off

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• digital signals at the same time 16

  Hello

  I used a PXI-6254 adapter connected to the scb-68 and I try the digital output signal 16 on port 0 at the same time, so I chose to use the connector 1 port 0 line 8-23 but I can't outpul all the signal, he works for line 8-15, but for the rest, 16-23 does not work and I do not know the reason.i join 6254 board configuration and vi that I use

  Hello bobogool,

  I have taken a look at your code and noticed you write only FFFF, who would write only the first 16 lines, 0-15. Did you follow the first 8 lines of activity? If they work, I recommend that you add 8 extra bits, up to 23.

• Log down the accumulated power on/off time and the number of cycles

  Hello

  I use LabVIEW to build a test program to monitor the status of the 9 switches for a long period of time, and I need to connect the following data:

  How many times the switch turned on?

  How long has the switch turned on?

  How long the switch is off?

  I built a VI, but it seems really huge... So, how I can simplify it?

  Also is there any method to reduce the consumption of CPU resources? For example using the function 'to wait '?

  The data stored in the table are in this format:

  	Cycles counter	In time	Out of time	Buffer
  Switch 1
  Switch 2
  ...
  Dip-Switch 9

  Thank you

  David

  Your method would require repeating the log F-> T and T-> F routines in each case for ever value, structure, which can be a pain if you need to make a change to this routine.  Review the code that I joined.  The deal structure that I will contain an instance of every routine and the line of the 2D array that it applies to is dynamic and determined by which switch has been switched.  In addition, you can just the array of Boolean to the tip of needle of the index and read its value.  If set to True, then this was a F-> T transition, and so wrong it is a T-> transition F.  Another thing, you had connected the stop button to a terminal of the while loop stop.  When you have a structure of the event he's right there waiting for one, it's events to trigger it in action.  There was no event stop Stop button never actually stopped the VI.  So I added back a change of value of Stop event if it would work.  Let me know if that makes sense.

• Turn the remote power on/off

  Hi, I had a SCB-68 DAQ card. I would like to set up a high voltage ON OFF LabView options to be able to remote, turn on or turn off the high voltage to power cold cathode (the manual is attached, see pp. 24 and 25), but honestly, I don't know how to do it. Can anyone give me a tip please?

  NOR has the 6008 and for students, myDAQ. Other suppliers might be. Depends on what you might want to use.

• PCI6120-acquire an analogue signal on each edge of a digital signal

  Hello

  I have the card PCI-6120 and Labview 7.1.

  I have a digital signal of the encoder. Am interested in buying an analog voltage on each rising edge of the digital signal. In addition, I have another digital signal (index) between which I wish to make the acquisition.

  I tried several options. But I can't get on the digital dashboard via the hardware. Please help urgently. Alternative, I migrated to the acquisitions acquisition high speed analog and two digital channels and deteting change in software programming and then find the analog voltage. Which is heavy and inefficient.

  Kindly guide correct programming technique.

  Concerning

  Marie-Hélène

  Hi, Maud.

  Thanks for the update and I hope that your well today.

  Sorry for the delay but it was the Easter holidays!

  Thank you for your congratulations.

  I put your sampling frequency at the maximum rate of the clock source (encoder). The DAQmx driver uses the sampling frequency (and the number of samples per channel) information to perform various calculations and set sizes for the buffer.

  If you set it too high, nothing will happen-guests still just on each edge of the unit receive. If you set it too low, your stamp could be too small and you may lose data.

  Hope this helps,

• addition of digital signals

  I would like to create a digital waveform as instructions for a stepper motor. The task is to get the motor shaft turn at variable speed within each rotation. I tried to do this by dividing the rotation in a number of blocks that each run at a different speed, thus forming the concatenated rotation profile.

  The problem is that then the concatenation of the digital signals with the Append VI, I am unable to remember the different frequencies of the individual wave since the Append VI seem to require a constant interval between two pulses. Is it possible to explicitly concatenate accurate digital waveforms to form the desired profile?

  Try again with the modified VI.

• CPU limitation with the new power supply

  Hello

  I have a W510 with 135W POWER supply. Or to be more precise: A 6.75 @ 20V.

  I work at two locations, so I bought a generic 150W PSU with an adapter to mount the Thinkpad. The PSU is labeled 7. 5A @ 20V, so there should be no problems running the laptop.

  Yet, when starting, I get the "this power supply is too low for something something something battery charge" and strangled my i7 at 1.2 GHz, and not the 3.06 there are usually.

  If I boot from the battery and connect the connector of the power supply after Windows is in place, it works at full speed. And to charge the battery very well. Then of course, there is nothing wrong with the juice from the PSU.

  Thus, I suspect that the BIOS does something stupid. Can I override this somehow?

  Friendly,.

  A guy

  Maybe what the ThinkPad does not does not correctly detect the generic adapter. The central axis of the generic adapter does not give the right signal to the laptop power management firmware.

  Check in the ThinkVantage power manager what to say under the generic adapter 150 watts? He said 90 watts?

• time extraction of the digital signal

  Hello

  If I have digital signals from optical barriers and to extract the time (for a body that passes these 2 obstacles) how can I retrieve this day there using Labview.

  THX

  I have chata,

  Thanks for the answer, and I hope that your well.

  Here's an example I've done for a client, eager to discover the time of a flat section of its waveform.

  In your case, you must make a detection of pic on both codes, then less locations and a few x with the number of the sample to get the time.

  Let me know what you think.

  Kind regards

  James.

  PS Sorry code is a bit hasty.

• I'm trying to import video in Movie Maker and get the following message: M2U00017. MPG could not be imported. An interface has too many methods to fire events from. What do this mean and what should I do to allow me to import video files to edit?

  When you try to import video files in Movie Maker I get the message; M2U00017. MPG could not be imported. An interface has too many methods to fire events from

  -What this means and how do I fix it so I can import video files to edit?

  When you try to import video files in Movie Maker I get the message; M2U00017. MPG could not be imported. An interface has too many methods to fire events from

  -What this means and how do I fix it so I can import video files to edit?

  =======================================
  Movie Maker has problems with the .mpg files... best bet would be
  to convert the .mpg files before importing the .wmv format.

  Several formats are apparently compatible with
  Movie Maker, but the most reliable choices are:

  Photos - bmp
  Video - wmv or dv - avi
  Music - wma, wav, .wmv

  See the following article:

  Movie Maker 2 - Import MPEG files
  http://www.Papajohn.org/mm2-importing-video-MPEG2.html

  The following freeware can convert:

  (FWIW... it's always a good idea to create a system)
  Restore point before installing software or updates)

  Format Factory
  http://www.pcfreetime.com/
  (FWIW... you can uncheck
  all the boxes on the last screen)

  After downloading and installing Format Factory...
  Open the program and choose an output folder...
  (this is where you will find your files when they are
  converted)

  Drag and drop your video clips on the main screen...

  Select "At?" / OK...
  (the? is the format of your choice)

  Click on... Beginning... in the toolbar...

  That should do it...

  Good luck...

  John Inzer - MS - MVP - digital media experience

• Why not the preferences of the general calendar for "the day ends at:" only offers the possibility of 'am' and not 'pm '? And alerts for an event from 14:00 activate at the right time, but it's at 02:00.

  The "day starts at:" options correctly offer options of "midnight" through time "am" to "noon". Thus the "day ends at:" should have options starting with "midi" and moments of "pm" to "midnight", but instead, they are all time 'am '.

  And alerts for an event from 14:00 activate at the right time, but it's at 02:00. Maybe it's a consequence of the above.

  ???

  

• iMovie 10 - how to merge the events from different sources?

  I libraries iMovie on 2 hard drives and in iMovie on two iMacs files both running iMovie 10.1.1

  How can I copy all my events on a single hard drive but leave the events and projects on both iMacs?

  The projects will move at the same time or how can I move them as well?

  Thanks for any help possible!

  You can copy events from one library to another of in iMovie.  See:

  http://help.Apple.com/iMovie/Mac/10.1/#/mov3fa25bae7

  For more details.

  Geoff.

• frequency of the digital signal 6009

  Hello, how to generate the digital signal with frequency 50 Hz using NI USB-6009?

  You can take a look at this:

  Can I use a generation of impulses with the counters on the USB-6008/6009 case?

• Could someone tell me how to convert the digital signals in table 1 d of digital waveforms

  I use 9474 for drving an engine. for that I have uses 2 ports - to activate and another for running. These signals in the form of Boolean values.  I am to convert these signals to a table and since iam doing a digital waveform. but when iam connecting these to the module 9474, it show an error "source is a digital waveform and sink is 1-d array of digital waveform... any body can help in these issueee please...»

  Pop - up on the thread and choose Insert...

  Build the table.

  Ben

• 6008 USB shows the digital signal with nothing plugged

  So I really hope that's not too bad, I guess it is.

  I had problems reading of my digital USB 6008 entry this morning. Everything worked very well last night. Now all digital lines on the device to read a signal if it is has that anything connected to them or not. When I run the DAQ Assistant and test line, it shows a signal to each line. Then I did the joint VI (which should do the same) and it shows a constant signal in each line also. And I have nothing connected to the unit. Should reset somehow, or it is broken? Or am I just missing something?

  nckeeley,

  Look at pages 21 and 22 of the User Guide Ni USB-6008/6009 and specifications.  Digital lines have a traction 4.7 kilohm place resistance to + 5 V.  It will be a line of input opne look (and be) high.

  Lynn

  

• How to generate a digital signal on a negative slope of the clock?

  Hello

  I need to get out a finished length of the Digital pulse which will begin on request to the negative of the clock slope import (or export).

  I try to get the clock, exported or imported, but in any case, I can trigger output signal on the negative slope.

  What is the trick?

  Thank you

  Pawel

  What camera you use to build your digital signal.  What is the source of the clock?  You can attach your vi?  Normally, there is a function of data acquisition for configure the trigger where you choose the source of the trigger and the trigger slope (rising or falling), should be declining to a negative slope.