How do I keep a digital output from SCC DO01 from fluctuating states?

Background: Hooking an ohm-meter across a digital output from a SCC DO01 isolated optical switch shows that the resistance fluctuates and at times goes open circuit. It appears directly related to the LabView code where I'm writing to this digital line within a WHILE loop. The loop has a variety of other operations going on. These other operations, I believe, are causing this problem due to timing or something.
How can I improve the reliability of this digital output? There must be some method of establishing priority within a WHILE loop.
Really appreciate the help.
Hunter

Howdy, Justin
Thanks for your reply.
I've actually been connecting the meter across Vss and Vout. Actuating the digital output, I can see the state of the switch. Attached is the VI which involves this DO01, specifically, it's associated with the VFD RUN/STOP.
Since I sent this question out, I've actually gotten some help from Andy Watchorn of NI. This switch holds state much better.
All the best,
Hunter
Attachments:
VFD_ControlVIs.zip ‏120 KB

Similar Messages

  • How to I connect Sourcing digital output from My Interface Board to NI USB 6501 channel configured as Digital input

    When I connect an input to DI channel of USB 6501 card  from my board which has sourcing Output t, iIn the Off state it is not pulled down properly. The volatge on the port in is 2.1V -2.5V based on the pull down resistor on my board. I suspect that  it acts as a voltage divider.
    The state on the card is still show as "HIGH "state, even my sourcing output driver has a pull down  resister.  when I use this interface board for PCI mseries devices it works fine. Do the pull down resister on my sourcing output is not worth. Is this because of pull up resister 4.7k inside USB card 6501.
    USB 6501 specifications shows the Digital input accepts both source and sink modes. By default the card is in sourcing digital input mode. How do we can convert this in Sinkind digital input mode.
    Could anyone Please give your suggestions to overcome this issue .
    Thanks you.

    You really should not have both a pull up and pull down on the same line.  Really weird things can happen.  If you insist on having a pull down on your board, then I highly recommend putting a digital buffer chip between the DAQ and your board.
    Some boards with DIO have a pull up, while others have pull down.  You just have to watch the specs.
    There are only two ways to tell somebody thanks: Kudos and Marked Solutions
    Unofficial Forum Rules and Guidelines

  • How do you keep the browser heading from showing?

    How do you keep the browser heading from showing in the
    output? I did this once but can't figure out how!
    Thanks in advance,
    Rosie

    You asked...
    quote:
    Is there a way to shrink the application you're capturing so it
    fits within a given capture window rather than requiring scrolling,
    or would I have to go back to the application developers for that?
    (I realize that would shrink the size of everything on the screen,
    but in some cases, that would be worth it to be able to show a
    window without scrolling.
    If, by "shrink" ... you mean by using the AppSizer, the
    answer is "not really". You can configure AppSizer to a defined
    size, then with the mouse pointer double-arrowed on the "edge" of a
    window, right-click and your window-size selections will appear in
    the AppSizer "list" (that you set up) and can be selected there.
    But there is no re-scaling of the window contents, if that is
    what you mean, so the smaller window may now require scrolling.
    But keep in mind that if you use the recording option for
    "Software Simulation" > "Custom Size", you can then snap the
    application window to that size...

  • How do I keep my contacts separate from other users under the same Apple ID?

    First, we have a single Apple ID that we use to log into iTunes and App Store.  We also have separate iPads.  Recently, my wife purchased an iPhone 4S.  During setup, she entered the Apple ID we use.  What happened next was that all of my contacts were added to her phone.  Then she followed the instructions to import her contacts from her old cell phone.  When that was done, all of my contacts were deleted from her phone.  Worse, they were deleted from my Address Book on the iMac (my account) and my iPad.  How do I keep my contacts safe from being deleted?  Do we need to have seperate Apple IDs?

    Go to settings>iclod>then mark "no" in  "contacts" .

  • How can i transfer a digital movie from one apple id to another apple id?

    how can i transfer a digital movie from one apple id to another apple id?

    You buy it from that ID or ask the iTunes Store staff for assistance.
    (80985)

  • How can I keep a photo image from fading away on my tv using apple tv.

    How can I keep a photo image from fading away on my tv using apple tv?

    Thanks for you reply.  When I paint, I bring up the photo as you suggested.  I begin painting.  After about 10 minutes or so, the photo goes blank.  And, I have to start the process over again to get that same photo.  It interrupts the painting process.  I think it goes blank due to a sleep function.  I have gone into the Apple TV settings and turned off the sleep function.  But, this does not seem to work.  What can I do to keep the image on the TV screen permanently?

  • How do I keep my email password from remaining in Preferences? I want to enter it every time I get my mail. I upgraded to OS M Lion but it won't let me delete it from preferences. It's worked prior to using M. Lion. Any suggestions? Thanks!! Jen

    How do I keep my email password from remaining in Preferences? I want to enter it every time I get my mail. I upgraded to OS M Lion but it won't let me delete it from preferences (the password from Account Info). Once you enter the password, it keeps it permanently. i do not want that.  It's worked prior to using M. Lion. Any suggestions? Also, The other pressing issue i have is, I DO NOT want ANY mail showing in my inboxes when Mail starts UNTIL i enter that password for each account. Instead of creating different user accounts for the MacBook, it's just easier this way. Or is it? If this is a permanent thing, then I may switch back to Lion. I guess I shoud've waited until the kinks were out before installing (**** Mac-head!)
    Thank you all kindly for any suggestions & your time
    Regards,
    JC

    I DO NOT want ANY mail showing in my inboxes when Mail starts UNTIL i enter that password for each account.
    That is simply not possible with Mail, and never has been.  Anyone who uses your account can see all messages stored in Mail.  The only true solution is to not let other people use your account.  Let other people use the guest account, or if you share the machine with someone else, set up a separate user account for that person.  This will also solve the problem of remembering the password.  It will become a non-issue for Mail to remember your password if nobody else has access to your account.

  • How do I keep my macbook pro from automatically rearranging my folders and PDF files on my desktop

    How do I keep my macbook pro from automatically rearranging my folders and PDF files on my desktop?  It seems to happen a lot after I've hooked my laptop to my Thunderbolt in my office and then I unhook my laptop to go present at a clients of taking my laptop home to work.  Every once in a while if even places all of my folders and PDF files in the far upper left corner of my screen.  Needless to say, having to constanly rearrange my desktop is extremly annoying and would love to know what the fix is for this problem.  Thank you in advance for any help offered!

    Thanks for the tip "baltwo", unfortunately my desktop settings were already set to NONE.  I've had one of my IT guys here this moring helping me look through all of this and we're at a wall trying to figure out why it's doing this.  This morning when I docked to the Thunderbolt all my folders and PDF files are in the upper lefthand corner stacked on top of each other almost out of view.  If I go to settings, displays, and swith to mirroring, all the folders and files go right back to where they're set up on my MacBook desktop, but I lose the ability to utilize the entire screen of the Thunderbolt.  Very frustrating to say the least and after searching through and reviewing several forums, Apple is very much aware of this issue and seems to be keeping silent on the issue.  Hoepfully they'll launch a fix soon!
    THANKS again for the tip, it's much appreciated!

  • How do I keep my clipping path from shifting positions when I crop an image? [was: Question]

    How do I keep my clipping path from shifting postitions when I crop an image?

    The work path will remain positioned relative to the same underlying pixels after a crop.  Are you trying to position it relative to one or more image edges after cropping?  I don't think you can do that without moving the workpath after the crop.

  • How do I keep the screen light from going out after a few seconds

    How do I keep the screen light from going out after a few seconds on my iphone

    Settings>General>Auto-Lock

  • How do I keep the iPod Touch from people resetting it/putting it in DFU mode?

    I have iPod Touch 5th Gen. iOS 6.1.3 again.I'm having surgery this week.My question is How do I keep the iPod safe from people doing stuff like putting it in DFU mode,resetting my stuff,etc. because I don't want people to get on my stuff while I'm having 1 hour/30 minutes of surgery?
    Also,the surgery is just 1 hour/30 minutes.

    Besides locking in a safe or giving it to a trusted person, all you can do is use a complex screen-lock passcode to protect your personal information. Someone still can erase the iPod by placing in recovery mode and restoring via iTunes but they will have to enter your ID and password to use the erased iPod

  • I keep losing volume output from one of my tracks (Strings) in GarageBand. The volume has gone completely from the whole track when I send the song to iTunes-can you help?

    I keep losing volume output from one of the Tracks from my Song Project. The Strings volume, at first, was there but, when I sent the Song to my iTunes Library the strings volume was absent. Can any help? I've experience this before on another project, where for some unknown reason I've lost the Orchestral Choir volume. Sometimes, if the volume on a track disappears, I close everything down & then restart-this temporarily sorts it out but losing a track in the final mix is a different problem...please help!
    Many thanks!!

    soulkiss wrote:
    I need the vocals to be the same volume throughout.
    a good tool for that would be one of the compressors (a web search on "audio mixing compressor" will yield tons of information on using them)
    soulkiss wrote:
    It always exports at the audio level no matter what.
    http://www.bulletsandbones.com/GB/GBFAQ.html#tooloud
    (Let the page FULLY load. The link to your answer is at the top of your screen)

  • How can I keep my iPhone 4 from erasing everything when syncing to a new iTunes?

    How can I keep my iPhone 4 from erasing everything when syncing to a new iTunes?

    rajiv_c wrote:
    ...  This phone is a AT&T mobile, howver, I am using this phone without any jailbreak in India. ...
    Unlikely...
    See these discussions on that error message...
    https://discussions.apple.com/search.jspa?peopleEnabled=true&userID=&containerTy pe=&container=&spotlight=false&q=3194

  • How can I keep iTunes (10.5) from randomly starting up?

    How can I keep iTunes (10.5) from randomly starting up, just out of the blue?  I have disabled wifi sync to my iPad
    Has anyone figured out how to stop this annoying behaviour?

    I am sorry, but the Windows OS is totally unfamiliar to me. I'm a Mac.
    I did Goggle the issue and there are a number of support articles about this error message on the Internet. It seems to be a problem in your OS but like I said, I am not Windows knowledgeable at all.
    You either have to reregister the Windows installer or reinstall it - if I am reading any of this correctly.
    http://www.google.com/search?client=safari&rls=en&q=safe+mode+or+windows+install er+vista&ie=UTF-8&oe=UTF-8

  • HT1904 how can i keep my child self from the enternet

    how can i keep my child self from internet

    Hi Friend,
    I cannot know what you mean?
    If your meaning is you don't want your child connect to the internet you can forget the wifi connection of his/her iPod and then change the wifi password.
    You also can turn on Restrictions in Settings>>General>>Restrictions

Maybe you are looking for