Full programme posted!! unable to read the frequency

my programe reads in off an lvdt transducer through a labjack my programe works up until the LJ stream graph process reads to "scaled data v's seconds" graph.where it graphs a sin wave (amplitude vs time)
for some reason the "freq. amp." analyser won't read the frequency correctly. when i run the programme it outputs a frequency of zero.
note: the amplitude is reading correctly
At the end i am looking to have a point on the x-y graph. it is the the output needed for my project.
note: everything works upuntil the scaled data V'S seconds graph
Attachments:
fullprogramme.vi ‏450 KB

The subvi that produces the output for the "Scaled Data vs Seconds" is not available from your upload--it appears to be your problem.
I attached a jpeg of a test I ran on the last part of your vi--it should work successfully. The simulated signal correctly produces a point on the X-Y graph for amplitude and frequency which is what you desire I believe. If you can find the problem in "LJstream graph process.vi" the output part should work correctly.
Attachments:
test.jpg ‏42 KB

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    note: the amplitude is reading correctly
    Attachments:
    problem.vi ‏77 KB

    Your actual data are not accessible and the sub-VI is missing. If you could re-post your VI with time data saved as default on your graph that would be helpful.
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  • Unable to read the frequency from this output sine wave of amplitude VS time

    my programe reads through a labjack programe works up until the LJ stream graph process reads to "scaled data v's seconds" graph.where it outputs a sine wave (amplitude vs time)
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    see both programmes attached..................
    Attachments:
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    LJstream_graph_processing.vi ‏46 KB

    I don't really see the utility of this VI, however, the variable "scan rate", of the "LJstream graph processing", it's an arbitrary value, why?...
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    David,
    It appears that in the past few days you have not received a response to your
    posting. That concerns us, and has triggered this automated reply.
    Has your problem been resolved? If not, you might try one of the following options:
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    http://support.novell.com.
    - You could also try posting your message again. Make sure it is posted in the
    correct newsgroup. (http://support.novell.com/forums)
    Be sure to read the forum FAQ about what to expect in the way of responses:
    http://support.novell.com/forums/faq_general.html
    If this is a reply to a duplicate posting, please ignore and accept our apologies
    and rest assured we will issue a stern reprimand to our posting bot.
    Good luck!
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    We had a problem with our inventory server processing .STR files a couple
    months ago - had to turn off inv. policies on workstations while we resolved
    it. Now it's resolved and we're running inventory again. We have a large
    number of workstations reporting this error:
    027: Unable to read the sequence number from the Workstation object
    They have no data in the DB, although they do have minimal scan info, and
    the last scan status date matches that of the sequence number error.
    I've seen this sporadically in the past and have been able to resolve it by
    initiating a full scan on the individual workstation. However, that does
    not seem to be making a difference this time.
    Novell's troubleshooting document basically says see if the server's
    running, and see if there's data for the workstation in the db. Then call
    tech support.
    Any other ideas?
    ~~~Nicoya...

    Jared wrote:
    > Nicoya Helm,
    >
    >> 027: Unable to read the sequence number from the Workstation object
    >
    > I am thinking that this can also mean a previous full scan was not
    > found. Or maybe the STR file name is bad.
    >
    > This information is stored here
    > HKEY_LOCAL_MACHINE\Software\Novell\Workstation
    > Manager\InvScanner\"STRFileName"
    The machines I'm troubleshooting have valid formats for their STR names,
    but that doesn't necessarily mean they are valid STR sequence numbers.
    Does removing the value in the reg key cause the STR file name to be
    recreated?
    >
    > Because imaging is used, it's possible that this information is matching
    > on some machines which could cause problems.
    I've verified that none of our images contain the c:\zenworks history
    folder, and we run a script that cleans up any zenworks items before
    sysprep (i.e. makes sure there's no registration info on the
    workstations, etc). Our imaging scripts also clear any ZIS info to
    avoid any duplication as well, so I don't think imaging would be causing
    this.
    > I believe 6x also has a hist.ini file like 3x inventory does, you might
    > delete the file also.
    Good tip about the hist.ini file, I didn't know about that. It does not
    solve the sequence number error, but it does seem to force a full scan
    of the system and cause the new scan to be stored in the DB, which was
    not happening before.
    Thanks!

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