Thanx. The video output from the splicing machine is of NTSC standard
and comes from a RCA jack. So can I use TV tuner card to save the
picture on PC and Display it in LabVIEW? If I can't use IMAQ/Vision
how can I see any picture in LabVIEW (linux)?
Viji
John, thanks for your response.
I did not intend to start a long discussion questioning the list policy.
IMHO the official policy of allowing short product/company notices has
worked well in the past to everybody's benefit.
Considering how carefully I've controlled access to this email address a
William Rance wrote:
> A Pure Mathematician(PM) and an Applied Mathematician(AM) were put in
> separate rooms and located 20ft from an Apple.They were informed that
> to reach the apple they had to jump 10ft, followed by another jump of
> half the distance (5ft) followed by subsequent jumps each of
Lai, Ann wrote:
> Hi,
> I am trying to use an XY graph to graph sets of data. The data are
> output inside of a while loop, 32 points at a time (x, y) where x is
> from 0 to 32 and y is from the points on the scope. I want to graph
> it so that there will be different lines. I tried to use the s
Hi John,
VISA has it's own Runtime Engine, here's the latest one, you might
want to check your VISA version.
http://digital.ni.com/softlib.nsf/954feaeea92d90918625674b00658b83/7e177d6e06db36b886256d720078da05?OpenDocument
Regards,
Ryan K.
There is an updated version of that driver for LV 7.x:
http://zone.ni.com/idnet97.nsf/9b2b33e1993d877786256436006ec498/99fd4a9bfc561ba7862568ab005fbb48?OpenDocument
You also might make sure that your VI isn't pointing to a dir which
doesn't exist on the new comp. Try just having it log to c:\ or
s
> A single VI of 1MB seems quite large and I wonder where all the bulk
> is coming from. It would be hard to believe it's all "code". Could it
> be that all your indicators (arrays, graphs, charts, etc.) contain
> huge arrays as default vaules? It might be worth clearing all,
> followed by "set cur
oops
Just reread my post - since you have 1.3V on the input, the current will be
more like 13uA.
The output driver of the daq card should have no trouble driving your
circuitry with an extra 10k load though
Cheers,
Brett
Software / IT Manager
Certified LabVIEW Developer
CPE Systems Pty. Ltd.
20
Hello Putnam,
> I've tried 100K resistors from the I/O pin to ground, but apparently the
1.3V is a solid signal level, not just a float.
I think your problem is the resistor value you're using - there's no way a
pin set up as an input should have a fixed signal level.
Assuming that you're using
Good Evening All,
I've run into a problem with a new customer's system. They have two "nearly
identical" systems, differing in their DAQ I/O cards, one having a PCMCIA card, the
other using the DAQPad-6020E. The problem lies with the system utilizing the DAQPad.
When this system is started ear
Here's one which received some interesting solutions in python and c, wonder
if someone would like to do it in Labview.
A Pure Mathematician(PM) and an Applied Mathematician(AM) were put in
separate rooms and located 20ft from an Apple.They were informed that to
reach the apple they had to jump 10
I've got an application which needs to have a DAQPad-6020E's digital
outputs start with a low output. What is happening is that as the
program is started and the program enters the digital port configure
vi, the Digital I/O pins appear to get set as inputs, which cause them
to go to approx 1.3V. Wh
> I defined a ROI (the line) and i took it out from the images but i can't
> find the way to create an empty array of specified sizes and then to copy in
> it, line by line, the ROIs i acquired.
You probably want to use Initialize Array. By default, it is for 1D
arrays, but you can grow it to se
Hi all,
> > As they did the DLL utility 'downshift', NI will probably eventually
> > incorporate this feature in their s/w
> Probably eventually might be quicker than you think. The link below
> lists the new features in 7.1, fourth on the list.
> And no, NI isn't just ripping off the idea,
C
Dear Wrath:
Do you know if your load is a constant impedance (or
resistance)? If so, all you need to do is assure a constant voltage
across the load. If the resistance is variable, you must know the
current AND the voltage. In either case, a simple feedback loop or
I appreciate both of your prompt answers. I am going to continue to
work with this for awhile but after playing with the examples for a
bit I'm still afraid I'm having trouble. I think i don't properly
understand the way the data from my DAQ is being output and the way
the analog graph is being up
> As they did the DLL utility 'downshift', NI will probably eventually
> incorporate this feature in their s/w
>
Probably eventually might be quicker than you think. The link below
lists the new features in 7.1, fourth on the list.
And no, NI isn't just ripping off the idea, it has been in
Hello Airo,
To verify that your hardware is configured and running properly, open
Measurement and Automation Explorer (Start->Programs->National
Instruments-> Measurement & Automation). Right-click on Devices and
Interfaces (under My System) and select to Create a New RDA device.
Select the IP Ad
Brian, how did you make the Access database accessible to multiple
users. I know there's an option in Access itself stating whether to
have the database "shared" or "exclusive". I always had it set to
"shared". I also set the option to "No locking".
I can't seem to find my Database Connectivity T
Thanks for all the feedback guys.
I am using UDL for connection between remote systems. ODBC DSN just
will not work with remote systems.
if your scenario is correct about multiple access from different
systems being succcessful, I'm pretty sure this ain't a problem with
the Access database. Anyon
Hi
>It would be interesting to have this work remotely,
or does it already do that?
If you mean looking at VI on other machine, then if
you can browse to it, it should already be working.
If you mean getting VI in memory on a remote machine
(using App>>App.AllVIs method), then it does not do it
(
in the graph properties you can either scale it to be that way or you
can have it do relative time and set it that way.
Hope this helps
Joe
Sorry, I only have version 6.0 of Labview and it won't open this. Any
way of saving as an old version, or sending me PDF of the diagram?
Thanks for your help.
Hi all,
As they did the DLL utility 'downshift', NI will probably eventually
incorporate this feature in their s/w
Robert
"Michael C. Ashe" wrote:
>
> PJM wrote:
> >Let me use this opportunity to mentioned that if
> >anyone has ideas to improve upon this tool, please
> >feel free to contact
How do I set the SE_SHUTDOWN_NAME privilege so that I can execute
ExitWindows on LabView 6.1 / Windows 2000?
KnowledgeBase document 2CTJ76G4 says that "a CIN is used to set the
necessary privilege": what function / DLL?
(The attachment to KB #2CTJ76G4 is for LV 7.0; I am running 6.1.)
PJM wrote:
>Let me use this opportunity to mentioned that if
>anyone has ideas to improve upon this tool, please
>feel free to contact me. ... PJM
It would be interesting to have this work remotely, or does it already do
that?
Very Nifty Utility, and almost as interesting for the Picture Control
I'm trying to build a basic counter in software - push a button and a
number increments - with a while loop (or any other way). Can't get
it to work. The loop clears and doesn't hold a boolean in a shift
register when the enable is cleared so I can't single step it. This
should be real easy stuf
Did you figure out how to fix this yet? I ran into the same problem
by using those "[...]". I got internal error 1722 instead.
Thanks.
Benha
I have Graph indicator and I am trying to change the units of time
axis (x) from seconds to minutes.
I wrote the small VI that increments the voltage at the output of the
power supply in steps of 100 V every 1 min.
After each time interval of 1 minute passes by the voltage is
incremented by 100V.
T
Swapping memory is relatively fast unless the OS needs to constantly
incremetally grow the swap file. Above, I have mentioned to make sure
the swapfile does not need to be dynamically resized.
Here is a relevant aplication note:
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/9c
About question 1:
I will have up to 10 or more indicators on the final fron panel of my
main VI. I thought of making subVI for each indicator but would that
be too many subVIs.
I guess they are not that big so it doesn't take much memory.
Regarding this topic of making subVIs can you remind what i
Rolf, that seems to be the problem... I can see from the system
monitor that Labview starts up with something like 14 or 15 MB
assigned and then climbs up to around 400 MB when I start running the
program. Once it gets to around 400 MB it seems to run fine.
Do you have any quick hints for what y
I want to stream data to disk for a long period, in the format waveform data
type - my problem is that the data files tends to reach the limit of 2 GB.
Is it possible to make files in LabVIEW greater than 2 GB ?
My OS is Windows XP and the disk is NTFS formatted.
I really appreciate your help on
Dear Karthik,
sorry, I was a bit unprecise!
There is no context menu for the property node, but if you click right
on the graph belongig to it on the front panel than you will get a
context menu.
There you have to disable "auto scale" for the y axis.
This should be menu item under y axis or simila
For the first question, you probably should create a seperate subVI
for each indicator.
About (2). There are many ways to stop the loops in the subVIs (You
seem to use a global variable). You could just use the numeric itself
and test for a value that never can occur during normal runs (e.g.
NaN,
Sorry, I don't have a solution, just a comment.
A single VI of 1MB seems quite large and I wonder where all the bulk
is coming from. It would be hard to believe it's all "code". Could it
be that all your indicators (arrays, graphs, charts, etc.) contain
huge arrays as default vaules? It might be w
Hi all
Beeing a yahoo user, I am a guilty party. While I kind
of know I was sending HTML email, I forgot It could be
a problem for others. It is quite easy to switch back
to text only email [in yahoo](select Plain instead of
Colors and Graphics in the compose window). I will try
to remember to do
Stephan,
Thanks for your comments, but I am afraid I do not follow your
advice. In the property node, I cannot see any context menu. I
previoulsy had several property nodes so that the user could either
autoscale or set the max and the min manually. Could you please
elaborate on your
Under LabVIEW "Help", click "Find Examples", then search for "XY
Graph." It shows examples of different types of plots.
Les
Hi Ian,
I can run your VI with success when wiring the chanel names in
directly. What is the incorrect result that you are seeing? What
property node is failing you? What is the error and result from that
node?
Deborah
Crashing LabVIEW when calling external code is usually the way you
know that some parameters are wrong. What function are you calling?
may be I can give it a try here.
All of the suggestions here are very valuable when calling external
code. Make sure you have the right calling convetion, use C st
No, if I could simply wire the queue reference to both sections of
code, I would have. That code is just the basic structure, I
"need/really, really prefer" to use Obtain Queue.vi for the full
program. Also, this is still growing and I need to figure out what is
the problem for future development
Is it possible that the OS is increasing the swap file size (What is
you OS?) due to increasing memory demands? Try setting a minimum swap
file size in the OS configuration. You should pick a value for the
minimum size slightly above the size after a few runs of the program.
You might also want to
VI used In Win2000 does npt work in XP
Hi,
when you used the property node did deactivate the feature "auto
scale" in the context menu?
If not, the values will be written to the y scale but immediatly
afterwards the y scale will perform an autoscale and you won't see the
result of thw writting of the property node.
Stephan
I am using LabVIEW 7.0 with a SCXI 1000 chassi which has an 1100
module for thermocouple measurements and an 1180 direct feed through.
The DA card is a PCI-6024E.
I have developed an application that is acquiring a total of 25
channels at a rate of 5000 hz using Daqmx. I am using continuous data
Hi,
I am trying to use an XY graph to graph sets of data. The data are
output inside of a while loop, 32 points at a time (x, y) where x is
from 0 to 32 and y is from the points on the scope. I want to graph
it so that there will be different lines. I tried to use the shift
register and build ar
Hi,
I am trying to use an XY graph to graph sets of data. The data are
output inside of a while loop, 32 points at a time (x, y) where x is
from 0 to 32 and y is from the points on the scope. I want to graph it
so that there will be different lines. I tried to use the shift
register and build ar
I found a VI that ships with labview(7.0)called continuous sound
output. the output of this is a sine wave or you can change it to
whatever you want.
Sorry cannot help more
Joe
Hello,
I am not aware of how this sensor works. However, I do know that with
FieldPoint, you will be reading in either voltage or current. All
that we have to do is a mathematical conversion from voltage or
current to our desired format.
The manufacturer of your sensor should have specification
Hello,
I would like to autoscale the y-axis in a X-Y plot with the minimum
set always to 0 and while the maximum autoscales. I tried to set
y-scale start and minimum (using the XY plot properties) but still the
y range minimum is set to the minimum value of the data. I would like
the y-axis scale
Ryan, this is a parallel thread, maybe we should keep the discussion
all in one place:
http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=137&HOID=5065000500448D0100&HTHREAD=000101700&UCATEGORY_0=_49_%24_6_&UCATEGORY_S=0
I am trying to output a continuous sine wave for a speaker, but I am
having difficulty making it continuous rather than looping the signal
for a given amount of time, which causes discontinuities. There is a
VI in the Labview examples titles Continous Generation, but it
produces a square wave. Is t
Well, maybe I don't understand your question exactly.
Do you mean between compatibility between LabVIEW version (6.1, 7.0,
7.1, etc.) or version of you program where you change the data
structure?
Generally, LabVIEW version are compatible (but I recall some small
incpmpatibilities many version ag
The wave file that I am trying to load is 90Mb. I just did a 30Mb
wave file and it worked fine. Suggestions, anything I can do to make
more robust?
I got this work with mpg, mp3, and wav files. what version of labview
and windows are you running.
Yes, the approach you use to opening a connection is exactly the
approach to take to get around that problem. Not sure what to tell
you about the other one except to maybe try it with a different DB.
Regards,
Ryan K.
Dan
follow this link
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/429e45271cfd683786256d87006b1eef?OpenDocument
here is th eimportant part:
"To load a VI from LabVIEW 3.x or earlier, you must use the LabVIEW VI
Conversion Kit, which is available free of charge from National
I have 6.1 and XP. My partner tried running and got nothing. Then he
ran an MP3 file, it worked, then the .wav file worked?
HELP!!!
What you need to is write a configuration file. There is a shipping
example on how to do this called write configuration settings file.
Joe
Your answer suggests even I change the structure, I can keep using the
same datalog file. This definitely helps. I do have to remember (i.e.
store) all the past versions (structures) in my program and use the
correct one to retrieve the item it was saved in, don't I?
Zuolan
Henry,
The VI which you posted is not executable, and doesn't make very much
sense.
A few tips:
1. Is this a SubVI? Or your main VI? If this is your main VI you
should have an overall while loop which controls when the averages are
taken.
2. You should use local variables instead of value pr
Hi,
I have a LabView program which was written and run in LabView Version
3.0.1. We are upgrading our test system to LabView 6.1 and would like
to port this program over to the new environment.
When I tried opening up the program in 6.1 I got a message saying the
version the program was written i
In LabVIEW, go to the FIND EXAMPLES menu. View the New Event
Handler.VI or the Old Event Handler.VI and either of these
will do if this is indeed what you are looking for... =0)
Viji,
The video capture card will be the device that you connect your image
source to and that is responsible for acquiring the image that you
want. Unfortunately National Instruments does not develop any image
acquisition device that will acquire from a basic RC jack. We do have
a board that wi
Yes, it seems that Outlook 2000 has a bug. I have set my address book up so
it should always send text messages to the InfoLabVIEW address. However,
Outlook ignores this setting (a MS bug). So, I have to use the drop down
Format menu to set the preference every time I send to InfoLabVIEW.
Someti
Are you trying to exit a subVI to get back to a Main VI? If so, use a
simple state machine. There is a template for this in LabVIEW. Put
the SubVI inside the state machine to be called.
For the subVI, under the VI Property "Window Appearances", customize
the window to Show Front Panel when called
Hai, Ingo,
I ahve one dobut in you script,
call oVI.Call2(sIONames, sIOValues, true, true)
in that "call2", it is in LabVIEW?
if it is in LabVIEW, here how to see that function name in LabVIEW.
how to configure LabVIEW?
please give the procedure.
Hello,
These are all great suggestions, and I would like to add to them by
mentioning that you can programmatically return whether the program is
being run as an executable or a VI.
To do this, call the application property "App.Kind". This property
returns whether the program is currently being
Works great, thank you for the help.
Thanks for all your help. I'm Not that great with IO. It works just
like you said. So now all I have to do is create a task then write
zero's to it at the beginning of my program. then it should work
correctly right.
thanks
Joe
Hi Ian,
You can wire a DAQmx Channel directly to the channel property node.
For that matter, you can wire a DAQmx Channel to any DAQmx node/input
that takes a DAQmx Task. LV does the conversion to a Task for you.
Deborah
I am using the GET NAMES.VI to get the Virtual channel names from MAX,
and I am calling them one at a time, starting with Channel 0. However,
it spits them back out in the order they were CREATED. I thought it
was my mistake but apparently if I look at the DAQ Channel Viewer
inside Labview, this is
I need to keep a constant power output on my electronic load. The
voltage and more so the current will be dynamic in order to keep the
power constant. I am new to Labview and am trying to write code to
accomplish this task.
Lewis
I am all too familiar with this feature, the list use to reject all my email
and send me a nice notice with links to sites to explain how to fix the
problem every time IT reconfigured Outlook, you wouldn't believe how hard it
can be sometimes to get Outlook to send Text Only ALL the time. So
It would be greatly appreciated if you could "configure" the InfoLabVIEW
server so it would reject non-text based e-mail and return them to the
sender with a message that they should resend as text. As you know, the
list frequently gets cluttered up with stuff like this:
-_=_NextPart_001_01C4
Similiar to 'Exit Sub' command in Visual Basic.
This off topic Discussion on Off Topicness is making me dizzy,
But as long as I'm here... I vote, and I vote head bangin' (Sabbath, VH,
Metallica)
and just to be complete, I'll reference the off topic of recursion
Wasn't Pluto actually Goofy's Pet? Whats up with that?
Rick M
-Original Mes
At 10:53 +0200 6/2/04, Rolf Kalbermatter wrote:
>Would it be possible to not post with HTML to this mailing list as it
>is a text mailing list?
The list software does it's best to strip all HTML from the mail. This is hard since
people use incorrect HTML so there is no sure way to do this. The
I'll have to vote for Floyd ,Allman Bros , Eric Clapton and Muddy Waters :-)
Dan Bookwalter N8DCJ
Hi-Stat a Stoneridge Co.
345 South Mill St.
Lexington, Ohio 44904
(419) 884-1219 Phone
(419) 884-4172 Direct
(419) 884-4195 Fax
[EMAIL PROTECTED]
> -Original Message-
> From: George Gatlin
At 10:11 AM 6/2/2004, you wrote:
might engender a similar warning as would a discussion of whether the
Grateful Dead were the greatest all time rock band.
I cast my vote for Floyd oh.. maybe that was rhetorical? :P
But I do agree with you Scott... the list is most useful as a place for
like
Yes, the provided VIs that work with wave files just like to treat
them as one enormous buffer, so that doesn't work very well for large
files.
Another approach would be to look at the wave file VIs and split them
apart. There's part that reads the header, and there's part that
reads the data. I
Thanks!! I don=B4t have an array, I had a table, but after reading your
answer I have changed it, and it works.
I "inherited" a program and project from some seniors who have since
graduated. They were using strain gauges to measure motion. They
developed this rather large DAQ program in Labview to acquire the
signals, compare them, calculate some things, It would take me
months to decipher the code.
I n
I agree with Dan's suggestion, but I have an additional question.
Are you reading large amounts of data, or small?
If large, then Dan's suggestion is sufficient.
If small, then I would follow Dan's suggestion, but also investigate
configuring your Reads and Writes to do I/O synchronously. (Ther
I am also getting this identical objheap.cpp error at the same line
number 592. I was editing my VI yesterday on a computer using winXP
operating system. Today, I am trying to bring it up on win2K OS and
it will not even open due to this error!! I would like to send the
code to NI but it has a
Thanks!! finaly I changed the table and I put an array, but your
solution also works
When we try to save the VI, it hangs and we have to reopen the
LabVIEW, also no modifications are saved. Size of VI is around 1MB.
There are no SubVI's in the top level VI. (LabVIEW 6.1)
Thanks for your response, Ryan. The only problem with that approach
is that I am getting data every two seconds and I would like the data
to go with the date of the file, i.e. I could potentially get about 10
seconds worth of data in the previous day's file. Not a big deal, but
I already have suc
At 17:50 -0700 6/1/04, Irene He wrote:
>If I understand correctly there is no discussion about
>open source allowed in this list, correct? What other
>topics are taboos?
For the record:
There is no list of topics that are "taboo". There may be encouragement from myself
OR others that a topic is
There are many things that could cause the behavior you see.
Is your filter settled before your perform your THD measurement?
If each harmonic component seems correct but the THD too high, it
could be because your fundamental tone is attenuated more than
expected?
Can you be more specific and expl
I am creating a VI in which I have approximately 10 front panel
controls that can be changed by a user. Instead of entering the same
values over an over again, I would like to provide the user the option
to save a set of control values that can then be loaded the next time
around via a drop-down b
j'utilise LAbView 6.1, windows 2000
Dear
Everyone,Thank you for all your replies and I appologize for any "trouble"
ormisunderstanding that I may have caused whatever that is.Yes, I
understand the list policy and will do my best to followIf I have
too much time, I will rearrange it...(sorry off-topic again,just can't stop
After upgrading from LabVIeW 6.1 to 7.1, I get a Microsoft Visual C++
Runtime Error
It states:
Runtime Error!
Program:...ogram Files\National Instruments\LabVIEW 7.1\LabVIEW.exe
abnormal program termination
I am using Windows NT, ver 4.0 SP 6.
That was kinda weird. Well anyways you can goto HELP>>Find Examples
and type in VI under the search tab. You will see Vi Server-Changing
another vi's properties. This is the same example I sent you. If you
have any other questions let me know. Thanks.
Hi,
You could use an activeX container (activeX controls palette) to embed
"windows media player" (or any other media player) into your app. Then
use an invoke node from the application control palette to control the
player.
Dom.
I changed the order of the elements but the problem still persists.
You said something before about checking to make sure that the
properties are included in the runtime engine, otherwise they will not
work. I tried to check but I could not figure out how to find that
information. I right clicked
Hai to all,
I want to call LabVIEW function from TestDirector. That TestDirector
using VBScript. is it posible? if posible can you give the procedure.
thanks for advance!
reddy
David;
This is a great idea. The '1%' that you left out has to be cost. Lets
face it...
PXI is expensive. Your approach has the ability to be a much more cost
effective
solution, Although depending on who is doing the custom HW design, this
could be
the trade off...
Its not my intent to start a
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