Why does Labview load the vi.lib directory on start of a VI?

I am using LABView 8.0.1 and when I start a VI, it looks as if LabView is loading items in the vi.lib directory. Is this normal? I would not be concerned if I was using these items, but I am not using any of the libraries that are being loaded. Given the nature of the programming that I am doing, I need to see it I can stop Labview from doing this.

I guess the nature of the programming is misleading. It is more the environment. I have to make sure that the VI is not calling/doing anything that could show up as an entry in the security log. The things that i am concerned about are things like smtp mail. Is there a way to stop labview from loading items like this?

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Why does LabVIEW think the Analyser is not connected?

Hi All,
        this almost works but not quite.
       I have a specialised analyser from LeCroy called a CATC Protocol Analyser System Model 10k. It is for observing and supplying traffic on a SATA disc interface. LeCroy supply an automation library of ActiveX components for controlling it called SataAutomation.tlb. After registering this with a utility I found called ccrpregutil.exe the automation library became visible in labVIEW.
        As an exercise to prove that this can work from LabVIEW I have written a small vi, called Code Interface.vi on file and uses two of the (simplest) methods from within it. They should return the Serial number and the firmware version. The analyser is connected (via usb) to the computer and is powered up. Running the attached vi results in the following message. "Error -2147220975. Exception occured in CATC.SataAnalyser.1: Analyser device is not connected Code Interface.vi.".
So it thinks the analyser is not connected when physically it is. Does anyone know if I have to do something extra to "Connect" it. There is not a method in the .tlb file to do this. All the methods seem to assume it is connected.
The chances that anyone has seen this exact problem with this exact instrument are small but perhaps someone has seen something similar.
thanks
George
ps this is LabVIEW2009
Attachments:
Code Interface.vi ‏12 KB

Hi George,
I have been looking into this problem for you. First of all, I must advise you that it is not possible for us to replicate this problem since we do not have the required hardware. As a result, the support I am going to be able to provide on this issue is limited. I had a look into the error that you are receiving and it seems that LabVIEW can offer no explanation as it is undefined, it may be that this is a custom error message/code that was created by LeCroy.
I found this link to a Knowledge Base (KB) article that may be of use for you, it relates to communicating with 3rd party hardware in LabVIEW. Do you know if LeCroy provide another methodology you can try for controlling the device such as LabVIEW VIs or a DLL? Otherwise, I can only advise that a high success rate is usually achieved when using ActiveX with LabVIEW and that this issue may be due to a problem in the ActiveX library that is provided by LeCroy. For more information on ActiveX in LabVIEW, see this link. I will continue looking into this for you but I must reiterate that there is only so much I can do without having the hardware to recreate the problem.
Best Regards,
Christian Hartshorne
Application Engineer
National Instrument
Andrew McLennan
Applications Engineer
National Instruments

Why does labview forget the connections to the virtual channels in MAX?

I create a bunch of virtual channels in MAX - some with double assignment to a single AI port.
Context - a digital output controls a MUX to switch the inputs into the AI ports of my USB-6361(BNC) DAQmx; thereby allowing me to double up on the number of AI ports I can access (switching every 5ms).
I can run the code without any troubles. I have now completed my hardware set up and and am now testing the integration with the code. This is where things become a little unstuck.
Problem: some ports, over time, start displaying erroneous data that is not correct. It is not until I delete the virtual channel and re-create it in MAX, does everything settle and work. This 'bad' data is seen in the MAX test panels tab and virtual channels tab.
What is going on - should I bite the bullet and program all port assignments (channels) within my code?
Am i mistakenly killing a link between MAX and the DAQmx?

natashw already told you that it's expected behaviour when you leave the analog input open. There are two aspects to this:
1) The analog input amplifier is a high impedance operation amplifier. It's minimal stray capacitance is high enough that it gets charged through very small leakage currents in the amplifier input stage, but the high input impedance doesn't allow those capacitance to discharge quick enough to stay at a defined voltage. So your input is usually very slowly floating to one of the power supply rails depending what transistor side has a slightly higher leakage.
2) You only have one analog to digital converter. To get multiple channels there is a multiplexer than connects the different input channels to this single ADC. When the multiplexer switches between from a connected signal to an unconnected signal those stray capacitance at the ADC amplifier input has been charged to a certain voltage from the connected channel. With only the internal impedance of the amplifier to discharge this capacitance after the multiplexer switched to an unconnected input, the ADC will simply see the voltage that the stray capacitance has been charged to.
Having a low impedance amplifier input would solve that problem but create many more problems that would affect the measurement accuracy significantly.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Why does Labview allow a cursor in a indicator?

Hello,
Why does Labview allow the user to position the cursor with the mouse inside a numeric indicator? Users think that just because they can put a cursor they should be able to type something and enter data. Is there a way to disable/stop the user from putting the cursor in a numeric indicator?
Regards,
Kaspar
Solved!
Go to Solution.

Disabling the indicator satisfies your requirements, but this is funnier. It would be even better if I calculated the position of the indicator and the "entry point" and just kept the mouse from entering, but I have a project to finish...
Message Edited by jcarmody on 03-27-2009 11:58 AM
Jim
You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice
Attachments:
move.png ‏4 KB
test.vi ‏9 KB

Why does iWeb upoad the original photo in addition to the blog photos size

Hi,
why does iWeb upoad the original photo in addition to the blog photos size?
It's a waist of webspace.
JO

Seems a bit strange having to pre-prepare an image to be manipulated by a website program that can manipulate images.
1 example, I loaded a photobooth image into Iweb (30-40k) only to find it changed it to over 240k just so it can add rounded edges..
I would like to be able to drag over a few 1meg+ images and have Iweb just use the size it needs without keeping over 13megs of images that arent used.
but it doesnt seem to do it for all images, only the 1st one of the page (like in the blog pages) 1 image is there by default, I load in say 6 images, 5 have square borders 1 has a round one and only that one had its original big brother uploaded..
Thanks for the info, at least now i can stop looking for a menu option that isnt there

Does LabVIEW support the SNMP (Simple Network Management Protocol)?

I looked at LabVIEW 2014 online help for some info on SNMP.
A problem was posted in 1996 and updated in 2008.
Does LabVIEW Support the SNMP (Simple Network Management Protocol)?
http://digital.ni.com/public.nsf/allkb/4CD3625A939A77DE852564050047D3BD
This was addressed to LabVIEW version 4.
What version are we up to now?
Version 14?
One solution offered was to get the SNMP VI from Viodia.
Why should I have to spend another $1,000 for a VI from Viodia after spending $5,000 for LabVIEW Professional?
Come on National Instruments, offer up SNMP to go with your professional package.
There seems to be a lot of chatter about SNMP on the forums.
I’m sure a lot of customers would be happy to have an official LabVIEW VI for SNMP.

I find it unreasonable to expect that LabVIEW supports out of the box every network protocol that has ever been invented under the sun. You may find SNMP to be the most important protocol on the world but for most programmers it is a niche protocol that they may have heard of but never will happen to come across in their applications. It's in fact pretty low level for a very specific purpose of managing network connected resources.
On the other hand it is not rocket science either so can be implemented by someone with enough determination on top of the native network interface functions in LabVIEW. Is it a lot of work? Yes, you bet! Is it worth 1000 bucks! If you really need it and your own work hours cost anything more than a few cents per hour, most probably too! If you can live with an implementation that is supporting many but not all features of SNMP, the link on LAVAG is a very good and nice one.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

TS1702 My app store does not load the featured apps, also in charts. Everytime i open the app store, the screen remains blank. Im using ipad3, ios6.

My app store does not load the featured apps. The screen remains empty everytime I open it.

Saw this on another post.
Applecare Senior Advisor Txx Bxxx (I have his contact info in an email he just sent) just confirmed with me that the problem people are having with the App Store not loading is an apple issue with there servers, ITS NOT YOUR IPAD so don't go restoring it! It's not happening to everyone however but they are looking into it, its really hit or miss.
In the meantime ...........
The Complete Guide to Using the iTunes Store
http://www.ilounge.com/index.php/articles/comments/the-complete-guide-to-using-t he-itunes-store/
Can't connect to the iTunes Store
http://support.apple.com/kb/TS1368
iTunes: Advanced iTunes Store troubleshooting
http://support.apple.com/kb/TS3297
Best Fixes for ‘Cannot Connect to iTunes Store’ Errors
http://ipadinsight.com/ipad-tips-tricks/best-fixes-for-cannot-connect-to-itunes- store-errors/
Try this first - Reset the iPad by holding down on the sleep and home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons.
This works for some users. Not sure why.
Go to Settings>General>Date and Time> Set Automatically>Off. Set the date ahead by about a year.Then see if you can connect to the store.
 Cheers, Tom

Why does LabVIEW allow me to have 2 controls with same name

Here's a general LabVIEW question:
Why does LabVIEW allow me to have 2 controls with the same name in the same VI? It seems like this only increases the chances of confusion. Especially when someone is just looking at a block diagram (or documentation of a block diagram).
No other programming language that I know of allows this. I realize that uniqueness of name is not as critical in LabVIEW as it is in any text based language. For example, in a text based language, if I had 2 variables called abc and I wrote a statement
abc = 12;
the compiler would not know which abc was being referred to. In LabVIEW, if we had 2 controls called abc, the equivalent of doing an abc=12 is writing to a local variable (which is always linked to one of the controls) and there is no ambiguity. Still, someone looking at the code cannot figure out which abc is linked to unless he does a right click>>Find>>terminal (or a double click).
Even though I have never and never will name 2 controls the same, I think it would be a nice constraint to see enforced by LabVIEW.
Any input from NI engineers on this?
Message Edited by S G on 12-18-2007 03:38 PM
S G
Certified LabVIEW Architect, Certified TestStand Developer, Certified Professional Instructor
Attachments:
Trial1.JPG ‏21 KB

I know when you copy and paste a control or indicator, LabVIEW automatically increments the label. But since you can hide the label, and show or hide the caption, there must be another mechanism that LabVIEW uses to keep track of all the controls. I thought I remember back in the "old days" (ver 6 or 6i) LabVIEW would give you an error if you tried to make two controls with the same name. Perhaps that was LabWindows/CVI.
I don't know where the index is actually stored, but if you look at a property node linked to the Pane, you will see an array of references to the controls and indicators. Since the references are stored in an array, I assume that any local variables are tied to the index of that array. Since the labels themselves are properties of the control, I guess there's no reason to limit what that label is. They all have a unique index number.
Interestingly, this array of references grows from the beginning. That is, any new control or indicator is put at index 0, not the end of the array.
B-)
Message Edited by LabViewGuruWannabe on 12-18-2007 08:45 PM
Attachments:
Labels.png ‏12 KB

Why does Match list the iCloud status of iTunes purchased songs as "Exceeded Limit"?

Why does Match list the iCloud status of iTunes purchased songs as "Exceeded Limit"?

because you have loaded over 25,000 songs to the icloud library. to find out exactly what is in icloud from itunes match follow these directions to create a blank itunes library and load only the itunes match songs from icloud.
1. You will need to know the location of your iTunes library for later, the default is under music under your username. If its not there find it and remember where it is for later.
2. Then you have to exit iTunes and create a new empty library. To do this hold the option key when you open iTunes. Choose create Library on the pop up dialogue. Create the library anywhere on your system, you can delete the entire library once you have completed your iCloud changes.
3. When the library opens in iTunes it will be empty. Click on iTunes Match and click the start button. after it finishes all of the songs on your iCloud match account will be listed under music.
if you want to delete some or all songs from icloud so you can re-sync itunes match to show the songs in your current library fowwow this.
4. you can select up to 1000 at a time and delete them.
5. when you have deleted what you want, close iTunes and open again holding the option key and navigate to your original library, usually in the music folder under your username. You should be all set and can click iTunes match again and your account will be populated with the ones in your current library.
6. You can navigate to the temp library you created in finder and delete it as it is no longer needed.

Why does extension loader check extension's certificate during each loading?

Hello,
We are having some problems with an expired code signing certificate.
We sell a commercial extension which is signed with our code signing certificate. Recently our certificate expired, and we started to receive reports that our extension had stopped working in CS5.
It looks like CS5 checks the extension's certificate not only during installation, but also at each loading.
This behavior looks like a serious bug in Creative Suite extension loader since all certificates will expire sooner or later, and this means that all extensions are doomed to stop working at some point, unless they are timely updated.
Why does CS5 check the certificate at each start up? This doesn't make sense at all, certificates are only used to check that the code is authentic during installation. An authentic extension cannot turn into malware after installation, so there is absolutely no point in checking the certificate after installation.
Can someone from the CS SDK team comment on this issue? This turned into a major problem for us.
Thank you in advance,
Anatoly Paraev
PixelNovel

Anatoly, let me summarise my thoughts/findings on this:
- Your extension's signature is invalid now that your certificate has expired (as you have reported)
- Your extension's signature is not timestamped with a timestamp certificate. A signature without a timestamp is only valid till the signing certificate expires. A signature with a timestamp is valid until the timestamp certificate expires, typically a much longer period.
- As you can infer from this, Extension Builder does not create timestamped signatures and does not give any warning about this. Apologies that we failed to anticipate this problem during CS SDK and Extension Builder development. You will probably agree this is not good enough, and I have filed a bug (#2916071) to ensure this is dealt with in future releases.
As I mentioned earlier, extension signature validation is performed on extension load to ensure an extension's footprint has not been maliciously modified since installation. I think it is very unlikely that we can remove this signature validation for security reasons, nonetheless I've started a conversation about it internally and can let you know the outcome.
To help your users now, I think you will need re-sign and re-deploy your extension with a new certificate. So you can timestamp the signature, use ucf.jar in the Packaging and Signing Toolkitto sign the extension rather than Extension Builder. Pass the argument -tsa=<your_chosen_timestamp_server> to ucf.jar when signing and check the signature is timestamped

When I change size of icons or icon vs list display, why does it affect the whole computer?

When I change size of icons, or icon vs list display, why does it affect the whole computer? In some folders I want to see a list and others I want to see an icon and I don't need a large icon in all folders. I used to be able to set each folder separately in the old OS. How do I fix this?

I can hilight an item, go to the finder/file/getinfo but there is no box next to icon view.
I can go to view/options and adjust the icon size etc, but this applies to every folder in the whole computer. I need varied options in different folders, i.e., I want to view images as icons and text as text. I have to change it every time I open a folder. I used to be able to set it per folder in the old OS.

Firefox does not fully load Barclaycard Authentication site. It loads as far as asking for certain letters in my pasword but does not load the "Submit" button so I cannot continue with my purchase and have to switch to IE8 browser to purchase anything ov

Firefox does not fully load Barclaycard Authentication site. It loads as far as asking for certain letters in my pasword but does not load the "Submit" button so I cannot continue with my purchase and have to switch to IE8 browser to purchase anything over the internet. Any clues?
== This happened ==
A few times a week
== Couple of weeks ago

Your UserAgent string in Firefox is totally messed up by another program that you installed, and Barclays doesn't know you are using Firefox 3.6.6 - it probably looks like IE 6.0 to that website.
[http://en.wikipedia.org/wiki/User_Agent]
type '''about:config''' in the URL bar and hit Enter
''If you see the warning, you can confirm that you want to access that page.''
Filter = '''general.useragent.'''
Right-click the preferences that are '''bold''', one line at a time, and select '''''Reset''''',
Then restart Firefox

What is cookies.sqlite and why does it slow the start up of mozilla by a minute or so. I found it and deleted it,fixed the problem, but it reappears eveery time I restart mozilla.

what is cookies.sqlite and why does it slow the start up of mozilla by a minute or so. I found it and deleted it,fixed the problem, but it reappears every time I restart mozilla.

AVG reports these sqlite cookies each time firefox starts. they usually belong to tribalfusion or some other tracker. How do I block them in the first place. I thought firefox is a safe browser. Did not have this problem until I upgraded to 3.6.

Why does iPhoto change the sort order of the photos in my album when I attempt to share via Photo Stream?

Why does iPhoto change the sort order of the photos in my album when I attempt to share via Photo Stream?

Did anyone find a good way to sort the shared albums better, so that the ones you share with can better find their way around.
You can arrange them manually in an album, select all and use the Photos ➙ Batch Change ➙ Date to menu option and check the box to add a set interval between photos. That will let the photos be sorted by date and be in the order you want:
OT

I have an iPod touch 4th gen. why does it show the wrong album art only on my ipod and not on itunes? Is there any way I can fix it?

I have an ipod touch 4th gen. why does it show the wrong album artwork on my ipod and it's fine on itunes. why is that and is there any way to fix it? please help!

I think it can't find the right or any artwork and ends up putting junk in there.
And can happen with artist and other tags.
probably fine with commercial media but otherwise....? I think you have to manaully go in and edit
I also don't like how it handles and stores non-Apple iTunes store content.

Why does Labview load the vi.lib directory on start of a VI?

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