I need to program a Hittite Fractional-N Synthesizer Evaluation Kit with a HMC702LP6CE an external YIG oscillator. Not sure how to use Labview to control the PLL.
I need to program a Hittite Fractional-N Synthesizer Evaluation Kit with a HMC702LP6CE an external YIG oscillator. Not sure how to use Labview to control the PLL.
Here is how to use the PLL. But I don't know of how to interact with that device
http://zone.ni.com/devzone/cda/tut/p/id/3781
And for thouse who don't know what a PLL is a free bonus link is here:
http://digital.ni.com/public.nsf/allkb/07BC8D77D4E9AE258625708B007CE74F?OpenDocument
and a second one on what that device is: http://www.hittite.com/products/view.html/view/HMC702LP6CE
Now we are all caught up to speed.
Sam S
Applications Engineer
National Instruments
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Firefox also makes regular backups of your bookmarks in a folder named bookmarkbackups in your personal settings folder. You can restore the backup to your new Firefox, but unlike importing the HTML-format file, it is a complete drop-in replacement, so if you have saved new bookmarks you do not want to lose, the export/import method may work better for you.
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To add to my original question: I had a 1st generation ipad and 32GB was more than enough storage now I'm having trouble making movies, adding media, etc. I have bought another 15GB of storage on I cloud. Can I put all of my apps on i cloud?
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I would be grateful for any help
sherrislpTo answer your question, you could remove your apps and then download them again as needed. Your purchased apps are part of what is stored in iCloud and purchased apps do not count against the allotment anyway - As far as I know.
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Hi,
I have an iPhone and I sync playlists to it from iTunes. (I have far in excess of 16GB of music/podcasts.)
What I want to do is permanently share my music library with all devices in the house, so I'm planning on buying a NAS server that has a built-in iTunes server. (I don't want to just use my computer to share and leave it on 24/7 because that is a phenominal waste of power.) That way all networked computers can just load the library under the 'SHARED' option in the left pane. However, this had me wondering about how I will continue to sync my music to my iPhone? I wondered if I will need to maintain a duplicate of the library on one of my computers, and then have my iPhone sync with that. Otherwise I'm not sure how it'll work.
Any help/comments/suggestions will be greatly appreciated.
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Not sure how i should go about creating this flash to accomplish what i need.
First let me start by saying my flash file is currently 740kb
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developed from another developer and trying to customize it to work
for what i need. The flash was bought from template monster. I'm
using actionscript 2.0 in the flash.
Is 740kb big for a flash file that is basically an entire
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accomplish some functionality.
The flash file i'm working on is basically like a brochure
for a client. It consists of "8" main pages, along with several sub
pages.
I have the following questions though.
1. Currently the navigation is on the left hand side, and has
a mouse over animation as well as sound effects with rollover and
being clicked. The mouseover effect just moves the text to the
right a little and brings it back to the original position..
However each button in is an individual movie symbol.
- Should I consolidate the navigation so it's one movie
symbol instead of 8 movie symbols on one page? Keeping in mind that
even if i do make it just 1 symbol i might need to add the 8
navigation movie symbols into that one to maintain the animation.
- Should the buttons even be movie symbols or is there a
better way this should be done?
2. Because of the text for each page, I was using adobes
built in scrolling component for the dynamic text boxes.
Considering there is more then 8 dynamic text instances converted
to graphic symbols.... Is there a more efficient way of doing this,
or is the above method just fine?
3. The flash file contains a photo gallery. Currently all the
images from the gallery are in the same flash file. I was thinking
it would be more efficient to load the images in the gallery from
external .swf files. However i'm not sure if that would be the best
method, and i'm also not sure how to correctly accomplish within
standards.
4. I would like to implement a contact form within the flash
so users can contact me.
5. I would also like to have a testimonials page where users
can submit testimonials. However i'm not sure how to create the
form, but i had an idea on displaying the text in the flash using
xml so it can be easily updated . Just not sure on the proper and
more efficient way of doing this.
6. I would also like an event calendar that displays within
the flash. Was thinking of having this loaded from an external .swf
file as well. Would like the calendar to be xml based so I can
update it myself. Don't need nothing advance, just something that
says "Busy", "Not Busy", and "Book" which would just take them back
to the contact form to book me.
I know many of you don't know who i am, but I would really
appreciate some assistance. Whether its sample flash files, links
to tutorials, advice, anything.
I really want to do all of the above, but also as i'm
learning i would like to make sure i'm doing the above in the most
efficient way possible and up to standards while also keeping the
size low. Would like to do it right the first time, so as i
continue making flash files in the future I'm not writing sloppy
actionscript coding, having sloppy timelines, and or having sloppy
structure in my .fla files.
Also i know alot of you are very busy people, and i'm not
asking for you to do the flash for me but any and all help will be
very greatly appreciated.
Thank you in advance for you comments, advice, and replies.
:)Wow, you're really looking to get your money's worth here. :)
I haven't read through your entire list of questions, but
I'll do what I can to help - others here will probably have
different ideas, so feel free to pick and choose which (if any - or
all) you want to integrate.
1. So far, my experience has been that the people that create
the templates on TemplateMonster have a pretty good handle on what
they are doing, and have done what they do for a pretty good
reason. Unless you are quite good at ActionScript, I probably
wouldn't make any major changes to the back end. After all, you
bought the template for a reason. If you want to move the buttons
around the stage, great - edit them to change the colors, great.
But to try to create a button array may be more than you want to
bite into here. That said, it can be done. I've done it. If you
want a sample of the code, drop me an e-mail and I'll send it to
you. FYI: I only do AS3.0 at this point. If your template is in AS2
then one of the other Flash gods would be better suited for code
samples.
1a. The buttons are movie clips for a reason - flexibility.
Leave them as movie clips unless you really like migraines.
2. I hate having to convert text to symbols, but sometimes it
is the most efficient (or only) way to do things. If you want to do
any tweens with the text, it has to be a symbol.
3. You can load the photos from external SWF's or you can
load the JPG's directly using XML. If you are using AS3, I know
that there is tight, simple integration with XML. I'd review a
couple tutorials on XML from some place like www.tutorialized.com
to get a feel for it. Also, look up "Working with XML" in the Flash
Help file (F1). Once you have decided on an approach, come back
here with specific questions and you will get good answers.
4. Doable. Search these forums for "Email from Text Box".
This was covered several times in the last couple of days.
5. XML is one option. You can even have XML give a photo of
the person doing the testimonial and load it all into a single
page. What you can do with this is limited only by your
imagination. This is a very broad question.
6. Someone posted a message about a calendar on here today.
Search for "Calendar" and I'm sure you will get some ideas from
there. Also (and again) www.tutorialized.com is a great resource
for general code and ideas.
You're right, we don't know you. And guess what? That doesn't
matter. We are equal opportunity abusers here. :) I mean that with
the kindest grin.
The things you have asked are very broad in nature and
therefore are quite difficult to give specific answers. We are
always happy to help you when you get stuck, and even to spend a
great deal of time walking you through a specific topic. However,
what you've asked here would take a six-week course to answer to
the level you will need. Grab some free code. Try it out. Play with
it. Break it. The Flash gods will rescue you. But remember, the
more specific your question, the better answer you will get.
I hope this helps (at least some). -
Need Expert's Advice - How to use LabView Efficiently and to increase Readability
My application is fairly complex. It is a real world testing applications that simultaneously controls 16 servo motors running various stress testing routines asynchronously and all at the same time. The application includes queues, state machines, sub VI's, dynamically launched VI's, subpanels, semaphores, XML files, ini files, global variables, shared variables, physical analog and digital interfaces and industrial networking. Just about every technique and trick that LabView 2010 has to offer and the kitchen sink as well.
Still I am not happy with the productivity that LabVIEW 2010 has provided, nor the readability of my final product.
Sometimes there are too many wires. Much of my state machines have a dozen or more wires just going from input to output, doing nothing, just because one or two states in the machine need that variable in some state. Yeah, I could spend alot of time bundling and unbundling and rebundling those values, but I don't think that would improve things much.
We have had a long discussion about the use or misuse of Local variables in this forum and I don't want to repeat that here. I use them sparingly where I think it is relatively safe to do so. I also have a bug whenever I try and copy some code that contains one or more local variables. On Pasting the code with local variables, the result is something other than what I expected, I am not sure what. I have to undo the paste and rebuild the code one object at a time.
I am also having trouble using trouble using Variable Property Nodes. When I cut and paste them, they often loose their reference object and I have to go back into the code and redo the Link To on each one. That wastes alot of time and effort.
Creating subVIs is often not appropriate when the code makes many references to objects on the Front Panel. Some simple code will turn into a bunch of object references and dereferences which also tends to take alot of work to clean up and often does not help overall readability in many cases. I use subVIs when appropriate, but because of the interface overhead, not as often as I would like to. My application already has over 150 sub VIs.
The LabView Clean Up Diagram function often works poorly. It leaves way too much empty space between objects, making my diagrams 3 to 4 24" screens wide. That is way too much and difficult to navigate effectively. The Clean Up function puts objects in strange places relative to other objects used nearby. It does a poor job routing wires and often makes deciphering diagrams more difficult rather than easier.
My troubleshooting strategies don't work well for large diagrams and complex applications. The diagrams are so complex that execution highlighting may take 20 minutes for a single pass. Probes help, but breakpoint aren't of much use, because single stepping afterwards often takes you to somewhere else in the same diagram. I can't follow the logic well doing this.
Using structures, I may have Case structures nested 5 to 10 levels deep inside some Event Structure inside a While Loop. Difficult to work with and not very readable.
All and all, I can make it work, but I am not happy about the end result.
I am hoping to benefit from some expert advice from those that are experienced in producing large complex applications efficiently, debugging efficiently and producing readable diagrams that they are proud of.
Can anyone offer their advice on how best to use the LabView features to achieve these results in complex applications? I hope that you can help show me the light.I'm not an expert but I'm charged out as one at work.
I am off today so I'll share some thoughts that may help or possibly inspire others to chime. I have tried to continually improve my code in those areas and would greatly welcome others sharing their approaches and insights.
Note:
I do refactoring services to help customers with this situation. What I will write does not represent what we do in a code review since our final delverable is a complete final design and that is beyond the scope of this reply.
I'll comment on your points.
dbaechtel wrote:
My application is fairly complex. ...
While watching Olympic figure skating competion slow-motion replays, I learned how the subtleties of how the launching skate is planted while entering a jump can make the difference between a good jump and a bad one.
In software, we plant our foot when we turn from the design to the development. I have to admit that there where a couple of times when I moved from design to development too early and found myself in a situation like you have described.
How to know when design is done?
Waterfall says "cross every 't' and dot every 'i' " while Agile says "code now worry about design latter" and Bottom-up "says "demo working why bother designing" (Please feel free to coment on these over-simplifications gang).
My answer is not much more helpful for those new to LabVIEW.
My design work is done when my design diagrams are more complicated than the LabVIEW diagrm they describe.
dbaechtel wrote:
simultaneously controls 16 servo motors running various stress testing routines asynchronously and all at the same time. The application includes ...and the kitchen sink as well.
Have you posted any design documents you have? These will help greatly in letting us understand your application. More on diagrams latter.
Anytime I see multiple "variations on a theme", I think LVOOP (LabVIEW OOP ) . I'll spare you the LVOOP sales pitch but will testify that once you get your first class cloned off and running as a sibling (or child) you'll appreciate how nice it is to be able to use LVOOP.
Discalimer:
If you don't already have an OOP frame of mind, the learning curve will be steep.
dbaechtel wrote:
Still I am not happy with the productivity that LabVIEW 2010 has provided, nor the readability of my final product.
Sometimes there are too many wires....going from input to output, doing nothing,... spend alot of time bundling and unbundling and rebundling those values, but I don't think that would improve things much.
Full disclaimer:
I used to be of the same opinion and even used performance arguements to make my point. I have since, changed my mind.
Let me illustrate (hopefully). This link (if it works for you, use lefthand pane to navigate hierachy) shows an app I wrote from about 10 years ago when I was in my early days of routing wires. Even the "Main" VI started to suffer from too many wires as this preview from that links shows.
Clustering related data values using Type Definitions is the first method I would would urge. This makes it easier to find the VIs that use the Type def via the browse relationships>>>callers. If I implement my code correctly, any problem I believe is associated with a particualr piece of data that is a Type def has to be in one of the VIs that use that type def therefore easier to maintain.
When I wrote "related data" I am refering data normalization rules (which my wife knows and I picked-up from her and I claim no expertise in this area) where only values that are used together are grouped. E.G. Cluster named File contains "Path" and "Refnum" but not "PhaseOfMoon". This works out nicely with first creating sub-VI since all of the data related to file operations are right there whe I need it and it leads into the next concept ...
When I look at a value in a shift register on the diagram taking up space that is only used in a small sub-set of states, I concider using an Action Engine . This moves the wire from the current diagram into the Action Engine (AE), and cleans up the diagram. The AE brings with it built-in protection so provided I keep all of the opearations related to the the Type def inside the AE I am protected when I start using multiple threads that need at that data (trust me, it may not make a difference now but end users are clever). So that extra wire is effective encapsualted and abstracted away from the diagram you are looking at.
But I said earlier that I would not sell LVOOP so I'll show you what LVOOP based LV apps look like to contrast what I was doing ten years ago in that earlier link. This is what the top level VI looks like.
And this is the Analysis mode of that app.
I suspose I should not mention that LVOOP has wizards that automatically create the sub-VI (accessors) that bundle/unbundle the clusters, should I?
Continuing...
dbaechtel wrote:
We have had a long discussion about the use or misuse of Local variables...I also have a bug whenever I try and copy some code...
If you can simplify the code and duplicat ethe bug. please do so. We can get it logged and fixed.
dbaechtel wrote:
I am also having trouble using trouble using Variable Property Nodes....
That sounds like a usage issue. Posting code to illustrate the process will et us take a shot at figuring out what is happening.
dbaechtel wrote:
Creating subVIs is often not appropriate... My application already has over 150 sub VIs.
"Back in the day..." LV would not even try to create a sub-VI that involved controls/indicators. I use sub-VIs to maintain a common GUI often but I do it on purpose and when I find myself creating a sub-VI that involves a control/indicator, I hit ctrl-z immediately!
I figure a way around it (AE ?) and then do the sub-VI.
Judging by your brief explanation and assuming you do a LVOOP implementation, I would estimate that app need 750-1500 VIs.
dbaechtel wrote:
The LabView Clean Up Diagram function often works poorly....
THe clean-up works fine for how I use it. After throwing together "scratch code" and debugging the "rats nest" I'll hit clean-up as a first step. It guess good enough on simple digrams and in some cases inspires me to structure the diagram in a different way that I may not have thought about. If I don't like, ctrl-z.
Good deisgn and modualr implementaion led to smaller diagrams that just don't need thrre screens.
dbaechtel wrote:
My troubleshooting strategies don't work well for large diagrams and complex applications....Can anyone offer their advice on how best to use the LabView features to achieve these results in complex applications? I hope that you can help show me the light.
Smaller diagrams single step faster since the sub-VI run full speed. I cringe thinking about a 3-screen diagram with multiple probes open ( shivver!).
Re: Nestested structres
Sub-VIs (wink, wink, nudge, nudge)
If it works you have prven the concept is possible. That is the first step in an application.
I hope that gives you some ideas.
Ben
Ben Rayner
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