Two PWM cont. train pulses with NI-6025

I need to generate two independent 300Hz continuous pulse trains with ability to change duty cycles (e.g. 80% for 100ms, and than 100% for 1s; should be able to go as low as 5% duty cycle). Can I do it with two 6025 counters?
I need two run two groups of DC motors (4 motors in each group) If that's not possible with 6025, what would be the most affordable solution? (I also have SCXI-1000 in my system, for data acquisition)

Dear Tour -- the 6025E card will support changing the duty cycle dynamically. The way you do this is to use the property node for the DAQmx channel and select counter output --> Frequency --> duty_cycle. This property is settable while running. Hence you can modify it in any way you please. If you would like to change any more properties during run time, look up help for the particular property and it will tell whether this particular property is settable while running.
About the question whether you can have two counters running independantly -- you definitely can. Use DAQmx to configure two tasks and configure both for counter output and modify their respective property nodes during run time.
Thanks - VNIU

Similar Messages

Samples Not Acquired on NI 660x or NI 6624 Devices When using pulse width, semi-period or two-edge separation buffered measurements with the NI 660x and NI 6624 on counters 0 and 1, some samples may not be acquired under certain circumstances.

In the DAQmx 9.4 Readme the following is stated:
Samples Not Acquired on NI 660x or NI 6624 Devices When using pulse width, semi-period or two-edge separation buffered measurements with the NI 660x and NI 6624 on counters 0 and 1, some samples may not be acquired under certain circumstances.
Could anyone elaborate on this? I am particularly interested in knowing under what circumstances this problem arises for the 6602 PCI devices.
How should I understand 'NI 660x and NI 6624 on counters 0 and 1'. Is it only a problem on counter 0 and 1 for the 660x or does this only apply for the 6624 devices.
/mola

Are there any NI Product Support Engineers out there who has an answer to this question and who are willing to share it with me?

How do I generate a pulse with a user specified puse duration, down time and repitition, and then out put to a graph?

How do I generate a pulse with a user specified puse duration, down time and repitition, and then out put to a graph and then to daq ports?
I used lab view in engineering class, but that was the extent of my usage and after fiddling around in lab view and looking on the web looking for solution, I could not produce desired results. My professor wants me to produce something that will output a pulse for a specified duration, then downtime for another specified duration and then repeat the process a specified amount of times.
I am using labview version 7.1
Thanks in advance.

Hello,
Are you using hardware (DAQ card) to generate this pulse or are you planning on doing this all in software. If you have a DAQ card in LabVIEW you can go to Help » Find Examples and then select Hardware Input and Output » DAQmx » Generating Digital Pulses » Gen Dig Pulse Train-Finite.vi. This will use a counter from your DAQ card to generate a finite number of pulses at a specified frequency and duty cycle. Give this a try, or let me know if you are not using hardware, and we can figure something else out.
Regards,

Calculate Frequency from a train pulse wave

I got a train pulse wave 0..24V at a sample rate of 1024 Hz during about 10 seconds (array of 10240) with a variable frecuency around 25 Hz (1500rpm).
I need to obtain an array with the same dimension (10240) with the exact calculated frequency. I know that from pulse to pulse all data in the calculate frequency array won´t change, but I really can get a good algorhym for that.
Could you help me?
Attachments:
Dibujo.bmp ‏1716 KB

Have you tried with the buffered frequency measurement using counters included in LabVIEW examples?
regards
crisR

Generate pulse with NI-6024

Hi,
can I generate defined pulses with the NI-6024 Card? I'd like to generate 100 Pulses with 0.27 Hz frequency.
I'm using LabView 7.1
Yves

You can add the attached vi between the 'Frequency control and the DAQmx function in 'Gen Dig Pulse Train-Finite.vi' in the examples. This will change the frequency slightly to one that will work. You can add a local variable for the 'frequency' control to see what it changed to. You have have to increase the number of visible decimal places to see the change.
Randall Pursley
Attachments:
Set Frequency.vi ‏14 KB

Two apple I.D., one with the .me email address I want, how can I delete it so that I can use that .me address on my other account?

I have two apple I.D., one with the .me email address I want, how can I delete it so that I can use that .me address on my other account
Or is it possible to transfer the purchases (apps) to my new .me account so that I can re-download them in the future without having to switch accounts?

crazyshark wrote:
I have two apple I.D., one with the .me email address I want, how can I delete it so that I can use that .me address on my other account
Or is it possible to transfer the purchases (apps) to my new .me account so that I can re-download them in the future without having to switch accounts?
You can't do this, and you can't transfer purchases between accounts. There is no conflict about using one ID for iTunes, iTunes in the Cloud and iTunes Match (the ID you've been using for iTunes) and using the other ID for iCloud.

If you registrate one Apple ID for each iPhone/iPad, you'll get 5GB on iCloud for each Apple ID, right? I have two iPhones and one iPad with the same Apple ID, why can't I get 5 GB fo each of them?

If you registrate one Apple ID for each iPhone/iPad, you'll get 5GB on iCloud for each Apple ID, right? I have two iPhones and one iPad with the same Apple ID, why can't I get 5 GB fo each of them?

Actually, everyone missed one point, when a device is priced, the cost of icloud storage space for that device is also included in it that is why they are able to give you 5gb each for each user ID, in nutshell there is nothing free coming with apple device purchase, it is paid for. What they are trying by giving only 5gb per user ID irrespective of the number of devices used is pure broadlight looting, they take money from you when you buy each device and give you nothing, This is a case of goods and services bought but not fully deliverd ie apple can be suied for discreminatory treatment towards it's users. I wonder why no one tried this yet in America where everyone sue everyone for petty things..... there is no one to take up this issue? . if tim got any love for the guys who shell out money for the devices his company makes, he should be implimenting this as priority before someone wake up from sleep and sue him.

I accidentally set up two accounts. One account with my old e-mail address which I've been using for years and has all of my purchases on it. Now I have a new account with my current e-mail address. How do I disable this new account?

I accidentally set up two accounts. One account with my old e-mail address which I've been using for years and has all of my purchases on it. Now I have a new account with my current e-mail address. How do I disable this new account? I need to disable the new e-mail address account so that I can add it as an additional e-mail to my old account. THEN, how do I make this new e-mail address my primary e-mail for this old account?

Did yoo go to Settings>iTunes and App Stores and sign out and sign back in?
Next see:
Frequently Asked Questions About Apple ID

I have two Apple IDs - one associated with iPad and iPhone and the other associated with iMac and MacAir. I am going to lose the former e-mail address imminently and would like to associate all devices with just one ID. How do I do this? Thanks

I have two Apple IDs - one associated with iPad and iPhone and the other associated with iMac and MacAir. I am going to lose the former e-mail address imminently and would like to associate all devices with just one ID. How do I do this? Thanks

Thanks - I guess it is like there were two of me!
I bought the iPhone first and it seemed natural to link it to the (work) e-mail address which was in constant use. The iMac for home use came next and it seemed natural to use my home e-mail address, particularly as I knew by then that I would lose the work address after my imminent retirement. The same logic went for the recent puchase of the MacAir. I am not sure what happened with the iPad (also a recent purchase) - iTunes seemed to puch me towards the same ID as the iPhone.
It is not a huge problem - just makes my persona look schizoid! Otherwise very happy with everything Apple.

I have two apple ID's, one with all my apps and one with only Mavericks. Will Mavericks update automatically if i'm not logged in to the apple ID I used to download it?

I have two apple ID's, one with all my apps and one with only Mavericks. Will Mavericks update automatically if i'm not logged in to the apple ID I used to download it?

Some things are mixed up here, seemingly...
I seem to have two Apple ID's attached to my e-mail.
An Apple ID is a valid email address, apparently. How can those be "attached to your email"... what email?
Facetime will not verify my e-mail address because it is associated with the other account.
This doesn't make sense. You can register multiple, even non-Apple-ID, email addresses and their aliases with FaceTime.
So, maybe you can explain your problem better - what you want and the steps you've taken and what you have so far. If something doesn't work, please tell the exact error message, too.

I have a problem with two PDF's when trying to open them through a link on a web page. The two PDF's open fine with Adobe on my own PC and on the server I have copied it to but when they are opened through a link on a web page (pointing to the server wher

I have a problem with two PDF's when trying to open them through a link on a web page. The two PDF's open fine with Adobe on my own PC and on the server I have copied it to but when they are opened through a link on a web page (pointing to the server where the PDFs open fine) I get an error 'There was an error processing a page. Invalid function resource' The other one just doesn't open at all. Can anyone help with this please?

Hello,
Are the pdf linked correctly in the website? Is this a public website? If yes, please post the link here.
~Deepak

How do I create a graph with two different y-axis variables with the same x-axis (therefor having two curves)?, How do I create a graph with two different y-axis variables with the same x-axis (therefor having two curves)?

How do I create a graph with two different y-axis variables with the same x-axis (therefor having two curves)?, How do I create a graph with two different y-axis variables with the same x-axis (therefor having two curves)?

Hi Libby,
Select all three columns of data. All three must be 'regular' columns, not Header columns, and the X values must be in the leftmost column.
Click the Charts button and choose the Scatter chart.
The resulting chart will initially show only the first and second columns of data, and the selection will have been reduced to show this.
Click the gear icon at the top left of the selection and choose Share X Values.
You should see a result similar to this:
Notes:
The values on my sample table contain a random element, so they have changed from thhe first image to the second.
The chart is as created by Numbers, with two edits:
Data points have been connected with curves, using the Chart nspector.
The curves were selected and their stroke increased to 2pts, using the stroke formating button in the format bar.
Regards,
Barry

Merge two PDF files into one with Adobe Reader

Does anyone know how to merge two PDF files into one with Adobe Reader. Is it even possible?
Thanks

If you've got a Mac and OSX you can do this in Preview. Make sure you can see the sidebar with the first PDF opened, and then drag the second PDF to the bottom of the last page in the sidebar. Also you can reduce the size of your saved file by selecting (or making) a Quartz filter to 'reduce file size'
Cheers

Can I use two HP Pavillion 23bw monitors with my MBP with Retina Display?

Can I use two HP Pavillion 23bw monitors with my MBP with Retina Display with good video quality? I just purchased them and am already reading about issues with non-Apple External Monitors being used with MBP with Retina. Plus I just assumed it given the power of the video card, but I can turn off the display to my MBP and extend the two HP monitors correct? I do realize they won't have the picture quality of the retina display but I would hope they look reasonable with 1080p
New to the Support Community so thanks in advance for any help.

This is an update on the question about the use of the Dell P2415Q 4K monitor with MacBook Pro 13" and 15" w/ Nvidia graphics card installed. The monitor works very well with both systems and is automatically identified when connected. The 13" machine with Iris Graphics defaults to 2560 x 1440 at 60hz. This was very workable, matching the Apple Thunderbolt Display for resolution. I was not able to set the display for full 4K at 3840 x 2160, even at 30hz. Just not enough horsepower with the basic Intel CPU with Iris Graphics. But make no mistake, the setup works well and the screen looks great.
The 15" with Iris Pro Graphics and the Nvidia GeForce GT 575M discrete graphics card also recognized the display and drove it at full 4K, 3840 x 2160, 60hz with no problems. Running in clamshell mode required a bit of fine tuning with the Apple display settings. But nothing major.
Due to a relatively small workstation, I selected the 24" version of the Dell monitor. If you are looking for a relatively large monitor with near "retina" resolution, the P2415Q is a perfect pairing for the MacBook Pro - and a terrific bargain. I paid $530 on the Dell website.

TS1424 Hello I have a problem in my phone The email request with Psoard forgotten I bought the phone by bringing the two years I have Vetorh with carton I want to help you thank you

Hello I have a problem in my phone The email request with Psoard forgotten I bought the phone by bringing the two years I have Vetorh with carton I want to help you thank you

Hi mylenebar!
Here is an article that will help you remove the desired photos from your phone:
iTunes: Syncing photos
http://support.apple.com/kb/ht4236
To delete synced photos and videos from your device
In iTunes, click the Device button in the upper right corner. (If viewing the iTunes Store, click the Library button in the upper-right corner first.)
Click the Photos tab in the resulting window.
Choose "Selected albums" and deselect the albums or collections you want to delete.
Note: To delete all synced photos, deselect "Sync Photos from" and, when asked, click "Remove photos."
Click Apply.
Thanks for coming to the Apple Support Communities!
Cheers,
Braden

Two PWM cont. train pulses with NI-6025

Similar Messages

Maybe you are looking for