Generate delayed triggered pulse. Already have used both counters.

I need to generate sequence of 3 pulses. Each one is triggered with previuos one and has certain width. I have successfully used 2 counters on my 6713 card and I am wondering if there is any way to generate the third pulse. I thought if there was anything useful of another output signals such as GPCTR_SOURCE and GPCTR_GATE. For GPCTR_OUT I have used NI Visual Basic examples with components which work well. But I could not figure out how to program GPCTR_SOURCE and GPCTR_GATE or PFI signals with Visual Basic. I could use either components or DAQ functions but I could not find example.

Greetings,
Unfortunately, the other GPCTR lines (source and gate), when used in a counter context, are for input only. You may want to consider adding a counter (NI-TIO) board to your system:
PCI-6601
PCI-6602
Good luck with your application.
Spencer S.

Similar Messages

HT1245 Why does my caller I.D. photos show as a small thumbnail in the upper right corner and not full screen? I have used both photos I have synced and photos I have taken, yet others have full screen photo I.D.'s.

Why does my caller I.D. photos show as a small thumbnail in the upper right corner and not full screen? I have used both photos I have synced and photos I have taken, yet others have full screen photo I.D.'s. I have looked onlime at several threads and there are no real answers as to what I need to do or am doing wrong.

I am also having this issue.
I've just spoken to someone in the Apple Support Centre who advised me that since the product is in beta, he is unable to assist. I wanted to find out whether someone was able to delete the data for me, or 'reset' the photos app somehow. This apparently cannot be done. He suggested I provide feedback via the feedback page, which I will do, but to be honest doesn't fill me with a lot of confidence in the issue being fixed.
I also deactivated the service and waited the 30 days for the pictures to be deleted - this should have been completed in mid-January. Instead, my iCloud.com Photos page is now showing the photos that should have been deleted as grey squares, just as you described. I am also unable to delete these photos; every time I try, I get the same message about a server error.
I am also unable to disable the service by enabling and then disabling it on my iPhone. Each time I have tried this it hangs on uploading for several hours, with the progress bar not moving at all. When I disable it on my iPhone, the web app remains unchanged.
If anyone has had this issue and has managed to fix it, PLEASE share your wisdom. I am out of patience!

My iPad air won't charge. I have used both the charge cord that came with it, and a second that I bought at the Apple store. I have used both the charger that came with the iPad, and others that are working with other iPads. It charged yesterday.

My iPad Air will not charge. I have used its original charge cord, and a second Apple lightning cord. I have used the original charger and others that I have confirmed do work. It charged yesterday, no problem.

Before going to the Apple store carefully examine the lightning port to make sure no fuzz or other foreign stuff has gotten in there. There are not that many things that can prevent an iPad from charging. You've tried a different cable, different charger and hopefully the reset suggested by Barry in the previous post. Check for debris and if the port is clear Make an appointment at an Apple Store to have your device examined by a technician. Or contact Apple Support.

Purchased new iphone 4 yesterday and I already have used 73.81 MB of my 200 and I have not done much of anything. What uses mb ? does it use mb every time I play the game? when I am reasding my emails does it use MB ?

I purchased an IPhone 4 yesterday and I have already used 73.81 mb of my 200 mb. I have only read my emails and downloaded one game from App Store. Does it use MB everytime I play the game? does it use mb the whole time I am on my emails. What uses MB?

Playing a game probably won't use much, if any... Downloading all those cool games and apps could have easily used that up, however.
Use WiFi whenever you can or download apps to your computer, then sync them to the phone with the cable.

Why css3 property animate , rotate page in from front not working in safari 5, but animate property is supported in safari 5 and i have used both "-webkit-animation" and "@-webkit-keyframes". Plz if any1 have any solution ? thanks in advance

-webkit-animation: rotatePageInFromRight 1s cubic-bezier(.66,.04,.36,1.03) 1 normal forwards;
@-webkit-keyframes rotatePageInFromRight {
0% {
    -webkit-transform: rotateY(-90deg) translateZ(5em);
          -moz-transform: rotateY(-90deg) translateZ(5em);
          -ms-transform: rotateY(-90deg) translateZ(5em);
          -o-transform: rotateY(-90deg) translateZ(5em);
    transform: rotateY(-90deg) translateZ(5em);
    opacity: 0
30% {
    opacity: 1
100% {
    -webkit-transform: rotateY(0deg) translateZ(0);
          -moz-transform: rotateY(0deg) translateZ(0);
          -ms-transform: rotateY(0deg) translateZ(0);
          -o-transform: rotateY(0deg) translateZ(0);
    transform: rotateY(0deg) translateZ(0);
    opacity: 1

Post in the developer forums instead > Developer Forums: Apple Support Communities
This is the Safari for Mac OS X community.
Be aware, Apple no longer supports Safari 6 for Windows in case you are not aware > Apple apparently kills Windows PC support in Safari 6.0

HT4484 i want to change my apple ID as the one i have (the email address) has been inactive for a while. When i enter my new one it is saying i cant use it as i already have used it as a rescue address. how can i delete is as a rescue address?

where can i find the settings to change my rescue email on my mac?

The Apple Support Communities are an international user to user technical support forum. As a man from Mexico, Spanish is my native tongue. I do not speak English very well, however, I do write in English with the aid of the Mac OS X spelling and grammar checks. I also live in a culture perhaps very very different from your own. When offering advice in the ASC, my comments are not meant to be anything more than helpful and certainly not to be taken as insults.
Manage your Apple ID -
https://appleid.apple.com/cgi-bin/WebObjects/MyAppleId.woa/

How to use multiple counters in the 6602 to measure cycle length, calculate delay and generate triggered pulse.

Hi,
I need to measure the cycle length of a pulse, calculate a delay based on this value, and then generate a triggered pulse with that delay value. The input and output pulses will be continuous. The best case would be to use the cycle length from one pulse in the calculated delay for the next pulse. One of my biggest problems has been getting the calculated delay value into the pulse specs.vi for the triggered output.
This output pulse will be used to trigger an IMAQ video acquisition; therefore, the solution to this problem will be part of a larger video acquisition application. This has posed a problem, in that accessing the counters has interfe
red with the triggered video acquisition.
Any suggestion will be welcome.
Thanks
Dave

Filipe,
The overhead is the problem I'm trying to get around.
Specifically, what I need to do is to generate an output pulse after a trigger pulse, which is a given percentage of the cycle length. The input pulse is from heart rate, so it will have some variance, and the output pulse will be at a stationary point in the cardiac cycle. For example, for an input pulse of 2 Hz (500 ms) the user would likely request the output pulse be delayed by 75%. Therefore, the generated pulse will have a 375ms delay after the trigger.
In the past I have had hardware built to do this, but I am hoping I can accomplish the same thing with multiple counters on the 6602. I have been able to accomplish this with 3 counters (2 to measure period and 1 for output
) but the overhead prevents adequate triggering of the IMAQ video acquisition. I am hoping another method would solve this problem.
Thanks
Dave

Generate a delayed counter pulse

I am posting this to see if anyone can shed any light on various DAQmx operations with counters. I appear to have found a solution for the project but various counter operations are certainly not well documented and the notes I am posting may help anyone trying to do something similar.
The project is to monitor an analog input channel and when a certain criterion is met generate a pulse with a specified width at a specified delay from the event. It is being done in a LV Real Time system. Initially I tried to start a counter task within a loop, wait until done and stop the task. What I have found is that it takes a long time (of the order of 10-100's of ms) for the start task to return and the wait until done doesn't reliably return at the time the counter pulse is finished being generated. Other people seem to have found the same problem. This is described in the part 1 attachment and the attached vi.
The other way to do it is with a retriggerable counter task and using a digital line on the same card to trigger the counter. Then the way the counter works if there is a single pulse or multiple pulses is different. The way low time and high time are interpreted is odd. This is described in the part 2 attachment with screenshots from Scope captures. I have a proposed solution but I'm not sure if it is the best way to do it.
Any suggestions appreciated.
Attachments:
Generate delayed Counter Pulse problem part 2.doc ‏108 KB
Generate delayed Counter Pulse Problem part 1.doc ‏25 KB
Generate Counter Pulse.vi ‏153 KB

Andrew,
If you want to start a counter output task based on an analog input you should use an analog trigger (if your device supports analog triggering). Take a look at the example Cont Acq Sample-Timed Loop-Analog Start.vi (in the example finder - search for "trigger") for how to set up an analog trigger in DAQmx. Also, you can use the Start.Delay property in the DAQmx Trigger property node to specify an amount of time to wait after the Start Trigger is received before generating the first sample
Michael P
National Instruments

How to generate 250 ns pulses at a 200 Hz rate?

Hello,
I am working with the NI PXI 6229.
I will trigger the input sampling at 1kHz.
And I want to create an output at 200Hz, which is in synchronisation with the 1kHz.
This output at a rate of 200Hz, should exist out of 250ns long pulses.
This should be a digital output.
How should I implement this?
Thanks

Hello Boris,
If the precise 250 ns duration is important then you'll have to use both counters to do this.
The first counter will be used to simply divide-down the external signal. You can change the output mode to "pulse" instead of toggle so that it will issue a pulse every N ticks of your external signal. In your case, N would be 5. If you're using LabVIEW then this example shows how to configure your first counter (except you would pulse after 5 ticks instead of 2). The pulse width would be based on the timebase used and is not configurable in pulse mode, so you can't get the 250 ns pulse from this one counter alone. You could alternatively use the default "toggle" mode and just select a number of high and low ticks that add up to 5. Neither of these choices would give the 250 ns pulse you need though.
The 2nd counter will be configured to issue a single 250 ns pulse every time it receives a trigger. The source of the trigger would be the output of the first counter (can be routed internally). This example is a good starting point, 20 ticks of the 80 MHz timebase is equal to 250 ns (you can change the instance of the create channel VI if you prefer to let the driver do this scaling for you).
Best Regards,
John Passiak

TS4268 My facetime and imessage is not working in my iPad. I have used the same addresses many times and always been successful. Now will not sent message or connect? Any suggestions

My facetime and imessage not working on ipad2. I have used both up until today. Now not able to send or receive. I have phone 4s ad still has capability. What can I do. I have turned off both on both iPad and iPhone and restarted both but still nothing?

Without more specific information as to exactly what happens, you might want to start going through these troubleshooting support articles.
iOS: Troubleshooting FaceTime - Support - Apple
iOS: Troubleshooting Messages - Support - Apple

How to generate a delayed retriggerable pulse using only one counter with PXI 6070E card

Hi
I have a problem in generating a retriggerable delayed pulse with a single counter(triggered through a signal at gate) using PXI 6070E card. VI was developed in NI LabVIEW traditional DAQ Ver.7.1. I have used the "delayed pulse generator config" VI and a "Start counter" & "Stop counter" VIs for the purpose. But there is no output seen at the out terminal of counter. So I introduced a "wait" VI and set it to 1 sec. Now the pulse output appears but some pulses are missing mometarily after every 1 sec interval. (any solution for this)
I have gone through a few similar requests in the forum but they suggest either to use two counters or to generate a finite pulse train which does'nt fit my application. Moreover PXI 6070E has only 2 counter timers. I am already using one counter to measure the frequency of a pulse train(signal 1). The application requires to generate a delayed retriggerable pulse for every pulse in signal 1. So I have only one counter left.
Can I measure the frequency of signal 1 by analog means.? so that I can use two counters for pulse generation. (Signal 1 is a TTL signal).
Request some help.
Thanks in Advance
Regards

A finite pulse train (N_Pulses >= 2) does require the use of 2 counters on most of our older hardware including your 6070E. If you're just talking about generating a single retriggerable pulse, you would only need one counter.
Here's an example in Traditional DAQ that shows you how to set a retriggerable pulse generation (it also allows you to adjust the characteristics of the pulse on-the-fly).
If you're writing a new program, you might consider switching to DAQmx as it supports NI's latest hardware and recent OSes should you ever need to upgrade. Traditional NI DAQ is no longer in active development. Here's an example of how to implement a retriggerable pulse generation in DAQmx. You should take note that you can't use the two drivers to simultaneously talk to the same piece of hardware, although you should be able to go back and forth by resetting the Traditional DAQ driver before switching to DAQmx.
Best Regards,
John Passiak

My husband has an iPad and I just got one for me. We both have the same e-mail address. The message I get when I try to set my new one up is that the Apple ID is already in use. How do I set up with our shared e-mail account

My husband has an iPad and I just got one for me. We both have the same e-mail address. The message I get when I try to initiate setup is that the Apple ID is already in use. Any ideas on how to complete the setup of the new iPad since we both share the e-mail account?

If you selected open a new Apple ID account, go back a step and enter use existing Apple ID.
You will have to set up a separate iCloud account or your iPads will mirror each other.

I already have an ipad2 and I'm interested in buying an iPad mini. Will I have to purchase all the apps I have on my ipad2 again if I want to use them on the mini ,or, will I simply be able to use them on both machines for no extra charge?

I already have an ipad2. If I buy an iPad mini will I be able to download the apps I have already bought on to it and use them on both machines?

If you connect the new mini with the same AppleID you have on the iPad and you used to buy the Apps you will be able to download them again for free.
You can even let your iTunes do all the work for you. Sync your iPad with iTunes and make a backup. Give to the new mini a different name and the first time you will connect it to iTunes yiou will be asked if you wish to setup it as a new item or use the backup of the iPad.

No matter what I try when setting up an account for game center, I get the response that this account is already in use. I have tried several times to reset both my Apple ID and a password.

Have been having trouble trying to set up an account with game center. I have several times reset both my Apple ID and password using both of my email accounts. Each time I get a message saying that it is "already in use by another game center account", which I am sure is me, but I must have done something wrong in the initial set-up. Please advise how I can wipe out all info and finally create a valid account to get onto game center!! Thanks!

Im trying to switch the Apple ID names around, and what i've learnt is that the Apple ID has to be an Email that isn't an Apple ID. Yup, it's messed alright.

All I have on my I pod touch is a white screen with multicolored lines going across screen. What do I need to do. I can't use I tunes because it says I have to have passcode and can't get screen to come up. I have already tried holding both keys down.

All I have on my I pod touch is a white screen with multicolored lines going across screen. What do I need to do. I can't use I tunes because it says I have to have passcode and can't get screen to come up. I have already tried holding both keys down.

- See if placing the iPod in Recovery mode will allow a restore.. It bypasses the passcode (and erases the iPod)
- Next try DFU mode
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings

Generate delayed triggered pulse. Already have used both counters.

Similar Messages

Maybe you are looking for