Time loop clock

every time i sync my iPod touch the clock sets back to a random time and date. it's a pain!!! does any one know how to fix this?
my iPod touch has the january update and added features

Hello Ravens Fan
I have had an attempt (unsuccessfully) at your suggestion, but not much luck I'm afraid.
I'm kicking myself because I should know how to do this.
I have attached my attempt. Would you please take a look at it and see where I'm missing the next ingredient.
Kind regards
Ray
Attachments:
timed while loop.vi ‏8 KB

Similar Messages

Using NI-9411 in a timed loop clock less than 40Mhz...

Hi,
I'm using a cRIO for motion control. I have a counter that I modified a little bit (from the softmotion examples) and once compiled (unfortunately after 1 hour ...), I have an error saying that I couldn't acheive the desired timed loop clock of 40.4 MHz... the clock rate able to acheived was 40.16 MHz (really near)...
So I had a derived clock of 38.75MHz but this time, before compiling, i have an error saying that theses inputs can't not work at with this time loop clock...
The timed loop counter for this encoder only have to be more than 8000 Hz (1rev/s with 8000 pulses/revolution)
What can I do?
Thank,
Patrick

I know that a 9411 device can run in a SCTL at 40Mhz.
What I don't understand is that I can't run the loop below than 40Mhz.
I read in the FAQ that some device can not run above 40Mhz, but in my case, I want to run in slower....
Can it be because I'm asking the same device to run 1 SCTL with DI0, DI1, DI2 at 40Mhz and 1 other SCTL with DI3 DI4 DI5 at a different loop rate.. (38.75MHz) ...
Thanks,
Patrick

Time loop 中的数组问题

1. time loop 设定每100ms对采集卡的6个通道进行一次单点采样,如果要将每次采集到的数据存到通道对应的数组中,应该如何设计框图?
2. 在time loop 中有一个for 循环,也就是每次对6个通道进行10次采样,10次采样的数据取平均值作为采样数据,为什么每100ms只能进行一次循环?

Hi.
The only way to have a software-timed loop execute faster than 1kHz is to include code in it which will take precisely the time you need to execute, which is very very hard to determine. So, it seems like you would need LabVIEW RT to be able to use the 20MHz computer clock, or some extra hardware.
I once controlled the iteration time of a while loop by doing an analog input task and using the DAQmx Read VI inside the loop set to the correct number of samples to read at a time.
For example, if you set an analog input task to sample at 10,000 samples per second, and then you put the DAQmx Read VI inside the loop, set to read 100 samples at a time, then the loop executes every 10ms (which you could have achieved without the hardware, but is still an illustrating point).
So, if you want a loop to run at 20kHz, you might be able to achieve it by configuring an acquisition at say, 60,000 samples per second, and read 3 samples at a time with each iteration of the loop.
You must be aware though, that usually when you do such an acquisition, you read a lot more samples at a time, precisely to avoid having to execute the loop so often. Therefore, there is still a possibility that the computer might not be able to keep up at such speeds. You can test this method.
I am attaching an image with sample code of what I mean.
I think the cheapest DAQ board NI has is the PCI-6023E, which should work for this application.
Hope this helps.
Alejandro
Attachments:
FasterLoop.JPG ‏20 KB

Processing in Time Loop with microseconds.

Hello,
I am make one application in Labview where I capture the frame of one camera and I processing the image. The camera is communicate with the board NI PCIe 1433 in the PC with camera link. This camera can work with one frame rate of 2000 fps. For processing every frame in the pc I need one time loop that work with microseconds. The problem is that this time loop only work with millisecond in Windows. If I use the module Real Time, Can I configure this time loop with microsecond or are there other solution?
Thanks

Thanks,
The purpose of this is controller the application. In this timeloop I obtain the frame and I the processer. If I configure the timeloop with 1 ms I lose frames and if I configure the application with one normal loop I can obteain several time the same frame. The frame rate can change and with this change I configure the timeloop for controller all the time the captures, not lose any and not obtain replay.

Time loop and events (again)

Good morning,
I still have problems with time loops and events.
I have an event structure based on run time menu (two buttons: start stop).
When I push start, an automatic sequence is started made of a state machine (so a while loop).
I want to stop the process by means of presing stop in the run time menu. The problem is that the system doesn't respond when I press the button (it's not locked since I unchecked the option to stop front panel acitivity in the event structure configuration). I see that the pression of the stop command is made, but the code inside the event structure is not executed.
How can I avoid this?
Thank you,
Fede

Events don't react to changes in local and global varables, and that's usually a good thing.
To trigger an event programmatically, you should write to a signaling property of the control assigned to the event, and the event will fire (even if the value does not actually change).
Attached is a simple modification of my example that forces a stop of any ongoing measurments every 10 seconds using the above method.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
Prova Loop MenuIII.zip ‏15 KB

Need a dual time zone clock app that runs like a screensaver

I have a first generation iPhone and I am wondering if any of the many world time zone clocks available as apps have the ability to run over or replace, until touched, the iPhone screen itself, which contains numerous app logos. Hope that makes sense. Thoughts?

What about adding another to Dashboard?
There are some for $20 but not menu bar:
http://www.versiontracker.com/dyn/moreinfo/macosx/12763
Doesn't sound like what you were looking for though.

Time loop problem when add a parellel subvi in another time loop

I have four time loops in parellel, they work find
without any problem. However when I add a third party
Vi as a subvi in parellel inside a another time loop.
The first four time loops start working eraticly.
Is there any way I can make them work independently
time wise. There is no data transfering between any
of the loops

Hello
The VI with the timing loop is set to cycle once every second, and all it does
Is turn on a boolean light indicator off and on every second. It has a boolean
inverter connected to the shift registers of the loop. Its priority is set to Normal.
The third party VI interacts with a spectrometer hardware. The spectrometer measures
The amount of light and transform the data collected by the spectrometer into digital information, which is then passes to LabView. LabView then compares the sample information to a reference measurement and displays the processed spectral information.
The timing loops of the main VI is manually set by me the user.
The timing loops would loose its sequence; the loops would run normal for a couple
Of cycle the
n either run fast or run slow. If I take out the third party subvi everything
Runs fine
I am using windows XP with LabView 7.1
Attachments:
Dr_Grady_Solinoid_HM_3.vi ‏129 KB
USB2000_SUBVI.vi ‏238 KB

Time loop accuracy

Hi,
I haver some problems with the time loop structure. I try to get digital pulses of a width down to 50 microseconds! I have a real time OS on an PXI 8176 RT controller. For only one digital channel, this is not a problem, but the more channels I use in the time loop, the worse it gets. Is there any solution? What is the accuracy of time loops?
Thanks
Tim

Hello Tim,
please post an example what you are trying to do. So it is easier to understand your problem.
On the other hand it sounds reasonable:
The more number of channels you try to handle the higher system load you will get ...
Regards,
Thomas.
Message Edited by Tobel on 01-17-2006 04:31 AM

What is the maximum number of the parallel blocks or maximum pair of shift register used in FPGA VI time loop with cRIO 9104?

I am writing a FPGA VI with module cRIO 9104, I need to do a lot of parallel execution of inside a timed loop. In total, I have used 20 pairs of shift registers in the timed loop, which simply means there is 20 parallel exceution across ONE time loop. However, it tells me that there is an over-used of the FPGA resources in the compliation report. One is the Slices and the other is the number 4 of LUTS ( see the attached file), would the compile will be sucessful if I change it to ALL block diagrams cascaded in series without using any shift register accross the timed loop? And do you think that it is reaosnable to have 20 pairs of shift register arranged in parallel inside a timed loop.
Thank you!
Attachments:
afternoon912.jpg ‏2305 KB

Your compilation report has 2 useful numbers to help answer your question, I'll summarize:
Number of Slice Flip Flops = 27%
Number of 4 Input LUT's = 100% *
You are using the Timed Loop Shift registers to pass a value from one iteration of your loop to the next. The LabVIEW FPGA compiler will use Slice Flip Flops to create this behavior in the FPGA fabric. You are only using 27% of the Flip Flops, therefore the 20 Shift Registers are not your problem.
LUT's (Look Up Tables), which are the basic logic building block of an FPGA, are your problem. You are using over 100% of the LUT's in this FPGA. To fit in this FPGA you will have to reduce the amount of logic (and/or gates, additions, comparisons, etc.) in your design.
-RB

No 'time connected clock'

Hi,
A question concerning two different Macs with the same behaviour.
1. I gave the eMac (listed below) to my folks when I moved up to my G5 and did a clean install so that they could start out fresh-I know its probably light on RAM, but they pretty much just use it to email friends and family-not real big users.
After setting them up, I've noticed that there is no 'time connected' counter in the top toolbar( this was present before I re-installed). The only way of knowing that connection is ongoing is that the telephone icon has all the bars or 'droplets' bolded (when they disconnect the droplets are greyed out)
The dropdown menu is ticked to 'show time connected' as is the box in Internet Connect. Opening Internet Connect panel (when conected for any length of time) shows the counter at 00:00:00.
2. I installed 10.1.2 then upgraded to 10.1.5 on a friends Graphite slot loading iMac that was previously running 9.2.2 (256MB RAM with appropriate firmware updates etc). His machine is in exactly the same situation with no time connection clock visible, again 'show time connected' is checked in the dropdown menu and Internet Connect panel.
Both computers were loaded with the original disks that came with the respective machines, permissions were repaired before and after any installations, no third party apps were added. It's not a big drama but just makes me curious-any takers?
Bear with me-I have neither computer at hand to answer any further questions on specs and will be away for a couple of days, but will endevour to get back to any of you that reply.
Cheers,
Jane
Power PC G4 emac combo 128MB Ram (10.2) iMac G5 1.8 GHz PowerPC G5 512MB Ram (10.4) Mac OS X (10.4)
Power PC G4 emac combo 128MB Ram, iMac G5 1.8 GHz PowerPC G5 512MB Ram 10.4 Mac OS X (10.4)

Hi ali b,
Unfortunately I had no luck with your suggestion re: deleting the file
com.apple.medemmenuextra.plist.
Incidently, the 'show modem status in menubar' was still checked as it was originally and I didn't need to change that, as such the time clock still sits at 00.00.00 with no movement.
I walked my folks thru' this over the phone, which wasn't tricky-but I guess I'll have to pack a lunch and head over there and have a hands-on tinker if there are any other suggestions?
Cheers,
Jane

Problema di drift usando una Time Loop

Sto utilizzando un sistema con:
   Labview 2012,
   sistema operativo: XP (dovrà migrare su Seven)
   NI-PXI 8106 con chassis PXI-1045
   scheda seriale Fastcom FSSC della COMMTECH
Devo utilizzare una comunicazione seriale sincrona e inviare ad intervalli di 1 msec un messaggio: a tal fine ho utilizzato una "Timed Loop" anziché una "wait";
purtroppo, da un esame con l'oscilloscopio, emerge un jitter piuttosto ampio tra un messaggio e il successivo.
Vorrei cortesemente sapere:
1) è possibile migliorare questa situazione? Se si, quali soluzioni sono possibili?.
2) una delle soluzioni a cui pensavo è utilizzare un timer hardware per pilotare il Time Loop: posso, senza il toolkit simulation, realizzare questa soluzione? Se si come posso fare?
Grazie.

Hi
How much is your drift?
Bruno Costa
Automation Engineer

Hi, I would like to ask about how to capture data from real time loop.

Hi,
Here is some overvier of my project:
I have done real time control using labview 9.0. I used PID controller.
In order to optimise this controller, I need to capture data from my sensor(input) and actuator (output).
1. For example while real time control is running. I need to capture 1000 sample data (sensor(input) and actuator (output)).
Then I will used these data for PID optimisation on the other loop without intefere my real time loop.
2. When PID optimisation is completed, I will sent its PID parameter to real time control loop.
3. These operation is done in parallel.
Anybody can help me to solve these. Your idea may solve my problem.
TQ

Typically you will have to use RT FIFO or Queue communication to avoid any impact to your time critical loop.
Best regards
Christian

HT201250 Time Machine clock not rotating

Since upgrading to Yosemite the Time Machine clock does not rotate when backing up. However when opening Time Machine the backups show in proper order. Any idea how to make the clock rotate again since that is the indicator the backup drive is working.
Thanks,
Hal J

Apple doesn’t routinely monitor the discussions. These are mostly user to user discussions.
Send Apple feedback. They won't answer, but at least will know there is a problem. If enough people send feedback, it may get the problem solved sooner.
Feedback

Timer on clock app dimmed

On my clock app, the section where I adjust the time I want for the timer is dimmed out. It's only for the timer, world clock/alarm/stopwatch are all working perfectly only the top half of my timer section is dark. Anyone have any ideas? I have already tried soft reset, restarting and resetting settings. The countdown time displays normally once I start the timer but just when I want to set the time, it becomes really dim. The bottom half(area with start/pause) always displays properly.
Thanks!

Have you tried switching between the Timer, Alarm, Stopwatch, etc? Switch to one of these, exit, close the app as I described in my first post, reopen the app and then select Timer.
If still no joy and you've alrady done a reset, your next step is to restore with your backup. After that it's restore as new, i.e. without your backup.
Or download a Timer app from the App Store.

While/time loop from pc clock

Hi Guys
I have some code that (currently) uses a while loop to periodically open a file and read from it (in its simplest form....and...the details are not germaine to this post)
The requirements have now tightened and the loop (While or Timed??) must read the file once every two minutes based on the computer clock (accuracy is not too important, certainly not milliseconds)
e.g. time is 11:35.... read file
      time is 11:36.. ..do nothing
      time is 11:37.....read file
      time is 11:38.....do nothing
     etc.   etc.
In simpler terms (if thats possible)....have the loop perform the code inside it every two minutes with the time sequence coming from the pc clock.
I've looked at timed loops (but never used them) and they seem a possibility
So, could somebody show me an example of the best way to do this.
Thanks for your assistance and best regards
Ray
Solved!
Go to Solution.

Hello Ravens Fan
I have had an attempt (unsuccessfully) at your suggestion, but not much luck I'm afraid.
I'm kicking myself because I should know how to do this.
I have attached my attempt. Would you please take a look at it and see where I'm missing the next ingredient.
Kind regards
Ray
Attachments:
timed while loop.vi ‏8 KB

Time loop clock

Similar Messages

Maybe you are looking for