Datalogging using Waveform for long hours

Hi all,
Im logging the data using the waveform. The chart length size is given as 1024. I need to log the data for long hours (5 to 10 hours). How much i have to set in the chart length ? how it is calculated ? Is it the right way for extended period of data logging ?
Naganatha Subramanian

naganathas wrote:
Hi all,
Im logging the data using the waveform. The chart length size is given as 1024. I need to log the data for long hours (5 to 10 hours). How much i have to set in the chart length ? how it is calculated ? Is it the right way for extended period of data logging ?
Naganatha Subramanian
I'll assume you are asking about the "Wavefrom datatype" when used with charts.
The history length is the "number of waveforms" and not the number of points. If you present an hours worth of data once every hour, it will display 1000 hours (in thoery, never tried it with those numbers and high sample rates will tax memory).
If your app spec has a hard and fast req that it drop suff older then the code will have to regularly examine the time of what is in the history and explicitly remove the old stuff ( read history, toss old, redefine history).
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Similar Messages

When i plug in my charger to my macbook and have it charged all the way i can only use it for an hour before it dies on me again. what is wrong with my macbook? what can i do to fix it?

when i plug in my charger to my macbook and have it charged all the way i can only use it for an hour before it dies on me again. what is wrong with my macbook? what can i do to fix it?

Go to the Apple in the upper left corner and select About This Mac, then click on More Info (and then System Report in 10.7), then select Power from the left hand column of the System Profiler. Copy and paste the Battery Information back here.
Also it would help to know which one of the 9 different models of MacBook you have. To see which model you have go to the Apple in the upper left corner and select About This Mac, then click on More Info (and then System Report in 10.7).When System Profiler comes up check the Model Identifier.

I use ebay for several hours and then I get "The page isn't redirecting properly" when I try to go to MY EBAY

I will use Ebay for several hours, going back and forth between searches and "My Ebay" then without warning I get "The page isn't redirecting properly" when I try to go to the MY EBAY page.

This issue can be caused by corrupted cookies.
* http://kb.mozillazine.org/The_page_is_not_redirecting_properly
*http://kb.mozillazine.org/Cookies
Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
* Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
* Tools > Options > Privacy > Cookies: "Show Cookies"
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

Using MDBs for long running transactions

Although MDBs are not the best vehicles for running long transactions, I am
 forced to use them for one such scenario (let's say for lack of a better
 pattern). In order to let my long running MDB (with Container Managed Tx)
 do it's chores I increased the time-out value to a higher number rather than
 using the default of 30 secs. Strangely, I was seeing
 IllegalStateExceptions in stdout. So I created a brand new test MDB with a
 Thread.sleep for 60 seconds, increased my MDBs timeout value to 120 secs,
 made sure there was only one MDB in the pool and ran the test again. I
 still see the below error after 30 seconds.
 I guess I should probably open a support case, but I thought I'll post here
 as well in case there's something I am missing.
 <May 27, 2003 5:26:31 PM PDT> <Notice> <EJB> <Error marking transaction for
 rollback: java.lang.IllegalStateException: Cannot m
 ark the transaction for rollback. xid=64:bea55f200db2c786, status=Rolled
 back. [Reason=weblogic.transaction.internal.TimedOutEx
 ception: Transaction timed out after 34 seconds
 Xid=64:bea55f200db2c786(-33600248),Status=Active,numRepliesOwedMe=0,numRepli
 esOwedOthers=0,seconds since begin=34,seconds left=
 30,activeThread=Thread[ExecuteThread: '9' for queue: 'default',5,Thread
 Group for Queue: 'default'],ServerResourceInfo[JMS_hmJD
 BCStore]=(state=started,assigned=none),SCInfo[wlcsDomain+wlcsServer]=(state=
 active),OwnerTransactionManager=ServerTM[ServerCoor
 dinatorDescriptor=(CoordinatorURL=wlcsServer+155.14.3.140:7501+wlcsDomain+,
 Resources={})],CoordinatorURL=wlcsServer+155.14.3.1
 40:7501+wlcsDomain+)]
 java.lang.IllegalStateException: Cannot mark the transaction for rollback.
 xid=64:bea55f200db2c786, status=Rolled back. [Reason
 =weblogic.transaction.internal.TimedOutException: Transaction timed out
 after 34 seconds
 Xid=64:bea55f200db2c786(-33600248),Status=Active,numRepliesOwedMe=0,numRepli
 esOwedOthers=0,seconds since begin=34,seconds left=
 30,activeThread=Thread[ExecuteThread: '9' for queue: 'default',5,Thread
 Group for Queue: 'default'],ServerResourceInfo[JMS_hmJD
 BCStore]=(state=started,assigned=none),SCInfo[wlcsDomain+wlcsServer]=(state=
 active),OwnerTransactionManager=ServerTM[ServerCoor
 dinatorDescriptor=(CoordinatorURL=wlcsServer+155.14.3.140:7501+wlcsDomain+,
 Resources={})],CoordinatorURL=wlcsServer+155.14.3.1
 40:7501+wlcsDomain+)]
 at
 weblogic.transaction.internal.TransactionImpl.throwIllegalStateException(Tra
 nsactionImpl.java:1486)
 at
 weblogic.transaction.internal.TransactionImpl.setRollbackOnly(TransactionImp
 l.java:466)
 at
 weblogic.ejb20.manager.BaseEJBManager.handleSystemException(BaseEJBManager.j
 ava:255)
 at
 weblogic.ejb20.manager.BaseEJBManager.setupTxListener(BaseEJBManager.java:21
 5)
 at
 weblogic.ejb20.manager.StatelessManager.preInvoke(StatelessManager.java:153)
 at
 weblogic.ejb20.internal.BaseEJBObject.preInvoke(BaseEJBObject.java:117)
 at
 weblogic.ejb20.internal.StatelessEJBObject.preInvoke(StatelessEJBObject.java
 :63)
 at
 com.xoriant.hm.ejb.session.HierarchyManagerBean_fzysig_EOImpl.getHierarchyId
 (HierarchyManagerBean_fzysig_EOImpl.java
 :1477)
 at
 com.ebiz.application.customerprofile.hm.CPXHMController.SynchronizeMHTH(Unkn
 own Source)
 at
 com.ebiz.application.customerprofile.hm.CPHMOrgGroupMsgBean.onMessage(Unknow
 n Source)
 at weblogic.ejb20.internal.MDListener.execute(MDListener.java:254)
 at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
 at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)


Hi Adarsh,
 It may be that the transaction time-out setting in the descriptor
 is not taking effect. The tx is still timing out after
 the default 30 seconds, so the later attempt to call
 "setRollbackOnly" fails as the transaction has already
 rolled back The ignored descriptor setting is a known issue
 in some earlier SPs, but I'm not sure when and where it
 was fixed - so yes, contact customer support. The work-around
 is to set the default transaction time-out for the entire server to a
 higher value. (I'm not sure where to set this on the console,
 but the relevant JTA MBean field is "TimeoutSeconds".)
 Tom
 Adarsh Dattani wrote:
 > Although MDBs are not the best vehicles for running long transactions, I am
 > forced to use them for one such scenario (let's say for lack of a better
 > pattern). In order to let my long running MDB (with Container Managed Tx)
 > do it's chores I increased the time-out value to a higher number rather than
 > using the default of 30 secs. Strangely, I was seeing
 > IllegalStateExceptions in stdout. So I created a brand new test MDB with a
 > Thread.sleep for 60 seconds, increased my MDBs timeout value to 120 secs,
 > made sure there was only one MDB in the pool and ran the test again. I
 > still see the below error after 30 seconds.
 > I guess I should probably open a support case, but I thought I'll post here
 > as well in case there's something I am missing.
 >
 > <May 27, 2003 5:26:31 PM PDT> <Notice> <EJB> <Error marking transaction for
 > rollback: java.lang.IllegalStateException: Cannot m
 >
 > ark the transaction for rollback. xid=64:bea55f200db2c786, status=Rolled
 > back. [Reason=weblogic.transaction.internal.TimedOutEx
 >
 > ception: Transaction timed out after 34 seconds
 >
 > Xid=64:bea55f200db2c786(-33600248),Status=Active,numRepliesOwedMe=0,numRepli
 > esOwedOthers=0,seconds since begin=34,seconds left=
 >
 > 30,activeThread=Thread[ExecuteThread: '9' for queue: 'default',5,Thread
 > Group for Queue: 'default'],ServerResourceInfo[JMS_hmJD
 >
 > BCStore]=(state=started,assigned=none),SCInfo[wlcsDomain+wlcsServer]=(state=
 > active),OwnerTransactionManager=ServerTM[ServerCoor
 >
 > dinatorDescriptor=(CoordinatorURL=wlcsServer+155.14.3.140:7501+wlcsDomain+,
 > Resources={})],CoordinatorURL=wlcsServer+155.14.3.1
 >
 > 40:7501+wlcsDomain+)]
 >
 > java.lang.IllegalStateException: Cannot mark the transaction for rollback.
 > xid=64:bea55f200db2c786, status=Rolled back. [Reason
 >
 > =weblogic.transaction.internal.TimedOutException: Transaction timed out
 > after 34 seconds
 >
 > Xid=64:bea55f200db2c786(-33600248),Status=Active,numRepliesOwedMe=0,numRepli
 > esOwedOthers=0,seconds since begin=34,seconds left=
 >
 > 30,activeThread=Thread[ExecuteThread: '9' for queue: 'default',5,Thread
 > Group for Queue: 'default'],ServerResourceInfo[JMS_hmJD
 >
 > BCStore]=(state=started,assigned=none),SCInfo[wlcsDomain+wlcsServer]=(state=
 > active),OwnerTransactionManager=ServerTM[ServerCoor
 >
 > dinatorDescriptor=(CoordinatorURL=wlcsServer+155.14.3.140:7501+wlcsDomain+,
 > Resources={})],CoordinatorURL=wlcsServer+155.14.3.1
 >
 > 40:7501+wlcsDomain+)]
 >
 > at
 > weblogic.transaction.internal.TransactionImpl.throwIllegalStateException(Tra
 > nsactionImpl.java:1486)
 >
 > at
 > weblogic.transaction.internal.TransactionImpl.setRollbackOnly(TransactionImp
 > l.java:466)
 >
 > at
 > weblogic.ejb20.manager.BaseEJBManager.handleSystemException(BaseEJBManager.j
 > ava:255)
 >
 > at
 > weblogic.ejb20.manager.BaseEJBManager.setupTxListener(BaseEJBManager.java:21
 > 5)
 >
 > at
 > weblogic.ejb20.manager.StatelessManager.preInvoke(StatelessManager.java:153)
 >
 > at
 > weblogic.ejb20.internal.BaseEJBObject.preInvoke(BaseEJBObject.java:117)
 >
 > at
 > weblogic.ejb20.internal.StatelessEJBObject.preInvoke(StatelessEJBObject.java
 > :63)
 >
 > at
 > com.xoriant.hm.ejb.session.HierarchyManagerBean_fzysig_EOImpl.getHierarchyId
 > (HierarchyManagerBean_fzysig_EOImpl.java
 >
 > :1477)
 >
 > at
 > com.ebiz.application.customerprofile.hm.CPXHMController.SynchronizeMHTH(Unkn
 > own Source)
 >
 > at
 > com.ebiz.application.customerprofile.hm.CPHMOrgGroupMsgBean.onMessage(Unknow
 > n Source)
 >
 > at weblogic.ejb20.internal.MDListener.execute(MDListener.java:254)
 >
 > at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
 >
 > at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
 >
 >
 >
 >

Process chain remains in yellow for long hours

Hi friends,
My process chain remains in yellow state for many hours.
when i check the the message , it shows as chain has been removed from scheduling. Is that a problem or what may be the problem?
generally if a problem of PC remaining in yellow for long time , what are the Tcodes to be looked into.
regards,
Rajesh

Hi Rajesh
GO to RSPCM check the sataus still its in yellow or green.If it is in yellow then
double clicjk on this it will takes to you in to the chain individually .Then check the
process ..
Or go to RSPC check wher exactly the chain is kicking.Then check the monitor
status of that particular process .This monitor u can achieve By double clicking on
the process-->it will show u a popup in that click on monitor.and then depends on t
the issue u can work and repeat .
Regards
R M K
***Assigning points is the only way of saying thanx in SDN ****

Using ArrayDescriptor for long array

I have a array of long for example long[] a.
I want to use preparedStatement to set array
i.e prepareStatemt.setArray(1, arrayOflong);
How will i use oracle ArrayDescriptor to get arrayOflong parameter for my prepareStatement i read the JDBC session on oracle site but i don't understand as i am database expert.

Keep the computer plugged in whenever possible.
If you keep the computer always plugged in, make sure that twice a month
run it on battery until battery level drops to about 50-40%.
Maximize Runtime / Tips for maximizing your battery charge
http://support.apple.com/kb/HT1446
More about batteries:
http://www.apple.com/batteries/notebooks.html

Preserve iphone without using it for long period of time

I will not use my iphone for a long time ahead, what should I do to preserve it?

Do not listen to zelous. Never let your battery depleted completely, it will damage it.
Extend Battery Life if Storing Your iPhone
If you will not be using your iPhone for a while, charge the battery up to 50 percent before storing it.
From: http://www.apple.com/batteries/iphone.html

Using mac for long time

I have a question what's best for battery life if I'am using my mac Air for a long time should I keep it plugged in or plug it off when it's reach the 100% and replug it when it's drain ?

Keep the computer plugged in whenever possible.
If you keep the computer always plugged in, make sure that twice a month
run it on battery until battery level drops to about 50-40%.
Maximize Runtime / Tips for maximizing your battery charge
http://support.apple.com/kb/HT1446
More about batteries:
http://www.apple.com/batteries/notebooks.html

HT5234 better we plug in the ac power when we use it for long time ? or just use the battery power ?

which is better ?

keep your macbook plugged in when close to a power outlet - battery won't overcharge since the charging stops when battery is full.
do not leave your Macbook plugged in 24 hours - 7 days a week - use it under it's own power and plug it back in once it's down to 75% to keep the battery in optimal condition.
once every couple of months - use your macbook under it's own power and charge it back up once it's down to 25%.
do not fully discharge your macbook - constanlty doing so will shorten the battery life.
good luck

Have been using FaceTime for long time with same person, for the last two weeks when trying to connect, we get connection failed message, something change in settings that we should look at?

Now getting FaceTime failed message when trying to connect with a person that were connecting successfully with up unto two weeks ago, has something changed?

Take a look around you here in this forum. Many people are talking about having problems using FaceTime. A few users claim to have contacted Apple and Apple says that they are aware of an issue with FaceTime and that they are working on it.
Some users claim that upgrading to iOS 7 solved there problem with FaceTime. Take a look around the forum and read some of the other discussions.

HT201363 my apple id is locked the message says i cant use it for 8 hours how do i unlock it faster???

??

You'll need to call AppleCare & ask to talk to "Account Security" to fix this.

MBP harddrive makes a lot of noise after working for few hours

Harddrive on My MacBookPro INtel 15" 2.0 makes nose after using it for few hours?
It also overheats. I took it to Apple care and they performed series of test and found nothing. To be honest, this is the on laptop that I had which gave anourmous amount of heat. I cant put it on my laps so I wouldnt call laptop.
Are these know issues?
Thanks.
M

Did you consider to read your manual before you went into the store?
Quote:
"Using Your MacBook Pro
When you’re using your MacBook Pro or charging the battery, it is normal for the bottom of the case to get warm. For prolonged use, place your MacBook Pro on a flat, stable surface.
Do not leave the bottom of your MacBook Pro in contact with your lap or any surface of your body for extended periods. Prolonged contact with your body could cause discomfort and potentially a burn.
The bottom of the MacBook Pro case functions as a cooling surface that transfers heat from inside the computer to the cooler air outside. The bottom of the case is raised slightly to allow airflow that keeps the unit within normal operating temperatures. In addition, warm air is vented from the slots in the back of the case."

I am trying to use two very long (2.5 hour HD) clips in multicam but FCPX only places one clip right after the other and does not create multicam. Is there a limit on clip size for multicam?

I am trying to use two very long (2.5 hour HD clips) and a 2.5 hour audio clip in multicam. One clip and the audio will ceate a multiclip but two clips will not. FCPX simply adds the second clip on at the end of the first. There must be some sort oflimitation on clip length. Is that correct and if so what is it?

The Angle field is not shown in the Inspector's default Basic View. With the clip selected in the event viewer, select the Info tab in the inspector. Change the view of the inspector from the default Basic View to the General View to be able to see the Angle field.
I assume you want to use the audio to do the sync. If FCP X has trouble syncing the audio, you can set a marker at the same chronological point in each clip before creating the multiclip. Then set Angle Syncronization to First Marker on the Angle and keep Use audio for syncronization checked. Your marker only needs to be close to get FCP X started. It will then use the audio to get final sync.

IMac 10.1, OS X 10.7.5, 4 GB RAM, 201 GB free on 999.35 GB HD, gets slower the longer I use the Internet; very noticeable with online browser game Forge of Empires. Turning iMac off and restarting it brings it back to full speed for an hour or so.

iMac 10.1, OS X 10.7.5
4 GB RAM (2 of 4 slots used)
201 GB free on 999.35 GB HD
The iMac gets slower the longer I use the Internet - to the point that it takes several seconds for each typed character to appear. This is very noticeable with the online browser game Forge of Empires. But, it happens even if not logged on to that game.
Turning the iMac off and restarting it brings it back to what seems like full speed for an hour or so. Then, it starts to noticeably slow down again.

1st thing : from my point of view upgrade your mac os to latest version.
                (their is mac os x mavericks from apple its free for upgrade so download it and install it.)
                (https://itunes.apple.com/in/app/os-x-mavericks/id675248567?mt=12)
2nd thing : then upgrade your all browser plugins to latest version.
3rd thing : and use ccleaner to keep clean your mac from junk data or other unuseable data that are created.
                               (http://www.piriform.com/mac/ccleaner)
4th thing : verify and repair your disk permissions with the use of disk utility or ccleaner
i am sure your computer recover speed.

HT1212 my daughter has a brand new ipod touch - never used - she entered a passcode then immediately forgot it and now she has tried to enter one too many times and ipod is locked for 1 hour - she has never synced with itunes HELP

my daughter has a brand new ipod touch - latest one - she started to input a passcode then didn't finish the process then turned off ipod. she turned it back on and it is asking for a passcode - she doesn't remember what she typed. Ipod is now disabled for one hour. Can we override the disable. How do we reset passcode when we don't klnow the original. It has never been synced to Itunes. I am completely lost.

If You Are Locked Out Or Have Forgotten Your Passcode
iTunes 10 for Mac- Update and restore software on iPod, iPhone, or iPad
iPhone, iPad, iPod touch: Wrong passcode results in red disabled screen
iOS- Understanding passcodes
     If you have forgotten your Restrictions code, then follow the instructions
     below but DO NOT restore any previous backup. If you do then you will
     simply be restoring the old Restrictions code you have forgotten. This
     same warning applies if you need to restore a clean system.
A Complete Guide to Restore or Recover Your iDevice (if You Forget Your Passcode)
If you need to restore your device or ff you cannot remember the passcode, then you will need to restore your device using the computer with which you last synced it. This allows you to reset your passcode and re-sync the data from the device (or restore from a backup). If you restore on a different computer that was never synced with the device, you will be able to unlock the device for use and remove the passcode, but your data will not be present. Refer to Updating and restoring iPhone, iPad and iPod touch software.
Try restoring the iOS device if backing up and erasing all content and settings doesn't resolve the issue. Using iTunes to restore iOS devices is part of standard isolation troubleshooting. Restoring your device will delete all data and content, including songs, videos, contacts, photos, and calendar information, and will restore all settings to their factory condition.
Before restoring your iOS device, Apple recommends that you either sync with iTunes to transfer any purchases you have made, or back up new data (data acquired after your last sync). If you have movie rentals on the device, see iTunes Store movie rental usage rights in the United States before restoring.
Follow these steps to restore your device:
     1. Verify that you are using the latest version of iTunes before attempting to update.
     2. Connect your device to your computer.
     3. Select your iPhone, iPad, or iPod touch when it appears in iTunes under Devices.
     4. Select the Summary tab.
     5. Select the Restore option.
     6. When prompted to back up your settings before restoring, select the Back Up
         option (see in the image below). If you have just backed up the device, it is not
         necessary to create another.
     7. Select the Restore option when iTunes prompts you (as long as you've backed up,
         you should not have to worry about restoring your iOS device).
     8. When the restore process has completed, the device restarts and displays the Apple
         logo while starting up:
           After a restore, the iOS device displays the "Connect to iTunes" screen. For updating
          to iOS 5 or later, follow the steps in the iOS Setup Assistant. For earlier versions of
          iOS, keep your device connected until the "Connect to iTunes" screen goes away or
          you see "iPhone is activated."
     9. The final step is to restore your device from a previous backup. If you do not have a
          backup to restore, then restore as New.

Datalogging using Waveform for long hours

Similar Messages

Maybe you are looking for