Time Stamp in millisecond?

I need Time Stamp data in the Build Table VI to be in ms(millisecond) precision. Right now I get values in second precison only. can I format the cell of the table in any way to display milliseconds?

You may also ask why you need this kind of resolution. Be aware that Windows systems (and probably Mac and Linux as well) are multi-tasking and have many active processes when can interrupt yours at any time. What this means is that something you thought should be occurring at neat 20ms intervals will do so for a few iterations, then suddenly give you a 500ms interval because an e-mail arrived. If you need millisecond accuracy on a non-RT system, you should ensure it happens in hardware and get the timestamps from hardware as well.
On the other hand, if you just need to know when things happened, the millisecond resolution will work quite well. There was a weird bug in LV8 (?) used on Pentium 4 (?) processors where the timestamps were always rounded to even millisecond multiples. I cannot remember the details, but you can probably find them by searching in this forum. There was a long thread on the subject.
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Similar Messages

String To Time Stamp including milliseconds

Hi, The below image show me converting the time into a timestamp (and substituting the date from a different time stamp.
This works fine except for the miliseconds. you can see here the milliseconds are defines as "%2d" and this does not work. If I replace this with "%2u" or "%3u" then the VI will error (vi attached)
what am i doing wrong
Cheers, Alec
Solved!
Go to Solution.
Attachments:
Add Time to Timestamp.vi ‏18 KB

Hi,
This should be enough
Hope this helps
When my feet touch the ground each morning the devil thinks "bloody hell... He's up again!"

Time stamp LV in milliseconds

hi,
Could you look at the small program I have written with the Time Stamp? I am having difficulties expressing the wime in milliseconds. Thank-you!
Attachments:
Time_Stamp.vi ‏15 KB

This helped me too. Thank you.

Changing time stamp format in the file receiver adapter file name

Hi all,
How can we change the standard date time stamp from
filename_yyyymmdd-hhmmss-mil
to
filename_yymmdd_hhmmss
i.e., I want "underscores" instead of "hyphens" and also I do not want the MilliSeconds.
I read in the forums that I have to use the combination of variable substitution and mapping functions to do this, but not sure how exactly.
Can the experts help me with this please?
Many thanks.

Hello Ramesh,
     You can make this possible using runtime filename creation using UDF.
Please go though the below steps.
Message mapping:
Create an UDF and include the piece of code that captures the Filename and Timestamp from source side via ASMA.
Modify them according to our requirement by adding the <Timestamp> at the end of <filename> with _.
Map the UDF to any of the top level node so that the modified filename will be available for the target communication channel
UDF Code is:
try {
String filename    = "";
String timestamp = "";
DynamicConfiguration conf1 = (DynamicConfiguration) container
    .getTransformationParameters()
    .get(StreamTransformationConstants.DYNAMIC_CONFIGURATION);
DynamicConfigurationKey key1 = DynamicConfigurationKey.create( "http:/"+"/sap.com/xi/XI/System/File","FileName");
DynamicConfigurationKey key2 = DynamicConfigurationKey.create( "http:/"+"/sap.com/xi/XI/System/File","SourceFileTimestamp");
filename = conf1.get(key1);
timestamp = conf1.get(key2);
filename = filenametimestamp".xml";
filename = filename.replaceAll( "-" ,"_" );
conf1.put(key1,filename);
return filename;
catch(Exception e)
     String exception = e.toString();
      return exception;
Click on Advanced tab and check the Option u201CSetAdapterSpecificMessageAttributesu201D in addition to that check the attribute that are required to be captured during run time. In our case File Name and Source File Time Stamp are required to be checked
In the receiver communication channel Mention u2018 * u2018as File Name Scheme.
Click on Advanced tab and check the Option u201CSetAdapterSpecificMessageAttributesu201D in addition to that check the attribute u201CFile Nameu201D which will carry the modified value in the UDF .
i hope this will help you.
Monica

File adapter- Add time stamp

Dear All,
Scenario:-
File to Proxy and Acknowledgement SAP to File.
Once the file is received by SAP and first ack is send as recepit of file to Legacy system, after that the process goes ahead and do other validation and the same outbound proxy is triggered and send the respeonce.
Now in Ack i am using the same strucutre to send the file receipt and the other response and in file adapter I am differentiatiing the file with Add time stamp option.
Problem:-
My Ack Response from R3 is coming very immidiately. For example Reciept time stamp and other response time stamp is same.
Hence my legacy system is not able to differentiate which is the first flow. Ideally after receipt the other file will be seen by Legacy.
How can I resolve the problem in case when the time stamp for both the flow is same.
I can see Add time stamp option has yyyyMMdd-HHmmss-SSS wat is SSS stands for?
Chirag.

Hi,
My Ack Response from R3 is coming very immidiately. For example Reciept time stamp and other response time stamp is same.
Request / response timestamp can't be same, even if it happens at real time.
I can see Add time stamp option has yyyyMMdd-HHmmss-SSS wat is SSS stands for?
SSS is milliseconds having values between 000-999.
Regards,
Neetesh

How to include seconds and millisecond in the CSV file time stamp generated by the SpreadSheet Object?

I'm Using Lookout 6.02, in a XP Pro Windows Machine, Service Pack 3.
I have an application that collects data at the rate of 20 samples per second. It works just fine, the CSV File contains all the samples without missing a single one.
The problem is that the time stamp in the data file only shows hours and minutes. With 20 sample per second, there are 1200 samples per minute. It is hard to figure out in which second or sample number, occurred some events collected. These files are open with Excel and analyzed with Excel. There is no easy way to implement a search or a guidance for knowing the sample number or the exact time in Excel. My problem is to add the seconds and if possible the milliseconds to the time stamp done by the spreadsheet object.
Any suggestion?
Other ways to do the same that includes the time stamp all the way down to milliseconds?

Create another column with the Now() function, then set the calumn format to hh:mm:ss.s
expression would be now(trigger) for the date and time or now(trigger)-today(trigger) for just time
The trigger will cause the expression to stay updated, perhaps using the same trigger for logging the spreadsheet.
Good luck
Mike
Message Edited by Mike@DTSI on 01-16-2009 04:12 PM
Mike Crabtree - Lead Developer
Destek of Nevada, Inc. / Digital Telemetry Systems, Inc.
(866) 964-6948 / (760) 247-9512

Print out of time stamp ( time recording) in DBM ( using cats)

Hello,
in DBM we use standard time recording, everytime we post time stamp the system prints output of the time stamp
we want to stop it...however is probobly control in HR . Any hints where?
we use cac1 profile
thanks!!!

Mitch_Peplow wrote:
Hi chembo,
I'm not sure if I've misunderstood your answer but currently I'm not writing the time with am/pm anyway, its purely HH:MMS.MS and the data is there in Excel, it's just formatted the cell in an alternative way to what I would like.
Cheers again
Mitch
I was thinking about something like the snipped added below. My version is very simple, but I think that it shows how it can be done. You need to have Excel on your machine. (Disclaimer: This is my very first use of the Report Generation Toolkit in LabVIEW, so maybe there is a better way to do it)
I made the VI labels visible, so that you know what function was used, if the Toolkit is not included in your LabVIEW license. The same thing can be done with ActiveX automation. If you are not familiar with it, there are a lot of examples in the forums about generating Excel files via ActiveX.
Edit: Attached is the Excel file generated from this code
Attachments:
milliseconds.xlsx ‏11 KB

Daqmx Configure Logging with Time Stamp

Hi All,
I was wondering if it is possible to use Daqmx Configure Logging to log both data, and a row of the exact time (not a relative one), or at least add the FIRST time and date to the information?
Thanks,
Lester

Hi,
I got it to work, I just forgot to put in the "Group Name" and "Channel Name" which is necessary to get the properties, I wasn't aware of that. The info can be seen at http://zone.ni.com/devzone/cda/tut/p/id/3539 .
I got the time stamp now, but the resolution is only to seconds. I tried using the "Format Date/Time String" vi to format the resolution to milliseconds, but that doesn't seem to work because all the decimals after the seconds is just ".000000". Does TDMS always start at .000 seconds, or does it just not go down to that resolution of timing?
Thanks for your help,
Lester

Time stamp for BioBench

I am acquiring EMG data with BioBench while acquiring gait data from another source simultaneously. To correlate the data, it's important that the date stamps match. I would like to know where the time stamp comes from, and if there is a way to get more precision (milliseconds instead of seconds). Also, can I get more precision when I export, since this chops it off to the nearest minute.
Thanks!

The gait data can't be acquired with BioBench since it is from a motion capture package that acquires data in a completely different way with lots of complicated analysis involved. It processes dozens of frames per second from several video cameras to find the markers etc. I want to match the movement with the EMG signal exactly, to see when the movement begins in relation to the EMG signal. Therefore, I need to know exactly at what time each point in the BioBench file takes place in order to find out how much earlier the EMG signal started than the movement. Knowing when the EMG signal started to the nearest second is not nearly good enough resolution to say anything meaningful about the time difference between the onset of the EMG signal and the movement. The
whole point of acquiring data at up to 1000 Hz is defeated if I only know the absolute time to the nearest second. For anyone who can't acquire all of their data with a DAQCard (motion capture, force plate, etc), the data can't be correlated if the creation time isn't accurate and precise, which really makes BioBench useless for data acquisition or analysis.
Is there anyway to get the creation time to a better resolution? And does the creation time correspond exactly to the first point in the data? I think this would be a necessary improvement for many users.

Time stamp or get info including seconds

Hi there,
I'm trying to get more specific information about a selection of files - in particular, the seconds (and even milliseconds if possible) relating to the time-stamp for each. I've tried changing the international system prefs to full format but this seems not to have had any impact on finder or get info.
Thanks,
Sarah.

saraheaston wrote:
I'm trying to get more specific information about a selection of files - in particular, the seconds (and even milliseconds if possible) relating to the time-stamp for each. I've tried changing the international system prefs to full format but this seems not to have had any impact on finder or get info.
You can see seconds in the Terminal utility by using the "-T" switch:
ls -l -T
(Those are lower-case letter "L".)
I'm not sure of the best way to show anything of finer resolution.

Time stamp in server logs

Hi,
I am using WLS 8.1 and 9.2, the defalt time stamp format in server logs contains the following format:-
hh:mm:ss, can we change the time stamp to include milliseconds also, if yes then how?
Thanks in Advace,
TK.

That's only for the access log format, not the server log, and it only controls which additional elements can be displayed. It is possible to add custom fields by adding Java code, but again, that's only for the access log.
As I said before, when you asked this before (I don't know where I saw you ask this before), it's really not practical to alter the server log timestamp format. You're better off writing your own log messages with your millisecond timing.

JMS - How to receive specific messages (by time stamp)

Hi,
I need to receive messages from a queue, but only ones that were sent in a specific time stamp (e.g. more than ten minutes ago).
i have the methods receive or receiveNoWait, but I dont know how to filter the messages according to the time they were posted.
(I dont want to receive all the messages or the next message in the queue, instead, i want to empty all the old messages from the queue and leave only the new ones.)
How do I do that?
Thanks,
Ruvik

Hi Ruvika,
Do you want the messages older than 10mins to be discarded? If you want only message which are there for less than 10mins then you can probably use one of these methods
For QueueSender:
send(Message message, int deliveryMode, int priority, long timeToLive)
or
For TopicPublisher:
publish(Message message,int deliveryMode,int priority, long timeToLive)
The timeToLive is in milliseconds. After that the message should be discarded by the provider.
Check out the JMS API documentation for more details.
Have fun!!!
Robo

Adjusting time stamp of AI waveform when using pause triggering

Hi Everybody,
I've written a VI that acquires data (AI) at specified time intervals
by using pause triggering and a counter signal, but the resulting time
stamps associated with the data points in the AI waveform are NOT the
actual time relative to the start of the initial acquisition. I was
thinking of modifying the time stamps (post-acquisition) for each set
of data points per interval by adding the "off" time as set by the
counter signal, thereby adjusting the time stamps of the data to real
time. I then have a subVI that will convert the time stamps to elapsed
time. I also have an AO waveform being generated at the same time, and
was wondering if I could somehow use those time stamps values if they
were synced to the AI somehow, although this seems more difficult. The
adjustment does not need to be extremely accurate, and can vary on the
order of seconds (e.g., the last data point could be at 9990 seconds
for an acquisition that actually ended after 10000 seconds). Any
suggestions?
As an aside, the important point of this part of my program is to
reduce the amount of data being collected. I need a high sampling rate
to acquire waveforms with pulse widths on the order of milliseconds,
but typically run the experiment overnight (+12 hrs.) so the files get
really big (e.g., 3 GB!). I could try writing to binary files, but I
haven't figured out how to read the file and then split the data into
smaller files of user-defined size that can then be converted to
text/.xls files. If you have any ideas on how I might do this as well,
I'd greatly appreciate the help! Thanks!
Unagi

Unagi,
I am not exactly sure what you are trying to do, but I can
take a guess. When performing analog input measurements the waveform is
composed of t0, dt and Y. You can manipulate any of these values after
the data has been acquired. If you set up the task the waveform should
contain an absolute time, not relative. If relative is required, as you
suggested, this can be done post acquisition with the build waveform components
vi.
I do not understand exactly what you want do with the
timestamps for the analog output. Do you
want to use the relative time computed from the analog input data for the
analog output waveform? If so, you could
build a waveform and use the t0, dt from the analog input processed/relative
time waveform. Again this would be done with the build waveform components
vi.
Finally, a binary file would reduce the amount of memory
required when saving your data. A binary file is fairly simple to save
and open in LabVIEW. There are a couple examples in NI Example Finder (i.e.
Write Binary File and Read Binary File) that show you how to write and read
binary files. If you write the data to a binary file during acquisition,
and modify/split it later you could open the binary file, retrieve the data in
LabVIEW, and write a small subset to a text file. Alternatively, you could
perform some analysis of the data during acquisition and only save the set of
data that you require post acquisition.
Regards,
Jesse O.
Application Engineering
National Instruments
Jesse O. | National Instruments R&D

Decode time stamp from c-code

Hi everybody,
I have a TCP/IP where I send datagrams (in c-code) to LabVIEW (which is the server).
The datagram sends with every data a time stamp in the following way: dd.mm.yyyy hh:mm:ss.zzz, where zzz stands for milliseconds. I would like to see my data in a waveform chart at the LabVIEW frontpanel, but I'm not sure how to get a continuous time stamp from the c-code. I tried it with "scan from string" (as my data enters LabVIEW as a string), and then I made a sum of the minutes (times 60) and the seconds, which works for one minute, but after one minute my time goes of course to zero again which isn't nice for the waveform chart...
Does anybody has a nice idea how to solve this? Any examples?
Thanks in advance!
Steffi

This code should help you,
I only have a problem to read the final '.' my localization set the ',' as decimal sign and I can't get LabVIEW to change the decimal sign in this parser.
Ton
Message Edited by TonP on 02-01-2008 10:00 AM
Message Edited by TonP on 02-01-2008 10:01 AM
Free Code Capture Tool! Version 2.1.3 with comments, web-upload, back-save and snippets!
Nederlandse LabVIEW user groep www.lvug.nl
My LabVIEW Ideas
LabVIEW, programming like it should be!
Attachments:
ScanTime.png ‏2 KB

GPS Access to high precision time and time stamping WASAPI microphone captures

I am interested in using multiple WPs to capture microphone WAV that is time stamped with high accuracy (sub millisecond), hopefully from the GPS system. The GPS hardware obviously has the capability to sub microsecond levels but I can't find an API for
it.

What I would like to do is get geo positional data, which has a defined statistical uncertainty but might be relatively better correlated and as accurate a time stamp as possible. Latency isn't an issue but consistency is. GPS, of course, easily produces
time information to sub microsecond though I don't know a way to access it in WP. .1ms consistency would be all I really need but it's important that each phone in a cluster be able to capture and time stamp a sound (assume all phones are equidistant
from a source) to within .1ms. I am thinking of a product that could be used, for one obvious example at weddings, to capture the proceedings and allow after the fact enjoyment by replaying the proceedings and shifting the focus on the bride/groom minister
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Time Stamp in millisecond?

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