Data acquisition time using Fieldpoint with Ethernet Comm Mod

I am using a simple Labview program that is a simple Do While loop that gets a signal from a Fieldpoint AI module using a FP1601 ethernet communications module. The signal is changing at a rate of 50 ms or so but I cannot get the program to read it quickly. I am using a Wait Millisecond to control the speed of the acquisition and for some reason I can not get the data from the Fieldpoint module faster that approximately 0.7 seconds, even if I put 50 ms as the Wait Millisecond. I tried to change the acquistion time of the AI module (it is at 10 ms) but this doesn't help.

Hardware filter setting was my hunch.
Be aware the Fluke may be performing averaging internally and have a slower response time, thus your Fieldpoint data may be real. The only way to know for sure is to hook up an oscilloscope to the device.
Can't suggest any specific filtering, it may depend on the nature of the 'noise'
-AK2DM
~~~~~~~~~~~~~~~~~~~~~~~~~~
"It’s the questions that drive us.”
~~~~~~~~~~~~~~~~~~~~~~~~~~

Similar Messages

Problem with getting current date and time using oracle.jbo.domain.Date

I`d like to get current date and time using oracle.jbo.domain.Date method getCurrentDate(), but it always return current date and 12:00:00. I also need to get the current time.

I think you should use java.sql.Timestamp domain.
(And set database type to TIME or DATETIME.)
Jan

Data acquisition time of ocean optics spectrometer

Hi, LVers,
I has a S2000 multichannel fiber optic spectroscopy system. It includes two channels, master and slave. Additionally there is a channel labeled as 'LS-1'. I use labview and driver OOILVD32.dll to control this spectroscopy. In OOILVD32.dll, I use vi 'OOI SCAN' to acquire spectral data through master channel.
In vi "OOI SCAN", I disable all slave channels (there are 7 slave channels) and enable master channel only. However, I find that the data acquisition time is always approximately two times of the "sampling frequency" we set. E.g. for sampling frequency of 75 ms (a small value), the spectral data acquisition time is approx. 160-170 ms; for a sample frequency of 4000 ms (a large value), the spectral data acquisition time is approx. 8300-8400 ms, so on and so forth.
I am very confused with this phenomenon. I guess the most probable reason is that both master and slave channels are always enabled even one of them is software disabled. Because this product is discontinued, I can not find the manual. Anybody could advise me how this such a spectrometer works internally? Is there any multiplexing acquisitions inside?
Thanks in advance.

Hi Hello183,
Unfortunately, I do not know how your specific device works, however, I did find the product page for this device on the Ocean Optics web site, which points to the USB4000-series Plug-and-Play Spectrometer for more details. There seems to be a operations manual for this device. Perhaps this can shine some light on how the sampling works for your device as well.
Aaron P
National Instruments
Applications Engineer
http://www.ni.com/support

Data acquisition time not continuous, but starting over and over again

Hi,
My data acquisition time is not continuous but loops over and over
again. Could someone please take a look at my vi to see if you
have any thoughts on how to fix this. Also, I tried to set up my
vi so that I could take the mean of the signal at any time I
choose. However, at the same instance that the data acquistion
time "starts over" again, the mean is calculated (before I trigger it to take the mean)
I have attached my vi and my output file as a text file so that what
I'm trying to say will (hopefully) make a bit more sense.
Thanks for your help in advance!
Sherri
Attachments:
Datalog1 71805.vi ‏1252 KB

Hi,
Thanks for responding to my question. Attached is the vi with added
comments as to what I think I am doing. By DAQ time, I mean the
first column of data that is in the data file that I attached
previously. I am only simulating a signal (at the beginning) so
that I can program in my office. I do, however, have the same
problem as stated above when I change the simulate signal to DAQmx
using my instrument.
I hope this clearer. If not, I'll try again.
Thanks so much!
Sherri
Attachments:
Datalog1 71805 83.vi ‏1228 KB

How do I read multiple channels at one time using labview with the Fluke Hydra Data Bucket 2620a using serial port?

I need to take a reading of 15 channels about once a second. I can read one value at a time using the monitor function on the read values.vi driver, but this takes forever to read all the channels.

I don't have this instrument but I took a look at the instrument driver and it appears that you can only configure one channel at a time to read from. You might want to take a look at the command set for this instrument and see if it allows for configuration of multiple channels. It could be that the instrument driver just doesn't have that built in.
J.R. Allen

IQ rate setting and acquisition time using 5641R

Hi,
I am doing some signal recording using the 5600 down converter and 5641 IF transceiver. I am having some strange timing issue with my signal acquisition. I am using an IQ rate of 1.5625 MSamples/sec and recording 2500 data blocks continuously and 6250 samples in one data block. With the said setting, I am actually recording 6250*2500=15625000 IQ Samples. The issue is that the acquisition time is supposed to be 10 seconds but it is taking 20 seconds time. If I change the number of data blocks, then the time is also changing but I am always having double of the expected time.
As the IQ rate is in Samples/sec so why it is taking double of the time. Any body can comment on this issue!
Thanks,
Atif

Hi,
Actually I am using the instrument driver interface programming. I am using external clock for the IF transceiver. By using Configure Ref Clk.vi, I am setting the clock source as Clk In and it is actually causing the problem for me. If I use the Onboard Clock, then there is no timing issue. Can some one from National Instruments advice me that how can I handle this issue with the instrument driver interface programming.
many thanks in advance!
/Atif

Inserting Date AND Time using DBMS_XMLStore.insertXML

Hello,
I'm using a c# app to create an xml file to be passed to a stored procedure. The store procedure then uses DBMS_XMLStore.insertXML to insert the record in the xml file into the database.
There is a field in the Oracle table called "ENTER_DATE". I've been putting a date into the xml file for this field (ie. "10-mar-2010") and this has worked fine. However, I've now been asked to include the time with the date.
Is it possible to somehow put a date AND time value in the xml tag value so that DBMS_XMLStore.insertXML will properly insert it into the Oracle table? Everything I try returns a date picture format error.
Thanks

SQL> create table dept2
as
   select d.*, sysdate enter_date
     from dept d
    where 1 = 2
Table created.
SQL> select * from dept2
no rows selected.
SQL> alter session set nls_date_format='dd.mm.yyyy hh24:mi:ss'
Session altered.
SQL> declare
   ctx   dbms_xmlstore.ctxtype := dbms_xmlstore.newcontext ('dept2');
   doc xmltype
      := xmltype('<START>
               <ROW>
                 <DEPTNO>10</DEPTNO>
                 <DNAME>ACCOUNTING</DNAME>
                 <LOC>NEW YORK</LOC>
                 <ENTER_DATE>10.10.2010 23:11:16</ENTER_DATE>
               </ROW>
                     </START>');
   ret   int;
begin
   ret := dbms_xmlstore.insertxml (ctx, doc);
   dbms_xmlstore.closecontext (ctx);
end;
PL/SQL procedure successfully completed.
SQL> select * from dept2
    DEPTNO DNAME          LOC           ENTER_DATE
        10 ACCOUNTING     NEW YORK      10.10.2010 23:11:16
1 row selected.

Time out of Time Capsule - even with Ethernet

My 500G Time Capsule since yesterday evening refuses to work for longer than a few minutes, which is far too little for any backup.
The problem first was seen when I used it with WiFi. I then connected the TC directly with ethernet to my MacBook. Initiated a backup. After some time, it refuses to respond any more.
Click on the TC icon in the Finder column view, and nothing comes up.
Try cd /Volumes/tcapsule in the Terminal, and the terminal window freezes.
Open the TC preferences and System Preferences freeze.
I tried resetting the TC with a paper clip.
I tried restarting the TC. After that, it works for a few more minutes, before it freezes again.
I tried removing the file com.apple.TimeMachine.plist.
I tried restarting the Mac umpteen times. It usually freezes as well when the TC is frozen.
I used Disk Utility to repair the Mac's harddisk.
I used Disk Utility to try to repair the image on the TC, dragging its icon to Disk Utility. However, it gives up - probably when the TC times out.
Does anyone have any idea what I could do in addition to those things, while keeping the old backups on the TC? I would prefer not to reformat the TC.
A new backup to third party Lacie HD worked fine, so I guess the Mac is ok, and the problem really is with the TC.

Jolly Giant wrote:
some users solved their problems by going this route:
"Their problems"... Do you know of people, or did you find people who describe the same symptom as me, with a time out?
go system preferences > time machine and turn TM off. click on +change disk+ and select none.
next, delete this file HD/Library/Preferences/com.apple.TimeMachine.plist.
restart your machine, go system preferences > time machine and turn TM back on. click on +change disk+, re-select your backup volume und click +use for backups+.
Yep, that's pretty much what I did, as described in my initial post. I actually followed your exact steps again, but not luck.
download and install Time Machine Buddy if you don't have it already. start a backup and see what TM buddy reports.
Done that too, but the errors do not help me very much. A typical session may look like this:
Starting standard backup
Network destination already mounted at: /Volumes/tcapsule
Disk image /Volumes/tcapsule/Magnus Lewan’s MacBook_002332b4fbc4.sparsebundle mounted at: /Volumes/Backup of Magnus Lewan’s MacBook
Backing up to: /Volumes/Backup of Magnus Lewan’s MacBook/Backups.backupdb
Event store UUIDs don't match for volume: blanco
Node requires deep traversal:/ reason:must scan subdirs|new event db|
No pre-backup thinning needed: 23.55 GB requested (including padding), 24.83 GB available
Waiting for index to be ready (100)
And then nothing more.
The last one was somewhat more descriptive, but still no reason why things fail, and of course no suggested remedy:
Starting standard backup
Network destination already mounted at: /Volumes/tcapsule
Error while checking destination cookies: Error Domain=NSCocoaErrorDomain Code=260 UserInfo=0x100120690 "The file “.002332b4fbc4” couldn’t be opened because there is no such file." Underlying Error=(Error Domain=NSPOSIXErrorDomain Code=2 "The operation couldn’t be completed. No such file or directory")
Creating disk image /Volumes/tcapsule/blanko.sparsebundle
Error 22 creating backup disk image
Failed to create disk image
Backup failed with error: 20
It seems to first fail to read the previous sparsebundle and then it tries to create a new one. This may fail because the disk is full, but it should be able to open the previous one.

I am trying to write a double buffered data acquisition program using MFC and a callback function.

i am trying to do a double buffer data acquisition using MFC application framework in Visual Studio.i want to use a callback function to notify when the buffer is half full.do you have some sample reference program that can help me?

What DAQ board are you using? When you installed NI-DAQ you should have selected to install the support files for VC++. Then there will be several examples on how to do double buffered data acquisition.
If you have already installed NI-DAQ 6.8 or higher and did not select to include the support files, you can run the NI-DAQ setup program and just add them. If you are using an older version, you will have to uninstall and reinstall.
Once you have the support files, follow this path to the examples.
>>Program Files>>National Instruments>>NI-DAQ>>Examaples>>Visual C>>
If you are doing digital acquistion, goto the di folder, if you are doing analog acquisition goto the ai folder.
As for the callback function, you can use the NI-DAQ function Config_DAQ_
Event_Message with DAQEvent Type = 1, where N would equal half your buffer.
Brian

Changing date and time is wrong with time zone problem

Okay, searched some of the forums, but didn't get the most correct answer to this:
I just imported all my photos into Aperture from iPhoto (chose to have Aperture manage files as I don't plan on using iPhoto any longer. When I imported the files, I decided to do some organizing by date into folders. no problem.
In some of my projects, I found some files that I imported from scans or got from others who had a film roll and processed it at a lab, and the dates from those files aren't the dates that the event took place. I went into Metadata>Adjust date and time, and changed the date (not so much the time I'm worried about), and checked the "change the masters" little box, too.
After I close out of that box, the picture has the wrong date. I've determined this is because of the time zone support. I currently live in Japan, and I would like my photos here to show up as the date in the place they were taken. I think the date I enter, it thinks is the date I'm currently in (GMT +9), but aperture chooses to convert the date as if I was saying "hey, the picture I took happened on "date" in GMT +0:00)" which then makes it look in the metadata view as if it happened a day earlier.
Any imported photos come in as the correct date and time and correct time zone, as far as I can see. It's just when I change the date and time it thinks I mean to have aperture convert it to GMT + 0:00. (but on a little more of a funny side... older pictures that happened in other time zones back in the states it lists the correct date and time for when the picture was taken, but "says" it's GMT +9:00) (another issue I'll deal with later maybe!)
Hope I've described it in such a way that you can get it.

I changed time and now my MacBook won't work

HT4259 Direct Connect Two Time Capsules together with Ethernet.

I have TWO Time Capsules ( One upstairs providing Time Machine backup to IMAC #1 ) and (One downstairs providing Time Machine Backup to IMAC#2)
I would like to extend the wireless network portion of this to reach the whiole house with ONE wireless network. I know I can EXTEND the network, but my question is can Connect the two time capsules together via Ethernet cable ( my house is pre wired). This will essentially ensure that the two devices have a solid connection instead of relying on WIRELESS.
Any reasons to NOT do this?
Time Machine will be used differently on the two devices.
Thanks
Ron

Hello!
I have the same problem, i am trying to do this
Timecapsule nr 1, ISP uplink to WAN.
from this one i have LAN to the other timecapsule to WAN.
On the first timecapsule i have DHCP/NAT enable.
On the second i have, Bridge mode.
But when i am connected with eth to the second one i wont recive dhcp addresses or anything... like it wont passtrough.
Any ideas?

Cisco SPA525g2 Date and time Not Synced with the PBX server

Hello,
We have a couple of SPA525g2 phone connected and registered to our PBX server. We were able to configure 3 extensions on different lines of the phone. However, at times we were encountering issues with the other lines configured on the phone. There are times wherein 1 extension configured on the phone is having one way audio issue, but the other extensions configured on the same phone is working fine. and we have to reboot/reset the phone several times for all the extesions configured on the phone to work.
Also, whenever we reset the phone, the date and time will be way way behind the current date and time, eventhough we have already set the correct date and time before we reset the phone.
How can we resolve the one way audio issue on 1 or 2 extensions of the phone, while the other extensions configured to it is working fine?
How can we make the phone sync the date and time with the PBx server?
Any input and help regarding this issue is greatly appreciated...
Btw, date and time issue not sync with the PBX server is just happening on SPA525g2, we have other phones like SPA303, SPA504, and SPA232D/SPA302D. All other phones' date and time is in sync with the server even though we reset them except SPA525g2.
Thank you very much,

PeterMacSF,
It appears that in the past few days you have not received a response to your
posting. That concerns us, and has triggered this automated reply.
Has your problem been resolved? If not, you might try one of the following options:
- Visit http://support.novell.com and search the knowledgebase and/or check all
the other self support options and support programs available.
- You could also try posting your message again. Make sure it is posted in the
correct newsgroup. (http://forums.novell.com)
Be sure to read the forum FAQ about what to expect in the way of responses:
http://forums.novell.com/faq.php
If this is a reply to a duplicate posting, please ignore and accept our apologies
and rest assured we will issue a stern reprimand to our posting bot.
Good luck!
Your Novell Product Support Forums Team
http://forums.novell.com/

How to get the system date and time using java

hi,
I want system date in my out put. how to access system date. can v use utill packaegs (or) sql. which one is the best to get.
Thanks & Regards,
Kenny.

import java.util.Date;
import java.util.Calendar;
import java.util.GregorianCalendar;
public class MyClass {
public void setTimeStamp() {
int hour, minute, second, time = 0;
Date dt=new Date();
System.out.println(dt.getDate());
System.out.println(dt.getMonth());
System.out.println(dt.getYear());
Calendar cal = new GregorianCalendar();
hour = cal.get(Calendar.HOUR_OF_DAY);
minute = cal.get(Calendar.MINUTE);
second = + cal.get(Calendar.SECOND);
System.out.println (hour + ":" + minute + ":" + second);
public static void main (String args[]){
MyClass app = new MyClass();
app.setTimeStamp();
}

How to get server date and time using java code

Hi,
I'm new to java. I have one doubt about getting date and time of the server. can anyone give some sample code to get that.
thanks in regards
Gopi.

you need 2 things
1. something on the application server which exposes the servers time/date
2. something on the client which makes use of your time service
for instance, you could write a ServerTimeServlet that clients can call to get the time according to the server. or, if you've got a database in the server, often database software will provide a Time procedure or similar that does this, so you can use a simple SQL query to get the latest time

Can I print the date and time using aperture 4

Work inspectors require that I provide pictures with date and time of creation from the metadata info. I was looking at google searches and found Aperture with borderFX plug in might work. Can anyone confirm this is a fact? I would hate to pay for the software to find out this feature is not available during export.

BorderFX and Aperture are a great combination for framing and annotating your finished photos. I like to second Frank Caggiano's answer.
I am not sure from your post, if you already have Aperture, so just an add-on: BorderFX works also with iPhoto as an "Export" plug-in.
You can access it in the "File > Export" panel, when saving a photo.
If you do not own Aperture but iPhoto, you can try BorderFX first with iPhoto and see if it will suffice for your purposes. BorderFX is "Donation ware". You can try and explore it freely, before you donate.
BorderFX - iBorderFX iPhoto
An Example:

Data acquisition time using Fieldpoint with Ethernet Comm Mod

Similar Messages

Maybe you are looking for