performance of trigger

Similar Questions

• very slow niswitch with signal connected (PXI-2535)

  First time using a switching FET card, running base vi where I connect a line and two columns, and make a measure of resistance with a multimeter.

  I found that with the digital multimeter connected, IE the applied signal, the switch may take more than 5 seconds to close. (Ohm DMM reading 26 ohms after 5 seconds, the 'debounce expectation' although all good reported vi)

  If the DMM is not connected, sometimes instantaniously. (disconnect the DMM, perform the trigger, connect the DMM - instant closing)

  Anyone experienced the same thing?

  Found the problem.

  Seems the FET card goes into protection mode if you do not connect the DMM - signal to the chassis GND.

  After that, it worked fine.

• Accelerometer: Can I do this with my labVIEW 8.2 Student Edition?

  Dear anyone who reads this,

  Sorry, but I'm still a beginner in this program. But I want to know if I can do this with labVIEW or not: I have an accelerometer sensor, attached to a flat surface. Of course there will be noise, but there will be times of impact forces that causes a significant acceleration to be detected by the accelerometer. I want to put a threshold to a certain extent so that only signals above specified scope will give data. Most of the time sounds will be below the threshold, but impact force will be causes acceleration to go above trigger level - by using a counter (to continually County time), I want to labVIEW to record and give wide/show time (which is recorded by the meter) at the moment the first data point is detected (which is the first data point magnitudes the trigger level).

  Now, considering the impact creates soundwaves and they are very fast, as it takes a microsecond counter.

  Is this possible?

  A simple answer Yes or no would be greatly appreciated. Any additional comments are welcome.

  Thank you

  Hi Bangkok,

  You will be certainly able to do this using LabVIEW, however, so far, the discussion has been clocked by the software approach.  In LabVIEW, rather than use the mask and the limit test VI, I probably just use the base level trigger found VI here instead.

  

  For best performance, you must perform this trigger at the hardware level.  Any of our material of the M series low cost support material analog trigger.  You will program these devices with our driver OR DAQmx.  The installation of this driver includes many examples of LabVIEW which will help you in the right direction.

• How to operate my function from PL/SQL?

  I have 4 table
  
  1st is EMPLOYEE (E #, ENAME), the primary key is E #.
  
  2nd is DRIVER(E#,L#), the primary key is E # ID EMPLOYEE
  
  3. is TRIP(T#,L#), the primary key is T #, foreign key L # driver
  
  4th is the primary key TRIPPT(T#,PT#) T # travel
  
  I create a function that finds the length (total number of pt #) of the longest point to the driver

  create or replace function LONGPT (DL# in TRIP.L#%type)
     return TRIPPT.PT#%type
  IS
     TRIPPT#   TRIPPT.PT#%type;
  begin
     select max (PT#)
       into TRIPPT# 
       from TRIPPT
      where T# in (select T#
                     from TRIP
                    where L# = DL#);
  
     return nvl (TRIPPT#, 0);
  end LONGPT;
  / 

  How can I do a select query to view the employee NAME, LONGPT. The name of the driver that perform no trigger point must be in the application as well.
  
  I try

   
  SELECT DRIVER.L# AS License_No, LONGTPT(TRIP.L#) AS "LONGEST POINT" 
  FROM DRIVER 
     LEFT OUTER JOIN TRIP on DRIVER.L# = TRIP.L#;
  This only query the L# and the LONGEST Point.

  Could someone guide me how to do select on screen the ENAME and with my LONGPT function.
  
  Published by: user4757127 on November 25, 2012 10:11
  
  Published by: user4757127 on November 25, 2012 10:17
  
  Published by: user4757127 on November 25, 2012 10:18

  Hello

  Welcome to the forum!

  user4757127 wrote:
  ... How can I do a select query to view the employee NAME, LONGPT. The name of the driver that perform no trigger point must be in the application as well.

  I don't know what you mean by "the employee, LONGPT.

  My best guess is that you need join the employee table in your current query:

  SELECT  driver.l#          AS License_No
  ,     employee.ename                              -- *****  NEW  *****
  ,     longtpt (trip.l#)      AS "LONGEST POINT"
  FROM           driver
  JOIN          employee     ON   driver.e#     = employee.e#     -- *****  NEW  *****
  LEFT OUTER JOIN trip          ON   driver.l#     = trip.l#
  ;
  

  Again, this is just a guess and guess isn't always the best way to solve problems.

  I hope that answers your question.
  If not, post a small example of data (CREATE TABLE and only relevant columns, INSERT statements) for all of the tables involved and the results desired from these data.
  Explain, using specific examples, how you get these results from these data.
  Always say what version of Oracle you are using (for example, 11.2.0.2.0).
  See the FAQ forum {message identifier: = 9360002}

• Repository with Data Guard

  Can I use a database with Data Guard for HA with 'failover FastConnect' for your repository EM database?

  Yes, this is the preferred method. Take advantage of the opportunity DG to perform a trigger when the digital switchover / failover to move the service used by the WHO from the primary to the wait.
  Please see the chapter advance config

• Help me. Will be the Trigger below cause performance problem?

  Experts,
  
  I'm Mohanasundar, senior Software engineer, Antares limited systems. We use oracle for our product. 16 years one of our capture of audit trail table (* LOGTABLE *) do not have a primary key column. If we write at the same time more than one journal to LOGTABLE, the column was even, due to which order of this column wasn't properly.
  
  To avoid this, we have added the trigger of bellows for LOGTABLE.
  
  CREATE OR REPLACE TRIGGER TR_PK_ATTACH_TBL+.
  BEFORE INSERT ON ATTACH_TABLE FOR EACH LINE.
  DECLARE A1 NUMBER +
  START to+.
  * SELECT LOGTABLE_SEQ. NEXTVAL IN A1 FROM DUAL; *
  *: NEW.LT_INDEX: = A1; *
  END; +
  
  LT_INDEX Here are the newly added primary key column.
  LOGTABLE_SEQ is an oracle sequence.
  
  This table contains about 10 million documents.
  Initially we updated the sequence for the LT_INDEX column to existing records.
  
  Details of our server:
  
  OS: windows Server2008 R2
  Web server: Apache Tomcat 6.35
  Oracle: 11G
  
  The problem is,
  
  "* We made this change to the production for the last version (this month)." "Our teams COMPUTER, reports that after this change, the site is too slow (Server Web is in place, but the answer is too slow)."
  
  Will this trigger slow the performance of oracle db? *
  
  Please help us, our eight month project is literally dependent on this key.
  
  Thank you
  Mohanasundar.n

  Relaxation itself I do not introduce overhead costs have a significant impact on performance, and I can see why you would use an approach to relaxation based during the redevelopment of this on an existing system.
  Could really do with some stats here, an AWR report on a busy to begin with.

  But I'll take a guess - could be contention on the right-hand side of the index, a hot block as all these inserts are consecutive values are inserted.
  A reverse key index could (maybe with the emphasis on the word!) help here.

• 7 - an animation trigger based on the events on an "Act of performance art" of Captivate

  Hi guys,.

  Get into the nitty gritty of Captivate now.  I have several situations where I advanced acts causing on the objects animation effects, but I hit the problem that seems to have no control over the timing of the effect (for example, I have a map of spinning I want to run faster).

  Now, normally if you have a click box (or button) which is only 'apply the effect' then you are able to go to the effects of the relevant object and replace the 'Animation' trigger ' (Self) time-based animation "to a new selection for example"button on the success"which allows to manipulate the timing of the effect. It doesn't seem to appear if the effect 'apply' is located in adanced action.

  Is it possible to get to the timing effect when using 'Perform advanced Actions'?

  See you soon.

  Did you hear sigh me? Indeed, when you apply effects through advanced actions it will be the default. This is the reason why I always recommend to create custom effects to apply. It's a heavy workflow, very well aware of this. I asked for this feature for effects appeared and could be applied by advanced actions (which was the CP5 if I remember correctly), but as long as many people ask for this kind of improvement, it will never do to the top of the list. The problem is that you can not have an 'absolute' duration of effect, they are always relative to the length of the object.

  Workaround solution:

  1. Create a custom effect (timed) with the appropriate length and take into account the duration of the object that is intended.
  2. Save this custom effect in th custom of the Gallery\Effects folder
  3. Apply once this effect customized (timed trigger) or it will not appear in the drop-down list of effects in the Advanced UI actions
  4. Then use this effect in action advanced statement and cross your fingers

  Lilybiri

• [Cp6] Perform the action on a specific image ("onAppear" trigger type)

  Hello

  I want a script to run without user interaction on a particular frame (just to set a variable with this particular frame number).

  Ideally, I would like to put the script on an object that appears in this framework and it will be executed when the object is displayed.

  I have buttons to go to the final framework of this slide and I need to go back to this particular frame after the buttons took me elsewhere.

  I know I could set the value to a script for each button. I know maybe I could calculate the number of the frame, but the solution 'I'm here and here is my frame number' is so straightformward!

  No idea how to do this?

  Thanks in advance!

  PJ

  The only way I know to trigger an action which is both feature widget actions, created by Jim Leichliter: http://captivatedev.com/2012/09/26/adobe-captivate-6-0-free-widget-time-based-actions/

  ATTENTION: only compatible with SWF output.

  Lilybiri

• A trigger performs an InDesign javascript at regular intervals...

  I have a javascript that runs in Adobe InDesign CS3 for Windows at regular intervals, say every five minutes. The purpose of the script is to test the latency of our production servers time - he opens a test document, an image of the scene, formats a text, closes and saves the document. At the end of the routine, he wrote the elapsed time for this process in a log file that is monitored. This allows us to monitor the status of the network and IO on the servers because all docs test are open on our network from a workstation user. The script itself works fine, but I'm looking for a way to trigger at a given time interval. I be interested to hear any ideas group has on how this can be done. Thanks in advance, Will

  In CS5, you can use idleTask to run the script using ExtendScript.

  Here's a tip on a way forward on this issue in AppleScript:

  http://forums.MacRumors.com/showthread.php?t=586719

  Substances

• Performance of Bluetooth problem

  I, two headphones listening separate bluetooth (Jaybird X2s and Airfix Matrix 2) this pair perfectly and work fine with my iPhone 6.

  The problem is that when I connect it to my Mac, performance system - audio and video, jump tanks lag mouse, slow individual tasks, etc.

  However, I see no increase in the pressure load of the CPU or memory in the activity monitor.

  I see no unusual chatter in the Console, only messages I expect:

  06/04/16 7:27:50.077 PM blued [26990]: device connected with the address: 44-5e-xx-xx-xx-xx and classOfDevice 0 x 240404 and handle connection 0x000b

  06/04/16 7:27:50.405 PM blued [26990]: CoreAudio trigger for you to connect to bluetoothaudiod

  06/04/16 7:27:52.000 PM kernel [0]: BTCoex Config setting: enable_2G:1, profile_2g:0, enable_5G:1, profile_5G:0

  That said, there are messages that are apparently independent which occur when a Bluetooth audio device is connected and I'm experiencing performance degradation:

  06/04/16 7:30:44.809 PM AddressBookSourceSync [27024]:-[ABPerson valueForProperty:com.apple.Messages.FontSize] - unknown property. This warning will be displayed only once by unknown property, by session.

  06/04/16 7:30:44.811 PM AddressBookSourceSync [27024]:-[ABPerson valueForProperty:com.apple.Messages.FontColor] - unknown property. This warning will be displayed only once by unknown property, by session.

  06/04/16 7:30:44.812 PM AddressBookSourceSync [27024]:-[ABPerson valueForProperty:com.apple.Messages.BalloonColor] - unknown property. This warning will be displayed only once by unknown property, by session.

  06/04/16 7:30:44.813 PM AddressBookSourceSync [27024]:-[ABPerson valueForProperty:com.apple.Messages.FontFamily] - unknown property. This warning will be displayed only once by unknown property, by session.

  06/04/16 7:30:44.813 PM AddressBookSourceSync [27024]:-[ABPerson valueForProperty:com.apple.Messages.RandomBalloonColor] - unknown property. This warning will be displayed only once by unknown property, by session.

  06/04/16 7:30:44.000 PM kernel [0]: sandbox: com.apple.Addres (27025) deny (1) / private/var/run/mDNSResponder network-outgoing

  06/04/16 com.apple.AddressBook.InternetAccountsBridge [27025 7:30:44.817 PM]: dnssd_clientstub ConnectToServer: connect()-> no of tests: 1

  I contacted the support from Apple via Twitter and they recommended the usual Voodoo PRAM reset, but it was not effective.

  Any ideas?

  Now, I'm sure that this is caused by low battery on bluetooth devices to 99%.

  This is a problem that does not occur on my iPhone (even with a low battery), but the loading devices seems entirely solve the problem. Audio begins to jump and performance degrades again once the battery is less than 40% on the headphones.

  Well well... :-/

• Are there examples of niScope send software trigger edge

  This is the sub VI:

  

  In my case, PXI-5105 and 6368 are used for the acquisition of synchronization. Post_trig_event and pre_trig_event of data are needed to analyze what analog channel has abnormal evolution. The trig source is not unique, which include several analogue channels. I therefore prefer to use a software to process a lot of data to channel to find the abnormal change and then send a trig signal, which means a trig signal to the PFI or the PXI_Trig. I think that the noScope that send software Trigger Edge works. Can you give me an example of this subroutine VI?

  I've attached an example that uses a software trigger to trigger an acquisition.  The code shows how to use the "niScope Trigger.vi software Send."

  Description of your request, it looks like you want to acquire data continuously and perform a top treatment in LabVIEW to determine when send software trigger.  This can also be done, and I would recommend starting with one of our continuous streaming of examples, like "niScope EX Fetch Forever.vi", which can be found using the example Locator OR under material input and output > Modular Instruments > NOR-SCOPE > Acquisition continues

   

  
  I hope this helps!

  -Nathan

• Camera trigger with trigger material GigE

  Hello

  Here's an overview of what I want to accomplish:

  LabView - program starts and expected output frames GigE camera

  -Hardware trigger leads, to camera, GigE, image display

  -A few simple calculations is performed on each image to generate the average pixel value--> this average value is plotted for each frame

  -Repeat the three steps above

  Please see the attached VI. I put my camera settings successfully in MAX do wait an external hardware trigger. However, out of IMAQdx Grab2.vi inside the While loop is only a single image (even if MAX I put the Mode of Acquisition of multitrame - 255 images).

  Any help would be appreciated!

  Thank you.

  
  

• Generate a single pulse on several channels of an external trigger high-speed DIO

  Hello

  I'm trying to implement a system using a PCIe-6535 b connected to a high speed of SMB-2163 DIO.  The system must be configured to work with a camera send a trigger (at the beginning of each show) to the PFI4 which in turn sends a single pulse on three digital output channels to lasers.  Each output has its own specific deadline and the width.  There is no counter on the SMB-2163, so I think I need to use Pulse Width Modulation (PWM).  I saw this example and adapted to my system:

  https://decibel.NI.com/content/docs/doc-8010

  However, when the source to enter the DAQmx VI of sample clock is set to PFI4 (instead of the on-board clock) to receive input from the camera, changes in behaviour.  The rate of sampling in the sample clock VI is ignored, and each element of the digital waveform is triggered.  I need the sequence to complete each after trigger.

  I am attaching a quick diagram of the sequence.  Any suggestions on how I can get this kind of events triggered? (With the help of LabVIEW 2013)

  Thank you

  Mike

  PLATES

  

  

  The external signal must be configured as a trigger for digital startup rather than the sample clock.  I do not think the 6535 redeclenchables supports digital output, so you don't have to restart the task after receipt of each trigger (something like this, however you can improve performance by committing to the task by using the task of control DAQmx before entering the loop).

  Best regards

• Save the data before and after the occurrence of a Trigger Condition.

  Hello

  I am worrking on an application that acquires data from 64 channels and performs many analyses.

  Necessary to implement something is recording the data in the event of alarm condition.

  I've implemented datalogging in many previous applications, but this one is difficult.

  I need to save data for a few seconds before and a few seconds after the alarm has occurred in a single file.

  I thought constantly write data to a file PDM and at the same time deleting the old data, until the alarm trigger occurs.

  but I was not able to do, since I have no blocks to remove data from a PDM file.

  I'm looking for the ideal approach to this recording.

  Any help will be appreciated.

  What I have to do this in the past, use of a queue with loss as a circular buffer.  When you get the relaxation, dump you the data in the queue to your file and then save however many data you want after the outbreak.

  For the purposes of the memory allocation, do not use the queue to rinse.  Use rather a Dequeue element inside a conditional FOR loop with a 0 timeout (reading the queue stops when you have a timeout or you read X samples).

• Group execute Trigger on 2 DMMs

  Hello

  I'm trying to use software trigger to trigger two Agilent 34401 DMM "simultaneously".  I found this article from 2007:

  http://forums.NI.com/T5/LabVIEW/how-do-I-use-visa-to-perform-get-Group-execute-trigger-to-three/m-p/...

  However, the answer is less useful, because it does not address the issue.

  What I'm trying to use is the function GPIB 488.2 Trigger List (such as recommended by NEITHER).  However, generating a list by program turns out a touch... interesting.

  Given that the selection of the device is made using aliases VISA, I am trying to use a property node to retrieve the GPIB address.  As a temporary trial, I use a VI with the attached excerpt included code.  With DMM configured in GPIB0::6:INSTR and GPIB0::22:INSTR (but try this at home with no real hardware attached), my probe shows all the values of property as 0.

  I tried the wrong approach?  Try this at the office with the DMM attached would produce a different result?  (I'll try again tomorrow anyway.)

  All comments would be appreciated.

  Kind regards

  Geoff

  Try to work with the connected digital multimeters (and turned on), the primary address property returns exactly what I expect and the code snippet works - apparently - perfectly.

  I had been struggling with getting the DMM to trigger and retrieve the measurements of the DMM.  I tried to use the 'Trigger' function, but it doesn't seem to work without additional steps to ensure that the right listeners are selected - so the function "basic list".  I also had problems of data recovery - partially because he was (probably) not trigger, but especially because I wasn't not wait long enough so that all samples must be collected.

  For more information, this system has (by default, but configurable) 10 samples being played at intervals of 0.1 s, so you have to wait a second.  I could just have increased the timeout, but it's a bit messy.  Otherwise, I guess I could loop waiting for signals to be ready, but the driver for this DMM does not seem to include a query function.

  The screw with a symbol of the timer on them simply contain a call to Wait (ms).  It's cleaner (in my opinion) that put in a frame.  Now that I have the work function, I also replaced the frame function timestamp and relaxation with a sub - VI.

  Kind regards

  Geoff