How to use labview for controlling the HP Network Analyzer

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• How to use Labview to control the motorized turntable?

  Hello

  I am new to Labview and do a project that requires the use of labview to control the motorized turntable (XYZ axes). I need to use the Labview programming and have no idea at all. Need help, thank you very much!

  Lei,

  Everything said by others is correct and to do because they describe, at a given time. But I always approached these projects of motion control first by looking at the 'motion controller' (I hope you have a) and 'drivers' (what you need) between the computer/LabVIEW and engines decide what communications will be required for these devices and get an idea of the syntax of command and the language to use with them.  In some cases, the controller and the motor driver are integrated in a single unit. Heck, in some cases, they are even integrated with each engine.

  The motors can be the stepper motors or perhaps servomotors.

  In the case of drivers stepper (devices that provide power electronics to run the engines), many of them are run using only two control signals for digital called 'step' (a pulse train) and 'direction' (high-low level) and if it is possible to generate directly with the PC, it's an order of magnitude easier (if you have not already a library of available motion control to manage the generation of these signals and) the execution of the stepper motors) of having a "Motion Controller" between the PC and the "motor".  Engine drivers step by step usually can be configured that current engine and the size of the stage and sometimes for the other plus-moteur/driver-parameter setting. The configuration of these can be made with jumpers, switches or, for some drivers, with orders ASCII on some sort of port of communication, but in general these are values you download the installer once at the beginning and then never touch again if you do not need generally to have a full time available on their change communication path.

  In the case of the actuator drivers (once again the devices that provide power electronics to run the engines), many use a +/-10V control input analog signal, and, again, while it is possible to generate the signal directly with the PC hardware, a separate axes controller is usually much simpler and more robust.  In the case of a servo system, there is also a signal back to an encoder or resolver attached to the engine to be used by any device will exercise the motion controller in the system.  There are once again associated with the driver configuration parameters (and controller in this case, since it is part of the servo feedback loop) which must be configured at the start but once set up properly, they rarely need to be changed again.

  A movement controller which is separated from the PC often manage several drivers, and can often coordinate a movement between them. It will load the rise up/down of the engine speed as that changes. It will be followed by position of each motor. The servo system, but it will take the feedback signal and use it to adjust the speed/position/torque of the engine. The motion controller also deal with race and home or index of signals is usually on most lines of movement and provide information of the State of the switch to the PC.   To run the motor controller is then just a matter of chaining a set commands of (usually ASCII) to indicate how fast to run and how far to go (and direction) and by sending a command "do it." Then, ask you to keep track of the status of the process and the States of the switches.

  In many cases the builders of controllers of movement are a primitive way to communicate with the controllers of a PC with no additional software other than what they offer. With this you can at least have an idea of how different the controller commands and responses they produce. That you can start to build sequences of commands to perform the actions you want.

  You can then add LabVIEW to the mix and to understand how you can get it to send sequences of similar orders on the paths of communication that are available and respond intelligently to the information it receives in return for motion control.

• How to use Labview for measuring the reflectance at different wavelengths automatically

  Hello!

  I'm using labview to communicate with MS257 (a monochromator). If I do not use Labview, I have to use the hand controller (set a wavelength from 300 to 1100 under a grating (a total of four grids).) It takes a lot of time. So I want to use labview to realize the automation. But I don't know how to do, I still can put only a wavelength as a command for MS257, not making any difference.

  Does anyone know how to deal with this?

  Thank you for your time.

  So where are you stuck? It is a fairly common task. Inside of a loop, you can increment the "xxx" and build a table of responses. Look at the Format function in the chain and a knot of shift register/feedback.

• How about using labview vi of the filter and multiply vi to replace the analog filter and amplifier

  Hi all

  I use a data acquisition system to acquire a weak signal, it seems to a voltage amplifier and low-pass filter before the acquisition of data. I was wondering, if I use low-pass of the labview vi of the filter and multiply vi to process the signal picked up by DAQ, can I get the same effect as the analog low-pass filter and amp?

  Thank you!

  No!

  1. any system of sampled data must be band including prior to sampling in order to avoid aliasing.  It is impossible to remove aliasing after collection.

  2. the resolution of the DAQ system will be so low that you'll very 'fat' scanning and you will lose a large part of the information in your signal.

  Sorry, but you need to amplify and filter in the material before the data acquisition device for best results.

  Lynn

• How to use LabView for Primera Bravo II CD burner control?

  
  

  Primera makes an SDK called PTBurn allowing the automation of their DVD Duplicators.

  Not exactly a drop in LabVIEW, but it is not too difficult to write code to LV to interface with their API.

• wanted to know on how to use labview to get the values of the Spectrum Analyzer?

  Hi all

  I am a new Member and I am doing a project I have to see the performance of the DSl cable (lasting different for example 100 m, 200 m) on the Analyzer of spectrum and its values as graphic, food, BW should be get in excel sheet. I the company Rohde and Schwarz Spectrum Analyzer, I use interface GPIB 82357 B Agilent... If anyone can help me how to start. I plugged GPIB to spectrum and its drivers on the computer...

  Thanks in advance

  Patricia

  @Dennis Knutson

  I did not choose, he gave to me... and I have to work use only... no other choice...

• How to use Labview "" buttons"" in the operation of the program?

  I try to use the ok button to run the program adds to the value of the cluster X Y (millemetre) [which is the operation of machine vision] with value X Y offset [which i will to enter myself] but... I don't ' know how it does do, now I try to use the structure of the event, but it does not work

  Please give me some advice please... by the way I've got to do this thing made by 3 days because of my calendar... thank you

  This software is also to locate the orientation for robot to cling to the object using the CCD camera

  Place the structure of the event within a while loop. Take a look at some of the examples provided with LV, for sure, they show it.

  Then, use the change event of value for the ok button (square button of the terminal that fram for the locking behavior set correctly).

  You can pass the data of XY to the loop to output in the same framework of the event to read the moment you press the ok button.

  Felix

• How to use iCloud for storing the photos so I can free up space on iPhone?

  My wife is running out of space on his iPhone 5s. She bought more storage iCloud to upload photos and then delete photos from his iphone. When she did, pictures disappeared as her iCloud account, lose the photos of the early days of our newborn!  How do we use the iCloud storage that pay as essential to store photos and videos, so it can free up space on his iPhone? Thank you!

  You cannot delete the photos and keep them in iCloud photo library.

  You can reclaim space on your phone with: settings > Photos & camera > optimize iPhone storage that keeps the smaller version, more low resolution on the phone and original version enlarged in iCloud.

  You can use a service advantage cloud service like DropBox or Flickr 3rd.

  The best way to free up space is to import them to your computer and delete what you don't need on your phone: iOS: import personal pictures and videos of iOS devices to your computer

• How to use LabView for Pyros fire (devices)

  I searched NI Forums and google on this subject, but can't find much.

  Can someone help me understand what modules I need to shoot a few different pyros (aka, Squibs devices) such as cable cutters, bottle openers, etc.?  We use a 9172 chassis.  I can monitor and record data from a pressure sensor with voltage module and production of 9205 with a module 9263 without any problem.  I can not just current output enough with the material that I have now.  Pyros should I use require anywhere from 1 to 5 Amps and so far up to 6.15 volts to activate.

  I have not seen any module that can much more output current.  However, 9481 relay module could be promising if it can give me another amp or two at a lower voltage.  The range says 4 amps at 30 VDC.  My future plan must have the VI the first pyro when the pressure reaches a specified point and then fire the second pyro at a specified after the first time.

  Someone out there has have done something like this before.

  I'll worry about programming after I find the material.

  Thanks to all those who can help you

  I would not recommend to use the outputs digital Parallels. They can't really spend exactly synchronously. So by setting on and outside we can overload and destroy the circuits of switching first and last respectively.

  I recommend you add a simple electromechanical or solid state relays.

• How to use my 2012 LabVIEW for run the LeCroy Waverunner 610Zi?

  Hi all

  I'm a fresh starter on this topic. I have the 2012 version of LabVIEW and a scope of 610Zi LeCroy WaveRunner. How can I use LabVIEW for control the scope?

  Hello sqrtT,

  I think you and I just had a phone conversation about this, and you're all set!

  I would like to know if I'm wrong and I'll give you instructions for you.

  See you soon,.

  Leonard Brown

  Technical sales engineer

  Teledyne LeCroy

• How can I use statistics for all the tables in a schema in SQL Developer? and how long will it take on average?

  Hello

  How can I use statistics for all the tables in a schema in SQL Developer? and how long will it take on average?

  Thank you

  Jay.

  

  Select the connection and right-click on it and select schema statistics collection

• I got a license number for Adobe Master Collection from my school (Stevens Institute of Technology) and I can't understand how to use it to obtain the product. I created a user name and this is as far as I'm away.

  I got a license number for Adobe Master Collection from my school (Stevens Institute of Technology) and I can't understand how to use it to obtain the product. I created a user name and this is as far as I'm away. I need to download the product and I may not know where to start.

  Ask someone to your school... You have a Cloud redemption code, or a number of series CS6?

  If cloud, http://helpx.adobe.com/x-productkb/global/redemption-code-help.html Redemption Code and

  http://www.Adobe.com/products/creativecloud/FAQ.html

  http://helpx.adobe.com/creative-cloud/help/install-apps.html to install or uninstall

  http://forums.Adobe.com/community/download_install_setup/creative_cloud_faq

  What is http://helpx.adobe.com/creative-cloud/help/creative-cloud-desktop.html

  To start https://helpx.adobe.com/creative-cloud.html the Cloud

  If CS6, download to other downloads and enter your serial number when prompted

  Once again, your 1 resource is your school

• LabVIEW for control unlimited, a camera and a light meter (Minolta T - 10A)

  Hello world

  I'm totally new in the use of data acquisition software, but I found out, I use LabView for continuous measures (intervals of 15 min for 1 month or maybe more), the thing is that I need to get pictures simoultanously (Canon camera EOS) and illumination (in lux) device: Minolta T-10 a vision series T-10MA. My question is what software LabVIEW do I need to buy (or my institution actually) in order to get this. I look at the options of LabVIEW software and cannot understand what is needed. Subsequently, I guess that I need controllers for each of the devices (minolta and canon). Can you please tell me if this is possible and how to do it. I would really appreciate it.

  Steph.

  The following items are required: LabVIEW full, all drivers of devices (including DAQmx and pilots of the Vision) and the Acquisition of Vision software package.

  The Minolta luxometer has a connector for a PC and some communication software (which I did not inspect) which, I suppose, would allow you to take readings.  There is a comment about current if the USB cable is connected - I don't check if there is a power connector on the luxometer (since you will need to leave it plugged in for a month, the same problem with the camera).  As far as the camera is concerned, I don't know if it is controlled from a PC - my experience has been with (the size of 640 x 480 pixels) video cameras, which are probably controlled by LabVIEW.

  As for simultaneous readings, it is something that LabVIEW did pretty well.  I advise you to consult a professional if it's anything other than a school project, maybe even hire someone to work a few week of.

  Bob Schor

• How to use pthread_create for multithreading in C/C++?

  Goal: Create two threads at the same time to collect and process the data.

  Error: Buffer problem. A [i] when I is increased, the accident will be held later.

  Question: How to use pthread_create for multithreading in C/C++?

  or you know any related document, I can read?

  Mini code:

  pthread_t A, B;

  void * rawacceleration(void*);
  void * featureacceleration(void*);

  pthread_create (& A, NULL, & rawacceleration, NULL);
  pthread_create (& B, NULL, & featureacceleration, NULL);

  Thank you for your attention.

  Sorry guys.

  It is a buffer problem.

  Try i = 0 to [i]. The problem is resolved.

• How to use JavaScript to limit the number of boxes to check the user can select a PDF form?

  How to use JavaScript to limit the number of boxes to check the user can select a PDF form?

  Here's the working solution

  Please rename all the boxes like chkBox0, chkBox1... .chkBox30 (must start with 0)

  Value of exports of each checkbox must be "Yes" (default value is Yes)

  Place this Code at the level of the Javascript Document

  -Code JavaScript document-

  var counter = 0;                Checked the meter

  -Count boxes checked again when the document is closed and reopened.

  for (var i = 0; i)<= 30;="">

  If (getField("chkBox"_+_i).value == 'Yes') {}

  Counter += 1;

  }

  }

  -The function of validation-

  function validateCheckBox(name,value) {}

  If (value == 'Yes' & meter)<>

  Counter += 1;

  } else if (value == 'Off') {}

  counter = 1;

  } else {}

  getField ("name") .value = "Off";

  App.Alert ("you can select only four checkboxes");

  }

  }

  -End of Document Javascript-

  Now put this line in the MouseUp event all checkboxes

  Box - Code MouseUp event.

  validateCheckBox (event.target.name, event.target.value);

  //----------------------------------------------------------------------------------

  Hope this will help

  Kind regards

  Post edited by: Mohammad Irfan