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• How can I design square wave which has a positive and negative values equal to the other and separated from each other by controlled time or distance

  How can I design square wave which has a positive and negative values equal to the other and separated from each other by controlled time or distance, as indicated in the figure below. and enter this signal in a data acquisition.

  

  At the time wherever you go for the beautiful diadram, you could have done the vi

  Your DAQ would like a waveform (table of values and dt ak 1/sampling rate)

  If you set the sampling rate you know the length of the array, create a matrix of zeros and set the values of the two amplitudes...

  Because I don't want to connect other duties here are some photos

  And it does have a few drawbacks leaves to be desired in my solution, just think... rounding errors and what might happen if the tables are becoming more...

  

• Positive and negative frequency of calculation deviation

  Hello

  IAM with PXI-5620 to measure RF PXI 5600.

  I need to measure the frequency deviation, Positive and negative. The example or vi "MT DAMA demodulate FM.vi" gives peak frequency deviation . Can any please help me find the positive frequency Deviation and negative frequency deviation of her

  Thank you

  Niju.

  Hi Johanna,.

  First things first - 5620 5600 + combined is what we call a PXI-5660 RF Signal Analyzer.

  The PXI-5660 module cannot be presence via the driver NOR-DAMA. The Modulation Toolkit FM sample that you reference is for the PXI-5661 and SMU-5663 analyzers, both use the driver NOR-DAMA.

  You use MT ni5660 FM demodulation. vi, located under the ni5660 examples.

  Now to your question...

  When you perform an FM demodulation, resulting the Subvi MT Demodulat FM data frequency / time with the frequency values (Y axis), is compared to the carrier frequency specified. Thus, data deviation of frequency (Hz), function of time. All you need to do to get the positive and negative frequency deviation is to use LabVIEW table Max & Min primitive functions of table palette. This will give you the min and max value of the FM data that will be the negative peak and the positive peak frequency deviation.

  Concerned,

  Andy Hinde

  RF systems engineer

  National Instruments

• SELECT statement: summing up a positive and negative value

  If I want to get the sum of the positive and negative values, can I do it like this?
  
  
  Negative:

  Select sum(amount) INTO negative_amt FROM order where amount like '%-%';

  Positive:
  

  Select sum(amount) INTO positive_amt FROM order where amount not like '%-%';

  If this is not the case, how should I go about this?

  SQL> SQL> With t As  2  (  3  Select   -100 c1 From dual Union All  4  Select -300    From dual Union All  5  Select -15.6    From dual Union All  6  Select 90    From dual Union All  7  Select 80    From dual Union All  8  Select 300    From dual Union All  9  Select -203.8    From dual Union All 10  Select 922.56    From dual 11  ) Select Sum(neg_num) neg_num, Sum(pos_num) pos_num 12    From 13    ( 14    Select Case When c1 < 0 Then c1 Else 0 End neg_num, 15           Case When c1 > 0 Then c1 Else 0 End pos_num 16    From t 17    ) 18  /
  
     NEG_NUM    POS_NUM---------- ----------    -619.4    1392.56
  
  SQL>
  

• Calculate if got only positive and negative values

  I have this problem that I need help.
  
  I have this table called MESSAGES. There fields client_name and AMOUNT like this:
  
  MESSAGES*.
  
  CUSTOMER NAME_
  Amy
  Amy
  Amy
  Bill
  Cheryl
  Cheryl
  
  AMOUNT
  500
  -200
  -100
  -111
  50
  100
  
  
  As noted, my client AMY has 3 quantity: 500, -200, -100. I want my PL/SQL in order to calculate to summarize these amount if the amount of the same client_name 1 has a value negative and positive, and all remaining the same if all of its values is positive or negative.
  
  Result:
  
  CUSTOMER NAME_
  Amy
  Bill
  Cheryl
  Cheryl
  
  AMOUNT
  200
  -111
  50
  100
  
  How am I suppose to do?

  Hey lee,

  hope this helps

  SQL> SQL> Create Table lee_test As  2  (  3  Select 'Amy' Name,   500    amt    From dual Union All  4  Select 'Amy'    ,    -200          From dual Union All  5  Select 'Amy'    ,    -100          From dual Union All  6  Select 'Bill'   ,    -111          From dual Union All  7  Select 'Cheryl' ,    50            From dual Union All  8  Select 'Cheryl' ,    100           From dual  9  );
  
  Table created
  
  SQL> SQL> Select Unique  2         Name,  3         Case When min_sign != max_sign Then Sum(amt) over (Partition By Name Order By Name)  4         Else amt  5         End amt  6  From  7  (Select Name,  8         amt,  9         min(sign(amt)) over (Partition By Name Order By Name) Min_sign, 10         Max(sign(amt)) over (Partition By Name Order By Name) max_sign 11  From lee_test 12  ) 13  Order By 1;
  
  NAME          AMT------ ----------Amy           200Bill         -111Cheryl         50Cheryl        100
  
  btw: are you chinese (cantonese??)
  

• positive and negative rotation numbers

  Hi all

  I create a roulette game that calculates the winning number based on the rotation of the main wheel. I'm if/else using statements to determine the winning number based on the rotation. I am tracking the rotation in the output panel. I want my rotation to go between 0 and 360, but the output panel trace 0-180, then it starts from "-180-0."

  The wheel can turn several times. No idea how to keep the positive numbers between 0 and 360, and do not have to write my if else to accommodate negative numbers?

  Thank you!

  var rot: Number = (whatever._rotation+360)%360;

• angles, positive and negative area on a plot of polar

  Is there a way to label the sector on a polar plot angles with +/-values? We generate a lot of bosses of directivity of sonar and angles scored from-180 to 180 instead of 0 to 360 have long been the norm. Looking at the definition of the curve and Polar - display the tab - it doesn't seem to be an obvious way to do it.

  Hi Greg,.

  Unfortunately, there is no way to do in tiara at the moment. I presented a report of Corrective Action to resolve this (#323394), and I hope that this feature will be included in a future version of DIAdem. Thank you for that bring to our attention.

  Kind regards

  Jackie

• Grid Y looking positive and negative in CS5

  I know there is another thread with discussion on why different programs the y axis upside-down, which is good.  The problem is that all the previous versions of Illustrator have your zero point as it would on a normal mathmatical grid.  Why now after 7 years of using Illustrator must I "Rethinking" how I move objects.  We create dielines and now if I put my text of the measure and captions on the top and bottom, to do the opposite of what we have done during all these years.  Besides the work placement.  Why is there not an option?  It's pathetic to from Adobe.  Someone please tell me there is an option to invert the y-axis now inverted.

  Monika said.

  Here it is:

  To change the origin of the rule in CS5 are the same as in CS4 and earlier versions, you can:

  (1) find and open the AIPrefs (Win talk) or Adobe Illustrator Prefs (Mac talk) of the file. It is a hidden file in the folder hidden settings of Adobe Illustrator CS5

  (2): find and replace the following two bits of code:

  /isRulerOriginTopLeft 1 > /isRulerOriginTopLeft 0 (replace the 1 with a 0)

  /isRulerIn4thQuad 1 > /isRulerIn4thQuad 0 (replace the 1 with a 0)

  Note: This is a global change.

• How can I do to two clips have the same position and scale?

  I just first Elements 10 today, since I'm doing a video for work. I am a seasoned videographer (I am a fairly successful YouTuber), but not with Adobe products. At home, I use Cyberlink PowerDirector 13 (although that is seriously considering moving to Premiere Pro), but for the moment at work I use elements since it is the program that they have.

  One thing that elements can do that PowerDirector is automatically align the clips at the same time. What I need to do, it's got a picture (do not fill the entire screen) suddenly cut to a similar picture of the same size and position, of the effect that the only part of the image changes. In my program to another, all I had to do was put them at the same time, change the shape of the Pic 1 how I want it, move the 2 Pic and do align on the same size and position, then move 2 peak after another in the timeline panel. However, items not the snap to each other, so I have no idea how to put them in the same size and position, one after the other.

  How can I do this? If this can be done in two elements or Pro, I'm going to have to Pro since I use this feature a lot.

  Thanks in advance!

  -Michael

  Michael

  First Elements 10 on what operating system? What video/graphics card your computer use? If NVIDIA GeForce, so we talk 10/NVIDIA GeForce display and other problems related specifically to first Elements.

  But, so far away that...

  Each clip on the Timeline of 10 elements first has a range of properties that contains a sign of movement. The expanded Motion Panel includes settings for the clip Position and scale. among other things.

  Position of two values... (___) (_) first from right to left and from left to right... second for up down or down the most.

  Have you been to the Palette of the 2nd clip properties to set its Position and scale values must match the first element?

  Have you been there and done that?

  Please read and review, and so let me know if I've targeted to what asked you. If this isn't the case, please specify where I missed what you were looking for.

  We'll rethink the situation if necessary and provide screenshots if necessary.

  Thank you.

  RTA

• Preset for video - Track (positioning and scaling)

  Hello

  For Installation I currently do a kind of multi - video in a video thing. Here is a screenshot:

  

  Until now, I've adjusted each unique Clip on 25 video tracks (Position and scale)

  My Question: Is it possible to attribute to each single video track a pre-selection, if I can put in some music video (without changing anything) I want to and it will automatically position itself? Rather than address each unique Clip.

  I use:

  Premiere Pro CC 2015 v9.2

  MAC OS

  16 GB OF RAM

  Thank you

  I don't think you can do a predefined track, but you can create a query that is predefined by right clicking on the property of the query and choose "save preset".  Name it 'Track one' or something like that and apply it to all the clips on the right track

  An alternative is to copy a clip on a track and paste attributes to others on this path.

• How do you know if there are more positive or negative numbers?

  I'll try to explain my problem with an example, because I do not have labVIEW installed in the computer.

  I have 10 numbers and multiply to 10 other numbers

  and of course I get 10 results, after I have to show the value of meddium of this 10 results and must show the signal that most seem (+ or-)

  My problem is to show the signal, if I have 7 positive 3 numbers and negative numbers, how to measure and display the negative signal to the final?

  example:

  -0,3-0,8 1 0.3 0.6-0.7 - 0.1-0.5 0.3-0.4

  If I have to put in the final:

  -0.5

  Thank you

  You can do something similar (Simplified) altenbach proposed:

  

  If the output is true your table has more positive values.

• iTunes 12.5.1.21 not remember iTunes position and size

  Update iTunes 12.5.1.21.

  Win 10 (v1607) does NOT remember iTunes position and size.

  My system uses two monitors with extended desktop. I would like to put iTunes on the 2 left / top of the page. But after the closure and revival, iTunes always appears in the center of the screen 1 and the original size when updating. She also can't remember the last page of the articles that appeared, for example, Podcasts, applications, etc. When iTunes has been closed. Instead always defaults to the page music.

  Also on launch a screen "Welcome" iTunes with No thanks / OK buttons on bottom is displayed momentarily before displaying the page of music. There is not enough time to read what this screen offers. Looked in the menus to try to find this page to display... no luck.

  Anyone else having these issues?

  Same problem here.  Very annoying.  Each time is like the first time, which is great when you talk about sex, but not when you run iTunes.  All versions up to now has been able to hold its window size and position, but not anymore.  I also find the interface is very slow to boot.

• How do you control the position and size of the images, IE. photo to the printer?

  HP Officejet 8600

  Windows XP

  I'm trying to figure out how to control the position and the size of the photos or photos that are included in an email that I send to my printer via HP ePrint.

  Hello. The process that I mentioned using Word provided that if we were send emails to the printer from a computer. If you just transfer emails from the iPhone to the printer there is no option to control the position of the jpg print. This isn't something that can be handled right now on ePrint.  The attachment will be printed on a separate page. The body of the email will be printed separately of the spare part.

• Specify a position and offset

  I received this message.

  Possible reasons:

  Measurements: Attempted to write a sample beyond the final sample generated. The build is stopped, so the sample specified by the combination of the position and the offset is never available.

  Specify a location and a shift that selects a sample up to, but not beyond, the final sample generated. The final sample generated can be determined by querying the total number of samples generated after that a generation stopped.

  Attempted to write example: 8000

  Property: RelativeTo
  Corresponding value: Position of the current entry

  Property: Offset
  Corresponding value:

  How can I fix this error?

  It would be much easier to help if you could post your code... you probably just change a setting or two (finished/continuous, of regeneration/non-regeneration, etc.).

  Alan

• Where can I find the tutorial or sample Vi to control the position and speed of the stepper motor?

  Hi all

  I use a driver on 3rd for a stepper motor and I use USB6356 as the controller to drive the motor. Could you recommend some VI sample or tutorial on the position and the speed control of stepper motor?

  Thank you

  The best

  I think that what you are looking for is the LabVIEW SoftMotion Module:

  http://sine.NI.com/NIPs/CDs/view/p/lang/en/NID/14234

  Here is a good resource on stepper motor theory:

  http://www.haydonkerk.com/resources/StepperMotorTheory/tabid/192/default.aspx

  My recommendation would be to start from a counterexample of LabVIEW. These can be found in LabVIEW > help > examples > material input and output > DAQmx > input meter, output meter.