The demodulation method - how to know

Hello,
I have a general question, not about the code itself.
I measure a signal with a sample rate (now it doesn't matter, which one exactly). I have got a series of numbers, which is my signal in the exact time points. Then I use Extract Single Tone Information.vi and can get the amplitude of my signal (and frequency, and phase). If the sample rate is matched with signal frequency, I expect to get the right result. It's the procedure.
I can suppose for sure, that Extract Single Tone Information.vi implements the demodulation.
The question - what demodulation method does it use? I can assume, of course, but how to know it exactly. I mean, if I can get some results and somebody asks me, how they have been got, I can't say something like "I don't know, it is just system shows it." (it is important to me, because we use DAQ board in scientific area)
I don't need the code of this vi (I don't neeed, of course, the commercial secrets), but can I know the ideas and methods?
Thank you in advance.
Anna

Anna,
You have asked an important question, one which too often is not asked.
The first place to look for information is the help files. For many VIs the detailed help describes the algorithm used. Unfortunately, the Extract Single Tone Information.vi help file does not have this information.
Next, open the diagram and look at the code. In most of the VIs provided with LV by NI, the code is not secret. If you do this you will find that the VI uses a Hanning Window and a standard FFT, both of which have formulas or algorithms listed in the help.
These are not demodulation functions although you can get some information about modulation types from the spectrum. The Single Tone VI will not give any modulation information because it is designed to look at only one frequency. If you need to analyze a modulated signal, other tools than the Single Tone VI will need to be used.
Lynn

Similar Messages

How I know my answer to the security question, How I know my answer to the security question

How I know my answer to the security question, How I know my answer to the security question

Click here for information. If you can't reset them through the method described in that article or by sending yourself a rescue email(the email may take a few hours to arrive), contact the iTunes Store staff via the link in the 'Additional Information' section.
It isn't possible to create a rescue email address without correctly answering two of the questions. Nobody on these boards can reset them for you.
(94895)

If i know the extract strucute how to know the DS name

Hi All,
If i know the extract structure name how to find the DS name?
Regards
Kiran

If it is for LO extractors we can identify the datasource based on the extract structure.
say if the extract structure name is MC11VA0HDR , 11 will be the application component, VA is the event for salesorder , HDR gives the level of the data it is extracting .So in this case the data source name will be 2LIS_11_VAHDR.
For MC12VC0ITM the data source will be 2LIS_12_VCITM(12 is the application for delivery ,VC the event for delivery)
But for generic and other extractors it is not possible to know the datasource name by seeing the extractstructure. We will have all the datasources information in the roosurce table. Here we can check the datasource which is having that extract structure.

How to fix "NotAllowedError" with the mailForm method (javascript) in adobe reader 9.3?

Hi! I want to know if it exist a way to use the mailForm method (this is javascript) in adobe reader 9.3?
Or, are there any equivalent method? I want to send by email a FDF with my PDF.
When I run my javascript, I got the following error: "NotAllowedError: Security settings prevent access to this property or method.
Doc.mailForm:55:Field FI_ENVOYER:Mouse Up ".
(Here, FI_ENVOYER is the name of my button).
Tanks for the help!

My document have this rights:
Protection method:                              None
May be open in:                                  Every version of Acrobat
Print:                                                 Allowed
Assemble the document:                    Unauthorized
Copy of content:                                 Allowed
Copy of content for accessibility:         Allowed
Extract pages:                                   Allowed
Comments:                                       Allowed
Filing form fields:                               Allowed
Affixing signature:                              Allowed
Creating pages models:                     Unauthorized
Is "Creating pages models" or "Assemble the document" can prevent the use of the mailForm method?
I know that the mailForm requires privileges, but how can I allow these two rights who are unhauthorized?
Is there something else I can do to be able to use the method "mailForm" without having the "NotAllowedError"?
Tanks

How to know the dynamic values for this :AND category_id_query IN (1, :3, )

Hi Team,
R12 Instance :
Oracle Installed Base Agent User Responsibility --> Item Instances -->
Item Instance: Item Instances > View : Item Instance : xxxxx> Contracts : Item Instance : xxxxx> Service Contract: xxxxx>
In the above page there are two table regions.
Notes.
-------------------------------------Table Region---------------------------
Attachments
-------------------------------------Table Region---------------------------
--the attachments are shown using the query from the fnd_lobs and fnd_docs etc...
I want to know what are the document types are displayed in this page ?
--We developed a custom program to attach the attachments to the services contracts and the above seeded OAF page displays those ..as needed.
But after recent changes..the Attachments--> table region is not showing the attachments.
I have verified the query..and could not find any clue in that..
but i need some help if you guys can provide..
SELECT *
FROM
*(SELECT d.DOCUMENT_ID,*
d.DATATYPE_ID,
d.DATATYPE_NAME,
d.DESCRIPTION,
DECODE(d.FILE_NAME, NULL,
*(SELECT message_text*
FROM fnd_new_messages
WHERE message_name = 'FND_UNDEFINED'
AND application_id = 0
AND language_code = userenv('LANG')
*), d.FILE_NAME)FileName,*
d.MEDIA_ID,
d.CATEGORY_ID,
d.DM_NODE,
d.DM_FOLDER_PATH,
d.DM_TYPE,
d.DM_DOCUMENT_ID,
d.DM_VERSION_NUMBER,
ad.ATTACHED_DOCUMENT_ID,
ad.ENTITY_NAME,
ad.PK1_VALUE,
ad.PK2_VALUE,
ad.PK3_VALUE,
ad.PK4_VALUE,
ad.PK5_VALUE,
d.usage_type,
d.security_type,
d.security_id,
ad.category_id attachment_catgeory_id,
ad.status,
d.storage_type,
d.image_type,
d.START_DATE_ACTIVE,
d.END_DATE_ACTIVE,
d.REQUEST_ID,
d.PROGRAM_APPLICATION_ID,
d.PROGRAM_ID,
d.category_description,
d.publish_flag,
DECODE(ad.category_id, NULL, d.category_id, ad.category_id) category_id_query,
d.URL,
d.TITLE
FROM FND_DOCUMENTS_VL d,
FND_ATTACHED_DOCUMENTS ad
WHERE d.DOCUMENT_ID = ad.DOCUMENT_ID
*) QRSLT*
WHERE ((entity_name    ='OKC_K_HEADERS_V'-- :1
AND pk1_value          IN ( 600144,599046) --:2
AND category_id_query IN (1, :3, :4, :5, :6, :7) )
AND datatype_id       IN (6,2,1,5)
AND (SECURITY_TYPE     =4
OR PUBLISH_FLAG        ='Y')))
--='000180931' -- 'ADP118'
The above seeded query is the one which is used for table region to retrieve the data..
how to know the dynamic values for this : AND category_id_query IN (1, :3, :4, :5, :6, :7) )
--Sridhar

Hi Patricia,
is it working for restricted key figure and calculated key figure ??
Note Number Fisc Period Opening Days
1 1 2
2 1 3
3 1 0
because I have other restriction, so I create two restricted key figure..
RK1 with restriction : Total Number of Note,
RK2 with restriction : Total Opening Days ,
then I Created a calculated key figure, average opening days in a period
CK1 = RK2 / RK1..
in this case, I am not sure if it will work or not..
for example, during RK2 calclation, it might be this   2+3 = 5, the line with 0 will be ignored..
during RK1 calcualtion, it might be 1 + 1 + 1 = 3. ---> Not sure in this case, the line with opening days 0 will be calculated or not..
could you please confirm..

How to know the error in the goods movement

Hai gurus,
a) while doing goods issue and goods receipt , if there is any
error in the goods movement how to know the same and correct it.
Regards,
sekar chand

Hi,
If You are doing GR and GI during order confirmation then you will find a tab for Display Error(Bell Ikon).At the time of any error you will find this icon highlighted.press it you will find details error description and proposed solution.
Regards,
Dhaval

How to know the total page number of the standard report

How to know the total page number of the standard report?
If I insert a graph, a table, or text into the end of the standard report, how to know how much space is left for the current page?

Hello Net,
Unfortunately, we do not have any VIs in LabVIEW that can figure out the number of pages of a standard report. However, with the use of ActiveX calls you can achieve this task. Here are a couple of discussion forums which discuss this:
Excel Page Numbering with ActiveX:
http://forums.ni.com/ni/board/message?board.id=170&message.id=194479&requireLogin=False
Number Pages in Word Report:
http://forums.ni.com/ni/board/message?board.id=170&message.id=162972&requireLogin=False
There is also great documentation on using ActiveX on msdn. You can search this document for page number objects. Here is a link to this:
http://msdn2.microsoft.com/en-us/library/aa223048(office.11).aspx
Please refer to these links. If you still have questions please feel free to let us know so we can assist you.
Thank you
Best Regards,
Dominic L.

How to know profit centre due balance?

Dear friends
At my client place we are implementing ECC 6.0 with document splitting. Total Company code is divided into 6 profit centres.
The issue is there are so many transactions between profit centres like
> Payment of vendor balances by one profit centre on behalf of another
> Collection of customer balances by one profit centre on behalf of another
> Fund transfers from bank of one profit centre to bank of 2nd profit centre etc.
In this case at the period end how to know the due balance of one profit centre to another profit centre.
Is there any transaction code to know outstanding due by each profit centre to another.
Please guide me how to achive this.
Thanks in advance

I didnt get any reply hence I am closing

How to know transport request

if i know the program name how to know the transport request
without going se38,se09.

Hi
See in the top :-
Go to Environment -> Transport Organizer.
there u will see the transport request for the program.
reward if help.

How to know the class method behind an enterprise service

Hi,
SAP has provided enterprise services for Room booking in Real Estate module. They are even shipping the complete application for a nominal price. But the standard version is not suitable for our client requirement so they want to develop this application inhouse.
Now my question is: I know the enterprise services used in this application. How to know the implementing methods behind these enterprise services ?
If possible suggest which approach will be a better option for the inhouse development.
1. Webdynpro ABAP and use directly methods behind the enterprise services.
2. Webdynpro ABAP and create client proxy class for the enterprise services.
3. Webdynpro JAVA and use the enterprise services.
4. Using visual composer modelling the application.
Please suggest the best alternative.
Best Regards,
Aleem Mohiuddin.

Hi
They are even shipping the complete application for a nominal price. But the standard version is not suitable for our client requirement so they want to develop this application inhouse.
I assume you are talking about xApps.
How to know the implementing methods behind these enterprise services ?
In sproxy transaction you can search service and then you can see class and method implemented behind that particular service.
1. Webdynpro ABAP and use directly methods behind the enterprise services.
In my opinion not recommended to bypass ES and use method behind it.
2. Webdynpro ABAP and create client proxy class for the enterprise services.
Not sure why you want to create proxy of ES.
3. Webdynpro JAVA and use the enterprise services.
4. Using visual composer modelling the application.
You can use either Webdynpro (ABAP or Java) or VC to model your application which consume ES in backend. Both options are good, you can chose Java or ABAP flavor of dynpro based on skill available in team. VC is very effective in rapid modelling and can be used in protyping or in development of complete application.
Regards,
Gourav

Hi! At connection to iTunes the section "other" constantly increases. What's the matter? How to avoid it? On phone music isn't necessary, video too isn't present. But another grows. How to correct it? I know only one method, it to dump all settings and a

Hi! At connection to iTunes the section "other" constantly increases. What's the matter? How to avoid it? On phone music isn't necessary, video too isn't present. But another grows. How to correct it? I know only one method, it to dump all settings and a content.

http://discussions.apple.com/docs/DOC-5142

How to know whether a method is thread-safe through the java-doc?

In some book, it says that SAXParserFactory.newSAXParser() is thread-safe,but in the java-doc,it doesn't say that.
newSAXParser
public abstract SAXParser newSAXParser()
throws ParserConfigurationException,
SAXExceptionCreates a new instance of a SAXParser using the currently configured factory parameters.
Returns:
A new instance of a SAXParser.
Throws:
ParserConfigurationException - if a parser cannot be created which satisfies the requested configuration.
SAXException - for SAX errors.
I want to know, how to know whether a method is thread-safe?

System.out is a PrintStream object. None of the methods there use the synchronized modifier, but if you look in the source code, you will find out it is thread-safe, because it will use synchronized blocks whenever it writes some text.
The source code is in the src.jar file which you can extract.
I didn't find any comments about that PrintStream is thread-safe in the API.

Any1 knows how to se the getallfonts method??

how to use the getallfonts method and put in a combobox??
tried so many times, many error, seems i cant understand the java tutorial ..
can help??

This is how you can do it
import java.awt.*;
public class TestFonts{
     public static void main(String[] args){
          GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
          Font[] f = ge.getAllFonts();
          for(int i = 0; i < f.length; i++){
               System.out.println(f.toString());
Carsten

I dont know what to do!!! I pulled out my headphones and then saw that my sound was not working correctly. I was horrified to find a piece of the headphone never came out. I have heard how much it costs to repair and the other methods are not working.

Please help, i am so scared that i will never get my laptop back the way it was.

"the other methods aren't working"
Well, what other methods have you tried that didn't work? Frankly, your post reads as a hoax, but I have some extra time on my hands, and an idea. Make an appointment with the Apple Genius at your local Apple store. You could also bring your MBP to an AASP. Regardless, either one should be able to remove the bottom cover, and use a plastic thingy (dang, what is that tool called?) to push out the offending bit.

How to know the size of the string with out using the length() method

i want to find the lenght of the
String s="Sudha";
with out using the lenght() method.

Not true (I mean the part about "The only String
call"). But if it had been true, I might haveagreed
with this:
Assuming one uses the 'exception' approach thenwhat
method other than charAt() is needed?I probably misunderstood your post, I thought you
meant that the only alternative to length() would be
charAt() and catching the exception.There are many ways and if the teacher had said find 5 ways of finding the length of a String then I would have fealt happier because it would have meant the student would have to read and study the whole of the String API.
I like
int length = (s+"sabre").lastIndexOf("sabre");

The demodulation method - how to know

Similar Messages

Maybe you are looking for