What is a single ton class?

What is a single ton class and in which type applications or context this class is going to be used?

Simply Singleton
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What does the extract single tone vi do?

When using an extract single tone vi, what does it actually do? Does it give the frequency, phase and amplitude of the HIGHEST amplitude wave? Say we provide a waveform of 400 samples of an undermined number of sine waves.....Are there any documents with block diagrams that explains this?

TooEagerToLearn wrote:
My head started hurting when I opened and went deep into all the subvis. All I would like to know what does the output represent?
1. Just the dominant frequency?
2. Amplitude corresponding to that frequency?
3. Phase (relative to what?)
yes, the strongest frequenc
Yep
A tone is assumed to be a sine wave. So if the first point is the positive peak, you would get 90 degrees.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
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HT2538 what do I do once it starts a single tone and rest again single tone and rests and repeats ?

what do I do once it starts a single tone and rest again single tone and rests and repeats ?

If you are still under warranty and/or have AppleCare, call them.

Extract Single Tone Information using Flat Top Windowing

Beginner here - Does anyone have any ideas on what would be the easiest way to create a function that would essentially perform the same function as the built in "Extract Single Tone Information.vi" only that instead of using Hanning windowing (as I noticed that this Vi does) I would be able to use Flat Top (or selectable windowing)? I basicly need to set something up that will accept an incoming Sine wave and apply FFT using Flat Top windowing then output the measured frequency and the amplitude of that frequency. I need to still be able to input the "advanced search" criteria into the VI and give it a frequency and tolerence to look for as I don't want to just look for the peak signal but at specific frequencies.

I am running Labview 7.1.1 (that's what my company uses and they refuse to upgrade). I can't open files built under anything newer than LV7.1.1.
I really don't want to just do a peak search of the entire spectrum and would rather enter a specific frequency to look for and the tolerance window (find peak at say +/- 2% tolerance away from known recorded frequency. This test is targeted as a production test we will be shipping to several parteners around the world to use in production. This will be a test fixture to perform testing on electret boom microphones. The fact that it will be used in a production environment there is potential for high levels of background noise (radios, floresent lights, people talking, etc) and therefore I need as much filtering as possible to only the frequency i am trying to measure. I will be outputting a specific frequency from a speaker and recording it back through the microphone under test via a NI USB-6211 DAQ.
Can anyone tell me if "Extract Single Tone Information fron Hann Spectrum.vi" has anything in it which would limit me to only inputting a Hann windowed FFT into the signal input of that VI? This is the VI which is password protected in my 7.1.1. copy of Labview. If it doesn't and I could feed it a Flat Top windowed FFT signal into it without problem I am golden. I can modify the other sub-vi ("FFT with Hanning") and the main "Extract Single Tone Information 1CH.vi".
Thanks for you continued input.
P.S. I am fairly new to Labview (<2yrs)

When is a single responsibilty class no longer a single responsibility?

Weird question I know but I am asking as I feel I contradicted myself by stating that I made a class called DataAccessManager a single responsibility class when in fact it doesn't only manage the data access but also manages the validation of the database. This validation however is done by a "Real" single responsibility class that does the validation. Point is is my claim that DataAccessManager being single responsibility true valid?

Well, a facade is by nature meant to be a simple access to a more complicated underlying structure. So you wouldn't be surprised to find that, internally, the facade is doing a number of things that are only loosely related to each other. But (of course) problems arise when the facade is doing things that are completely unrelated to each other. Then you're on your way to making it into the God class.
So the question is, what's related and what isn't? In your case, is validation part of database access or isn't it? The answer, you probably won't be surprised to hear, is... it depends. The database itself should manage referential integrity if it can: things like, you can't add an order to the database unless it's for a customer who is already in the database. But what about business rules like, you can't add an order to the database if the customer is flagged as "Bad Customer, Do Not Ship"? You might have a separate tier to manage this sort of thing, or you might try to build it in as a data integrity rule.

Static variable is single for class or single for JVM

Hello,
I have doubt, static variable is single for class or single for JVM. as per my knowledge static variable is single for class, but suposse i have an web application (war of an application ) i deployed the application twice with different context, supose yahoo and yahoo1. but the ditrectory structure and classes are same, if i have a statc variable in
a classof an application, if i change the static variable of one class of an application wether it will change the static value of the class of another application.
Example
          yahoo -> web-inf ->      classes ->MainPackage->     MyStaticClass->     static int i=9;
          yahoo1 -> web-inf ->      classes ->MainPackage->     MyStaticClass->     static int i=6;
          if i change the static value i in yahoo application to i=5;
          at the same time if i access the value i in yahoo1 application what i will get (wether 5 or 6).
Thanks.

A static variable is 'single' in its class.
A Class is 'single' in its ClassLoader.
There can be many ClassLoaders per JVM.
There can be many applications per JVM. Each one generally has its own ClassLoader.
Ergo there can be many instances of a Class, and therefore many instances of its static data.

Single tone beep on silent mode

My iPhone 6 (running iOS 8.1) started producing a low volume single tone 'beep' on silent mode. It's basically turning every sound you usally hear when the phone isn't on silent mode into beeps: One beep for turning on silent mode, two beeps on receiving a message etc.
At first I thought it might be one of the accessibility options, but I couldn't find anything close to this. What could be the problem?

@BPW
Check this out
http://talk.sonymobile.com/t5/Software-Updates/Lollipop-New-Features/m-p/955490#U955490
"I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)

What is a single term property in a node?

what is a single term property in a node?

Hi Raffi,
The term is Singleton. Check below links for your answer -
Single Tone Node in Webdynpro for Java?
http://wiki.sdn.sap.com/wiki/display/WDJava/CardinalityProperty,SingletonProperty,Selection+Cardinality
http://help.sap.com/saphelp_rc10/helpdata/en/7a/787e40417c6d1de10000000a1550b0/content.htm
hope it helps.
Regards,
Sen

[b]What is content Provider java Class & How is it useful?.[/b]

Hi,
I would like to know more details on What is content Provider java Class & How is it useful?. Appreciate precise answers on this.
Thank you,
Renga
Email : [email protected]

Portal Server allows multiple sources of information, applications, and services to be displayed within a single page or set of pages that the user can view in a browser. The page in which the content is included is known as the desktop. The various sources of content are displayed in rectangular areas arranged in rows and columns within the desktop called channels. A Java class, called a provider, is responsible for converting the content in a file, or the output of an application or service into the proper format for a channel. A number of providers are shipped with the Portal Server including a bookmark provider, an application provider, and a notes provider. As the desktop is imaged, each provider is queried in turn for the content of its associated channel.

Extract Single Tone.vi

does,anyone knows how to get the diagram of the VI :Extract Single Tone
Information.vi given un lv6i it is password protected.

TooEagerToLearn wrote:
My head started hurting when I opened and went deep into all the subvis. All I would like to know what does the output represent?
1. Just the dominant frequency?
2. Amplitude corresponding to that frequency?
3. Phase (relative to what?)
yes, the strongest frequenc
Yep
A tone is assumed to be a sine wave. So if the first point is the positive peak, you would get 90 degrees.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

How can you tell what version of JDK a class was compiled under

Kind Folks,
I have a Java application purchased from a vendor that is certified to run under JDK/JRE 1.2xxx. I recently received some extensions to the application from the vendor's consulting arm but I am having problems with the extensions. I believe the extensions were compiled under JDK 1.3xxxx but I need tp prove it to the vendor. Is there a way I can verify what version of JDK a class file was compiled under?
John Fowler

...version of JDK a class file was compiled under? Not sure that makes sense. The class files will run the same under both. The only difference you would see is if you got a class not found or a method not found exception. If the class/method does not exist in 1.2 but does exist in 1.3 then that is where they were compiled. Manually verifying that would take a lot of work. Running it, as long as you excercise all of the functionality, (and presuming your app is not eating exceptions/errors when it shouldn't) then you should get an exception telling you of the error.

Why is the amplitude smaller when using the Extract Single Tone VI to measure the amplitude of a signal?

Whenever I measure the amplitude of a signal using the Extract Single Tone VI, the amplitude is smaller than if I measured the signal by hand by positioning the top and bottom cursors to the highest and lowest peaks of the captured waveform. Should I not use the Extract Single Tone VI to measure amplitude? I'm using Labview 6i.

I'm not exactly sure but I think the amplitude from the Extract Single Tone vi is in peak volts (Vp). When you use the cursors on a scope set to the top and bottom peaks, you are measuring volts peak to peak (Vp-p). If the Extract vi amplitude is one half of your scope reading, then this is true. Just double your Extract vi amplitude to get the peak to peak voltage. It also depends on the signal. If your signal is a square wave from 0 to 5 volts (TTL), this is usually measured in peak voltage. A sinewave going positive and negative (from -5 to +5) is usually measured in peak to peak.
- tbob
Inventor of the WORM Global

What is '&' used in message class

Hi,
What is '&' used in message class with the message no in SE91.
Give me details idea on this.
Best Regards,
Chini

If you use '&' operator in your message, then you can pass the text/literals whatever you want to get display in the message.
For example,
In a message clase zmsg, there is a message like this...
018 Table & not exist
you can call this message from your program by passsnig the table name in to this message...
For example,
ztablename = 'BUT000'.
Message e018(zmsg) with ztablename.
Filling Message Texts Dynamically *
Message texts in table T100 can contain up to four ampersand characters (&) as placeholders. You can replace these at runtime using the WITH addition in the MESSAGE statement:
MESSAGE ... WITH f1 ... f4.
The contents of fields f1 ... f4 are then inserted sequentially into the message text in place of the placeholders.

What is the use of class Class

What is the use of class Class?

Sample use: if you are specifying the name of a class in a config file, you can use Class method newInstance to instantiate it.:
String classname = ...
Runnable r = (Runnable) Class.forName(classname).newInstance();
r.run();

In package /SAPAPO/MAT, what are the /SAPAPO/CL_PR_EEW* classes for?

General question:
In package /SAPAPO/MAT, what are the /SAPAPO/CL_PR_EEW* classes for?
Specific question:
Assume your client wants to add custom fields to the APO product master and display them on the standard screens displayed by the MATn transactions (e.g. MAT1)
Will the above EEW "enhancement classes" provide any way to customize the MATn screens (tabs, subscreens or even exits to pop custom screens)?
If not, then is there anyway to add custom fields to the MAT1 screens without doing a core mod?

Same question for XMDSER function group, particularly module
EXIT_SAPMMDUSER_001
(fires out of screen 100 initial master data maintenance)
I think this one will probably work, but it maybe a question of "timing", i.e. what customer action fires the PAI routines which ultimately fire the exit.
If a simple "ENTER" fires the exit, then we're fine.

What is a single ton class?

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