How thre cutoff frequency

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• Agilent 33250 A driving, how to avoid frequency rounded up/down

  Hello

  I want to control an Agilent 33250 A generator using LabVIEW to obtain different waveforms with a specific frequency, amplitude values. I use Agilent 33XXX Series.lvlib: Configure Standard Waveform.vi

  My problem is that when I give a value of frequency of 79 999 Hz 996 (79. 999 996 MHz) for example, the program will round the value to 80 MHz. How can I give a frequency value, as above, without rounding upwards or downwards?

  Thanks in advance.

  Look at the VI and see how is the string format. The result of the conversion of a string to the probe and see what happened to the instrument.

• How to increase frequency resolution in the power spectrum?

  All,

  I work on the analysis of data GET vi, and manage mucho when it comes to display a simple power spectrum which gives a precise simulation of sine wave frequency I use now.  Most of the brain waves are between 1 to 50 Hz, and so I try to get a resolution of at least 1 Hz frequency.  However, no matter what I do (increase the sampling frequency, use different sub vi and blocks), the chart plot only in frequency of 10 Hz increments.  I know this must be a simple problem, but I can not find good documentation on this and would appreciate any advice anyone could give on this problem.  I'm racking my brain here!

  Nick

  You need to acquire a second data to get the 1 Hz resolution.  The increase in sampling rate only increases the bandwidth that covers the FFT.

  Frequency resolution = 1/sampling

  Scale of frequency rate of sampling/2 =

  For your application, you will need to have a sample of at least 100 Hz rate.  At this rate, you must purchase 100 samples to get the 1 Hz resolution.  At the 1 kHz sampling rate, you will need to acquire 1000 points for the 1 Hz resolution.

• How current function (frequency) of the output to the last value in HP8510c

  Hello

  I have been using HP8510c for the calculation of the Q factor, the problem is, I need every S21 801 frequency values I get the raw data, in order to get the loaded Q factor.

  I use the STIMULUS as "RAMP" just for your information, which is also the default option.

  I couldn't understand this so, what I thought to do was get the frequency start and end and he interpolated between 801 points.

  Now I'm using vi 'Ouput function Active' that displays the value of any function, I chose. So if I select start and use this vi, he's going to show me the frequency of 'start '. But the problem is that the I don't get the whole figure.

  If it appears on the screen

  START = 4.46647456635 Ghz

  It will be output as

  4.46640000000 Ghz

  It is not that the GPIB bus truncates the data, I feel that the HP8510 firmware is configured to do this. What is another way by which we can get the value of the exact frequency?

  The accuracy is ideal for the accurate measurement of factor Q.

  LabVIEW does not otherwise deal with him. Your VI isn't close to being correct since you connected the County return since writing to the entrance of count bytes to read. There is absolutely no connection between the number of bytes you write and the number of bytes that the instrument will return. The number of bytes of the value to a number and see if it starts to work magically.

• How Smartphones blackBerry frequency search new phone email?

  Hello

  On my computer with Windows Mail, there is an option for how many times I want the program to check for new messages, for example: check every 15 minutes. Anyone know how many times the blackberry 8900 check new messages, or if there is an option to change the setting?

  Thank you, Matthew

  BIS accounts on a systematic POP mail server will check every 15 minutes and push new email, then check again in two minutes and push new messages and repeat that during two rounds of two minutes until no new message is found and then go back to the cycle of 15 min, etc., rinse and repeat.

  BIS IMAP accounts are instant push. Google and Yahool mail are instant.

  There are no options for changing the cycle. It is determined by the type of the mail server you are using.

• How three type of the structure of the tab in the apex

  Hi all
  
  I have a requirement where I need to organize the tabs. but the levels are 3.
  
  Apex provides only 2 level tab structure, I am trying to host 3 rd level with using the left menu, which can be shared by all pages.
  
  or
  
  I'm looking for level3 navigation... which makes the user to move easily from the application.
  
  Please post your suggestions how.

  Gregory,

  Lists are created Home > Application Builder > Application 99999 > shared components > lists. Each list entry then target a page. Once your list is built with all the necessary entries, add to the list as a region to each page that are targets of the entry in the list. Generally, I put my list at the top of the page by giving it a low sequence.

  In each entry of the list, set the entry of current list > list input current for the Condition on the same page as the target. This will highlight the entry from the list when you click it.

  When you set your list, play with the model list to determine which best meets your needs and requirements. List button model provides that a 3rd level of the navigation and the list of vertical side bar provide navigation to the left of your page.

  On the secondary tab that calls one of your goals from the list, it will take change in the section tab also run for Pages so that the secondary tab keeps up-to-date when navigating through the list. This parameter must include all of your pages list target, separated by commas, IE 1,2,3,4...

  Jeff

  Published by: jwellsnh on October 28, 2009 09:00

• How to control frequency, a member server, the time of synchronization to a domain?

  I have a domain with two servers and a domain controller or a member server.  Synchronization DC his time with an external source and provides the source of time for the field.  Generally all works as expected.  However, the time on the Member Server derives from the network.  "Time net/set/y" running manually on the member server corrects the Member Server, but it moves again.

  A solution would be to manually run a script on the Member Server, every hour to make sure that it is time remains synchronized. However is there a way to configure the Member Server so that it automatically keeps in sync with the network it's time?

  Environment: Server Win 2008 R2, s client pc Win 7

  This issue is beyond the scope of this site and must be placed on Technet or MSDN

  http://social.technet.Microsoft.com/forums/en-us/home

  http://social.msdn.Microsoft.com/forums/en-us/home

• How determine the crossover frequency

  I'm having a hard time to understand how the high-pass filter determines vs high frequency. What value it measures. ? A change of RGB values or contrast? I see the sharpness of words or blur, but what values determine the amount of blur or sharpening? Is there and the actual frequency being high or is it just a metaphor to compare it to the audio crossover?

  No details on the workings of this filter is appreciated.

  A few additional explanations:

  Audio signals:
  frequency = cycles per second
  It is the frequency in the time domain.
  An arbitrary signal can be represented by a set of harmonic signals (sine, cosine)
  In addition, some DC (direct current, non-periodic component).
  A typical high-pass filter for audio signals:
  The cut-off frequency fc is at the transition between the increase in gain
  (low frequencies) and fixed gain 1.0 (high frequency).
  frequency reduction (mitigation)
  CF 0.01 0.01
  CF 0.10 0.1
  CF 1,00 0.707
  10.0 fc 1.0
  100 CF 1.0

  A typical high-pass filter for digital images:
  frequency = cycles per unit of length or (better) cycles per pixel
  It is the frequency in the space field.
  The highest frequency is 0.5 cycles per pixel (alternation of black and white pixels)
  A line of arbitray in a digital image can be represented by a set of harmonic signals
  In addition, DC-part.
  Each channel that r, G, B is filtered individually, one after the other.
  Frequency and gain are as above.

  A high pass filter applies to mitigation<1 to="" low="" frequency="" signal="">
  and removes the DC component entirely. This would result in a black background.
  Therefore, the background is extended to R = G = B = 128 (8 bits per channel) or
  R = G = B = 0.5 (standard).

  Edges contain stronger high-frequency components. These are preserved.

  http://en.Wikipedia.org/wiki/high-pass_filter

  In this doc, we find a simple implementation:
  y [0]: = x [0]
  for i from 1 to n
  y [i]: = a * y [i-1] + a * (x [i] - x [i-1])
  return y

  x [i] are values of R (or G or B) row in column i in the original image
  y [i] are values of R (or G or B) on the same line in column I after filtering.
  Factor (a) indirectly contains the cutoff frequency.
  This example does not yet apply the SHIFT R = G = B = 128.

  The implementation can be different (filter not recursive instead of recursive, as indicated above,
  higher order instead of first order, using a filter kernel 3 * 3 5 * 5 pixels instead of work
  in each row independently).

  I'm not trying to explain how Photoshop!  There are so many alternatives.

  Cordially - Gernot Hoffmann

• How to understand the relationship between the character of frequency and nonparametric estimation of the system?

  Hello:

  I am on the show dealing with the identification of the system. The process is as below:

  First of all, I use a sine sweep signal (bandwidth is 0 to 50 Hz) to stimulate the actuator;

  Second, I use a low-pass filter (the cutoff frequency is 45 Hz) to filter the response signal, like the image below.

  
  

• How can I get the Coefficients of scaling for the Butterworth filter FPGA version

  I am trying to program a FPGA application where I need to be able to change the cutoff frequency of the filter.  I see that I can do a terminal for the coefficients of the filter on the VI express Butterworth filter, but how to generate the coefficients of different cut-off frequencies of filter?  When I use the VI of Coefficients of Butterworth host-side small floating-point values rather than the large fixed point values I see on the side turns FPGAS.

  Thank you

  David R. Asher

  Hi David,

  8.5 or 8.6, there is an example of navigation that contains the Subvi design filter you need:

  examples\R Series\FPGA Fundamentals\Analysis and Control\Filter and filter Butterworth Reconfigurable DC-RMS\Using-R - series.lvproj

  In LabVIEW 2009, there is a new palette in my computer: Interface FPGA > scaling, with a new VI of Coefficients of Butterworth on this subject. Who will produce the coefficients quantified, you need in the format expected by the FPGA Butterworth filter.

  Kind regards

  Jim

• How to set the low-pass analog input (smoothing) on my DAQ configuration filter?

  I read the following of the PXI-6251 manaual:

  "On some devices, the cut-off is fixed. On other devices, this filter is programmable and can be switched to a lower frequency. For example, the hardware OR of the 628 x have a programmable filter with a cutoff frequency of 40 kHz that can be activated. »

  It does not explain how you know this value. So, I have the following questions:

  1. How will I know what the cutoff freq is on my device?

  2. How do I know if its programmable?

  3. how this program if it is programmable?

  I use the PXI-6251 in conjunction with the PXI-1031.

  Thank you very much.

  The PXI-6251 has no anti-aliasing/programmable filter. Bandwidth (-3 dB) small signal from the 6251 is 1.7 MHz.You will find these information in the specifications manual.

  If you need a filter, you must add the signal conditioning yourself.

  The 628 x M high precision tips are the only cards of the series M 'programmable' low pass filter. Check this KB for more details.

  I hope this helps.

  Luca

• How to get data not filtered as o/p of the low-pass filter Group

  Hello

  IM new to Labview and exploring it.

  IM implementation of a system in which I need to use a LPF and a series of filter pass band.

  The filtered o/p of the LPF is as I / p for 1 GMP...

  Later, the o/p UNFILTERED 1st BPF is as I / p for 2nd GMP.

  The problem im facing is: I do not see any box in treatment that gives the data filtered or unfiltered together in the time domain of the signal.

  Could you please help me with this asap... desperately need your help.

  Thank you

  PSADAP

  There is not direct the tool to do this, but there is a solution to your needs.

  Say that if you use a LPF (with cutoff frequency, say 50 Hz), now to get blocked (UNFILTERED in your terminology) signal, set a HPF (with cutoff frequency of 50 Hz).

  See the block diagram

  

• How to get all netwok available provider mode list &amp; network to all providers in blackberry?

  Hello

  How to get all the list of available network provider & fashion network (2G or 3G) as all providers in blackberry?

  I read class RadioInfo he methods getNumberOfNetworks() y & getNetworkName() help I got from the available networks list but still not get all providers network mode.

  Any body knows then please help me

  Is it possible or not in Blackberry please tell me...

  Please see this link
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  I am currently trying to hire some experts Eloqua (junior, specialist and Manager to be precise). I can't really get to know the experience of what the people is with Eloqua without meeting face to face and really dig in.

  What I'm asking is, if someone created a questionnaire, or 'task' for an applicant to complete that would really give me an idea of their experience with Eloqua?

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  Wondering if they have never setup a data clean program or ask them to describe in detail how they have implemented a natural program, what feeders or exclude whether they use, how they manage frequency CASL or by e-mail, ask email deliverabilty and how they track. Get really specific and if they can't answer or don't know what one of these things is that they are not a good fit. This could also be a good way to just see what other companies are doing and maybe get some advice on how to implement things yourself.

  I hope this helps a little.

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  My apologies mate, there were a few series dv6-1300 that was shipped with the GM45 chipset which has native DDR2/DDR3... This information is correct, it is a function of the chipset... Check this box... http://Ark.Intel.com/chipset.aspx?FamilyId=35515

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