Blocksize illegal FFT-Module

Similar Questions

• frequency of the FFT is not compatible with matlab

  Hi all

  Please find .jpg in the attachment. The signal is generated by a signal generator and collected by datashuttle/3000. Then I use the "FFT module" and "statistical value" to find the position max (frequency). I also downloaded the data and processed by matlab FFT function.  What I find, is that the value of the frequency of dasylab is always slightly less than matlab. For example, when the signal generator gives 10 Hz, the dasylab indicate 9,77 Hz and matlab gives 9.99 Hz I used matlab for years, so I have confidence in it. There must be something wrong with my program or dasylab.  First I have is because of the resolution, so I changed the "statistical values - mode - based block and tick (not quite sure about this) parent block and a value for every 240 blocks, which is also for the sampling of matlab."  Unfortunately, there is no change at all. Can anyone help?

  Thank you very much

  Alan

  What is your size of rate and sample block DASYLab?

  Try to make the block size an even number, for example, if you sample at 1000 Hz, made the size of the block 500 or 1000.

  What is the equivalent block Matlab? The amount of data is used for the calculations.

  You can also use the module block average average more than 250 blocks and then use the module of statistical values to calculate the maximum Position.

• the large fft frequency

  Hello

  Before all sorry for my English, I'll try to do my best.

  I'm analyzing a data acquired with a FFT, but I want to refine or reduce the frequency of each 'window' (I only want to analyze the 0-350 Hz region)

  in order to see better where my maximum in the frequency domain is.

  If you have an idea where I can edit this wide frequency in order to refine the plot, please tell me!

  Thank you very much!

  The sample rate determines the scope of the FFT calculation.

  Using the Nyquist theorem, if you sample a 1000 samples per second, the FFT will calculate the range 1000/2 = 500 samples per second.

  You NEED to taste at least twice the highest expected frequency in order to use the FFT module to find this frequency.

  The resolution of the FFT module is determined by the size of the block. For the spectrum of amplitude by default, TFF will display a block which is also 1/2 on the incoming block. Size of block = 512, FFT block size is 256.

  You can increase the resolution by increasing the size of the block and also by changing the size of the block to a number which can divide the sampling frequency. For example, if the

  sampling frequency is 1000 and the block size is 500, the FFT output will have a resolution of 250 on a beach of 500.

  You can use the data window module to change the block size - increase it to use more data and to increase the resolution of the calculation of TFF. Decrease that it resembles an interval of time smaller and lower resolution of FFT.

  I hope this helps.

• power density spectrum

  I'm using strain gage accelerometers to collect data from acceleration axis X, Y and Z on channels separated as a way to quantify the vibrations in the cabin of an off-road vehicle.  Using the DASYLab "formula module" I put across the output of the accelerometers to read directly in gs, or 32 ft/s/s = 1 g.

  If I use the DASYLab 'fft module' to provide a spectrum of power for a waveform g time density vs generated by one of my accelerometers, what are the scale units which are delivered by the "Y/t diagram module?  I know that the x in the table scale units are Hz.

  I am producing a figure of displaying data that has the same format as power spectral density data presented in the figures in Mil - Std - 810 G method 514,6 Annex C.  This paper presents data from sprectral in the form of curves of (g ^ 2) frequency vs /Hz.

  So far, none of the data I gathered in my vehicle, looks something like the data presented in the in the mil specs.

  Thank you for reading the question, I asked, given it and answer this question instead of going some other marginally related topic. I sincerely appreciate your knowledge and your willingness to share.

• FPGA ni922 24 bit?

  I am trying to acquire data from a ni9222 located in the chassis-9014 9114, cRIO.

  But for some reason, the output data type is used as a 24-bit fixed point number?

  However the 9222 is module of the ADC 4 channels 16-bit 500ks/S.

  I want to run the data via a fifo (target scoped) to power a 2 channel FFT module (coregen), which accepts fixed point 16-bit numbers.

  I seem to be anyway to change or correct the accuracy.

  I increased the fifo to 24 bits to try to work around the problem, but then I can't seem to massage the 16-bit required format (that it should have been originally)

  All this in the area of the chassis/FPGA

  In another section of my main FPGA vi, I 16 bits of the data of NI9215 quite happily was sent down a DMA FIFO for the time real cRIO and connected to a USB key without any strange problems.

  PS are the example any screws available for the use of the FIFO coregen and the 7.1 FFT coregen?

  I use the labview 11

  In my view, that the data is being multiplied by a scale factor to convert the entry to volts instead of charges.  I think it's so when you mix different modules with different resolutions of data acquisition, the outputs are in volts and can be compared, etc..  I know that I changed the properties of some modules for the former counties old-fashioned, but I don't remember exactly how I did it.

  Bruce

• I just upgraded to FireFox 22.0, and now I get a Javascript error (error: illegal operation on the prototype of a WrappedNative object). What can I do?

  I just upgraded to FireFox 22.0 and am now a bunch of Javascript error windows when I try to sue for Gmail. The error message is: error: illegal operation on the object prototype WrappedNative

  'Disable your modules and add one by one (each requiring a reboot). If you have some sort of add-on downloader, this can be in conflict with your java/web browser. Hope this helps.'

• FFT to display with newspaper frequency axis

  Hello

  I'm trying to get my fft to display frequency (x axis) with a logarithmic scale.

  There is no option for this in the table y/t

  The xy graph has possibility of HRT, but I cannot "demux" the fft output signal successfully.

  I use DasyLab 12.

  Someone at - it ideas?

  Thank you

  Matt

  

  Use the time Base module (special offer) to extract the x axis out of the block of the FFT.

  

• Exhibitor block signal - Xilinx FFT v7.1 - FlexRIO - FPGA

  I use Xilinx FFT v7.1 IP (FPGA - OR 7965R, LabVIEW 2012). I am computing the FFT of real integer 16 bit signed.

  Bit 5 signal exposing block block floating point FFT in module v7.1 Xilinx FFT signed or unsigned? Pdf document talks shift to the right of the data output to use the dynamic range, mentions not moving to the left, neither gives sufficient detail on this subject.

  Is there a base value as format IEEE floating point should I use to find the correct output value?

  I guess that it is unsigned unless you have comments to the contrary. The basic behavior is to keep bits on the left in order to prevent any overflow, so the scale always implies move on to when you think that some of the more significant bits are unused. They provide an example of b00101 = 5, so that indicates there is no bias to apply.

• FFT on several channels in FPGA

  I have a client with a 9076 (Spartan-6 LX45) who wishes to perform the FFT on several channels of a module of 9205.

  I never run FFT on several channels and never run out of space on the FPGA before, but I strongly suspect that this could change that.  Before I start to code this and play, someone can experience with this scenario - that offer you an optimal architecture / let me know how many channels can I expect to treat?

  Hey Jed,.

  As someone who has done a very similar application, but with the DC/RMS measurements, I can say with confidence that Yes, this is going to change that... How many channels your client wants to do and what kind of flow? I was able to get up to 64 is going, but it took most all of the fabric, and I had to write my own calculation of DC/RMS multiplex VI. So under a flow of course (I think we had each channel was updated to 1 Hz with 1000 samples per channel). Therefore, when writing a VI that multiplexes across all channel data, you could theoretically get many channels out there, but you sacrifice a flow.

  Basically, I modified the existing Express VI to store its State in BRAM between each call and he's travelled to the number of channels * samples I was doing. Not terribly difficult, but your time trying to find a good balance for the given application.

• Unsupported ID of Module WLAN wireless module (702)

  Just bought new Intel® Dual Band Wireless - AC 7260 half Mini PCIe card

  After the installation, I get a message on boot to top

  No wireless module supported

  The system has detected that a modue wireless installed in the system is not supported.  System stopped.  If please remove device and restart.

  WLAN Module ID (702)

  For more information, please visit: www.hp.com/go/techcenter/startup

  I'm under notebook PC, HP Pavilion dv7-4183 cl with the latest version of the BIOS.

  Any suggestions on getting this Intel Wireless Card work?

  I want the 802.11ac with Bluetooth 4.0

  I don't understand why this card should not work.  Why HP would prevent me from using that card.  HP will change the BIOS for this card can be used?

  Called HP support today.

  It seemed to me more on this topic, and then he did.

  Conclusion.

  Do not buy HP.  Why?  Well, I understand that for the FCC regulations, they might want to limit what cards to put.  But my problem is that they do not go back and update the bios with new ones that meet regulations of the FCC.

  Do not buy Intel.   If you read the information that they provide User installation is "illegal."

  So why that I found this product on Newegg and Tigerdirect.

  If you look at the forums that I'm not the only one with a LOT of question is have it.

  So to summarize.

  My HP laptop cannot be upgraded to an internal AC wireless with Bluetooth.

• VMkernel journal fills message [bnx2x_extract_max_cfg:1846 (vmnicx)] illegal...

  Hello

  It's the situation...

  To upgrade a Server Blade HP BL460G1 with vSphere 4.0 Update 2 to vSphere 4.0 Update 4, also installed two patches (ESX400-201112401 and ESX400-201203001).

  ------Bulletin ID------ -----Installed----- ----------------Summary----------------
  ESX400-Update04         2012-04-03T11:00:58 VMware ESX 4.0 Complete Update 4
  BCM-bnx2x-1.64.32.v40.1 2012-04-03T11:14:15 bnx2x: net driver for VMware ESX
  ESX400-201203401-SG     2012-04-10T14:53:54 Updates VMkernel,VMX,hostd,VMware Tools
  ESX400-201203402-SG     2012-04-10T14:53:54 Updates Python package
  ESX400-201203403-SG     2012-04-10T14:53:54 Updates Curl RPM
  ESX400-201203404-SG     2012-04-10T14:53:54 Updates samba RPM and libsmbclient
  ESX400-201203405-SG     2012-04-10T14:53:54 Updates popt, rpm, rpm-libs, rpm-python
  ESX400-201203406-SG     2012-04-10T14:53:54 Updates libuser
  ESX400-201203407-SG     2012-04-10T14:53:54 Updates Kerberos RPMs
  ESX400-201203408-BG     2012-04-10T14:53:54 Updates tzdata
  
  

  This blade is in a C7000 enclosure with four Virtual Connect modules.

  Examine the log files after the update, found in the diary of vmkernel as follows:

  Apr 10 15:15:46 host1 vmkernel: 0:00:17:04.399 cpu4:4207)<3>[bnx2x_extract_max_cfg:1846(vmnic7)]Illegal configuration detected for Max BW - using 100 instead
  Apr 10 15:15:46 host1 vmkernel: 0:00:17:04.900 cpu2:4218)<3>[bnx2x_extract_max_cfg:1846(vmnic7)]Illegal configuration detected for Max BW - using 100 instead
  Apr 10 15:15:47 host1 vmkernel: 0:00:17:05.402 cpu7:4219)<3>[bnx2x_extract_max_cfg:1846(vmnic7)]Illegal configuration detected for Max BW - using 100 instead
  Apr 10 15:15:47 host1 vmkernel: 0:00:17:05.904 cpu5:4214)<3>[bnx2x_extract_max_cfg:1846(vmnic7)]Illegal configuration detected for Max BW - using 100 instead
  Apr 10 15:15:48 host1 vmkernel: 0:00:17:06.406 cpu4:4205)<3>[bnx2x_extract_max_cfg:1846(vmnic7)]Illegal configuration detected for Max BW - using 100 instead
  

  This message fills the log, do not allow other events can be displayed.

  The vmnic7 don't link not because in the virtual connection profile no network no assigned this interface.

  The problem with the message is resolved when I enable and disable in the virtual connection of the blade profile any network has this interface...

  Apr 10 15:16:05 host1 vmkernel: <6>bnx2x 0000:13:00.1: vmnic3: NIC Link is Up, 2500 Mbps full duplex, receive & transmit flow control ON
  Apr 10 15:16:05 host1 vmkernel: 0:00:17:23.626 cpu4:4220)<3>[bnx2x_extract_max_cfg:1846(vmnic7)]Illegal configuration detected for Max BW - using 100 inste
  ad
  Apr 10 15:16:05 host1 vmkernel: 0:00:17:23.960 cpu7:4209)<3>[bnx2x_extract_max_cfg:1846(vmnic7)]Illegal configuration detected for Max BW - using 100 inste
  ad
  Apr 10 15:16:06 host1 vmkernel: 0:00:17:24.460 cpu1:4217)<3>[bnx2x_extract_max_cfg:1846(vmnic7)]Illegal configuration detected for Max BW - using 100 inste
  ad
  Apr 10 15:16:06 host1 vmkernel: <6>bnx2x 0000:13:00.5: vmnic7: NIC Link is Up, 2500 Mbps full duplex, receive & transmit flow control ON
  Apr 10 15:20:09 host1 vmkernel: 0:00:21:27.998 cpu4:4208)<3>bnx2x 0000:13:00.5: vmnic7: NIC Link is Down
  Apr 10 15:20:12 host1 vmkernel: <6>bnx2x 0000:13:00.7: vmnic9: NIC Link is Up, 3000 Mbps full duplex, receive & transmit flow control ON
  Apr 10 15:20:13 host1 vmkernel: <6>bnx2x 0000:13:00.3: vmnic5: NIC Link is Up, 3000 Mbps full duplex, receive & transmit flow control ON
  Apr 10 15:20:14 host1 vmkernel: <6>bnx2x 0000:13:00.1: vmnic3: NIC Link is Up, 3000 Mbps full duplex, receive & transmit flow control ON
  

  However, when the server is reset, the problem with the message reappears.

  I didn't found any solution to this problem by searching google or VMware Kb.

  Please, if anyone has had this same problem, could share how to fix.

  Thank you.

  Have experienced a similar problem with HP BL495c G6 using the bnx2x driver.  There seems to be a problem with the driver for RedHat source that gets turned into an ESX driver and while this is just a problem of registration of cosmetics, it makes your newspapers pretty useless ESX.

  If you install the last pilot beam, it solves the problem (for example, http://downloads.vmware.com/d/details/dt_esxi40_broadcom_bcm57xxx_16211v401/ZHcqYnR0JWRiZCpwcA for ESX 4.0).  Go to the HP Support site to ensure that you get the right package driver for your server, I don't have on the link above to the support page for a G6 BL495 G1 BL460 you have, even though I'm assuming that updated drivers should be available for your server too.

• Workaround illegal restricted procedure

  I'm in a scenario where I need to run a trigger on - 'WE-DISPATCH-EVENT' of an ActiveX control
  
  Executing PL/SQL code contains keywords like next_record, validation, go_block
  
  The time of execution when the trigger is executed, I get an error:
  FRM-40737 illegal procedure NEXT_RECORD Trigger WE-DISPATCH_EVENT limited
  
  I'm on forms 6i
  Please suggest a work around...

  The best solution to this limitation is to use a Timer to run the built-ins limited. In your case, you must create a millisecond timer 1 in your Dispatch event trigger to the place where you want to run the integrated Restricted. Then, you will need to create level When-Timer-Expired (WTE) trigger shape/Module to manage the execution of your clock. For example:

  /* Sample On-Dispatch-Event trigger */
  DECLARE
     Timer_ID    TIMER;
  BEGIN
     /* Your trigger logic here... */
  
     --Point in your logic where you want to call the Next_Record built-in
     Timer_ID := Create_Timer('CALL_NEXT_RECORD',1,NO_REPEAT);
  
     /* Rest of your logic here, so long as it is not dependent on the
        execution of the Next_Record built-in.  For this, you would need
         to include this logic in the WTE trigger.  */
  END; 
  

  /* Sample When-Timer-Expired trigger */
  DECLARE
     v_Timer   VARCHAR2(30) := Get_Application_Property(TIMER_NAME);
  BEGIN
     IF ( v_Timer := 'CALL_NEXT_RECORD' ) THEN
        NEXT_RECORD;
         /* Include any logic here that was dependend on the
            execution of the Next_Record built-in. */
     END IF;
  END; 
  

  Hope this helps,
  Craig B-)

  If someone useful or appropriate, please mark accordingly.

• Server 5.2 php pgsql.so module does not

  After installation of macOS Sierra and Server 5.2, I find that Roundcube is no longer able to connect to a PostgreSQL database. I back down to the file php.ini configuration does not load the pdo_pgsql.so/pgsql.so modules. All the world has noticed this change?

  I see that the server still has its own php.ini file with extension to pgsql inside settings. However, the configuration of php is more load the server php.ini file, because it seems before. How could I do php load in the server's PHP.ini?

  I have this problem as well!

  It is very bad, I have a few site that using pgsql and they are now down until I'm looking for the solution!

• Illegal use of his apple ID change password Apple ID to stop?

  Change the password for Apple ID stop unwanted or illegal use his apple ID?

  Hello

  Yes as long as no one else knows the password.

  See you soon

  Brian

• use applications from some other illegal sites?

  Hello everyone. I want to know is some other illegal sites software download

  No, a bad idea maybe, but not illegal.