TV tuners ~ Modulation of Amplitude quadrature (QAM) tuner

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• Generator functions agilent modulated the amplitude of the voltage so that the signal

  Hello

  I'm new on the Labview.

  I need to provide a series of tensions with increases step on my device and it repeats again and again.

  For example, (5V 0V to 10V 0V 0V 15V) * 5 times

  In the past, I turned down on the generator Panel of Agilent 33220 functions by myself.

  It's stupid, so I will try to use the Labview to do the same.

  I have download the Agilent 33220 Vi function generator has and write a loop for to do this. It can work.

  But I found a problem. Each change of amplitude voltage, generator Agilent 33220 A functions will cease to exit and then output the new value.

  Because this short period of no output voltage, the dynamic behavior of my device will be destroyed.

  How can I do?

  You made a classic mistake. You have placed the Initialize and close inside the loop. The Initialize will, by default, perform a reset feature, which disables the output. Initialize outside a loop, do your stuff inside and close the loop.

  Regarding your code: I strongly recommend looking at the model of ramp function. It seems you want to increase the parameters of voltage to zero between the two. This can be easily done by creating your rising tensions ramp and then creating another matrix of the same size zeros and interlacing then the two tables. This will give you a complete range of voltage values, without to need two loops and determine what step you are on, etc. etc. For example, the following code will give you 5, 0, 0, 10, 15, 0 sequence fairly cleanly:

  

  In addition, never perform a comparison of equality on the floats. If not, you owe me nickel one another in my retirement fund.

• Where is Media Center TV Pack 2008 download?

  Can someone please give me a link to download Media Center TV Pack 2008?  I tried searching the site & can't find anything.  I found the "cumulative updates" but not the full download or origin.  I am running Vista Home Premium 32-bit so I'm looking to download the TV Pack 2008 compatible version for this version of Vista.  Thank you!

  Hi Redbird14,

  Here is the download link for Media Center TV Pack for Windows Vista

  February 2009 Cumulative Update for Media Center TV Pack for Windows Vista
    http://support.Microsoft.com/kb/958653

  It can also be installed in Windows Vista SP2.

  In order to know the TV channels that are supported by Windows Media Center visit the links below.

  TV signals that are supported by Windows Media Center
  http://windowshelp.Microsoft.com/Windows/en-us/help/ef5b8360-958c-425B-9529-2922167e78631033.mspx

  For more information click on the link below.
  You can see a smaller than expected number of channels listed in electronic Program Guide when you start Windows Media Center TV Pack for the first time on a computer with a Modulation of Amplitude in Quadrature (QAM) tuner installed.
  http://support.Microsoft.com/kb/955486

  Hope this information is useful.

  Let me know if it worked.

  All the best!

  Thank you, and in what concerns:

  Joel S - Microsoft technical support.

  Visit ourhttp://social.answers.microsoft.com/Forums/en-US/answersfeedback/threads/ Microsoft answers feedback Forum and let us know what you think

• Helps to amplitude modulation

  Dear users of Labview,

  Im having trouble with this Modulation of Amplitude. What I want is to change the Amplitude of a sine wave with a rectangular pulse as follows (see figure):

  

  The sine wave of the morning will be the entrance to my DAQ hardware. I thought that this is a strange modulation because I found no info on this type of modulation (only refer to the sine-by-sine modulation).

  Any help on this issue would be greatly appreciated

  Best regards, Dennis

  Amplitude modulation is just multiplication.  If you multiply your sinusoidal carrier by amplitude modulation signal, you will be there.  There are a lot of subtleties, but it's the essence of it.  The wikipedia article is a good overview and has some nice graphics to explain it.  In LabVIEW, you can multiply two arrays as easily multiply two numbers.  Just them wire for the primitive multiply.

• XP Media Center does not recognize the atsc tuner

  Comes with a mistake to try to at least one device with ntsc tuner.  I have an atsc/qam tuner.

  Operating system		System model
  Windows XP Media Center Edition Service Pack 3 (build 2600) Install language: English (United States) Local system: English (United States)		Dell Dimension E521 Inc. System Service tag: 1K6C6C1 (support for this PC) Chassis serial number: 1K6C6C1 Case type: Desktop
  Processor		Main circuit
  2.00 GHz Dual Core AMD Athlon 64 X 2 hides the central memory of 128 kilobytes 1024 kilobyte secondary memory cache 64-bit ready Multi-core (2 total) Not hyper-thread		Board: Dell Inc. 0CT A03 103 Serial number:... CN708216AQF10C. The bus clock: 1000 MHz BIOS: Dell Inc. 1.1.4 12/09/2006
  Readers		Memory modules
  349.53 GB drive hard usable capacity 292,35 gigabytes of free disk space HL-DT-ST DVD-ROM GDRH10N SCSI CdRom Device [scanner] TSSTcorp DVD +-RW TS - H553A SCSI CdRom Device [scanner] WDC WD5000AAKS-00UU3A0 [hard drive] (500,11 GB) - drive 0, s/n WD-WCAYU6672846, rev 01.03B01, SMART location: healthy		3072 MB usable memory installed Slot machine 'DIMM_4' has 1024 MB (serial number E82397F1) Slot machine 'DIMM_3' has 1024 MB (serial number E823981D) Slot machine 'DIMM_2' has 512 MB (serial number F802488F) Slot 'DIMM_1' has 512 MB (serial number F802485E)

  Hello

  1. What is the brand and the model number of your TV tuner card?
  2. is it compatible with Windows XP Media Center? She never worked properly on your computer?

  Method 1.
  First of all I ask you to install the latest drivers for your manufacturer's Web site TV tuner card and check out them.

  Method 2.
  Also, check out the methods listed in the articles below and check.
  You receive an error message "No. Tuner available" when you try to watch TV Online after connecting a USB TV tuner to your computer Windows XP Media Center Edition 2005
  http://support.Microsoft.com/kb/891108

  Update 1 for Windows XP Media Center Edition 2005
  http://support.Microsoft.com/kb/873369

  I hope this helps.

• Windows Media Center Vista don't tune in digital channels of PCI digital tuner tv.

  I recently installed a new Hauppauge WinTV HVR-1600 NTSC? ATSC/QAM tuner in my computer. Its a dual core 2.66 mhz 4GB Ram running Windows Vista Home premium with Windows Media Center. The tuner is made to work with Windows Media Center according to its box. He also had his own software cleaner, IE. WinTV, which I also loaded. I have an antenna hanging good input on the tuner card. That same exact antenna wire hooked to a digital TV Gets the following strings... 6.1 and 6.2 - 6.3 - 8.1 - 8.2-8.3-17.1-17.2 - 17.3 - 22.1
  WinTV those gets exactly the same channel list and can display them all. Windows Media Center, after the execution of the installation routine, list the same channels, but do not think that all. Problem channels are 8.2 - 8.3 - 17.1 - 17, 3.  These channels show in the guide as "No Data Available" and when you select them, there is no signal detected. Yet, channel 8.1 and 17.1 gave Guide and discover very well. It is interesting when you go through special antenna Signal: settings: TV: Digital TV the 8.2 problem channels - 8.3 - 17.1 - 17, 3 list all the and are verified with check marks and show full signal strength. I spent time trying to play with the Guides Add announcement & edit channels and add missing channels. Also, I spent time with "Set Up TV signal" several times.
  Any suggestions? Why is the windows media center grateful but not display secondary digital channels, still recognizing and displaying the primary digital channel very well. It can be the signal or the pilots, because MyTV of Hauppage shows them all very well.
  Help?

  Try windows update.  I use this card with media center 7 and had no problem getting all the digital channels.

• Windows Media Center will not recognize TV tuner Digital stations live

  I am trying to display and record all my content from TV on my laptop using my hybrid analog/digital TV tuner card. So far, the WMC recognizes the analog content. But my cable provider provides many channels of ClearQAM I can see on my TV without a decoder, just using the QAM tuner in the TV. My tuner card is supposed to recognize the QAM signals, so I should be able to view all unencrypted content (users) that comes through the coaxial feeder on my portable tuner. But no luck so far. When I set up the TV signal in WMC, the menu only listed setup analog cable my cable box, even though I know that my cable company provides digital content.
  I had actually upgraded my Windows Media Center to include the TV pack (downloaded from Engadget) but even this last version does not recognize digital channels. If I try to change the Program Guide and add them manually, all I get is static when I select the. I am at a loss to know what to do next. Is this a problem that should fix a new TV tuner? I heard good things about the AverMedia card, maybe I should just go that route? Can anyone recommend a new tuner card?

  Hey,.

  See this link:

  http://mymce.WordPress.com/2008/11/01/Vista-Certified-logo-TV-tuner-cards-vs-Vista-MCE-ready-TV-tuner-cards/

  This has all of the compatible TV tuner cards.

  See you soon.

• Windows Media, duplication of records center

  Why, sources multiple WMC insists on making back to back recordings of the same tuner?  I'm pretty well guaranteed that I'll have to watch all my records in order, since the first two minutes of the second record are still back in the last minutes of the first record.

  You are right - it is not a hardware problem.  It's rather a long (read: it has been like this for years and between several versions of Media Center) default logic assigning tuner that many of us over at thegreenbutton have complained ad nauseum.

  There is one thing that fixes it (sometimes):
  When you have two records, back to back, on the same channel, change the option "stop after ' for the first record a hard value (for example" 10 minutes"), rather than normal"xx minutes, when possible."  Who (sometimes, but not always) requires the first record to go long enough that it force MC to use a second tuner for the second record.

  You think it's boring?  I have 14 tuners (analog 4, 6 Clear-QAM and 4 CableCARD tuners in my main system (via 2 DualTV MCEB, 3 HDHRs and an InfiniTV4)) and still I get this.  Although there are several available tuners, it always does.  : evil: and ((shrug))

  Maybe he'll be fixed in the next version...

  HTH,
  Chris

  MS - MVP (Media Center) [If this post can help solve your problem, please click the 'Mark as answer' or 'Useful' at the top of this message.] [Marking a post as answer, or relatively useful, you help others find the answer more quickly.]

• No digital cable in Media Center?

  I am currently under a bridge GT5694 with Vista 64 bit.  I swapped the internal for a Hauppauge WinTV-HVR 1250 tv tuner card wireless card so that I could use the Media Center as a DVR.

  I am currently unable to get Media Center to listen to digital channels and can't seem to find any options under setting (or the tuner configuration) to make sweeping digital signals.

  The WinTV software is quite capable of tuning in quite a few digital channels unencrypted, but without channel guide or function DVR that I'm dying to WMC.

  I searched for the corrections online, but none seems not to work.

  Any suggestions?

  Apart from the suggestion of Santosh to ensure that Windows is completely up to date on updates ('important' and 'optional', as there have been several updates to Media Center that fell in both categories), I also recommend that you install the driver package Media Center specific 'good' for this tuner from Hauppauge rather than the drivers updated or CD provided by Windows.
  Go to http://www.hauppauge.com/site/support/support_hvr1250.html, then click on the "Install Windows Media Center" tab on this page.  The package you want isMCEKit_setup - it includes the specific drivers for Media Center (as an encoder software for the analog tuner on the card) which are not included in the package 'standard', or provided through WU.

  Once you have installed the drivers of such (and rebooted), restart the installation of TV in Media Center.  If MC now gives you the option to set up two tuners (should be), go with it. If not, try selecting "no, I would like to manually configure my signal" - OK now?
  When you configure sources Guide tuners, you'll select for the analog tuner and for the digital tuner.

  A couple of useful things, too, to put in place a Clear QAM tuner in Media Center (once you get to recognize the tuner, of course):
  How to set up a digital cable (ClearQAM) tuner in Windows 7 Media Center: http://www.hdtvtunerinfo.com/win7mcqamsetup.html
  Channel range SiliconDust server: http://www.silicondust.com/support/channels/
  The first is a good how-to on setting up; the latter is (often) needed to help mapping channels to Guide listings.

  If you are still unable to put in place the two tuners in Media Center, I recommend doing a reset database (sometimes, ah, stuck...):
  Open an elevated command prompt.  Run the following command: C:\Windows\eHome\mcupdate.exe - MediaCenterRecoveryTask
  (Note the space between the .exe and the dashboard).  Let it run for a few minutes (I don't remember if it will give you a "I'm done" - type confirmation), restart and run the Media Center Setup again (that MC should encourage them to you on his own - he must perform installation of first broadcast.)

  HTH,
  Chris

  MS - MVP (Media Center) [If this post can help solve your problem, please click the 'Mark as answer' or 'Useful' at the top of this message.] [Marking a post as answer, or relatively useful, you help others find the answer more quickly.]

• Media Center Windows disable alert 'No TV Signal'

  I have a Windows 7 x 64 media center PC with 2 tuners Haupauge 2250 PCIex a double tuner, and a 2650 dual tuner USB w / card connected to Comcast cable.
  Two tuners work very well. The 2250 PCIex has no cable card, so it only gets clear QAM signals. Of the 2650 GETS clear time and encrypted QAM.
  I receive many NAGs "no TV signal. How can I disable this Nan? It always saves the show on which he nags.
  Is there a way to just disable all of these unnecessary NAGs?

  Hello

  You can read the following article and check:

  http://experts.Windows.com/FRMS/windows_entertainment_and_connected_home/f/114/t/79859.aspx

• How to use the USRP2920 as a CW transmitter

  Hello

  For a simple application, I would use the USRP2920 as a CW transmitter.

  I would like to generate a signal cw about 101 MHz and the frequency and the amplitude of the signal will change while the program is running.

  My first idea was to use the AM modulation with amplitude zero. In this way, only the the carrier signal was generated. I could also simply defined a complex I / Q vectors by zeros.

  But I have not found a way to change the amplitude of the carrier.

  Any suggestion?

  By the way (...), I need a solution to tomorrow...

  Thanks for your comments

  HB - UM

  Hello Anthony and Sarah,

  first of all, thank you Anthony, that was my first question at the beginning of this thread...

  Now, everything works well since I could finally do an update of the image and the firmware!

  with my best regards

  HB - UM

• problem with media center and digital map cable ATI

  Installed a tuner with a media center W7 ATI digital cable.  Cable company (Cablevision) active the card and check the signal, all OK.  Several problems. First of all, on channels it tells me that I need to activate windows that has already been done.  In the second place, on channels not premium I only get standard definition not hi-def.  With my old card of clear QAM tuner, I had hi-def on non coded station.  Verify all the information cable card and everything is ok.

  Did you run the digital cable Advisor in Media Center Extras Gallery and
  enable digital cable support?
   
  If this has been done with success and you still have problems:
   
  Where did you get the ATI DCT and he points out what firmware? You can check
  This in the network window.
   
  Saturday, August 28, 2010, 02:33:01 + 0000, Bob 3100 wrote:
   
  > Installed a tuner with a media center W7 ATI digital cable.  Cable company (Cablevision) active the card and check the signal, all OK.  Several problems. First of all, on channels it tells me that I need to activate windows that has already been done.  In the second place, on channels not premium I only get standard definition not hi-def.  With my old card of clear QAM tuner, I had hi-def on non coded station.  Verify all the information cable card and everything is ok.
   

  Barb Bowman

  http://www.digitalmediaphile.com

• Generation of amplitude modulation and frequency modulation

  How to generate AM and FM using simulate block signalling.

  This is not possible with just the simulate signal vi express. You'll need to generate a signal by using this vi and then make your own amplitude and/or frequency of the generated signal modulation.

• DVB - T TV tuner on dv5-1024el mount module

  Hi eveyone,

  my laptop HP pavilion dv5-1024el (windows 7 x 64) is and I would like to ask if it is possible to mount the module tuner DVB - T TV (spare part number 482899-003). I saw that some similar models are sold with this default part, but my laptop is not. Therefore, I was asking if there are some technical reasons why this notebook is provided by default without this part. I just want to be sure before buy you!

  Thank you

  pirucone

  Hello

  There are dozens of models dv5-xxxxaa, only one has these options, one model has these options and you will have to pay for component parts snap. Your machine is a single model.

  Based on this book

  h10032.www1.HP.com/CTG/manual/c01550108.PDF

  You can add the DVB - TV to your computer, BUT you need more than this module, you must buy the antenna module and can be a software to go with it.

  Good luck.

• How can I generate modulated amplitude signal?

  How can I generate modulated amplitude signal?

  I got this VI examples NOR but in this VI "m message signal .vi is missing. So, how can I generate missing VI or VI full for the Amplitude modulation signal using 5441 PXI and PXI-5610 as upconvertor. If possible guide me steps to generate.

  Thank you and best regards

  Isabelle Kodgirwar

  Graduate student

  University of Texas at Arlington.

  Hi Aron,