IQ demodulati​on board suggestion

Hi guys, I am looking for a high speed NI board that can perform the quadrature demodulation (for a 20 MHz signal), I have looked through the web but so far I can only find 5620, 5660 and 5142.
cos(wt) ----> Device under Test (DUT) -----> Acos(wt + theta)
cos(wt) is the original tranmitting signal (20 MHz). After it is passed through the DUT, amplitude change (A) and phase shift (theta) is then introduced into the output signal (the frequency still remains the same.) The purpose of this setup is to measure the amplitude change and phase shift, relative to the original signal.
Thus I need a simple I/Q demodulation board that can perform this job. Is there any NI board that one can recommend?
Or is there a board that can generate the driving signal and do the IQ domodulation at the same time? I think 5620, 5660 and 5142 can only perform I/Q demodulation process...
Each board costs quite a lot! Therefore I want to make sure that I am buying the right thing...
Thanks for the help!

Hello,
There are three digitizer modules that contain Onboard Signal Processing in the form of a Digital Downconverter (DDC): the PXIe-5622, PXI-5142, and PXI-5620. Each of these will perform quadrature demodulation in firmware. 
The PXI-5660 is composed of a PXI-5600 RF downconverter and a PXI-5620 digitizer, so the PXI-5660 is not a good option for you if you only need a baseband digitizer.
 All three are capable of acquiring a 20 MHz wide signal. Where that 20 MHz signal is centered in frequency, and whether the digitizer must be DC coupled will impact your options, so if you post more info about that I can help narrow down your choices.
As for options that include both transmit and receive, the above comments about the 5640R and 5641R are correct. 
Regards,
Andy Hinde
RF Systems Engineer
National Instruments
Message Edited by Andy Hinde on 01-28-2010 11:00 AM

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    0 libSystem.B.dylib 0x90024407 semaphorewait_signaltrap + 7
    1 com.apple.Foundation 0x92851c60 -[NSConditionLock lockWhenCondition:] + 39
    2 com.apple.AppKit 0x93363cb4 -[NSUIHeartBeat _heartBeatThread:] + 377
    3 com.apple.Foundation 0x927fbcfc forkThreadForFunction + 123
    4 libSystem.B.dylib 0x90023d67 pthreadbody + 84
    Thread 3:
    0 libSystem.B.dylib 0x90009817 machmsgtrap + 7
    1 com.apple.CoreFoundation 0x9082d227 CFRunLoopRunSpecific + 2014
    2 com.apple.CoreFoundation 0x9082ca42 CFRunLoopRunInMode + 61
    3 com.apple.Safari 0x00026b8d 0x1000 + 154509
    4 com.apple.Safari 0x00026a46 0x1000 + 154182
    5 com.apple.Safari 0x000269cb 0x1000 + 154059
    6 libSystem.B.dylib 0x90023d67 pthreadbody + 84
    Thread 0 crashed with X86 Thread State (32-bit):
    eax: 0x00000008 ebx: 0x00000008 ecx: 0xa0813d04 edx: 0xffffffff
    edi: 0x02671548 esi: 0x00000000 ebp: 0xbfffead8 esp: 0xbfffeaa0
    ss: 0x0000001f efl: 0x00010286 eip: 0x002b80b6 cs: 0x00000017
    ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037
    Binary Images Description:
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    0x91948000 - 0x919fafff libcrypto.0.9.7.dylib /usr/lib/libcrypto.0.9.7.dylib
    0x91a40000 - 0x91a56fff libcups.2.dylib /usr/lib/libcups.2.dylib
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    0x92bcb000 - 0x92bdbfff com.apple.ImageCapture 3.0.4 /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/ImageCapture. framework/Versions/A/ImageCapture
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    0x94849000 - 0x94854fff libCSync.A.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/Resources/libCSync.A.dylib
    0x948a0000 - 0x948bafff libRIP.A.dylib /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ CoreGraphics.framework/Versions/A/Resources/libRIP.A.dylib
    0x948c0000 - 0x94bdffff com.apple.QuickTime 7.6.4 (1327.73) /System/Library/Frameworks/QuickTime.framework/Versions/A/QuickTime
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    0x94f39000 - 0x94f48fff com.apple.DSObjCWrappers.Framework 1.1 /System/Library/PrivateFrameworks/DSObjCWrappers.framework/Versions/A/DSObjCWra ppers
    0x94f4f000 - 0x94f78fff com.apple.LDAPFramework 1.4.2 (69.1.1) /System/Library/Frameworks/LDAP.framework/Versions/A/LDAP
    0x94f7e000 - 0x94f8dfff libsasl2.2.dylib /usr/lib/libsasl2.2.dylib
    0x94f91000 - 0x94fb6fff libssl.0.9.7.dylib /usr/lib/libssl.0.9.7.dylib
    0x94fc2000 - 0x94fdffff libresolv.9.dylib /usr/lib/libresolv.9.dylib
    0x954f7000 - 0x9552ffff com.apple.PDFKit 1.0.4 /System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/PDFKit.framew ork/Versions/A/PDFKit
    0x9742f000 - 0x97506fff com.apple.QuartzComposer 1.2.6 (32.25) /System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/QuartzCompose r.framework/Versions/A/QuartzComposer
    0x9758f000 - 0x9758ffff com.apple.quartzframework 1.0 /System/Library/Frameworks/Quartz.framework/Versions/A/Quartz
    0x99427000 - 0x99450fff com.apple.CoreMediaPrivate 15.0 /System/Library/PrivateFrameworks/CoreMediaPrivate.framework/Versions/A/CoreMed iaPrivate
    0x99dc9000 - 0x99e00fff com.apple.Syndication 1.0.8 (56.1) /System/Library/PrivateFrameworks/Syndication.framework/Versions/A/Syndication
    0x9a750000 - 0x9a762fff com.apple.SyndicationUI 1.0.8 (56.1) /System/Library/PrivateFrameworks/SyndicationUI.framework/Versions/A/Syndicatio nUI
    0x9ba21000 - 0x9ba61fff com.apple.CoreMediaIOServicesPrivate 20.0 /System/Library/PrivateFrameworks/CoreMediaIOServicesPrivate.framework/Versions /A/CoreMediaIOServicesPrivate
    0x9fefc000 - 0x9ffaafff com.apple.QTKit 7.6.4 (1327.73) /System/Library/Frameworks/QTKit.framework/Versions/A/QTKit
    Model: MacBookPro1,1, BootROM MBP11.0055.B08, 2 processors, Intel Core Duo, 2 GHz, 1 GB
    Graphics: ATI Radeon X1600, ATY,RadeonX1600, PCIe, 128 MB
    Memory Module: BANK 0/DIMM0, 512 MB, DDR2 SDRAM, 667 MHz
    Memory Module: BANK 1/DIMM1, 512 MB, DDR2 SDRAM, 667 MHz
    AirPort: spairportwireless_card_type_airportextreme (0x168C, 0x86), 1.4.4
    Bluetooth: Version 1.9.5f4, 2 service, 1 devices, 1 incoming serial ports
    Network Service: AirPort, AirPort, en1
    Serial ATA Device: Hitachi HTS543216L9SA02, 149.05 GB
    Parallel ATA Device: MATSHITADVD-R UJ-857
    USB Device: Built-in iSight, Micron, Up to 480 Mb/sec, 500 mA
    USB Device: Apple Internal Keyboard / Trackpad, Apple Computer, Up to 12 Mb/sec, 500 mA
    USB Device: IR Receiver, Apple Computer, Inc., Up to 12 Mb/sec, 500 mA
    USB Device: Bluetooth USB Host Controller, Apple, Inc., Up to 12 Mb/sec, 500 mA

    Hi,
    You have part of the Community Toolbar installed, it's a third party plugin that isn't compatible with recent versions of Safari.
    Open a Finder window. Select MacintoshHD in the Sidebar on the left. Now open the InputManagers folder.
    Move these files to the Trash:
    CTLoader/ctloader.bundle/Contents/MacOS/ctloader
    Now from the same Library folder open the Application Support folder and move these files to the Trash.
    Conduit/Plugins/cttoolbar.bundle/Contents/MacOS/ct_plugins
    Relaunch Safari.
    Hope this helps....
    Carolyn

  • What's the best workflow for Home Movie Importing and Enjoying?

    I'm new to iMovie (and the mac) and have started importing all my home movies from my camcorder into iMovie. I quickly realized that movies take a huge amount of disk space and it may or may not be reasonable to import all my movies and keep them on the hard disk in .dv format. At 12GB/Hour I would need 1.2 Terabytes of storage (plus backup). If that is the best workflow, i'm happy to invest in a few terabytes of storage and back up. But before I do that, I want to check to see if there is a different workflow I should follow given my use case.
    Here is my use case:
    I have 100 hours of 8mm and miniDV tapes already and plan to continue creating more.
    I want to import them all into the iMac for ease of organization, searching for the clips of interest, and watch them either on my iMAC and also on my TV (via TIVO).
    I may do some editing, but this is not a big priority for me at this time. I may do more editing in the distant future when I have more time. My editing for now will be limited to rejecting portions of clips I don't want.
    I plan to watch the movies from my iMac on my TV via my TIVO (i've already ordered the Roxio Toast software that I understand I need, per the Tivo web site).
    The final piece of my use case is back-up. I'd prefer to back up my movies on disk this way I maintain any editing i've done in case of a disk failure. Depending on what video format is recommended, this may bump me into a RAID multi-terabyte system as both working and automatic backup?
    Here are my questions:
    Should I maintain my event library in .dv format? (and bite the bullet on the storage)
    Or is the .dv format intended only for temporary editing and users are expected to compress into another format after editing? if so, what format and which tool is recommended? (keeping in mind that I want to view the clips via Tivo and Roxio/Toast).
    If I need to byte the bullet and invest in storage, my quick math suggests I'll need about 2 terabytes for the library and 2 more for back up for a total of 4 terabytes!?. Is a RAID system recommended for this? (I was surprised that the Apple store did not carry such a system, so perhaps that is not the best option). What would you recommend?
    Anyone out there with a similar use case? I know I've asked a lot of questions here. I'd appreciate any recommendations you may have, even if you cant answer all of them.
    Thank you.

    I am in a similar mode, though about half as much existing DV footage.
    +Should I maintain my event library in .dv format? (and bite the bullet on the storage)+
    Short answer, yes; long answer:
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    +++++++++++++
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    list99: nobody 778 511 0 Jun 10 ? 0:01 /usr/apache/bin/httpd
    list99: nobody 637 511 0 Jun 10 ? 0:01 /usr/apache/bin/httpd
    list99: nobody 636 511 0 Jun 10 ? 0:01 /usr/apache/bin/httpd
    list99: nobody 779 511 0 Jun 10 ? 0:01 /usr/apache/bin/httpd
    list99: nobody 777 511 0 Jun 10 ? 0:01 /usr/apache/bin/httpd
    list99: root 5740 10012 0 12:32:38 ? 0:00 sleep 18
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    list99: praveen 22983 22654 0 11:18:47 ? 0:00 /usr/lib/ssh/sshd
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    list99: connie 892 209 0 12:28:32 ? 0:00 /usr/sbin/in.ftpd -a
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    list99: praveen 23004 22983 0 11:18:49 pts/2 0:00 -sh
    list99: praveen 2607 1209 0 11:29:09 ? 0:01 /usr/lib/ssh/sshd
    list99: root 5985 209 0 12:32:52 ? 0:00 /usr/sbin/in.ftpd -a
    list99: root 7350 209 0 11:30:35 ? 0:00 /usr/sbin/in.rlogind
    +++++++++++
    Thanks
    Praveen RK

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    Post Author: foghat
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