Recovering carrier signal from AM demodulation

Hi everybody
I am trying to implement a full AM system I able to modulate and demodulate the baseband signal but could not create carrier signal.So any help would be thankful....Niladri
Attachments:
Funtion generator1.vi ‏23 KB

Hello Ramsey,
I assume you are trying to capture these AM signals and compare their relative phases all against each other. Sort of like saying the AM 1300 carrier is X degress in phase different from the AM 1530 carrier.
This is what I would do. I would use the full PXI-5661 RF analyzer and capture the entire AM band in the acquisition. This is roughly a 1 MHz bandwidth. At this low bandwidth, a low IQ sample rate can be used with the PXI-5661 (1.25 MSamples/sec gives the PXI-5661 a 1 MHz IQ data BW). With this low IQ rate, you could actually stream the entire AM band to hard drive for some time.
Since you have recorded the AM band to disk for a period of time, you can extract all the relative phase information you want. And the receiver reference is the same for all acquired data so the only variation will be due to the Tx side.
Look at this example:
RFSA Acquire Continuous IQ.vi
located at:
C:\...\<LabVIEW>\examples\instr\niRFSA
Regards,
Andy Hinde
National Instruments

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Attached herewith is a print screen of what is showing on MAX
The CAN ports are on NI PXI-8461
Hopefully that clarrifies something.
Attachments:
Untitled.png ‏212 KB
Untitled.png ‏212 KB

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Attachments:
Getting Started with Labview.pdf ‏901 KB

Hi Ashwin,
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How to read and display a signal from my PIC Microcontroller onto Labview

Hi,
I am doing a project on a Pulse Oximeter and i am trying to read and display the signal from my PIC Microcontroller on Labview? How do i go about doing it? I am using the PIC16F877 and also making use of the USART?
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Also, i am using the RS232 serial interface to connect to the PC? The connector i am using is the DB9 Connector. Which template and VI can i use? Am i supposed to use the NI-DAQmx and VISA? Also, for my USART connection, i am using the MAX232 Driver which is applicable for my application as i am working with +5V. So far, i have been reading and trying out on Labview and the steps i have taken are:
1) Open a New VI and used the Instrument I/O(Read & Display) template?
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3) I was reading the Labview Manual, 'Getting Started with Labview' and i was following the steps under Page 55, Communicating with an Instrument. Am i on the right track?
4) How do i check and make sure that the port settings of the I/O Assistant and my PIC Micro Match
Please help me out and guide me through the process. I am student at a polytechnic and i am very new to Labview and the software is used as a development tool for the project. I have a deadline to meet and i hope i can get a response as fast as possible. Your help will be kindly and greatly appreciated. I hope to hear from you guys soon.You can e-mail me all your answers at [email protected]
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Ashwin Kumar Mansukhani
Attachments:
Getting Started with Labview.pdf ‏901 KB

Hi Ashwin,
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Recovering carrier signal from AM demodulation

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