Using PXI-5431and PXI-1411 to test MPEG-2 encoder/decoder

[Havarti]

I am looking into a way to test and MPEG-2 encoder/decoder.  I have found the PXI-5431, that can generate a NTSC signal which is what I need and the PXI-1411.  So, I guess my question is would this be a good set up to use the 5431 to generate a signal and the 1411 to acquire the signal and do some comparisons to the two.  Has anyone done this type of testing?  What type of comparisons could be done to the two video signals to verify signal quality(I know very little about video signals)?

Thanks,
Brian

[ryanm]

Hi Brian,

It sounds like you are going to send a signal from the PXI-5431 to a MPEG-2 encoder/decoder decoder device to create a test signal.  The test signal will then be compared to the "ideal" signal, which was sent from the PXI-5431 to the PXI-1411.  Is this correct?

Ryan M.

Applications Engineer

National Instruments

[Havarti]

Ryan,

I want to connect two UUTs (Unit Under Test) together, one to encode the other to decode.  I want to use the PXI-5431 to generate composite NTSC into the encoder then acquire the same type of signal off the decoder with either the PXI-1411 or PXI-5122.  So the signal flow would be an analong NTSC signal into the encoder to be MPEG encoded then straight into the decoder to be MPEG decoded and then sent to the either the 1411 or 5122.

There is also a thread here http://forums.ni.com/ni/board/message?board.id=170&message.id=138334 I started on the same subject.

Thanks,

Brian