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simultaneous analog input output using PCI 7030/6040 possible?

I am using PCI 7030/6040E.I am facing 2 problems.
1)I want to acquire some analog signal then do some manipulation and send it out through the output channel continuously.I have tried to use the "simultaneous ana ip/op vi " example which came alongwith labview.but got the error message that the board does not support multiple buffers.what is the problem?this particular bord does not support simult. i/p and o/p? or, is there any solution?

2)second problem :
it is told that after you embed and run code in the Real-Time Target, it will continue to run even if we change the target to host labview.it is true for analog input.but when i do analog output, if i change the target to host labview, immediately the
vi stops and analog output ends.why?

3)is it possible to run more than one vi on the Real-time target simultaneously?
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I had read the next article, that said you have measurement multithreading in NI-DAQ7, the web is:
http://zone.ni.com/devzone/conceptd.nsf/webmain/111A3167AB05E5C286256D2600728203?opendocument&node=dz00000_us

Good luck!!
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