Dynamic Signal Acquisition

cancel
Showing results for 
Search instead for 
Did you mean: 

ni 4552 benchmark

have you already done a nice benchmark.vi for the NI 4552 board
including the linking with NI 6711
is it worthy to use RTSI bus or other tricks
0 Kudos
Message 1 of 2
(7,378 Views)
Hello,

Thank you for contacting the National Instruments Developer's Exchange!

Right now we do not have any example programs that control the 4552 DSA device and 6711 analog output device. I do not know about the details of your application, but I can give you some general tips on syncrhonization between these devices.

#1) If you choose NOT to use the RTSI bus, there are no limitations on using the boards in the same program. This just means there will be no hardware timing controlling the interaction between the boards.

#2) You can use the RTSI bus to synchronize the starting point of an acqusition on the DSA and a buffered waveform generation on the 6711. To do this, you would use the Route Signal.VI to send the AO Start Trigger on the 6711 to a RTSI pin, and
then route this RTSI pin to the "start trigger" signal on the DSA.

#3)Unfortunately, you cannot syncrhonize the scan/update clocks on these two boards beyond the starting point described in #2 above. This is because the DSA uses delta-sigma ADCs that use a different timing scheme than the DACs on the 6711.

#4) If you do wish to use the RTSI bus, you will not be able to program using the NI-DSA instrument driver to control the on-board DSP. Instead, you should use regular NI-DAQ calls.

If you have specific questions on implementing these suggestions, I'd suggest calling phone support or submitting a request to email support at www.ni.com/support/ask.

I hope this helps -- best of luck with your application!

Bryan Fry
DSA Product Support Engineer
National Instruments
0 Kudos
Message 2 of 2
(7,378 Views)