05-02-2017 11:49 AM - edited 05-02-2017 11:51 AM
Hi,
here the problem, I have a PXIe 6356 card mounted on a PXI 1042q chassis. On the REf in of the PXI chassis I have routed in a REF 10 MHz that comes from an atomic clock.
I have to use 6 AI of the 6356 and I would like to know how I can be sure that the time base used by the card is the REF 10 MHz I routed in. From the manual seems the 6356 can Phase locked only to 100 MHz. Can I use as time base for my acquisition an external 10 MHz ?
Thank you in advance for your help,
Cola
05-17-2017 06:41 AM
Hola Hola,
Take a look at the following article about PXI synchronisation.
http://digital.ni.com/public.nsf/allkb/64154143B6B898AA86256C2B006D11CC
You'll find that when a clock is present on the PXI_CLK10 IN it will automatically override the PXI system clock.
Afterwards when you use the DAQmx Timing.VI for you analog input task and select the PXI 10 MHz clock as a reference that will actually be selecting the 10 MHz clock from your atomic clock.
Have a nice day!