Marker0Event?

[labmaster]

Maybe, I didn't understand fully the name of signals, when and how to use them.  

The attachement is an example of sync between FGEN and DAQmx from example finder.

The trigger of FGEN is forwarded to RTSI 5 port.

The RTSI 5 signal was also used in the souce of sample clock of DAQmx.

But, I don't know why Marker0Event (not RTSI5) should be used to start a trigger in DAQmx.

(To my knowledge, any markers are not included in sequence mode of FGEN.)

What's the meaning of this?

In addition, how  can I find the details of some signal port names in Device Routes in "Measurement & Automation Explorer"?

labmaster

Message Edited by labmaster on 05-13-2009 07:52 PM

Message Edited by labmaster on 05-13-2009 07:53 PM

[Jordan F]

The niFGEN Create Advanced Arb Sequence.vi specifies a marker event at the first sample.  This marker event is polled by DAQmx to trigger the task.  So, the DAQmx task will trigger from the specified marker event when FGEN starts generating.     

The sample clock is exported from the Arb (master) across the PXI_Trig 5 line (RTSI 5) to the DAQmx device to share a sample clock.

To find more details on the signal names I would recommend to check out the NI Signal Generator Help or the M Series User manual because they will explain the signal port names in more detail.

NI Signal Generator Help

Start>>Programs>>National Instruments>>NI FGEN

M Series User Manual

http://digital.ni.com/manuals.nsf/websearch/2025C99AB0614F9E8625748000577B9A