How to choose the source of sample clock as "analogecomparisonevent"

[Hellolight]

Hi, everyone. I am a beginner of Labview. Sorry to ask a so stupid question.  When I use the DAQmx Timing.vi as sample clock, I want to choose the terminal "analogecomparisonevent" as the source but I can not find it.  I use the Labview 8.5 and the DAQ card is NI PCI 6115. I add the source terminal of the "sample clock" in this way: right click the vi -- create -- constant.

Thanks very much for your help

[Hellolight]

Is there someone can help me ? Thanks.

[CWolf]

Hellolight,

If you right-click on the constant connected to the source input of your DAQmx Timing.vi, and then click on I/O Name Filtering... , you can check the Include Advanced Terminals option.  You should now see Analog Comparison Event as one of the options. 

-Christina