Above-High-Level Triggering Mode with PXI-4472

[AKlijn]

In the PXI-4472 User's manual (April 2003 edition), Figure 3-9 shows a trigger that is active when an analog input is above a specified high Value. To which trigger is this figure referring? Also, I have seen the Configure_HW_Analog_Trigger function but do not see a VI that accomodates this function. I would like access to this trigger that is always high when the analog input is above a certain level.

[Jeremy R.]

These triggers are analog level triggers that are taken directly from one of the analog input channels. In LabVIEW, the DAQmx Trigger.vi can be configured to the trigger type that you need. In the shipping examples (Help >> Find Examples) for LabVIEW, a good example to look at would be Acq&Graph Voltage Int Clock Analog Start.vi.

For Traditional DAQ, the AI Start.vi is used to configure the trigger. The example Cont Acq&Graph(buffered) Hard A-Trig.vi is a good referrence for that. Hope this helps.

Best Regards,
Jeremy R.
NI - Applications Engineer