Anyone have an example of a PCI-6250 Digital and Analog Aquistion with Analog Post-Trigger?

[Drewski]

Hey All,

We're trying to set up a post trigger data capture of parallel absolute strobed Gurley 17-bit encoder data (ignoring MSB for 16-bit aquisition) with an analog signal that is the output of a torque load cell.  The trick is to use the analog signal level as a post-trigger to stop the data aquisition.

1) can the analog signal be recorded and used as the trigger?

2) does anyone have an example using the PCI-6250 (or 6251)

Thanks in advance for your help,

-Drewksi 

[Bueller]

Hi Drewski,

You can use the APFI0 line as an analog trigger for your signal. However, in this case you need to connect your analog signal to both the analog channel you want to acquire at and the APFI0 line.

Assuming you are using LabVIEW,you can check the "Acq&Graph Voltage-Ext Clk-Analog reference.vi" example. This examples uses an external clock but it works also with the internal clock. All you have to do to change the control to onboard clock.

You can find this example in LabVIEW Help >> Find Examples >> Hardware Input and Output >> DAQmx >> Analog Measurement >> Voltage

Best Regards,

Faris