Difference between Reference and Start in Triggering ?

[Shaft DAQ]

Hi

Can anyone explain What is the difference between the Reference and Start when Triggering ? and when should you use them?

Any commets will be very much appreciated..

Many Thanks in Advance

Mohamad

[K_Bull]

Hi,

Start trigger is the trigger signal used for post-triggered acquisition. The hardware starts the A/D conversions after the trigger is received.

Reference trigger is the trigger signal used for pre-triggered acquisition. The hardware starts acquiring data before the trigger signal is received.

For more information about this, please read the Tips and Techniques in DAQ triggering with NI-DAQmx

If you are using a DSA card, also read Trigger Condisions for Analog Start and Reference Triggers in the Same Channel for DSA Cards 

Regards,

[Shaft DAQ]

Many Thanks Kabul...

Mohamad