Data Acquisition Toolbox

When Did the Trigger Occur?

You can return the absolute time of the trigger with the InitialTriggerTime property. Absolute time is returned as a clock vector in the form

[year month day hour minute seconds]

For example, the absolute time of the trigger event for the preceding example is

• abstime = ao.InitialTriggerTime
  abstime =
  1.0e+003 *
      1.9990    0.0040    0.0170    0.0100    0.0430    0.0252
  

To convert the clock vector to a more convenient form, you can use the sprintf function.

• t = fix(abstime);
  sprintf('%d:%d:%d', t(4),t(5),t(6))
  ans =
  10:43:25
  

As shown in the preceding section, you can also evaluate the absolute time of the trigger event with the showdaqevents function.

How Many Triggers Occurred?

Device-Specific Hardware Triggers