| Data Acquisition Toolbox | |
Indicate the absolute time of the first trigger
Description
For all trigger types, InitialTriggerTime records the time when Logging or Sending is set to On. The absolute time is recorded as a clock vector.
You can return the InitialTriggerTime value with the getdata function, or with the Data.AbsTime field of the EventLog property.
Characteristics
| Usage |
AI, AO, Common |
| Access |
Read-only |
| Data type |
Six-element vector of doubles |
| Read-only when running |
N/A |
Values
The value is automatically updated when the trigger executes. The default value is a vector of zeros.
Example
Create the analog input object ai for a sound card and add two hardware channels to it.
ai = analoginput('winsound');
chans = addchannel(ai,1:2);
After starting ai, the trigger immediately executes and the trigger time is recorded.
start(ai)
abstime = ai.InitialTriggerTime
abstime =
1.0e+003 *
1.9990 0.0020 0.0190 0.0130 0.0260 0.0208
To convert the clock vector to a more convenient form
t = fix(abstime);
sprintf('%d:%d:%d', t(4),t(5),t(6))
ans =
13:26:20
Functions
Properties
| | Index | InputOverRangeAction | |