TriggerConditionValue (Data Acquisition Toolbox)

Specify one or more voltage values that must be satisfied before a trigger executes

Description

TriggerConditionValue is used when TriggerType is Software, and is ignored when TriggerCondition is None.

To execute a software trigger, the values specified for TriggerCondition and TriggerConditionValue must be satisfied. When TriggerCondition is Rising or Falling, TriggerConditionValue accepts a single value. When TriggerCondition is Entering or Leaving, TriggerConditionValue accepts a two-element vector of values.

Characteristics

Usage
AI, Common

Access
Read/write

Data type
Double (or a two-element vector of doubles)

Read-only when running
Yes

Usage	AI, Common
Access	Read/write
Data type	Double (or a two-element vector of doubles)
Read-only when running	Yes

Values

The default value is zero.

Example

Create the analog input object ai and add one channel to it.

ai = analoginput('winsound');
ch = addchannel(ai,1);

The trigger executes when a signal with a negative slope passing through 0.2 volts is detected on channel 1.

set(ai,'TriggerChannel',ch)
set(ai,'TriggerType','Software')
set(ai,'TriggerCondition','Falling')
set(ai,'TriggerConditionValue',0.2)

See Also

Properties

TriggerCondition, TriggerType

TriggerCondition TriggerDelay