xPC Target

trigger

Software-trigger the start of data acquisition for one or more scopes

Syntax

MATLAB command line

• trigger(scope_object_vector) or scope_object_vector.trigger
  

Arguments

scope_object_vector

Name of a single scope object, name of a vector of scope objects, list of scope object names in a vector form [scope_object1, scope_object2], or the target object method getscope, which returns a scope_object vector.

Description

Method for a scope object. If the scope object property TriggerMode has a value of 'software', this function triggers the scope represented by the scope object to acquire the number of data points in the scope object property NumSamples.

Note Only scopes with type host store data in the properties scope_object.Time and scope_object.Data.

Examples

Set a single scope to software trigger, trigger the acquisition of one set of samples, and plot data.

• sc1 = tg.addscope('host',1) or sc1=addscope(tg,'host',1)
  sc1.triggermode = 'software'
  tg.start, or start(tg), or +tg
  sc1.start  or start(sc1) or +sc1
  sc1.trigger or trigger(sc1)
  plot(sc1.time, sc1.data)
  sc1.stop or stop(sc1) or -sc1
  tg.stop or stop(tg) or -tg1
  

Set all scopes to software trigger and trigger to start.

• allscopes = tg.getscopes
  allscopes.triggermode = 'software'
  allscopes.start or start(allscopes) or +allscopes
  allscopes.trigger or trigger(allscopes)
  

stop

I/O Block Reference