meas_value :
A primitive for measuring the values of an xreal-typed signal at triggering events.

The meas_value primitive measures the value of an xreal-typed signal in at the specified triggering events. The real-typed output out indicates the sampled value of the signal at the triggering events. The output out initially takes an ‘NaN (not-a-number)’ value until the first triggering event occurs, and gets updated to a finite value once a triggering event occurs.

The measurement can be triggered either internally or externally depending on the value of the parameter period. When period is greater than 0, the measurement is triggered internally at a period of period after an initial delay of delay. When period is 0, the change is triggered externally whenever the trig input changes to a different value.

Input/Output Terminals

Name	I/O	Type	Description
out	output	real	value
in	input	xreal	input signal
trig	input	xbit	trigger

Parameters

Name	Type	Default	Unit	Description
period	real	0.0	seconds	trigger period
delay	real	0.0	seconds	initial delay