Decimator#

The Decimator block provides reduction of input signal sampling frequency. This is done by supplying each Nth value of the input signal to the output, where N is the decimation factor of the filter, N ≥ 1

The block allows you to specify three different types of discretization, i.e. the time interval between the recorded values of the input signal:

Fundamental project frequency decimation - the output signal has a sampling rate N times less than the sampling rate of the project (the inverse of the integration step). Here, N is a given design fundamental sampling rate decimation factor, N ≥ 1.

Sample time is the interval between time points at which the input signal values are sampled. The value of the specified sampling period shall be a multiple of the integration step specified in the project.

Sampling frequency - sampling rate of input signal values. The value of the specified sampling frequency shall be a divider of the sampling frequency specified in the design (the value opposite to the integration step).

1. Properties#

Property	Default Value	Description	Units of measurement
Filter decimation factor	2	-	-
Sampling type: Fundamental project frequency decimation; Sample time; Sampling frequency	Fundamental project frequency decimation	-	-
Decimation factor of project fundamental discretization frequency, available when selecting `Sampling type` - `Fundamental project frequency decimation`	2	-	-
Sample time, available when selecting `Sampling type` - `Sample time`	0.05	-	s
Sampling frequency, available when selecting `Sampling type` - `Sampling frequency`	5.0	-	Hz

2. Inputs and outputs#

Parameters	Input/Output	Description	Units of measurement	Port type
Original signal	Input	-	-	Automation
Output signal	Output	-	-	Automation

In order to see the connection capabilities of the block, you need to go to page Description of block ports