Simulink Reference

Probe

Output a signal's attributes, including width, dimensionality, sample time, and/or complex signal flag

Library

Signal Attributes

Description

The Probe block outputs selected information about the signal on its input. The block can output the input signal's width, dimensionality, sample time, and/or a flag indicating whether the input is a complex-valued signal. The block has one input port. The number of output ports depends on the information that you select for probing, that is, signal dimensionality, sample time, and/or complex signal flag. Each probed value is output as a separate signal on a separate output port. The block accepts real or complex-valued signals of any built-in data type. It outputs signals of type double. During simulation, the block's icon displays the probed data.

Data Type Support

The Probe block accepts and outputs any data type supported by Simulink, including fixed-point data types.

For a discussion on the data types supported by Simulink, refer to Data Types Supported by Simulink in the Using Simulink documentation.

Parameters and Dialog Box

The Main pane of the Probe block dialog appears as follows:

Probe width

Select to output the width, or number of elements, of the probed signal.

Probe sample time

Select to output the sample time of the probed signal. The output is a 2x1 vector that specifies the period and offset of the sample time, respectively. See Specifying Sample Time for more information.

Probe complex signal

Select to output 1 if the probed signal is complex; otherwise, 0.

Probe signal dimensions

Select to output the dimensions of the probed signal.

Detect framed signal

Select to output 1 if the probed signal is framed; otherwise, 0.

The Signal data types pane of the Probe block dialog appears as follows:

Note    The Probe block ignores the Data Type Override setting of the Fixed-Point Settings interface.

Data type for width

Select the output data type for the width information.

Data type for sample time

Select the output data type for the sample time information.

Data type for signal complexity

Select the output data type for the complexity information.

Data type for signal dimensions

Select the output data type for the dimensions information.

Data type for signal frames

Select the output data type for the frames information.

Characteristics

Direct Feedthrough	Yes
Sample Time	Inherited from driving block
Scalar Expansion	Yes
Dimensionalized	Yes
Zero Crossing	No

Product of Elements

Pulse Generator

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