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MT Format Eye Diagram (complex) (G Dataflow)

Last Modified: January 9, 2017

Specifies a complex-valued waveform, divides it into segments, and displays those segments as plots on a waveform graph. This node determines the segment length based on the symbol rate and eye length parameters.

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Tip  

For a "clean" eye diagram with distinct, non-shifting transitions, the input waveform must have an integer-valued symbol-rate-to-sample-rate ratio.

This node displays either the I or Q component of the input signal, depending on the selection you make on the I/Q parameter in MT Format Eye Diagram (complex).

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waveform

Recovered modulated data for plotting as an eye diagram.

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t0

Trigger (start) time of the Y array.

Default: 0

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dt

Time interval between data points in the Y array.

Default: 1.0

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Y

The complex-valued signal-only baseband modulated waveform. The real and imaginary parts of this complex data array correspond to the in-phase (I) and quadrature-phase (Q) data, respectively.

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symbol rate

The desired symbol rate, in hertz (Hz).

Default: 1.0

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eye length

Number of symbol periods on the horizontal scale of the eye diagram.

Default: 1

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I/Q

A value that indicates whether to generate I data or Q data to the eye diagram.

Name Description
I

Generates in-phase (I) data.

Q

Generates quadrature-phase (Q) data.

Default: I

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error in

Error conditions that occur before this node runs. The node responds to this input according to standard error behavior.

Default: no error

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eye diagram

An array of waveform segments for eye diagram display. Each segment has a time length of (eye length × symbol period) seconds. Wire this parameter directly to a waveform graph.

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t0

Trigger (start) time of the Y array.

Default: 0

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dt

Time interval between data values in the Y array.

Default: 1.0

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Y

The complex-valued signal-only baseband modulated waveform. The real and imaginary parts of this complex data array correspond to the in-phase (I) and quadrature-phase (Q) data, respectively.

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error out

Error information. The node produces this output according to standard error behavior.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported


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