MT Modulate PM VI

LabView Analog Modulation

previous page next page

MT Modulate PM VI

Performs phase modulation (PM) on an RF carrier wave according to the baseband information signal specified by the message signal parameter. This VI returns the complex envelope of the phase-modulated signal in the PM modulated waveform indicator. This VI performs signal processing on data and operates independently of hardware settings. This VI can be used in simulated as well as hardware-equipped applications.

Details

MT Modulate PM

message signal specifies the message signal used to modulate the carrier wave.

	t0 specifies the trigger (start) time of the signal data.
	dt specifies the time interval between data points in the signal data.
	Y specifies the normalized message signal array.

phase deviation specifies the maximum desired phase deviation, in degrees, of the phase-modulated signal returned in the PM modulated waveform parameter. The default is 1°.

error in (no error) accepts error information wired from previously called VIs. Use this information to decide if any functionality should be bypassed in the event of errors from other VIs. Right-click the front panel error in control and select Explain Error or Explain Warning from the shortcut menu for more information about the error displayed.

	status is either TRUE (X) for an error, or FALSE (checkmark) for no error or a warning. Right-click the front panel error in control and select Explain Error or Explain Warning from the shortcut menu for more information about the error displayed.
	code identifies the error or warning. Right-click the front panel error in control and select Explain Error or Explain Warning from the shortcut menu for more information about the error displayed.
	source describes the origin of the error or warning. Right-click the front panel error in control and select Explain Error or Explain Warning from the shortcut menu for more information about the error displayed.

PM modulated waveform returns the baseband signal data and the complex envelope of the phase-modulated signal.

	t0 returns the trigger (start) time of the signal data.
	dt returns the time interval between data points in the signal data.
	Y returns the complex-valued time-domain data array. The real and imaginary parts of this complex data array correspond to the in-phase (I) and quadrature-phase (Q) data, respectively.

error out passes error or warning information out of a VI to be used by other VIs. Right-click the front panel error out indicator and select Explain Error or Explain Warning from the shortcut menu for more information about the error displayed.

	status is either TRUE (X) for an error, or FALSE (checkmark) for no error or a warning. Right-click the front panel error in control and select Explain Error or Explain Warning from the shortcut menu for more information about the error displayed.
	code identifies the error or warning. Right-click the front panel error in control and select Explain Error or Explain Warning from the shortcut menu for more information about the error displayed.
	source describes the origin of the error or warning. Right-click the front panel error in control and select Explain Error or Explain Warning from the shortcut menu for more information about the error displayed.

Details

This VI performs signal processing on data and operates independently of your hardware settings. This VI can be used in simulated as well as hardware-equipped applications.

The output phase-modulated wave is described by the equation:

This VI sets carrierPhase in the preceding equation to zero. To adjust the carrier phase, use the initial phase parameter of the MT Upconvert Baseband VI.

previous page start next page