input bit stream specifies the sequence of information bits to be modulated.

Note   For QAM systems with more than 1 bit per symbol, such as 4-QAM, the symbols are converted to bits in least significant bit (LSB) first order. For example, if the detected symbols are 2,1,... the generated bits are 0,1,1,0...

QAM system parameters specifies parameter values defining the QAM system. Wire the QAM system parameters cluster returned by the QAM (M) or QAM (Map) instance of the MT Generate System Parameters VI to this cluster. Do not alter the values.

	samples per symbol specifies an even, positive number of samples dedicated to each symbol. Multiply this value by the symbol rate to determine the sample rate. The default is 16. Note  The Modulation Toolkit demodulation and detector VIs use timing recovery, which is optimized for four or more samples per symbol.
	symbol map specifies an ordered array that maps each symbol value to its desired coordinates in the complex plane. The number of QAM states in the array must be 2N, where N is the number of bits per symbol. The length of the vector for the symbol(s) farthest from the origin must be 1.

symbol rate specifies the desired symbol rate, in hertz. The default is 1.0.

pulse shaping filter coefficients specifies an ordered array containing the desired pulse-shaping coefficients. Wire the pulse shaping filter coefficients parameter of the MT Generate Filter Coefficients VI to this parameter. When generating the filter coefficients, ensure that the value of the pulse shaping samples per symbol parameter of the MT Generate Filter Coefficients VI is equal to the value of the samples per symbol element of the QAM system parameters cluster, which is passed to this VI.

Note   When reset? is set to TRUE, there is a transient response of half the filter length at the start of the modulated signal, and the returned output data is shortened by approximately half the filter length. When reset? is set to FALSE, the VI uses data from the previous iteration to eliminate the transient.

reset? specifies whether the VI continues modulating using the previous iteration states. The VI resets on the first call and when reset? is set to TRUE. reset? must be set to TRUE the first time this VI is called and whenever you want to restart the modulator. The default is TRUE.

flush buffers? forces out samples from the modulated waveform that are affected by the FIR pulse-shaping filter delay. Set this parameter to TRUE during single-shot operations and during the last iteration of continuous operations. The default is FALSE.

Note  Setting flush buffers? to TRUE destroys the internal states of the algorithms such that you cannot perform continuous processing on the signal during subsequent iterations. If flush buffers? is set to TRUE, you must set reset? to TRUE on the subsequent iteration.

error in (no error) can accept 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.

	status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred. 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.
	code identifies the error or warning code. 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.
	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.

output complex waveform returns the QAM-modulated complex baseband waveform data.

	t0 returns the time of first value in Y array.
	dt returns the time between values in the Y array.
	Y returns 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.

symbols out returns the array of mapped symbols before pulse shaping is applied. The array represents the complex value of each mapped symbol.

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.

	status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred. 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.
	code is the error or warning code. 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.
	source describes the origin of the error or warning. 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.