SDBLK_c

Scicos Block
fr - eng

Delta-Sigma modulator block

$\epsfig{file=SDBLK_c.eps,height=90pt}$

This block can realize a first, second or third order $\Delta \Sigma$ modulator[1] with the following internal structure :

$\begin{figure}\centering \scalebox{0.7}{% \input{multi_mod_sig_delta2.pstex_t}} \end{figure}$

Figure 1: Diagram of a third order $\Delta \Sigma$ modulator

$\begin{figure}\begin{center} \epsfig{file=SDBLK_c_gui.eps,width=340pt} \end{center}\end{figure}$

Size of inputs
If set greater than 1, then perform modulation of an input vector of discrete variables. (sample-based model)
Properties : Type 'vec' of size 1.
Amplitude of input modulator
Maximal amplitude of the input(s) of modulator.
Properties : Type 'vec' of size 1.
Order of modulator(1,2 or 3)
Define the order of the modulator. Must be 1,2 or 3.
Properties : Type 'vec' of size 1.
Type of output(0:Regular/-1;1:Scaled)
Align (center if choice is set to 0) or not the binary output data stream.
Properties : Type 'vec' of size 1.
Enable Quantization error output?(0:No/1:Yes)
Allow a second regular output that gives the output quantization error of the modulator.
Properties : Type 'vec' of size 1.
Inherit (no:0, yes:1)
Herits events by its regular input ports (disable the event input port).
Properties : Type 'vec' of size 1.