Getting Started

Setting Parameters in the Expanded Model

Make the following changes to the parameters for the blocks you added to the model.

Error Rate Calculation Block

Double-click the Error Rate Calculation block and clear the box next to Stop simulation in the block's mask.

Scope Block

The Scope block displays the channel errors and uncorrected errors. To configure the block:

1. Double-click the block to open the scope.
2. Click the Parameters button on the toolbar.
3. Set Number of axes to 2.
4. Set Time range to 5000.
5. Click the Data history tab.
6. Type 30000 in the Limit data points to last field.
7. Click OK.

The scope should now appear as shown.

To configure the axes, follow these steps:

1. Right-click the vertical axis at the left side of the upper scope.
2. In the context menu, select Axes properties.
3. In the Y-min field type -1.
4. In the Y-max field type 2.
5. Click OK.
6. Repeat the same steps for the vertical axis of the lower scope.
7. Widen the scope window until it is roughly three times as wide as it is high. You can do this by clicking the right border of the window and dragging the border to the right, while pressing the mouse button.

Relational Operator

Set Relational Operator to ~= in the block's mask. The Relational Operator block compares the transmitted signal, coming from the Bernoulli Random Generator block, with the received signal, coming from the Hamming Decoder block. The block outputs a 0 when the two signals agree and a 1 when they disagree.

Adding a Scope to the Model

Observing Channel Errors with the Scope