User`s guide

Upgrading from an Earlier Release
7-5
Upgrading from an Earlier Release
If you are upgrading from an earlier release to the Communications Blockset
2.0.1, then note these issues:
•The Binary Symmetric Channel block dialog box now omits the
Input vector
length
and Sample time parameters because the block now determines
these quantities automatically. However, if you open a model in Release 12.1
that contains the Release 12.0 Binary Symmetric Channel block, then the
Command Window might display warnings about block parameters. To
suppress these warnings in the future, simply save the model from Release
12.1.
•In the Communications Blockset 2.0.1, any model that includes a digital
passband modulator block or a digital passband demodulator block must use
a variable-step solver rather than a fixed-step solver. To configure a model so
that it uses a variable-step solver, select
Simulation parameters from the
model window’s
Simulation menu and then set the Type parameter on the
Solver panel to Variable-step.
See the Release Notes for Release 12 for upgrade issues involved in moving from
the Communications Toolbox 1.4 (Release 11) to the Communications Blockset
2.0.1.