* Modulation Blocks
In addition, all the transmission line calculator and transmission line designer utilities under the Device Manager's '''Tools Menu''' are greyed out, and so are the RF device and model import and creation items in the Device Manager's '''File Menu'''. Needless to say, the parts database of the [[B2.Spice A/D]] edition is a reduced subset of the parts database of [[RF.Spice A/D]].
== The Stages of a Circuit/System Simulation ==