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/* Defining Analog Inputs & Outputs */
== Defining Analog Inputs & Outputs ==
[[RF.Spice A/D]] allows both analog and digital stimuli for live simulations. For analog stimuli, you can use the voltage and current sources or the Function Generator or Power Supply in the [[Virtual Instruments]] panel. For a digital stimulus, you can use a digital input, a digital source or a digital clock. In a mixed-mode circuit, you may define both analog and digital stimuli. Note that when you place a voltage or current source in a circuit, Workshop automatically adds a corresponding Function Generator for you. The transient properties of a voltage source or a current can be set in the transient page of their property dialogs. This allows a variety waveforms including sinusoidal, triangular, squarewave, exponential, piecewise linear, etc.
The voltmeter, ammeter and markers all can be used to probe voltages and currents for analog simulations. You can also probe the circuit using the [[Virtual Instruments]] such as the oscilloscope, voltmeter, ammeter, wattmeter, etc. You can use a digital output or digital probe to observe the state of your digital circuit. Mixed-mode circuits may involve both analog and digital probes. Note that virtual voltmeters and ammeters are added to the virtual instrument panel automatically every time you place a voltmeter or ammeter in your schematic.
