# :SOURce Subsystem

:SOURce Commands

- :SOURce Subsystem
- :SOURce Simulated Commands

Use the `:SOURce` subsystem to configure source waveforms from the following instruments:

- Simulated instruments. Simulated instruments are very useful during program development as you don't need to use expensive hardware.

To install a simulated instrument, use the commands in the `:INSTrument Subsystem` subsystem.

Always perform an Autoscale after configuring the source waveform.