The LMS-451D Lab Brick USB programmable signal generator is a low-cost, palm-sized, lab quality signal generator. This unit offers a 100 Hz frequency step size, configurable linear frequency sweeping and 0.5 dB power control steps. The signal generator is powered and controlled by USB connection to a PC or self-powered hub, and is programmable from the included graphical user interface (GUI) software, or by using the provided sdk.