Programmable DDS Signal Generator Counter,Koolertron Upgraded 80MHz 3.5inch Screen High Precision Dual-Channel Arbitray Waveform Function Generator Frequency Meter 300MSa/s: Amazon.com: Industrial & Scientific
Function Generator - CircuitLab
Function Generator (Sine, Triangular, Chainsaw, 32 kHz Max) - Hackster.io
14 Best Free Signal Generator Software For Windows
Tracking performance, 200-m sine wave at 200 Hz. Sliding surface... | Download Scientific Diagram