CyberResearch multifunction UCDAS 04M1 and 02M2 USB data-acquisition modules are suitable for transient analysis and other high-frequency applications, including simultaneous sampling in phase-sensitive applications, sensitive model analysis and high throughput requirements, and synchronized stimulus/response measurements. The compact, rugged modules offer MHz sampling rates and a 2-ns skew. Both UCDAS analog-input modules feature 32 DIO lines and two 32-bit counters running at speeds up to 20 MHz. UCDAS 04M1 models have four differential analog inputs that run at speeds up to 1.3 MHz, and the UCDAS 02M2 models have two differential analog inputs running at speeds up to 2 MHz. UCDAS 04M1DA and 02M2DA models add two analog outputs.