Digital/Analog Telecommunications NI ELVIS Communications Device—The Emona DATEx Telecommunications Board for NI ELVIS II is an add-on application board for the NI Engineering Laboratory Virtual Instrumentation Suite II (NI ELVIS II) or NI ELVIS II+. Developed for education, this device can help you teach introductory digital and analog communications topics in electrical and computer engineering curricula. Using the Emona DATEx Telecommunications Board for NI ELVIS II, you can offer students the opportunity to build and measure communications systems that correspond to communications system block diagrams commonly found in textbooks.