Data Sheet KAD/VDC/001 Data Sheet Download Resource The file you are trying to access requires you to be logged in as a registered user. Registration is free, sign up today. Username Enter your Curtiss-Wright Defense Solutions username. Password Enter the password that accompanies your username. Forgot password? Don’t have an account? Register here. KAD/VDC/001 Differential ended voice-to-digital converter (CVSD) - 2ch at 64kbps