XR-2121 modulator equivalent, bell 212a type modulator.
The, XR-2121 is designed to provide the complete modulator function for a Bell 212A type modem. The circuit accepts a synchronous serial data stream and generates either a 300 BPS frequency shift keyed (FSK) or a 1200 BPS differential phase shift ke.
Image gallery
TAGS
Download (Size : 370.97KB)