Figure A-12. Hssi Signal Flow - Comtech EF Data SDM-2020 Installation And Operation Manual

SDM-2020 Satellite Demodulator
Terminal A "+" of the generator shall be positive with respect to terminal B "-" for a
binary 1 or ON state. The B "-" terminal of the generator shall be positive with respect to
the terminal A "+" terminal for a binary 0 or OFF state.
Rev.3

Figure A-12. HSSI Signal Flow

Data Interfaces
A–33