Signal / Tone Generator
The SG-1 is a plug-in circuit card directly interchangeable with Dolby Laboratories' Cat. No. 85 series. From the initial digitally generated white noise, pink noise is produced by a 7-pole filter; red noise is produced with a single pole filter. The adjustable output level meets Dolby's level criteria, and we've included the level-switching circuit necessary for use in the CP-200.