The ES-219AP is a Black-Burst/Sync Generator with four isolated outputs and a 19" rackmount front panel. The unit provides a dependable and stable composite black-burst signal for pre-blacking tapes and/or for general synchronization purposes. The output signal of the ES-219AP consists of sync, blanking, reference black setup level and color burst which is SCH phased. Subcarrier frequency and SCH phase may be adjusted if desired.