RING GENERATOR PSU The Ring Generator PSU is intended for use with the External Ring Generator assembly (90-5945-01), and 3600 system power trays (90-3669-xx). The Ring Generator PSU includes one ringing power supply unit (PSU) and grounding wire. There

RING GENERATOR PSU The Ring Generator PSU is intended for use with the External Ring Generator assembly (90-5945-01), and 3600 system power trays (90-3669-xx). The Ring Generator PSU includes one ringing power supply unit (PSU) and grounding wire. There are some switches on the product to select; DC bias, and operation frequency (16Hz, 20Hz, or 25Hz). The External Ring Generator configuration requirements: dual output, redundant operation = 4 Ring Generator PSU; single output, redundant operation = 2 Ring Generator PSU; dual output, non-redundant operation = 2 Ring Generator PSU.