Grass Valley 8920DAC - Manual (Page 7)

8920DAC Instruction Manual 1
8920DAC AES/EBU to Analog
Audio Converter
Introduction
The 8920DAC converts digital audio to analog audio and provides true 20-
bit performance. Its various modes can modify the outgoing signal to
provide channel swapping, channel summing, tones, and phase inversion.
When used in an 8900 frame supporting network control, the 8920DAC
supports remote mode selection. The module uses 24-bit delta-sigma
digital-to-analog converters (DACs) with 128 times over-sampling and
noise shaping which offer superior performance with lower idle tones, and
excellent sonic performance and resolution.
8920DAC features include:
■ Support for 32 kHz, 44.1 kHz, and 48 kHz sampling rates
■ Jumper selectable 20-bit or 24-bit DAC mode
■ One 75 Ω loop-through AES-3id/EBU input
■ One pair of balanced analog outputs available on terminal block
outputs using BNC adapter board
■ Input sampling frequency, emphasis, and error LED indicators
■ Output range selection from +14 dBu to +24 dBu with jumper selectable
maximum level
■ Channel level control using an on-board, multi-turn trim potentiometer
■ Auto detection of emphasis and engagement of de-emphasis to flatten
frequency response
■ Module is part of the 8900 family of audio and video modules
■ Supports remote control in 8900 networking frames
■ Offers remote control lockout using an on-board jumper