Grass Valley 2020DAC D-To-A - Manual (Page 7)

2020DAC Instruction Manual 1
2020DAC 4-Channel Audio
Digital to Analog Converter
Introduction
The 2020DAC converts two AES stereo unbalanced or balanced digital
audio inputs to two balanced analog audio output pairs. Output modes can
be selected for channel swapping, channel summing, 1 kHz tone, or phase
inversion. When used in a 2000 frame supporting network control, the
2020DAC supports remote mode selection and module monitoring.
The digital-to-analog converters (DACs) on the module use 24-bit delta-
sigma with 128 times over-sampling and noise shaping. This offers supe-
rior performance with lower idle tones, excellent sonic performance and
resolution, and true 20-bit performance.
Key features of the 2020DAC include:
■ Inputs are jumper-selectable between unbalanced 75
Ω
terminated
AES-3id inputs or balanced 110
Ω
terminated inputs,
■ Two pairs of balanced analog outputs (four outputs),
■ Support for 32 kHz, 44.1 kHz, and 48 kHz sampling rates,
■ Output range selection from +14 dBu to +24 dBu with jumper selectable
maximum level,
■ Channel level control using on-board, multi-turn trim potentiometers,
■ Auto detection of emphasis and engagement of de-emphasis to flatten
frequency response,
■ Interfaces with the 8900/2000 family of audio and video modules,
■ Supports networked remote control and monitoring, and
■ Remote control lockout using an on-board jumper.