Ross 9516DR-004-03, User Manual, Page: 9 / 26

DAC-9516 User Guide (v3.0) Before You Begin • 9
Before You Begin
If you have questions pertaining to the operation of DAC-9516, contact us at the numbers listed in the section
“Contacting Technical Support ” on page 7. Our technical staff is always available for consultation, training, or
service.
Overview
The DAC-9516 is AES/EBU to Analog Audio Converter is a a broadcast quality modular product used to convert
20bit or 24bit AES-3id (coaxial) signals to balanced analog audio. The DAC-9516 accepts one AES audio signal at
32, 44.1, or 48kHz sample rates, and provides two copies of stereo (A, B) balanced analog audio.
The DAC-9516 provides reclocking of the AES stream as well as a state of the art 128X over-sampled Delta Sigma
Modulator DAC to convert to analog audio. Following the D-A conversion, the analog audio passes through a very
high quality reconstruction filter, which assures low distortion and noise. Two identical copies of the signal are
output through a 12-pin screw-type audio terminal block connector. The DAC-9516 provides automatic input cable
equalization for lengths up to and beyond 610m (2000ft).
The front panel of the DAC-9516 chassis provides the operational controls. Coarse level adjustment headroom
switches (18dB or 24dB), and a fine gain adjustment potentiometer (+/-6dB) for each channel, are provided to
enable precise matching to your facility's house reference audio level. The DAC-9516 can accommodate any
full-scale digital (FSD) level in the -12 to -30dBFS range. Automatic detection of AES/EBU 50/15 s de-emphasis is
available for all data rates. In addition, user-selectable settings are available for Emphasis controls. Status indicator
LEDs provide visual references for the input signal and power supplied to the module.
The DAC-9516 includes a universal power adapter and line cord suitable for the country of use. Various mounting
options are included that enable a wide range of installation choices. The DAC-9516 provides a flexible high
quality AES/EBU conversion solution in a compact, stand-alone package. Designed and manufactured to meet the
highest quality broadcast industry standards, the DAC-9516 is an ideal, cost effective solution for AES/EBU to
analog audio conversion.
Block Diagram
Figure 2.1 Simplified Block Diagram of DAC-9516 Functions
AES IN
EQUALIZE
&
RECLOCK
24BIT DAC
INTERPOLATE
&
OVERSAMPLE
FILTER
ANLG AUDIO
OUT (A1, A2)
ANLG AUDIO
OUT (B1, B2)