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Euphonix MADI Converters Operation Manual
9
Chapter 2: AM713 and MA703 Converters
2.1 Features
Professional grade audio conversion is accomplished utilizing 128 times over-sam-
pled noise-shaped delta-sigma techniques. The analog to digital conversion em-
ploys a multi-bit modular architecture while the digital to analog conversion
employs a single-bit modulator architecture. Low-jitter reference clocks are provid-
ed utilizing digital PLL techniques with VCXO and VCO oscillators.
The analog inputs and outputs can be calibrated from the front panel of each unit. Four
segment LEDs on the front panel monitor signal level. LED meter segments indicate
-42, -18, -6 (green) and -0.005 dBFS (red).
AES/EBU and Word Clock external sync inputs on both units provide synchroniza-
tion to digital systems. Sample Rate Source and Sample Rate are automatically sensed
by both units. Supported sample rates include 44.1, 48, 88.2, and 96 kHz. In addition,
pull-up and pull-down rates for the standard sample rates, as well as custom sample
rates are available.
2.2 Applications
In addition to their standard use in a Euphonix digital system, the AM713 and MA703
can be used as stand-alone converters when 24, 48, or more channels of analog-to-
MADI and/or MADI-to-analog conversion is necessary (i.e., interfacing an analog tape
deck to a digital mixer). When used with the Euphonix SH612 Studio Hub, this is a
powerful conversion and MADI routing system that can be used to interface between
an analog console and an otherwise all-digital facility (i.e., TV broadcast facility).
NOTE: MADI cables can be extended to 50 m (164 ft), allowing remote location of the
converters.