Specifications

Prism Media Products Limited AD-2 Dual-rate A/D converter
Operation Manual
Issue 0.2 © Prism Media Products Limited
11 August 1998 Page 4 of 58
1. INTRODUCTION
To get started immediately, please turn to page 6.
The AD-2 Dual-rate A/D converter is intended for professional audio use in
applications where a very high level of performance is required. The high performance
of the AD-2 was a key design objective and care should be taken when making
comparisons to check that consistent measurement units and methods are employed.
In this manual, all specifications and measurement results are obtained using the
methods of AES17 unless otherwise stated.
The AD-2 can perform a number of tasks:
" analogue to digital conversion, available on two separate outputs which may
operate at different sampling rates and wordlengths and on a variety of output
formats
" digital sampling rate conversion such as from 96kHz to 44.1kHz
" digital format conversion
- between various I/O formats such as AES3/SDIF-2 et. al.
- between “one-wire” and “two-wire” formats for high sampling rates
" digital processing such as wordlength reduction & noise shaping
(e.g. for 16-bit CD)
" synchronization of disparate formats such as locking a 96kHz audio recording
chain to a 48kHz or 44.1kHz wordclock
1.1. Notational conventions
In this manual the following notational conventions are used for clarity:
Push-buttons in the Edit and Menu boxes are referred to as ‘keys’. Push-buttons in the
Configuration/Stores box are referred to as ‘buttons’.
When a Menu Controls key is referred to by name, the name is enclosed in square
brackets thus : [Enter].
When a Store Controls button is referred to by name, the name is enclosed in angle
brackets thus: <A-D Modes>.
When text is quoted from the 2x16 character LCD display the text will be printed in a
special font thus : Level: dBFS.
When an LED from the System State Indicators is referred to by name, the name will be
enclosed in double quotes thus : “24bit”.