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 44 of 58
7.4.3. Optical input:
This input is physically compatible with the Toshiba ‘TOSLINK' fibre-optic connector,
and data encoded according to professional (AES3-1992) or consumer (IEC958)
formats is correctly decoded.
7.4.4. Coaxial (RCA) consumer input:
Input impedance: 75S.
This input conforms to the coaxial specification of IEC958 and, for improved isolation,
has transformer isolation with the screen capacitively coupled to the chassis. Data
encoded according to professional (AES3-1992) or consumer (IEC958) formats is
correctly decoded.
7.4.5. Multi-function coaxial (BNC) professional inputs:
Input impedance: 75S.
The connectors can be configured to operate as coaxial AES3 (AES-3id), SDIF-2, or
DSD* inputs.
* DSD operation is subject of an upgrade option.
7.4.5.1. BNC inputs operating as AES-3id or IEC958 format inputs.
These conform to the AES-3id recommendation [Ref. 7]. However data encoded
according to professional (AES3-1992) or consumer (IEC958) formats is correctly
decoded.
The BNC inputs can be configured to accept 'Split96' format inputs for 88.2kHz and
96kHz signals with one channel per bearer in accordance with [Ref.8]. The BNC input
selection indicators are both illuminated if the inputs are being handled in this way.
7.4.5.2. BNC inputs operating as SDIF-2 (Sony) format inputs
In this mode the inputs conform with the interfaces initially used by the Sony
PCM-1610/1630 PCM encoder. The signal on BNC1 is the left channel and that on
BNC2 is the right channel.
The BNC input selection indicators are both illuminated if the inputs are being handled
in this way.
Note: Signals in this format are D.C. coupled at TTL levels and transmitted most significant bit (MSB) first in
non-return to zero (NRZ) format. A synchronization pattern identifies the start of a new sample word. Some