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 35 of 58
6. CONNECTORS
6.1. Analogue input connectors
Conventional connections from a balanced analogue source should use a screened
twisted pair lead. The AD-2 input pins 2 (+) and 3 (-) should be wired to the two
conductors of the pair and pin 1 to the cable screen. The other end of the cable should
be connected in a similar manner with the screen connecting to the chassis of the
source.
The AD-2 should be connected to an unbalanced analogue source using a screened
twisted pair lead, connected to the AD-2 as described above but at the analogue
source, pins 3 and 1 of the cable should both be connected to the output shield
connection. This provides shield continuity without the possibility of ground currents
flowing down the signal conductors.
6.2. Digital input connectors
The AD-2 Dual-rate A/D converter can accept digital audio inputs in a variety of
formats. These are:
AES3 professional AES/EBU on an XLR connector;
AES3 'Split96' professional AES/EBU on two XLR connectors, one per
channel at 88.2kHz or 96kHz sample rates;
AES-3id professional AES/EBU on a BNC connector;
AES-3id 'Split96' professional AES/EBU on two BNC connectors, one per
channel at 88.2kHz or 96kHz sample rates;
IEC958 consumer on an RCA/phono connector;
Optical consumer on a TOSLINK connector;
SDIF-2 professional on two BNC connectors plus wordclock;
DSD* one-bit data stream on two BNC connectors plus clock,
subject to an upgrade option
Two female XLR digital input connectors are fitted, which are used for either AES3 or
Split96 operation.
Three BNC digital input connectors are fitted, two of which are used for either AES-3id,
Split96, SDIF-2 or (with upgrade option) DSD operation. The third BNC is a wordclock
input for use with SDIF-2 inputs, or simply as a reference sync in A-D mode. The
wordclock connector doubles as a DSD clock input in that mode.
IEC958 (phono) and optical input connectors are dedicated, single function.