Operating instructions

17
AES/EBU Digital Input B
This female XLR jack receives the right channel of incoming 24 bit 176.4 or 192kHz AES/EBU
digital audio signals at 88.2 or 96kHz when in dual wire mode. In single wire mode, this input is
ignored. Pin 2 is hot.
AES/EBU Digital Output B
In dual wire mode, this male XLR plug transmits one channel of 24 bit 176.4 or 192kHz AES/EBU
digital audio signals at 88.2 and 96kHz. In single wire mode, this output duplicates the signal on
AES/EBU Digital Output A (but is electrically independent). Pin 2 is hot.
S/PDIF Digital I/O
S/PDIF Digital Input
This phono (RCA) connector accepts incoming 24-bit S/PDIF digital audio signals up to 192kHz
from compatible hardware. The copy-protection, pre-emphasis, and consumer/professional bits are
ignored.
This input can be used for either digital audio with clock or for digital clock only. When the Clock
knob (page 23) is set to AES/SPDIF and the Digital Outputs knob (page 27) is NOT set to
AES/SPDIF, the audio portion of the signal is ignored.
S/PDIF Digital Output
This phono (RCA) connector transmits 24-bit S/PDIF digital audio signals up to 192kHz to
compatible hardware. The copy protection bit and pre-emphasis bits are cleared, and the
professional bit is set.
Word Clock I/O
Two separate word clock inputs and four parallel word clock outputs are provided for
synchronizing with external hardware. Connections are via standard 75-ohm BNC connectors. All
input and output signal levels are TTL and CMOS compatible.
Word Clock Outputs 1-4
These outputs transmit independent high-quality word clock at the frequency specified by the
Sample Rate Select (page 25). Four outputs are provided so you can use the 2192 as the master
clock source for multiple devices simultaneously without cascading the clock through external
devices, which can degrade the clock signal.
The word clock signal on each of the four outputs is identical, electrically independent, and phase
aligned to the clock source to allow cascading multiple units without sample skew.
Word Clock Inputs
The Word Clock Inputs receive a standard digital word clock signal for synchronization (slaving) to
external hardware devices. To sync to an external word clock, set the 2192 Clock knob (page 23)
to Word 1 or Word 2.
The 2192 supports subclock (1/2x or 1/4x) and overclock (2x and 4x) synchronization to allow
converting signals at multiples or submultiples of the sample rate. For example, a 48kHz house sync
can be used while converting at 96kHz or 192kHz.