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8. Operation and Usage
8.1 External Connections
Project Hammerfall consists of the main PCI board and an Expansion Board. All the
essential electronics are located on the PCI card, so it will also work without the Expansion
Board.
The
main
board's
bracket has two ADAT
optical inputs and two
ADAT optical outputs,
as well as a 9-pin D-type
socket. Coaxial S/PDIF
input
and
output
requires plugging in the
adapter cable, whereby
the red phono socket is
the output. The ADAT1
I/O next to the D-type socket can also be used for optical SPDIF, if this mode is selected in the
Settings dialog.
An input is selected via the Settings dialog (started by clicking on the hammer symbol in the
system tray). Hammerfall accepts the commonly used digital audio formats, SPDIF as well as
AES/EBU. Channel status and copy protection are ignored.
In SPDIF mode, identical signals are available at both the optical and the coaxial outputs. An
obvious use for this would be simply connecting two devices, i.e. using the DIGI9652 as a
splitter.
To receive signals in AES/EBU format,
an adapter cable is required. Pins 2 and 3
of a female XLR plug are connected
individually to the two pins of a phono
plug.
The
cable
shielding
is
only
connected to pin 1 of the XLR - not to the
phono plug.
The ground-free design using transformers for digital inputs and outputs enables trouble-free
connection to all devices, and perfect hum rejection.
The Expansion Board's
bracket gives access to
a third ADAT optical
input and output as well
as word clock I/O. Next
to the two BNC sockets
is
an
LED,
which
displays the word clock
input lock status.
User's Guide DIGI9652 © RME
7
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