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8. Operation and Usage
8.1 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 S/PDIF, if this mode is
selected in the Settings dialog.
An input is selected via the RME DIGI Settings dialog. Project Hammerfall accepts the
commonly used digital audio formats, S/PDIF as well as AES/EBU. Channel status and copy
protection are ignored.
In S/PDIF 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, a cable adapter 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 internal digital input (connector ST3 on the circuit board, CD IN) can be connected to the
digital output of an internal CD-ROM drive (advantage: direct transfer of data within the
computer). It also allows to use an AEBx-I, when a 3-wire cable connects ST7 on AEB and
Hammerfall.
Additionally the card offers two internal outputs, labeled ADAT1OUT (ST5) und ADAT2OUT
(ST9). These can be used to operate one AEBx-O each, for a maximum of 16 analog outputs.
The audio data are the same as on the corresponding optical output.
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.
DIGI9652 User's Guide © RME
7
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