M-AUDIO Delta RBUS - Manual (Page 13)

connector is a wordclock output which may be used to synchronize other
digital devices to the Delta R-BUS board. Wordclock is a sampling clock
signal which automatically operates at the present Delta R-BUS sample
rate, whether that sample rate is derived from the Delta R-BUS’s internal
clock, S/PDIF input, or R-BUS internal or external input.
Analog jacks on the Delta R-BUS breakout cable, two for input and two
for output, are RCA phono type female jacks. Although the RCA jacks
typically allow connection to unbalanced (typically consumer) line level
connections, +4dBu level unbalanced equipment may be connected to the
Delta R-BUS’s RCA jacks. However, sometimes +4dB signals may be too
hot for these analog inputs. Consult the user guide for your particular
device. On the analog outputs, the Delta Control Panel software provides
line level switches between -10dB and -4dB (labeled “Consumer”). These
software switches allow you to adjust your stereo output signal to the line
level of the receiving device.
NOTE: In order to preserve its high dynamic range and
minimize distortion, the Delta R-BUS does not have
microphone pre-amplifiers built into it. Therefore direct
connection to a microphone is not recommended. Instead
run the microphone signal through a microphone pre-amp
(such as the M Audio"DMP3™") and then connect the pre-
amp output to the input of the Delta R-BUS.
The Digital Monitor Mixer
The Delta R-BUS PCI Audio Card has a hardware digital audio mixer
built into its PCI controller chip. It accepts digital audio streams from all
hardware inputs and all outgoing software audio devices, mixes them
with 36-bit internal precision and then provides the mixed output to one
or more locations. For the purpose of monitoring, the output of the mixer
may be routed to the pair of Delta R-BUS analog outputs and the S/PDIF
digital output simultaneously (SP/ANA stereo pair). The output of the
mixer may also be routed to the Delta R-BUS Audio Card’s R-BUS OUT1
and OUT2. At the same time the mixer may be used for stereo mix-down,
with the mixer’s output recorded into the user’s application software.
The digital audio mixer is configured and controlled by the included
Delta Control Panel Software.
The Patchbay / Router
In addition to the built-in monitor mixer, the Delta R-BUS PCI Audio Card
includes an output patchbay/router. The patchbay/router allows each
output (analog or digital) to be connected to a variety of input sources. The
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