OXF-SP3000 SP RACKSP RACK OXF-SP3000
2. SP RACK OXF-SP3000
The SP RACK (Single Processing Rack) OXF-SP3000 ofPIF-13 board (DMBK-R3006)
the OXF-R3 (OXF-R3/24) system is the central circuitThe PIF-13 board is used to establish interface between the
block where digital signal processing is performed. TheSP rack and the I/O rack or tape recorders. The audio data
SP rack receives various audio input signals such as audiowhich are supplied from external source in the form of the
signal from the I/O rack and the audio signal from digitalMADI signal are decoded in the PIF-13 board and are sent
multi-track recorder through the MADI interface. Theto the PR-217 board that is a signal processing board. At
input signals receive the MIX processing in the SP rackthe same time, the audio output data supplied from the PR-
then are supplied to each channel as their output signals.217 board, are converted to the MADI signal and output to
The audio output signals from the SP rack are sent to I/Oexternal devices. The control signals which control the I/O
rack and to multi-track recorders through the MIDI inter-rack, and the status information of the I/O rack are inter-
face.faced between the MADI signal and the BF-53 board. The
The SP rack is controlled by the external host computerthree PIF-13 boards (6 systems of MADI) are installed in
which is connected to the PCI bus. The control signalsthe standard system of OXF-R3. Maximum of the four
from the host computer are input to the SP rack through thePIF-13 boards can be installed in an SP rack.
PCI bus cable. The control signals are distributed from the
SP rack to each signal processing LSI. The I/O rackPR-217 board (DMBK-R3005)
control signals are also output from the SP rack using theThe PR-217 board performs the audio signal processing.
MADI input/output of the SP rack.Most of the signal processing of the OXF-R3 is performed
by the PR-217 board.
The SP RACK OXF-SP3000 consists of the four types ofThe PR-217 board has the 25 high speed DSPs (SP IC)
circuit board.which are connected in the matrix connection of 5 x 5.
Maximum of the sixteen PR-217 boards can be installed in
MB-631 boardan SP rack. Be careful of the installation slots when
The MB-631 board is the mother board of the SP rack.increasing the numbers of the PR-217 board because the
The audio signals and the control signals are transferredPR-217 boards are connected in the matrix connection too.
inside the SP rack through the MB-631 board. The +3.3 V
and +5V power supply output is also supplied from theThe power supply unit of the SP rack uses the three power
power supply unit to the MB-631 board where the power issupply voltages of 3.3 V, 5 V and 12 V. The 5 V and 3.3
distributed to each signal processing board. The printedV power supplies are used in the signal processing systems
board of MB-631 has the 16-layer structure which makesand the control system. (Most devices are operating on 3.3
repair work of this board practically impossible since theV.) The 12 V power supply is used as the power supply of
connection points between the connectors and the boardthe cooling fan. The 12 V and 5 V power supplies can
are not visible from outside. If any trouble occurs on theoperate world wide as they are. However, be careful that
board, replace the mounted circuit board. the 3.3 V power supply needs selection of the AC power
supply voltage (100 V system or 200 V system) by chang-
BF-53 boarding connection of jumper wires.
The BF-53 board controls the control system of the SP
rack.
The BF-53 board has the CPU IF connector which estab-
lishes communication between the BF-53 board and the
host computer. The control signals coming from the host
computer are distributed from the BF-53 board to other
circuit boards. The signal processing status are always
reported from each board to the BF-53 board where the
processing status information is sent to the host computer
through the CPU IF connector. One SP rack can accept
only a BF-53 board.
4-64-6OXF-R3
OXF-R3/24 |
ACEC
