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1-3. Circuit Description
1-3-1. BI-371 Board
The BI-371 board contains a full-frame CMOS image sensor.
Power is supplied to this board from the DPR-394 board through the connector.
The CMOS image sensor converts an optical signal to an electrical signal, and its internal A/D converter converts the electrical signal
to a digital signal. Then this digital signal is converted to a differential serial signal, and then this serial signal is output to the
DPR-394 board.
1-3-2. DPR-394 Board
The DPR-394 board contains IC6300, IC1001, IC1001, IC2001, IC3001, IC3501, and IC6000.
Signals from the imager are input to IC6300.
IC1001 distributes image signals to IC2001 and IC6000.
IC2001 performs main-line signal processing.
IC6000 detects radio waves to control the lens.
IC3001encodes and decodes main-line signals from IC2001.
The encoded data is sent to IC6000 and the data from IC6000 is recorded in the media.
With respect to external output signals, monitor signals are sent from IC2001 to IC3501 and then to the SDI/HDMI/VIDEO OUT
driver. Then the monitor signals are output from each connector.
1-3-3. DIF-278 Board
The DIF-278 board contains an FPGA, an audio DSP, a PCIe switch, a USB HOST controller, an Ether PHY controller, and a
connector for interface with the extended interface box.
The FPGA (IC0700) relays video and audio data between IC2001 and IC6000 on the DPR-394 board, and also relays control signals
and audio data of the audio DSP (IC1000). This FPGA also distributes clock signals for the audio circuit.
The audio DSP (IC1000) switches audio signals for each channel, adjusts volume, and performs filter processing.
The PCIe switch (IC0300) distributes the PCIe communication bus from IC 6000 on the DPR-394 board to four channels (two XQD
card slots (EC-94 board), USB-HOST controller (IC1202), and Ether PHY controller (IC1101).
All REF clock signals of the PCIe communication bus in this unit are generated in and distributed from IC0604.
The interface connector (CN1401) on the extended interface box relays the following signals.
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RAW data signal from IC2001 on the DPR-394 board, communication signals, and synchronous clock signal
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Power voltages from the extended interface box and power control signals
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USB BUSx2 signal from the USB-HOST controller (IC1202)
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Ethernet communication bus from the Ether PHY controller (IC1101)
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Audio clock signal for WRR and return data
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FPGA update signal in the extended interface box
1-3-4. JK-108 Board
The JK-108 board contains a USB/multi-connector, a REMOTE connector, and a TC/GENLOCK IN/OUT select switch.
The USB and UART signals on the USB/multi-connector are connected to IC6000 on the DPR-394 board.
The LANC signal line on the REMOTE connector is connected to IC1002 on the DD-55 board and a power voltage is also supplied.
1-3-5. CR-53 Board
The CR-53 board contains a driver IC6501 to control the variable ND filter.
Control signals of the variable ND filter are connected from IC6000 on the DPR-394 board.
Signals from IC6501 are connected to the ND unit to insert or remove the variable liquid crystal ND of the ND unit and to change the
density of the variable liquid crystal ND.
1-3-6. TG-290 Board
The TG-290 board contains an ISO/GAIN switch (for switching gain) and a WHT BAL switch (for switching white balance
memory).
