Board; Cn-4058 Board; If-1371 Board - Sony HDCU3500 Service Manual

Front panel interface
The SY-467 board relays control lines for the CPU (AT-195 board) to control the switches and LEDs on the front panel
(FP-305 board). The value (F_INC_VR) of the potentiometer on the front panel is converted to digital data in the A/D
converter IC (IC1105) so that it can be read by the CPU.
GPIO control signals
Eleven GPIO control signals (including PREVIEW OUT and AUX3) are assigned from the D-sub connector through
the B to B connector (CN303). The FPGA IC (IC1200) controls the input/output direction of the GPIO control signals.
In the signal output mode, pin values are set. In the signal input mode, pin values are monitored.
Tally control signals
Three channels of tally control input signals are assigned to the six signal lines from the D-sub connector through the
B to B connector (CN303). Tally control input signals are input to the FPGA IC (IC1200) and can be read from the CPU.
GPIO0, GPIO1, and GPIO2 out of 11 GPIO signals are assigned as tally control output signals. Tally control output
signals are controlled by the FPGA IC (IC1200).
MIC Remote signal and WFM Remote signal
MIC Remote input or WFM Remote output signals are assigned to eight signal lines from the D-sub connector through
the B to B connector (CN303). The MIC Remote signal and the WFM Remote signal operate exclusively. When the
MIC Remote signal is assigned, signal values that are input to the FPGA IC (IC1200) can be read from the CPU. When
the WFM Remote signal is assigned, setting values can be controlled from the FPGA IC (IC1200).
6-1-18. VIF-75 Board
The VIF-75 board mainly performs HD/SD video processing and synchronization processing.
When FIBER TRANSMIT RATE is set to HIGH, this board sends and receives main-line video signals and return video
signals directly to/from the camera.
When FIBER TRANSMIT RATE is set to ULTRA, this board sends and receives HD signals through the TX-167 board.
HD main-line video signals
In addition to the timing adjustment function, the VIF-75 board has functions for PI (Progressive to interlace) conversion,
2-3 pull-down, down-conversion to SD data, superimposing audio data to output it as SDI data, conversion to VBS
signal to output it, and output to the IP transmission board.
Return video signals
The VIF-75 board performs timing adjustment, frame synchronization for asynchronous signals, PI conversion and IP
conversion, frame rate conversion, up-conversion (for SD-SDI or VBS data), and format conversion to a 1.5G HD signal
(FIBER TRANSMIT RATE = HIGH) or to a 3G HD signal (FIBER TRANSMIT RATE = ULTRA) to send the signal
to the camera.
At the same time, this board transmits the HD-Prompter, Network-Trunk, and HD-Trunk signals as well as sends,
receives, and processes superimposed signals such as audio signals.
6-1-19.

CN-4058 Board

The CN-4058 board mounted in the HKCU-REC55 contains a TIME CODE connector on the rear panel side.
6-1-20.

IF-1371 Board

The IF-1371 board mounted in the HKCU-REC55 contains a USB connector (for external storage devices) on the front
panel side.
HDCU3500/HDCU5500
6-5