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Model Details
The HDCU-700A Camera Control Unit interfaces with both the HDC-700A and HDC-750A HDVS Studio Cameras. The Optical Fiber interface provides a high quality audio/video interface as well as the necessary power to the camera head. Designed to support the transition from the current 525 transmission and SDTV to the true HDTV transmission. The HDCU-700 provides simultaneous 525 and 1125 outputs. Additionally,the video returns to the HDCU maybe either 525 or 1125 as a simplified up-convertered is supplied.
Multiple Video Inputs and Outputs
The HDCU-700A has four sets of HD SDI (High Definition Serial Digital Interface)
signal inputs and outputs, and four sets of digitally down converted SDI*
(Serial Digital Interface) inputs and outputs. Adding the HKCU-701A optional
NTSC encoder board provides the NTSC composite SDI, NTSC analog component
input/output. Further, addition of an optional HKCU-702 HD analog interface allows
HD analog signal input/output which is defined as SMPTE-240M.
*This model has not been adjusted to the PAL signal standard.
Dual Image Enhancers and Color Compensation Capability
Both the 1125 and 525 outputs each have their own independent image enhancers
and color compensation capability, to ensure optimal picture quality and picture
matching within the separate domains of coming high definition digital broadcasting
and conventional broadcast service (if this is required).
Optical Digital Transmission
The HDCU-700A can be connected to a camera using an optical fiber cable
(two single-mode optical fiber lines, two power lines, and two control lines) for the
transmission of digitized video, audio and control signals. By connecting together
250-meter (820 feet) optical fiber cables, an extremely high-quality all-digital
audio/visual signal can be transmitted up to a maximum of 3000 meters
(1.86 miles). The maximum length of the supplying power to the camera varies
with the camera system configuration and with the size of optical fiber cable.
Safety-oriented Power Supply
As safety is a major design concept for the HDC-700A series, a low voltage is
supplied at first, when the power of the HDCU-700A is turned on. Only after it has
been verified when an appropriate camera is attached, the normal power supply is
activated. The power is not supplied unless a camera is connected via an
optoelectric cable. Also, the HDCU-700A is equipped with an alarm indicator to
warn of open or short circuits in the cable.
Internal Down Converter
1125 signals can be converted to 525 component SDI signals using the built-in
superlative down converter, when the system is operating at a 59.94 Hz field
frequency. The output signal aspect ratio may be set to 4:3 or 16:9 (squeeze,
edge clop or letterbox can be selected). The down converter has image
enhancement, gamma control and color correction features to facilitate picture
matching to existing NTSC cameras which can be externally controlled.
Internal Up Converter
A built-in up converter allows monitoring of 525 return video signal from HD
viewfinder of camera head for camera operator’s convenience. The aspect ratio of
the return video signal can be set to 4:3 or 16:9 (squeeze, edge clop or letterbox
can be selected).
External Reference Signals
The HDCU-700A can be locked to an external reference signal. Either 1125 tri-level
sync signal (according to SMPTE 240M), a 525 sync or black burst signal can be
used as the reference signal.
Wide Range of Audio Functions
The HDCU-700A has connectors for two-channel microphone outputs, a digital audio
output, and a program audio input. Further, the HDCU-700A can use an intercom
system with two independent channels, and supports two-wire, four-wire and
CLEAR-COM® intercom systems.
