JVC ProHD GY-HD251 Specifications page 5

GY-HD251
Professional ProHD camcorder with super-smooth 720p/50
imaging for ENG plus an optional 26-pin
adapter for studio use.
With 720p/50 capture and recording capabilities,
the GY-HD251 delivers full-resolution HD images,
ensuring the high resolution and smooth motion so
critical to ENG and sports productions.
Equally at home in the studio,
the GY-HD251 is easily converted for
studio use by means of the optional studio
adapter KA-HD250, which incorporates an
industry-standard 26-pin multi-core
connection. Other valuable features of
this versatile camcorder include genlock,
component and HD SDI output, wide
selection of optional HD lenses, enhanced
cinema gamma, external time code synchronisation
and sturdy professional connectors on a rugged die
cast chassis.
From live field recording to high-end studio
production, the GY-HD251 is the cost-effective
answer to today's demand for high quality image-
creation which is both flexible and affordable.
Optimised picture quality from innovative JVC technology within GY-HD200/201/251
A/D
converter
64MHz
14bit
14-bit A/D converter
To improve both the S/N ratio and the horizontal resolution, a new 14-bit A/D converter was specially developed by JVC to prevent signal
deterioration and to generate a fourfold increase in gradations.
Wideband front end processing
The ProHD camcorder uses a wideband analogue front end to process its CCD sampling via the 14-bit A/D converter. This further
improves the S/N ratio and horizontal resolution by optimising the CCD drive circuitry. The new LVDS (Low Voltage Differential Signal)
interface minimises any other possible signal degradation and so contributes to the improved S/N ratio.
Enhanced linearity
To enable 720p/50 recording, a new super encoder and a new pixel converter were developed, incorporating an adaptive filter which
optimises the scalar performance of cross-converted signals, including 1080i. The resultant effects are increased resolution and reduced
aliasing. Objects thus have much more natural looking edges and images are therefore extremely lifelike in appearance.
Compact ProHD camcorder for Studio and ENG applications
Wideband
AFE
Linearity
Horizontal resolution and signal-to-noise ratio have
been enhanced, making the already high ProHD
picture quality even better. Together with ProHD's
superior colour reproduction, these improvements
ensure true professional quality HD imaging.
GY-HD251 fitted to the
optional Studio Adapter KA-
HD250 and with optional LCD
Studio Viewfinder.
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