1-2 Operator's Manual LDK 200 Triax Introduction
Technology
The LDK 200 Triax camera combines a multi-role
digitalcamerahead using 2/3-inch CCD sensors with
a triax adapter. The result is a flexible camera that is
equally at home in the studio or out on location in an
OBenvironment.
Camera Head
TheFrameTransferCCDDPMsensorofferssuperior
performanceandcanhandlehighlightsofup to 600%.
The2/3-inch sensors have a high dynamicrange and
high linear sensitivity over all camera lens apertures.
Frame Transfer technology ensures that there is no
lagnorsmear. TheFrameTransferDPMsensoruses
Dynamic Pixel Management which allows the format
of the sensors to be switched between 4:3 and 16:9
aspect ratios at the touch of a switch without loss of
horizontal or vertical resolution. The 1000 pixels per
linein both formats ensures that thereis no loss in the
horizontalviewinganglebutalsoensureshighresolution
in the red, green and blue channels.
Digital Processing
The advanced digital processing of the camera is
based on 12-bit A/D converters and more than 20-bit
internal processing. Two DSPs combine all major
camera functions in the digital domain, including
knee, gamma, contour, matrix and colour correction.
Theintelligentcontinuousautomaticsfacilityprovides
automatic control of black levels and black shading.
Eachsensorprovidesblackreferencesignalsthatare
used to monitor temperature changes. This means
thatcontinuousautomatic correction isappliedwithout
operatorintervention.
The digital contour processing uses full amplitude
video RGB signals via an extended dynamic range
contour circuit.
Colorimetryisselectedbymeansofavariable6-point
digital matrix or via preset matrices. Digital gamma
circuits provide a wide range of standardised gamma
curves and enable soft contrast in black scenes to be
enhanced, together with hard contrast and saturated
colour in bright scenes. The matrix and gamma
sequenceissoftware programmableforprecisecolour
matching.
Film-like characteristics
The pivoting knee circuit adapts both the knee point
and the compression ratio according to the highlight
content of the picture to emulate the softly limiting S-
shaped transfer characteristics of film. Digital True
Colour Knee circuitry maintains the correct hue for
compressedhighlights,reproducingcoloursfaithfully,
even overexposed skin tones.
Digital contrast circuitry provides a black stretch
function for more detail in black areas and a black
press function for improving the contrast impression
by simulating the S-curve of film.
Advanced Triax Features
The full bandwidth of the Triax system allows remote
control of camera up to a distance of 2,400 meters
(7,875 feet). The Triax system uses full bandwidth R,
G and B signals. The double sideband modulation
provides automatic compensation of the amplitude
characteristics of each video channel. This results in
thebest possible linearity, lower crosstalk andhigher
signal to noise over the maximum cable length. The
chromakeyquality is excellent as the primary colours
donot have to be derived. Teleprompt and viewfinder
signals maintain high performance even with long
cable lengths.
The communication facilities provide for two-wire or
four-wire high quality intercom signals.
The LDK 200 Triax is plug compatible with existing
Philips base stations and full camera control is
provided via Series 9000 Universal Camera Control
system. Base station outputs can include an optional
serial digital video signal.
SuperXPander
An optional SuperXpander enables the camera to be
usedwithlargelenses so extending the camera's use
in studio and EFP situations.