Sony ISSUE 3 Camcorder User Manual


 
DEPTH OF FIELD
The distance between the furthest and
nearest points at the same level of definition
within a certain view.
DIGITAL VIDEO
A video storage media using 5:1
compression method.
DWELL TIME
Amount of time that a sequential switcher
allows between the viewing of the different
cameras connected to it.
EXWAVEHAD
Trademark of latest Sony Hole Accumulated
Diode charge coupled device.
ELECTRONIC SHUTTER
CCD iris which eliminates the need for an
auto iris lens.The CCD iris automatically
controls the light intensity by adjusting the
electronic shutter speed.
FRAME
A single television or film image. In European
television, 25 frames per second is used to
give an illusion of continuous movement.
Each frame in TV is normally two fields.
FOCAL LENGTH
Distance from the optical centre of a lens to
the focal plane. Generally referred to in
millimetres.
FOCAL POINT
Point at which light passing through a lens
is concentrated.
F STOP
Figure given of the ratio between a lens
aperture and its length.
GAMMA
Unit of measurement for one amount of
contrast in an image.
GENLOCK
A means of locking a video source to a
second video source or reference signal.
GROUNDLOOP
A condition that occurs when two or more
grounded points in an electrical system
develop a conductive loop between them.
HAD SENSOR
An improved type of semi-conductor sensor
which gives cameras a better smear and
noise performance.
HDR
Hard Disk Recorder.A device which
captures images to hard disk.
HSR
Hybrid Surveillance Recording.A combination
of hard disk and Digital Video in one recording
machine which greatly increase the storage
capacity over HDR.
HYPER HAD
An improved version of the Sony HAD sensor,
using on-chip lens technology to provide
increased sensitivity.
IMAGE INTENSIFIER
Device which uses photo multiplier
technology to amplify the available light to
increase the sensitivity of a camera.
ISDN
Integrated Services Digital Network. Digital
phone line with transmission speeds of up to
128Kb per second. Used with PMS video
transmission systems.
INFRA-RED
A range of frequencies just below the
visible spectrum. Can be used for the
transmission of information or for providing
additional illumination for cameras.
INTERLACE 2:1
Scanning process for reducing the image
flicker consisting of successively scanned
lines which adjacent lines belong to
different fields.
LINE FED CAMERA
See Triple Multiplex.
LINE LOCK
Method of synchronising AC powered
cameras.
LUX
Metric unit of measurement of light.
MEGASTREAM
A network (normally fibre optic) allowing
the transmission of data at 1Mbits per second
or faster.
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For more information contact the Sony Business Information Centre: 01932 816340
Basic CCTV Terminology