EASS
Electronic Article Surveillance System:
is used in retail shops to electronically
tag the merchandise to prevent shop thefts.
A CCTV system can be interfaced with an
EASS system so that the appropriate camera
is switched on when an offence occurs.
EIA:
is a scanning method specified
by the Electrical Industry Association.
RS-170 is the standard for monochrome
and RS-170A is the standard for color.
Electrical
filter:
is a type of electrical circuitry
designed to limit transmission of certain
frequencies.
Electron
beam:
is a concentrated flow of electrons
in a nominated direction.
Electronic
shutter speed:
see Shutter speed
Shutter
speed:
is the speed at which the charge
is read out from the CCD chip. The factory
setting is 1/50 sec (PAL) or 1/60 sec
(NTSC) and can be increased up to 1/100,000
sec depending upon the camera brand. It
can be changed by using dip switches or
in some cases by the in built menu in
the camera.
EMI
Electro Magnetic Interference:
is a interference which is usually
caused by any electrical equipment radiating
electro magnetic frequencies.
Ergonomics:
is the study of man, machine
and the environment to achieve maximum
efficiency.
Event
recorder:
is a type of recorder that is
normally maintained in pause mode and
starts recording only when activated by
an alarm.
Extruded
aluminium:
is aluminium processed through
a die and shaped for use to construct
housings for CCTV applications.
Extruded
plastic:
is a process in which smoked
or tinted plastic is processed and shaped
to construct dome housings. |
