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. |
