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Circuit Descriptions, List of Abbreviations, and IC Data Sheets
9.9
Abbreviation List
2CS
ACI
ADC
AFC
AFT
AGC
AM
AP
AR
ATS
AV
AVL
BCL
B/G
BTSC
CC
ComPair
CRT
CSM
CTI
CVBS
CVI
DAC
DBX
D/K
DFU
DNR
DSP
DST
DVD
EEPROM
EHT
EHT-INFO
2 Carrier Sound
Automatic Channel Installation:
algorithm that installs TV channels
directly from a cable network by
means of a predefined TXT page
Analogue to Digital Converter
Automatic Frequency Control: control
signal used to tune and lock to the
correct frequency
Automatic Fine Tuning
Automatic Gain Control (feedback)
signal to the tuner. This is a circuit with
a constant output amplitude,
regardless of the input
Amplitude Modulation
Asia Pacific
Aspect Ratio: 4 by 3 or 16 by 9
Automatic Tuning System
External Audio Video
Automatic Volume Level control
Beam Current Limitater
Monochrome TV system. Sound
carrier distance is 5.5 MHz. B = VHF-
band, G = UHF-band
Broadcast Television Standard
Committee. Multiplex FM stereo sound
system, originating from the USA and
used e.g. in LATAM and AP-NTSC
countries
Closed Captioning; This is a digital
addition to analogue TV signals that
contains textual information relevant
to the TV signal. For NTSC, the
information is transmitted with line 21
and 284 during the Vertical Blank
Interval (VBI)
Computer aided rePair. A tool for
diagnosing a TV through a PC
controlled interface
Cathode Ray Tube (or picture tube)
Customer Service Mode
Colour Transient Improvement:
manipulation of the steepness of
chroma transients
Composite Video and Blanking Signal;
A single video signal that contains
luminance, colour, and timing
information
Component Video Input
Digital to Analogue Converter
Dynamic Bass Expander or noise
reduction system in BTSC
Monochrome TV system. Sound
carrier distance is 6.5 MHz. D = VHF-
band, K = UHF=band
Directions For Use: Owner's manual
Dynamic Noise Reduction; noise
reduction feature of the set
Digital Signal Processing
Dealer Service Tool: special remote
control designed for dealers to enter
e.g. service mode (a DST-emulator is
is avaible in ComPair)
Digital Versatile Disc
Electrically Erasable and
Programmable Read Only Memory
Extreme High Tension; the voltage
between the cathode and the shadow
mask that accelerates the electrons
towards the screen (around 25 kV)
Extra High Tension INFOrmation,
used for contrast reduction, vertical
L03.2L AA
and horizontal amplitude correction,
beam current protection, and flash
detection
EPG
Electronic Program Guide; System
used by broadcasters to transmit TV
guide information (= NexTView)
EU
Europe
EW
East West, related to horizontal
deflection of the set
EXT
EXTernal (source), entering the set via
SCART or Cinches
FBL
Fast BLanking; DC signal
accompanying RGB signals. To blank
the video signal when it is going from
the right side of the screen to the left
side. The video level is brought down
below the black video level
FILAMENT
Filament of CRT
FM
Field Memory; A memory chip that is
capable of storing one or more TV
picture fields, or: Frequency
Modulation; A technique that sends
data as frequency variations of a
carrier signal
H
H_sync to the module
HP
Headphone
I
Monochrome TV system. Sound
carrier distance is 6.0 MHz. VHF- and
UHF-band
2
I
C
Inter IC bus (also called IIC)
IF
Intermediate Frequency
IIC
Inter IC bus (also called I
ITV
Institutional TV
LATAM
LATin AMerica
LED
Light Emitting Diode; A semiconductor
diode that emits light when a current is
passed through it
L/L'
Monochrome TV system. Sound
carrier distance is 6.5 MHz. L' is Band
I, L is all bands except for Band I
LS
Loudspeaker
M/N
Monochrome TV system. Sound
carrier distance is 4.5 MHz. M= 525
lines @ 60 Hz, N= 625 lines @ 50 Hz
NC
Not Connected
NICAM
Near Instantaneous Companded
Audio Multiplexing. This is a digital
sound system, mainly used in Europe.
NTSC
National Television Standard
Committee. Colour system mainly
used in North America and Japan.
Colour carrier NTSC M/N = 3.579545
MHz, NTSC 4.43 = 4.433619 MHz
(this is a VCR norm, it is not
transmitted off-air)
NVM
Non Volatile Memory: IC containing
data such as alignment values, preset
stations
OB
Option Bit
OC
Open Circuit
OP
OPtion Byte
OSD
On Screen Display
PAL
Phase Alternating Line. Colour system
mainly used in West Europe (colour
carrier = 4.433619 MHz) and South
America (colour carrier PAL M =
3.575612 MHz and PAL N = 3.582056
MHz)
PCB
Printed Circuit board (also called PWB
or CBA)
PLL
Phase Locked Loop. Used for e.g.
FST tuning systems. The customer
can give in directly the desired
frequency
9.
EN 37
2
C)
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