Circuit Descriptions, List of Abbreviations, and IC Data Sheets
EN 81L04E AB 9.
The module is in “On” or “Logical Standby” state.
• On state. In this state the module can perform the following
pre-programmed functions:
– VCR (digital program) records
– EPG updates
– Over-the-air software download signaling detection
and software downloads
• Logial Standby state. In this state only over-the-air
software download signaling detection and software
downloads can be performed.
9.9.4 On state
The set is fully functional and the module is powered up. The
module is in “On” or “Logical Standby” state.
• On state. In this state all system functionality is available or
the module is in software downloading process.
• Logial Standby state. In this state only over-the-air
software download signaling detection and software
downloads can be performed.
9.10 Abbreviation list
2CS 2 Carrier (or Channel) Stereo
ACI Automatic Channel Installation:
algorithm that installs TV sets directly
from cable network by means of a
predefined TXT page
ADC Analogue to Digital Converter
AFC Automatic Frequency Control: control
signal used to tune to the correct
frequency
AFT Automatic Fine Tuning
AGC Automatic Gain Control: algorithm that
controls the video input of the feature
box
AM Amplitude Modulation
AP Asia Pacific region
AR Aspect Ratio: 4 by 3 or 16 by 9
ATS Automatic Tuning System
AV External Audio Video
AVL Automatic Volume Leveler
BCL Beam Current Limitation
B/G Monochrome TV system. Sound
carrier distance is 5.5 MHz
BTSC Broadcast Television Standard
Committee. Multiplex FM stereo sound
system, originating from the USA and
used e.g. in LATAM and AP-NTSC
countries
CC Closed Caption
CCC Continuous Cathode Calibration
COFDM Coded Orthogal Frequency Division
Multiplexing
ComPair Computer aided rePair
CRT Cathode Ray Tube or picture tube
CSM Customer Service Mode
CTI Color Transient Improvement:
manipulates steepness of chroma
transients
CVBS Composite Video Blanking and
Synchronization
CVI Component Video Input
DAC Digital to Analogue Converter
DBX Dynamic Bass Expander or noise
reduction system in BTSC
D/K Monochrome TV system. Sound
carrier distance is 6.5 MHz
DFU Direction For Use: description for the
end user
DNR Dynamic Noise Reduction
DSP Digital Signal Processing
DST Dealer Service Tool: special remote
control designed for dealers to enter
e.g. service mode
DVD Digital Versatile Disc
EEPROM Electrically Erasable and
Programmable Read Only Memory
EHT Extra High Tension
EHT-INFO Extra High Tension information
EPG Electronic Programming Guide
EU Europe
EW East West, related to horizontal
deflection of the set
EXT External (source), entering the set via
SCART or Cinch
FBL Fast Blanking: DC signal
accompanying RGB signals
FILAMENT Filament of CRT
FM Field Memory or Frequency
Modulation
H Horizontal sync signal
HP Headphone
I Monochrome TV system. Sound
carrier distance is 6.0 MHz
I2C Integrated IC bus
IBO Intelligent Bolt On module
IF Intermediate Frequency
IIC Integrated IC bus
ITV Institutional TV
LATAM Latin American countries like Brazil,
Argentina, etc.
LED Light Emitting Diode
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 Large Screen or Loudspeaker
M/N Monochrome TV system. Sound
carrier distance is 4.5 MHz
NC Not Connected
NICAM Near Instantaneous Compounded
Audio Multiplexing. This is a digital
sound system, mainly used in Europe.
NTSC National Television Standard
Committee. Color system mainly used
in North America and Japan. Color
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
TV related data e.g. alignments
OB Option Bit
OC Open Circuit
OP Option Byte
OSD On Screen Display
PAL Phase Alternating Line. Color system
mainly used in West Europe (color
carrier = 4.433619 MHz) and South
America
(color carrier PAL M = 3.575612 MHz
and PAL N = 3.582056 MHz)
PCB Printed Circuit board
PLL Phase Locked Loop. Used for e.g.
FST tuning systems. The customer
can give directly the desired frequency
POR Power-On Reset
PTP Picture Tube Panel (or CRT-panel)
RAM Random Access Memory
RC Remote Control handset
RGB Red, Green, and Blue video signals
ROM Read Only Memory
SDAM Service Default / Alignment Mode
SAP Second Audio Program
SC Sandcastle: pulse derived from sync
signals
S/C Short Circuit
SCL Serial Clock
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