Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 70 TPM1.3HE LA9.
9.3 Abbreviation List
1080i 1080 visible lines, interlaced
1080p 1080 visible lines, progressive scan
ADC Analogue to Digital Converter
AFC Automatic Frequency Control: control
signal used to tune to the correct
frequency
AGC Automatic Gain Control: algorithm that
controls the video input of the feature
box
AM Amplitude Modulation
AP Asia Pacific
AR Aspect Ratio: 4 by 3 or 16 by 9
AV Audio Video
BTSC Broadcast Television System
Committee
CBA Circuit Board Assembly (or PWB)
ComPair Computer aided rePair
CSM Customer Service Mode
CVBS Composite Video Blanking and
Synchronisation
DAC Digital to Analogue Converter
DBE Dynamic Bass Enhancement: extra
low frequency amplification
DFU Directions For Use: owner's manual
DNR Dynamic Noise Reduction
DRAM Dynamic RAM
DSP Digital Signal Processing
DVI Digital Visual Interface
EEPROM Electrically Erasable and
Programmable Read Only Memory
EXT EXTernal (source), entering the set by
SCART or by cinches (jacks)
FLASH FLASH memory
FM Field Memory / Frequency Modulation
FTV Flat TeleVision
HD High Definition: 720p, 1080i, 1080p
HDMI High Definition Multimedia Interface,
digital audio and video interface
HP Head Phone
I Monochrome TV system. Sound
carrier distance is 6.0 MHz
I2C Integrated IC bus
I2S Integrated IC Sound bus
IC Integrated Circuit
IF Intermediate Frequency
IR Infra Red
IRQ Interrupt ReQuest
LATAM LATin AMerica
LCD Liquid Crystal Display
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 Loud Speaker
LVDS Low Voltage Differential Signalling,
data transmission system for high
speed and low EMI communication.
M/N Monochrome TV system. Sound
carrier distance is 4.5 MHz
MOSFET Metal Oxide Semiconductor Field
Effect Transistor
MPEG Motion Pictures Experts Group
MSP Multi-standard Sound Processor:
ITT sound decoder
NAFTA North American Free Trade
Association: Trade agreement
between Canada, USA and Mexico
NC Not Connected
NICAM Near Instantaneous Compounded
Audio Multiplexing. This is a digital
sound system, used mainly in Europe.
NTSC National Television Standard
Committee. Colour system used
mainly 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
TV related data (for example, options)
O/C Open Circuit
OSD On Screen Display
PAL Phase Alternating Line. Colour system
used mainly in Western Europe
(colour carrier = 4.433619 MHz) and
South America (colour carrier
PAL M = 3.575612 MHz and
PAL N = 3.582056 MHz)
PC Personal Computer
PCB Printed Circuit Board (or PWB)
PDP Plasma Display Panel
PLL Phase Locked Loop. Used, for
example, in FST tuning systems. The
customer can directly provide the
desired frequency
PWB Printed Wiring Board (or PCB)
RAM Random Access Memory
RC5 (6) Remote Control system 5 (6), the
signal from the remote control receiver
RGB Red, Green, and Blue. The primary
colour signals for TV. By mixing levels
of R, G, and B, all colours (Y/C) are
reproduced.
RGBHV Red, Green, Blue, Horizontal sync,
and Vertical sync
ROM Read Only Memory
SAM Service Alignment Mode
S/C Short Circuit
SCL Clock signal on I2C bus
SD Standard Definition: 480i, 576i
SDA Data signal on I2C bus
SDM Service Default Mode
SDRAM Synchronous DRAM
SECAM SEequence Couleur Avec Memoire.
Colour system used mainly in France
and Eastern Europe. Colour carriers =
4.406250 MHz and 4.250000 MHz
SIF Sound Intermediate Frequency
SMPS Switch Mode Power Supply
SOPS Self Oscillating Power Supply
S/PDIF Sony Philips Digital InterFace
SRAM Static RAM
STBY Stand-by
SVHS Super Video Home System
SW Sub Woofer / SoftWare
TXT TeleteXT
uP Microprocessor
VGA Video Graphics Array
WD Watch Dog
XTAL Quartz crystal
YPbPr Component video (Y= Luminance,
Pb/Pr= Colour difference signals B-Y
and R-Y, other amplitudes w.r.t. to
YUV)
Y/C Video related signals: Y consists of
luminance signal, blanking level and
sync; C consists of colour signal.
Y-OUT Luminance-signal
YUV Baseband component video
(Y= Luminance, U/V= Colour
difference signals)
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