Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.
G
Green
H
H_sync to the module
H-DRIVE
Horizontal Drive
H-FLYBACK
Horizontal Flyback
H-OUT
H_sync output of the module /
Horizontal Output pulse
HA
Horizontal Acquisition; horizontal sync
pulse
HFB
Horizontal Flyback Pulse; Horizontal
sync pulse from large signal deflection
HW
Hardware
I
Monochrome TV system. Sound
carrier distance is 6.0 MHz. VHF- and
UHF-band
I
2
C
Inter IC bus (also called IIC)
I
2
S
Inter IC Sound bus
IC
Integrated Circuit
IF
Intermediate Frequency
IIC
Inter IC bus (also called I2C)
Interlaced
Scan mode where two fields are used
to form one frame. Each field contains
half the number of the total amount of
lines. The fields are written in "pairs",
causing line flicker.
IO
In/Out
IR
Infra Red
L
Left audio channel
L/L’
Monochrome TV system. Sound
carrier distance is 6.5 MHz. L' is Band
I, L is all bands except for Band I
LATAM
LATin AMerica
LED
Light Emitting Diode
LOT
Line Output Transformer (also called
FBT); The transformer in which the
EHT is generated
LS
Loud Speaker
M/N
Monochrome TV system. Sound
carrier distance is 4.5 MHz. M= 525
lines @ 60 Hz, N= 625 lines @ 50 Hz
MOFR
Metal Oxide Film Resistor
MOSFET
Metal Oxide Semiconductor Field
Effect Transistor
MPX
MultiPleX
NAFTA
North American Free Trade
Association: Trade agreement
between Canada, USA and Mexico
NC
Not Connected
NICAM
Near Instantaneously Companded
Audio Multiplexing; This is a digital
sound system, mainly used in Europe
NTC
Negative Temperature Coefficient,
non-linear resistor (resistance
decreases if temperature increases)
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
data such as alignment values, preset
stations
OB
Option Byte
OC
Open Circuit
OP
OPtion byte
OSD
On Screen Display
P50
Project 50; Communication protocol
between TV and peripherals
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 (or PWB)
PLL
Phase Locked Loop; Used for e.g.
FST tuning systems. The customer
can directly provide the desired
frequency
Progressive Scan
Scan mode where all scan lines are
displayed in one frame at the same
time, creating a double vertical
resolution.
PTC
Positive Temperature Coefficient, non
linear resistor (resistance increases if
temperature increases)
PWB
Printed Wiring Board (also called PCB
or CBA)
QSS
Quasi Split Sound
R
Right audio channel / Red
RAM
Random Access Memory
RC
Remote Control transmitter
RC5 (6)
Remote Control system 5 (6), the
signal from the remote control receiver
RF
Real Flat (picture tube) or Radio
Frequency
RGB
Red, Green, and Blue colour space;
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
RMS
Root Mean Square value
ROM
Read Only Memory
SAP
Secondary Audio Program; Generally
used to transmit audio in a second
language
SAW
Surface Acoustic Wave
SC
SandCastle: two-level pulse derived
from sync signals
S/C
Short Circuit
SCL
Serial Clock signal on I
2
C bus
SD
Standard Definition
SDA
Serial Data line of I
2
C bus
SDRAM
Synchronous DRAM
SIF
Sound Intermediate Frequency
SMC
Surface Mounted Component
SMD
Surface Mounted Device
SMPS
Switched Mode Power Supply
SND
SouND
SRAM
Static RAM
STBY
STandBY
SVHS
Super Video Home System
TBD
To Be Defined
TXT
Teletext; TXT is a digital addition to
analogue TV signals that contain
textual and graphical information (25
rows x 40 columns). The information is
transmitted within the first 25 lines
during the Vertical Blank Interval (VBI)
µC
Microcontroller
UOC
Ultimate One Chip
µP
Microprocessor
UV
Colour difference signals
V
V_sync
V-BAT
Main supply for deflection (usually 141
V)
VA
Vertical Acquisition
VBI
Vertical Blanking Interval; Time during
which the video signal is blanked when
going from bottom to top of the display
VCR
Video Cassette Recorder
VGA
Video Graphics Array
VIF
Video Intermediate Frequency
WE
Write Enable control line
WST
World System Teletext
XTAL
Quartz crystal
Y
Luminance signal
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