Circuit Descriptions and Abbreviation List
9.
FBSCO
Fixed Beam Current Switch Off, a 140
V dip detection to activate the black
switch off circuit
FBX
Feature BoX: part of the small signal
board /separate module which
contains 100 Hz processing, extra
features and AutoTV algorithms
(FBX6= based on PICNIC, FBX7=
based on PICNIC and Eagle)
FDS
Full Dual Screen
FILAMENT
Filament of CRT
FLASH
FLASH memory
FM
Field Memory or Frequency
Modulation
G-TXT
Green TeleteXT
GND-DRIVE
A separate ground for the line-drive
toward the line driver
HA50
Horizontal Acquisition 1fh: horizontal
sync pulse coming out of the HIP
HD100
Horizontal Drive 2fH: horizontal sync
pulse coming out of the feature-box
HD@HOME
A signal from the OTC, to switch the
HOP to the Pixel Plus standard (60 Hz
frame)
HFB
Horizontal Flyback Pulse: horizontal
sync pulse from large signal deflection
HIP
High-end video Input Processor
(TDA9320): video and chroma
decoder.
HOP
High-end video Output Processor
(TDA9330): video, sync, and
geometry controller
HP
HeadPhone
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
Last Status
The settings last chosen by the
customer and read and stored in RAM
or in the NVM. They are called at start-
up of the set to configure it according
to the customer's preferences
LDP
Line Deflection Protection signal,
derived from the EW current and
voltage
LED
Light Emitting Diode
LINE-DRIVE
LINE DRIVE signal (for the Line
transistor)
LNA
Low Noise Adapter
LSP
Large Signal Panel
MSP
Multi-standard Sound Processor: ITT
sound decoder
MUTE
MUTE Line
NC
Not Connected
NVM
Non Volatile Memory: IC containing
TV related data such as alignments
O/C
Open Circuit
ON/OFF LED
ON/OFF control signal for the LED
OSD
On Screen Display
OTC
On screen display Teletext and
Control; also called Artistic (SAA5800)
P50
Project 50 communication: protocol
between TV and peripherals
PCB
Printed Circuit Board
PICNIC
Peripheral Integrated Combined
Network IC (SAA4978): main IC for
100 Hz features and feature
processing
PIP
Picture In Picture
Progressive Scan
Scan mode where all scan lines are
displayed in one frame at the same
time, creating double vertical
resolution.
PTP
Picture Tube Panel
RAM
Random Access Memory
R-TXT
Red TeleteXT
RC
Remote Control
RC5 / RC6
Signal protocol from the remote
control receiver
RESET
RESET signal
RGB-PIP
RGB-input for PIP
RGB-TXT
RGB-input for TeleteXT and OSD
RGB-VC
RGB-input to the Picture Tube Panel
ROM
Read Only Memory
SAM
Service Alignment Mode
SC
SandCastle: two-level pulse derived
from sync signals
S/C
Short Circuit
SCAVEM
SCAn VElocity Modulation
SCL-F
CLock Signal on Fast I
2
C bus
SD
Standard Definition
SDA-F
DAta Signal on Fast I
2
C bus
SIF
Sound Intermediate Frequency
SIMM
80-fold connector between LSP and
SSB
SNERT
Synchronous No parity Eight bit
Reception and Transmit
SSB
Small Signal Board
STBY
STandBY
SW
SubWoofer
TXT
TeleteXT
µ
P
Microprocessor
U100
U from Feature Box
V100
V from Feature Box
VA50
Vertical Acquisition 1fH
VBAT
Main supply for deflection (usually 141
V)
VD100
Vertical Drive 2fH: vertical sync pulse
from deflection
VDPOS
One of the symmetrical drive signals
for the DC frame output stage.
VDNEG
One of the symmetrical drive signals
for the DC frame output stage.
VFB
Vertical Flyback Pulse: vertical sync
pulse coming from the feature box
VL
Variable Level out: processed audio
output toward external amplifier
WYSIWYR
What You See Is What You Record:
record selection that follows main
picture and sound
X-RAY-PROT
A PROTection signal against
excessive X-RAY radiation
XTAL
Quartz crystal
Y100
Y from Feature Box
Y-OUT
Luminance-signal to HOP IC
YUV-Feat
The YUV input for the main picture,
coming from the Feature box or the
HIP
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