Philips EM5.2E Service Manual page 69

Circuit Descriptions, Abbreviation List, and IC Data Sheets
LINE DRIVE Line drive signal (for the Line
transistor)
LNA Low Noise Adapter
LORE LOcal REgression based noise
reduction
LSP Large signal panel
MSP Multi-standard Sound Processor: ITT
sound decoder of EM5E
MUTE Mute-Line
NC Not Connected
NVM Non Volatile Memory: IC containing
TV related data e.g. 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 named 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 featuring 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 a 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 I2C bus
SD Standard Definition
SDA-F Data signal on fast I2C 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
SWAN Spatial Weighted Averaging Noise
reduction
TXT Teletext
TXT-DS Teletext Dual Screen
TXT-KILL To kill the TXT picture to insert a PIP.
It has a higher priority than FBL-TXT.
uP Microprocessor
U100 U from Feature Box
V100 V from Feature Box
VA50 Vertical Acquisition 1Fh
VBAT Main supply for deflection (mostly 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.
EM5.2E AA
VDS Virtual Dolby Surround
VFB Vertical Flyback Pulse: vertical sync
pulse coming from the Feature Box
VL Variable Level out: processed audio
output towards external amplifier
WYSIWYR What You See Is What You Record:
record selection that follows main
picture and sound
X-RAY-PROT A protection signal for too high 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
9. EN 93