Abbreviation List - Philips 29PT5445/85 Service Manual

Circuit Descriptions, List of Abbreviations, and IC Data Sheets
PW_ADJ
This signal is generated by the UOC through a PWM port. This
PWM port is configured in Push Pull mode to generate a square
wave signal of 0 to 100% duty cycle with a default value of 50%
duty cycle.
PW_ADJ will eliminate tolerance and can adjust the picture
wide slightly.
9.8.5 Protection Events
Several protection events are controlled by the UOC. In case
one of these protections is activated, the set will go to
"Standby" mode.
Deflection Protections
The main protections for deflection are X-ray protection, frame
amplifier failure detection, black current loop stability
protection, and +8V auxiliary supply protection. For X-ray
protection, the X-ray detection bit, XDT, must always be set to
"1" (detection mode). High EHT protection must be triggered
via software upon detection of the XPR bit switching to "1".
A suitable number of checks are done before putting the set
into protection mode in order to prevent false triggering.
For service requirements, the Enable Vertical Guard (RGB
blanking), EVG, can be disabled (set to "0") although this is not
necessary.
The following bits are monitored:
• SUP (Supply voltage indication)
• XPR (X-ray protection)
• EVG (Enable Vertical Guard)
• NDF (Output Vertical Guard)
• BCF (Black Current Failure)
I2C Protection
To check whether all I2C IC's are functioning.
L03.1U AA
9.9

Abbreviation List

2CS
ACI
ADC
AFC
AFT
AGC
AM
AP
AR
ATS
AV
AVL
BCL
B/G
BTSC
CC
ComPair
CRT
CSM
CTI
CVBS
CVI
DAC
DBX
D/K
DFU
DNR
DSP
DST
DVD
EEPROM
EHT
EHT-INFO
EPG
EU
EW
EXT
FBL
FILAMENT
FM
H
HP
I
I2C
IF
IIC
9. EN 47
2 Carrier (or Channel) Stereo
Automatic Channel Installation:
algorithm that installs TV sets directly
from cable network by means of a
predefined TXT page
Analogue to Digital Converter
Automatic Frequency Control: control
signal used to tune to the correct
frequency
Automatic Fine Tuning
Automatic Gain Control: algorithm that
controls the video input of the feature
box
Amplitude Modulation
Asia Pacific
Aspect Ratio: 4 by 3 or 16 by 9
Automatic Tuning System
External Audio Video
Automatic Volume Leveler
Beam Current Limitation
Monochrome TV system. Sound
carrier distance is 5.5 MHz
Broadcast Television Standard
Committee. Multiplex FM stereo sound
system, originating from the USA and
used e.g. in LATAM and AP-NTSC
countries
Closed Caption
Computer aided rePair
Cathode Ray Tube or picture tube
Customer Service Mode
Color Transient Improvement:
manipulates steepness of chroma
transients
Composite Video Blanking and
Synchronization
Component Video Input
Digital to Analogue Converter
Dynamic Bass Expander or noise
reduction system in BTSC
Monochrome TV system. Sound
carrier distance is 6.5 MHz
Direction For Use: description for the
end user
Dynamic Noise Reduction
Digital Signal Processing
Dealer Service Tool: special remote
control designed for dealers to enter
e.g. service mode
Digital Versatile Disc
Electrically Erasable and
Programmable Read Only Memory
Extra High Tension
Extra High Tension information
Electronic Programming Guide
Europe
East West, related to horizontal
deflection of the set
External (source), entering the set via
SCART or Cinch
Fast Blanking: DC signal
accompanying RGB signals
Filament of CRT
Field Memory or Frequency
Modulation
Horizontal sync signal
Headphone
Monochrome TV system. Sound
carrier distance is 6.0 MHz
Integrated IC bus
Intermediate Frequency
Integrated IC bus