Philips FTP2.4E, Service Manual

Page: 33 / 40

Circuit Descriptions, Abbreviation List, and IC Data Sheets EN 33 FTP2.4E AB 9.
• “On” state. In this state the module can perform the
following pre-programmed functions:
–
VCR (digital program) records.
– EPG updates.
– Over-the-air software download signalling detection
and software downloads.
• “Logical Stand-by” state. In this state only over-the-air
software download signalling detection and software
downloads can be performed.
9.10.4 On State
The TV set is fully functional and the module is powered up.
The module is in “On” or “Logical Stand-by” state.
•
“On” state. In this state all system functionality is available
or the module is in software downloading process.
• “Logical Stand-by” state. In this state only over-the-air
software download signalling detection and software
downloads can be performed.
9.11 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 and lock to the
correct frequency
AGC Automatic gain control (feedback)
signal to the tuner. This circuit ensures
a constant output amplitude
regardless of the input amplitude
AP or A/P Asia Pacific
AV External Audio Video
B-SC1-IN Blue SCART1/EXT1 in
B-SC2-IN Blue SCART2/EXT2 in
B-TXT Blue TeleteXT
B/G Monochrome TV system. Sound
carrier distance is 5.5 MHz. B= VHF-
band, G= UHF-band
C-FRONT Chrominance front input
CAM Conditional Access Module
CBA Circuit Board Assembly (also called
PCB or PWB)
CI(M) Common Interface (Module); E.g
PCMCIA slot for a CAM in a set top
box
ComPair Computer aided rePair. A tool for
diagnosing a TV through a PC
controlled interface
COFDM Coded Orthogonal Frequency Division
Multiplexing; A multiplexing technique
that distributes the data to be
transmitted over many carriers
CSM Customer Service Mode
CVBS Composite Video and Blanking Signal;
A single video signal that contains
luminance, colour, and timing
information
DAC Digital to Analogue Converter
DFU Directions For Use: Owner's manual
DCSM Digital Customer Service Mode
DRAM Dynamic RAM; dynamically refreshed
RAM
DSP Digital Signal Processing
DST Dealer Service Tool; Special remote
control designed for dealers to enter
e.g. service mode (a DST-emulator is
available in ComPair)
DVB Digital Video Broadcast; A method of
transmitting digital audio and video,
based on MPEG2
DVB-T DVB-Terrestrial; HDTV standard for
the EU
EEPROM Electrically Erasable and
Programmable Read Only Memory
EJTAG Enhanced Joint Test Action Group;
Definition for a standardised serial test
interface
EPG Electronic Program Guide: system
used by broadcasters to transmit TV
guide information (= NexTView)
EXT EXTernal (source), entering the set by
SCART or by cinches (jacks)
FBL Fast BLanking; DC signal
accompanying RGB signals. To blank
the video signal when it is returning
from the right side of the screen to the
left side. The video level is brought
down below the black video level
FBX Feature BoX; Part of the small signal
board /separate module which
contains 100 Hz processing, extra
features and AutoTV algorithms