Functional Description Sound Processor; The Uoc Iii Tv Sound Concept - Daewoo CP-520 Service Manual

PARAMETER
Pilot frequency
Stereo identification frequency
Dual indetification frequency
AM modulation depth
2-CARRIERSYSTEMSWITHNICAM
[Table] NICAM standards
STANDARD FREQUENCY
(MHz)
B/G 5.5
I 6.0
D/K 6.5
L 6.5
Note 1. See 'EBU specification' or equivalent specification.

5.4 FUNCTIONAL DESCRIPTION SOUND PROCESSOR

5.4.1 The UOC III TV Sound Concept

The UOCIII sound concept is implemented over the video processor and TCG-microcontroller.
Only relevant blocks, functions and signal flows for sound are given.
The tuner receives a RF signal and converts it to IF. Via appropriate SAW filters the SIF signal is
delivered to the QSS stage of the video processor and if channels according to standard L/L' are
received also to the AM demodulator. The Quasi Split Sound demodulation generates the SSIF
or intercarrier signal. By the SSIF switch it is possible to choose between the internally derived
DTV R&D Europe
A2/A2*
54.6875kHz = 3.5 x line freq.
117.5 Hz = line freq / 133
274.1 Hz = line freq / 57
50%
SC1
MODULATION
TYPE
INDEX(%)
NOM./MAX.
FM -
FM -
FM -
AM 54/100
CP-520/520A/520F Service Manual
SC2
(MHz)
DEVIATION
NICA
(kHz)
M
NAM./MAX.
/OVER
27/50/80 5.85
27/50/80 6.552
27/50/80 5.85
- 5.85
A2+ (KOREA)
55.0699 kHz = 3.5 x line freq.
149.9 Hz = line freq / 105
276.0 Hz = line freq / 57
50%
DE- ROLL-
EMPAHSIS OFF (%)
J17 40
J17 100
J17 40
J17 40
NICAM
CODING
Note1
Note1
Note1
Note1
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