Daewoo DTM-2930MP, Service Manual, Page: 53 / 66

ANALOG 2-CARRIER SYSTEMS
[Table] Frequency modulation
STANDARD
SOUND
SYSTEM
CARRIER
FREQUENCY
(MHz)
FM DEVIATION(kHz)
NOM./MAX./OVER
BANDWIDTH/
DE-EMPHASIS
(kHz/us)
SC1 SC2
M Mono 4.5 15/25/50 Mono
-
15/75
M A2+ 4.5/4.724 15/25/50 1/2(L+R) 1/2(L+R) 15/75(Korea)
B/G A2 5.5/5.742 27/50/80 1/2(L+R) R 15/50
1 Mono 6.0 27/50/80 mono
-
15/50
D/K(1) A2* 6.5/6.258 27/50/80 1/2(L+R) R 15/50
D/K(2) A2* 6.5/6.742 27/50/80 1/2(L+R) R 15/50
D/K(3)
A2*
6.5/5.742 27/50/80 1/2(L+R) R 15/50
[Table] Identification for A2 systems
PARAMETER A2/A2* A2+ (KOREA)
Pilot frequency 54.6875kHz = 3.5 x line freq. 55.0699 kHz = 3.5 x line freq.
Stereo identification frequency
117.5 Hz = line freq /1 3 3 149.9 Hz = line freq /1 0 5
Dual indetification frequency 274.1 Hz = line freq / 57 276.0 Hz = line freq / 57
AM modulation depth 50% 50%
2-CARRIERSYSTEMSWITHNICAM
[Table] NICAM standards
STANDARD
SC2
(MHz)
NICA
M
DE-
EMPAHSIS
ROLL­
OFF (%)
NICAM
CODING
FREQUENCY
(MHz)
TYPE
MODULATION
INDEX(%)
NOM./MAX.
DEVIATION
(kHz)
NAM./MAX.
/OVER
B/G 5.5 FM
-
27/50/80 5.85 J17 40 Notel
I 6.0 FM
-
27/50/80 6.552 J17 100 Notel
D/K 6.5 FM
-
27/50/80 5.85 J17 40 Notel
L 6.5 AM 54/100
-
5.85 J17 40 Notel
Note 1. See ‘EBU specification’ or equivalent specification.
9 FUNCTIONAL DESCRIPTION SOUND PROCESSOR
9.1 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.
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