Daewoo DTY-2880/28W5 Manuel D’Utilisation

CP-520/520A/520F Service Manual 

 

DTV R&D Europe

 

44

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 / 133 

149.9 Hz = line freq / 105 

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 

SC1 

MODULATION 

STANDARD  FREQUENCY 

(MHz) 

TYPE 

INDEX(%) 

NOM./MAX. 

DEVIATION 

(kHz) 

NAM./MAX. 

/OVER 

SC2 

(MHz) 

NICA

M 

DE- 

EMPAHSIS 

ROLL-

OFF (%) 

NICAM 

CODING 

B/G 

5.5 

FM 

- 

27/50/80 

5.85 

J17 

40 

Note1 

I 

6.0 

FM 

- 

27/50/80 

6.552 

J17 

100 

Note1 

D/K 

6.5 

FM 

- 

27/50/80 

5.85 

J17 

40 

Note1 

L 

6.5 

AM 

54/100 

- 

5.85 

J17 

40 

Note1 

 
Note 1.  See ‘EBU specification’ or equivalent specification. 
 

5.4  FUNCTIONAL DESCRIPTION SOUND PROCESSOR 

 
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