Samsung DVD-VR320/COM, Manual

Page: 236 / 249

Circuit Operating Descriptions
Samsung Electronics 14-37
BPF
MAIN
CONV ( - )
SUB
CONV ( + )
LPF
VIDEO IN
fs = 3.58MHz
320fh = 5.03MHz
fh = 15.734 KHz
fs = 3.579545MHz
40th = 629KHz
fs + 40th = 3.58MHz + 0.62MHz = 4.2MHz
40th = 629KHz
REC OUT
X’TAL
OSC
fs
BPF
fh
1/8
D/C
VC0
320fh
LPF
MAIN
CONV ( - )
SUB
CONV ( + )
BPF
PB COLOR IN
fs = 3.58MHz
320fh = 5.03MHz
fh = 15.734 KHz
fs = 3.579545MHz
40th = 629KHz
fs + 40th = 3.58MHz + 0.62MHz = 4.2MHz
40th = 629KHz
PB OUT
X’TAL
OSC
fs
BPF
fh
1/8
D/C
VC0
320fh
Fig. 14-22 Block Diagram of Color REC mode by the method of a Down Converter
Fig. 14-23 Block Diagram of Color PB mode by the method of a Down Converter