19
CIRCUIT OPERATION MANUAL
STA R T
Bi t CLK
P A C K E T
D7
E R R O R
First bit of the packet
Data Parity
Parity
Useful Data
1 Packet
RS0 = 0
RS0 = 1
Serial Data Output Timing
Serial Output Timing
(2) Related with LNB.
1) LNB power and 22khz Tone Pulse
The power supplied to LNB sends the 22Khz Tone signal that is used in horizontal(18V), vertical(13V) and frequency
Band and Diseqc Command.
Chart 6. LNB Control signals
22KHZ Tone Spec is
Function
High
Low
H/V
Horizental(18v)
Vertical (13v)
22Khz-ON
22Khz ON
22Khz OFF
LNB-ON
LNB ON
STD BY
AUX/IRD
IRD MODE
AUX MODE
(Loop Through)
(External SAT)
22Khz Tone Pulse
Summary of Contents for DSD-9255E
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Page 50: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp...
