參數(shù)資料
型號(hào)： SC9318FB
廠商： 杭州士景電子有限公司
英文描述： DIGITAL TUNING SYSTEM
中文描述： 數(shù)字調(diào)諧系統(tǒng)
文件頁(yè)數(shù)： 23/36頁(yè)
文件大?。?/td> 671K
代理商： SC9318FB
Silan
Semiconductors
SC9318-033
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 1.0 2002-01-16
23
Without LW/TV enable jumper
IN
IN
OUT
B0
B1
TVout
FM
L
L
L
SW
H
H
L
MW
H
L
L
WB
L
H
H
WB is selected at USA area
MANUAL TUNING/SEEK TUNING
1. Principal function
1 push/ 1 step and seek tuning.
2. Input ports and keys be used.
UP key, DOWN key
3. Function
a.
1 push/ 1 step tuning by UP/DOWN key.
b.
When UP/DOWN key is pushed for more than 500ms, seek tuning is started.
c.
The seek tuning is stopped. If IFcount-enable jumper is “ON”, the stop signal specified is input on IF
INPUT, else IFcount-enable jumper is “OFF”, the stop signal specified is input on SD INPUT.
d.
But seek tuning is not stopped even when a station was detected, in case UP/DOWN key is pushing
continue.
e.
The scan time is 200ms/ step in TV/WB band. In other bands, it is 100ms/step.
f.
The tuning method is the saw tooth wave form method, and when the receiving frequency rearch the
band edge, if goes to the opposite side and the continuous tuning is hold for 500ms. In case of meter
band, refer explanation of the meter band.
g.
When the LW band received, manual tuning is 1kHz/step, but seek tuning is 9kHz/step.
h.
In case of used SD signal.
AM 729kHz
PLL Set
SD in
SD
Check
I
L
NG
738KHz
PLL Set
SD
Check
I
H
OK stop
FM 79.9MHz
PLL Set
SD in
SD
Check
I
L
NG
80.0MHz
PLL Set
SD
Check
I
H
OK stop
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