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SMCIP 401 ASI
5
P
rogramming
5.1 n
otes
on
frequenCy
set ting
If you fit in the "new" transponder to an existing SAT IF range, you have to set
the output frequency
to a gap
(or the beginning/end) of the spectrum.
—> To ensure that an existing gap will not occupied by the satellite op-
erator, you can cut the upper end of the frequency spectrum in order
to generate your own gap by using a filter to the LNB input
9
. Our
filters lower the frequency spectrum from 1920 MHz ("GF1920")
resp. 2120 MHz ("GF2120") on to -30 dB.
-60
dB
-30
0
MHz
GF1920
1900
1500
1000
-60
dB
-30
0
2100 MHz
1500
1000
GF2120
ASI in
ASI out
GF 2120
