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S7200 TV Signal Analyzer Operation Manual
Figure 5-68 Satellite Mode Power Setup
When user have multi satellite receive or multi user receiver requirement, the
control signals 13/18V, 0 / 22kHz and DiSEqC are needed.
We know, 18V is used to control horizontal polarization, 13V is used to control
vertical polarization. 0/22kHz signal is used to control Ku band high band and low
band switch. A 22kHz square-wave signal with 1V peak-to-peak value is
superimposed on 13V or 18V.
If user want to receive C band horizontal polarization signal, only use 18V signal,
as the Figure 5-69(A) show. If user want to receive C band vertical polarization
signal, only use 13V signal, as the Figure 5-69(B) show.
If user want to receive Ku band high band horizontal polarization signal, the 22kHz
square-wave signal is superimposed on 18V signal, the 0/22kHz status is "On", the
frequency is 22kHz, as the Figure 5-69(C) show. If user want to receive Ku band
high band vertical polarization signal, the 22kHz square-wave signal is
superimposed on 13V signal, the 0/22kHz status is "On", the frequency is 22kHz,
as the Figure 5-69(D) show.
If user want to receive Ku band low band horizontal polarization signal, the 22kHz
square-wave signal is not superimposed on 18V signal, the 0/22kHz status is "Off",
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