KNS SUPERTRACK S4 Installation And Operation Manual page 22

Connecting satellite TV receivers signal with European LNB when auto
switching using the DiSEqC signal (Use of the all polarity of satellite)
If the satellite TV receiver supports the DiSEqC function, you can automatically change
the satellite using DiSEqC. To send the DiSEqC signal to the ACU via the satellite TV
receivers, one splitter should be installed between the Master satellite TV receiver and
the ACU, as shown in Figure 2-19. As a result, the ACU will receive the signal to
change satellites when you change channels using your satellite TV receiver.
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