![]() Where you would normally configure a simple LNB, we are going to configure much more. Myth builds this sort of switching mechanism using a tree structure under the Card Input section of mythtv-setup. So you can see that we are going to need to control the DiSEqC 1.0 switch, the 22kHz Tone and the voltage (polarisation) to select which LNB we want to receive from. Port H = DiSEqC B - No 22kHz Tone - 13V (Vertical Polarisation).Port G = DiSEqC B - No 22kHz Tone - 18V (Horizontal Polarisation).Port F = DiSEqC B - 22kHz Tone - 13V (Vertical Polarisation). ![]() Port E = DiSEqC B - 22kHz Tone - 18V (Horizontal Polarisation).Port D = DiSEqC A - 22kHz Tone - 18V (Horizontal Polarisation).Port C = DiSEqC A - 22kHz Tone - 13V (Vertical Polarisation).Port B = DiSEqC A - No 22kHz Tone - 18V (Horizontal Polarisation).Port A = DiSEqC A - No 22kHz Tone - 13V (Vertical Polarisation).The ports on the 154 are selected as follows: The image below shows how this switch can be used to access all KU-Band satellites visible in the New Zealand sky. In New Zealand there are 8 satellites with beams pointed in useful directions This is necessary to be able to tune to channels from different satellites. The EMP-154AP Multiswitch allows 4 receivers to switch between 8 LNBs.
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