Appendix: LNB and DiSEqC Settings
LNB
The LNB (Low Noise Block converter) is the microphone-link object in the center of the antenna dish. The values engraved on the LNB describe its local oscillator arrangement. LNB Settings must be entered for each satellite in the Satellite list.
Example: You purchase a new satellite antenna and recognize the microphone-like object in the middle of the dish as the LNB. Engraved on the side of the LNB are the words: Universal LNB L.O. 9.75 / 10.6 GHz (i.e. 9750 / 10600 MHz). Since L.O. (local oscillator) is 9.75 GHz, i.e. 9750 MHz, enter 9750 in the LOF1 textbox. Since L.O. (local oscillator) is 10.6 GHz, i.e. 10600 MHz, enter 10600 in the LOF2 textbox. Switch frequency is typically 11,700 for all LNBs, so enter 11700 at Switch.
A local oscillator (LO) in the antenna operates at its local oscillator frequency (LOF). A satellite dish antenna may have only one LO, or it it may have two LOs with a switch frequency marking the frequency at which the antenna switches from using the low band local oscillator to using the high band local oscillator. Values for LOF1, LOF2, and switch frequency depend on the specific model of dish antenna and how many LOs the antenna possesses.
DiSEqC
DiSEqC (Digital Satellite Equipment Control) settings are configured when the digital receiver card must receive satellite feed from multiple antennas or multiple LNBs. (Otherwise select None from the drop-down list.) The antenna DiSEqC settings must be specified for each satellite in the Satellite list. In the DiSEqc drop-down list, select the appropriate setting for the dish antenna:
- If you have one dish with one LNB:
Select:None
- If you have one dish with two LNBs:
For each LNB, select (exclusively) one of the following values from the pull-down list:Simple A
Simple BThe values should match designations on your antenna hardware; consult your equipment manufacturer.
- If you have multiple satellite dishes:
Up to eight LNBs or dish antennas can be supported. For each LNB, select a DiSEqC designation from the pull-down list. Select or deselect the 22 kHz checkbox as necessary. Example:
Satellite DiSEqC Setting 22 kHz 1 PosA - OptA selected 2 PosA - OptA deselected 3 PosB - OptA selected 4 PosB - OptA deselected 5 PosA - OptB selected 6 PosA - OptB deselected 7 PosB - OptB selected 8 PosB - OptB deselected
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