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Figure 5.9.8a – Sensor output, RSL
Three monitor points are selected for this example:
The RSL Min Lock Signal (parameter = RSL Minimum Lock Threshold),
RSL Rx Lock &
RSL Rx Signal.
Our “on satellite” signal level shows approximately 63.0 rel. which is well above the RSL Min Lock Sig.
threshold setting of 40.0. However, if the antenna is moved off satellite, our Rx Signal indicates 38.0
which represents the background noise level in this location.
With the background noise this close to our Minimum Lock Signal threshold, false triggering of the RSL
lock is likely and our threshold should be increased to insure a complete acquisition.
This setting is best determined empirically by first pointing to the satellite manually, then moving off
center by a few degrees and noting the RSL “Signal Strength” on the main status pane. The parameter
should be set a few units above this value. (5 to 10 units recommended depending upon “on satellite”
aggregate signal strength)
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