| 摘要 |
A method for the control and application of a power supply to a low noise block (LNB) device and/or associated apparatus connected to a broadcast data receiver for satellite television. The method uses control means which, upon the switching on of the power supply, checks the voltage level at the LNB and if the voltage level exceeds a predefined threshold the LNB is deemed to be operable. If the voltage level is below the threshold level, the LNB is deemed to be inoperable, the power supply is switched off and then reapplied a period of time later and again the voltage level is checked. This allows genuine failure to be detected but allows initial failure due to capacitance loading to be overcome and an operable LNB to be accurately detected. |
