Patent ID: 8335476

Claim:
A maintenance method comprising: providing a first condition device comprising a first thru state switch and a first plurality of condition circuits, wherein said first condition device is permanently connected between a feed system and an antenna; receiving, by said first condition device, a first control signal; disabling, by said first thru state switch in response to said first control signal, a connection to said antenna; receiving, by said first condition device, a second control signal; enabling, by a first circuit of said first plurality of condition circuits in response to said second control signal, a first condition; generating, by said first condition device, a first altered response of said feed system, wherein said first altered response is associated with said first condition; receiving, by said first condition device, a third control signal; disabling, by said first circuit of said first plurality of condition circuits in response to said receiving said third control signal, said first condition; after said disabling said first condition, enabling by a second circuit of said first plurality of condition circuits, a second condition differing from said first condition; generating, by said first condition device, a second altered response of said feed system, wherein said second altered response is associated with said second condition; receiving, by said first condition device, a fourth control signal; disabling, by said second circuit of said first plurality of condition circuits in response to said receiving said fourth control signal, said second condition; after said disabling said second condition, enabling by a third circuit of said first plurality of condition circuits, a third condition differing from said first condition and said second condition; and generating, by said first condition device, a third altered response of said feed system, wherein said third altered response is associated with said third condition, wherein said first altered response, said second altered response, and said third altered response in combination are used to normalize an analyzer and said feed system, and wherein said analyzer is connected to said feed system.