Abstract: A system and method is provided for qualitative analysis of baseband building automation networks. The system may include a processor configured to carry out a plurality of tests on a serial communication network that includes at least one field device that carries out building automation communications on the network. A first test may include: transmitting a series of queries for devices on the network, in which the queries are transmitted at incrementally lower transmission signal levels until message loss is detected; and determining a first lower signal level at which transmissions of queries occur without message loss on the network. In addition, the processor may be configured to determine and output on a display device at least one classification of the relative quality of the network with respect to at least one predetermined scale of relative network quality based at least in part on the first lower signal level.

Abstract: The firefighting helicopter fans comprise a left pivoting cowled fan and a right pivoting cowled fan mounted onto the sides of a helicopter. The fans may be used to create an airstream, which counters the prevailing wind and/or blows flames and embers away from unburned materials. The fans are each protected by a cowl that surrounds the blades to protect the blades and direct the airstream. The left pivoting cowled fan and the right pivoting cowled fan are each coupled to the helicopter by a pivot axis and a pivot motor which allows the fanes to be aim directly forward, directly down, or any angle in between.

Abstract: A system and method is provided for qualitative analysis of baseband building automation networks. The system may include a processor configured to carry out a plurality of tests on a serial communication network that includes at least one field device that carries out building automation communications on the network. A first test may include: transmitting a series of queries for devices on the network, in which the queries are transmitted at incrementally lower transmission signal levels until message loss is detected; and determining a first lower signal level at which transmissions of queries occur without message loss on the network. In addition, the processor may be configured to determine and output on a display device at least one classification of the relative quality of the network with respect to at least one predetermined scale of relative network quality based at least in part on the first lower signal level.