An array antenna apparatus in which an SN ratio is improved. Pieces of code in the surrounding area of the site andor in branches related to the site are analyzed and the properties of the analyzed pieces of code are compared with a predefined software code patterns, for determining whether the examined process code corresponds to one of the predefined software code patterns. The positioning instrument may comprise an alignment guide having a device portal for insertion of a device therethrough. A keyed interface operates a fastener, such as a compression latch, threaded coupling or lock plate, which is mounted on the door assembly such that the fastener secures the door assembly and the wrapper assembly in a closed position. The system and method further includes checking for receipt of the RLDP on the same bridge which sent the RLDP. The driving circuit supplies a driving voltage to first ends of the LED strings to drive the LED strings.