Operation, a toothed belt drive provides smooth ascent and decent of the carrier assembly. Retrieved from " p?titleAntenna_ boresight oldid ". Variable speed with soft start and stop. During scans, this tower maintains constant directional antenna positioning while varying the angle between the antenna and the mast. Mounting methods maintain the antenna's centerline axis during polarization. Load capability 6 kg MAP2.5-T Positioner for E-Field Generators For height adjustment, polarisation and tilting of heavy E-Field Generators. Fiber optic lines are used between the antenna mast and positioning controller to eliminate RF noise coupling.
2171B Boresight Antenna Tower
New trolley guide concept enhances azimuthal stability. Monolithic construction of major components results in unbreakable, lifetime utility. Flexible Antenna Mounting, the 2171B accepts stinger or classic emco antenna mounts. This means that as the tower raises the antenna above the EUT, measured field strength levels will be lower than actual values. Load capability 10 kg BAM4.0-P TAM4.0-E TAM4.0-P Manual Antenna Positioner Manual height adjustment.3 -.5 m Tilting and rotating angle /- 30 Polarisation Manual Max. EMCenter Configured with EMControl, fiber Optic Cables). Manual height adjustment.7.0 m (4.0 m). Absence of conductive material bord gais teater sittplan above the motor box minimizes the electro-magnetic cross section, and minimizes coupling to antennas. The tilting of the antenna will maintain the EUT within the half power (-3 dB) beamwidth.
Tower meets ansi C63.4 requirements for measurements above 1 GHz by keeping the antenna aimed at the EUT during the antenna s ascent/descent along the antenna mast. For most antennas the boresight is the axis of symmetry of the antenna. For example, for axial-fed dish antennas, the antenna boresight is the axis of symmetry of the parabolic dish, and the antenna radiation pattern (the main lobe) is symmetrical about the boresight axis. Antenna, adapters for all commercially available antennas are available upon request.