ETS-Lindgren 2171B Boresight Antenna Tower - Manual (Page 9)

Introduction | 9
1.0 Introduction
The ETS-Lindgren Model 2171B/2170B Antenna
Positioning Tower meets ANSI C63.4
requirements for measurements above 1 GHz by
keeping the antenna aimed at the equipment under
test (EUT) while the antenna ascends and
descends the mast. This is especially useful when
high gain directional antennas are used.
The Model 2171B easily adjusts for non-boresight
testing and for 3-m, 5-m, and 10-m boresight
testing.
The Model 2171B/2170B is constructed as a
single-piece mast of high density
fiberglass-reinforced polymer square tubing. This
material has a high degree of immunity from
extended exposure to sunlight. The
Model 2171B/2170B is also designed with a
reduced base for easier maneuverability in smaller
chambers.
A toothed belt drive provides smooth ascent and
descent of the carrier assembly. The belt is an
industrial grade composite that was selected for
strength and longevity.
Model 2171B boresight
(antenna not included)
The Model 2171B/2170B features variable speed operation with speed rates that
range from 3 cm/sec to 22 cm/sec, as controlled by an ETS-Lindgren positioning
controller. For more information on the positioning controller, see page 11.
The Model 2171B/2170B accepts stinger and other standard ETS-Lindgren
antenna mounts. See Mounting Antennas on page 51 for more information.