ETS-Lindgren 2005 Single Axis Positioner - Manual (Page 7)

Introduction | 7
1.0 Introduction
ETS-Lindgren’s Azimuth Positioner (AP) is designed to perform two-dimensional
measurements (or manual three-dimensional measurements) of spherical
antenna patterns. The AP includes a vertical support column that will
accommodate EUTs up to 11.33 kg (25 lbs).
The height of the vertical support column must be specified at the time the order
is placed as each is built according to the customer’s specified height. In order to
minimize any potential RF obstruction or distortion of RF signals from low
directive wireless transmit antennas, the AP vertical support column is
constructed of low dielectric materials.
The AP is equipped with one motor base, 110/220 VAC 50 or 60 Hz single phase
IEC receptacle is the standard power requirement. Current draw is less than 3
amps. The motor drive, in conjunction with the provided command set, controls
the movement of the unit. Optional EMQuest™ EMQ-1xx drivers are available
with the purchase of EMQuest software. In addition, the positioning system is
provided with an RS-232 control cable (15 feet long), which enables the I/O
signal between the motor base and the computer.
Finally, the system is provided with an RS-232 shield room filter including
integrated D sub-miniature connectors. The LMF-3995 RFI/EMI filter is a device
used in a wide variety of applications mainly as a means of protecting other
equipment from unwanted RFI and EMI. The filter may not protect against
voltage transients and current short circuits. Access to terminals for the filter can
only be accomplished by the removal of input and output covers. The covers are
secured with screws. The filter is provided with male (output) and female (input)
DB-9 connectors.