ETS-Lindgren 3181, User Manual

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Introduction
The radiation pattern is omni-directional in the H-plane, allowing the antenna to
receive signals from every direction around the axis. The range covers most
wireless bands worldwide, and is designed for the lowest possible VSWR across
the range of operation. The antenna exhibits better than 2:1 VSWR for most of
the range, and never exceeds 5:1 above 1 GHz.
The small sizes of the antennas enable them to be used for amplifier harmonic
measurements when performing tests per IEC 61000-4-3.
Each antenna is calibrated during manufacturing. The results of the calibration
are tabulated as gain and antenna factor vs. frequency for use in Specification
Compliance Testing. Typical data is provided starting on page 29.
The Model 3181/3183/3184 includes a stinger mount and ships with an antenna
mount assembly for a variety of mounting configurations. For information on the
4-TR, see the next section,
Tripod Options
; for mounting information, see
Mounting Instructions
on page 17.
Tripod Options
ETS-Lindgren offers the 4-TR
non-metallic, non-reflective tripod for use
at both indoor and outdoor EMC test
sites.
•
Constructed of linen phenolic and
delrin, designed with an adjustable
center post for precise height
adjustments.
•
Maximum height is 2.0 m (80.0 in),
and minimum height is 94 cm
(37.0 in).
•
Can support up to an 11.8 kg (26.0 lb)
load.