ETS-Lindgren HI-4455 Isotropic Field Probe (Archived) - Manual (Page 7)

HI-4455 Isotropic Electric Field Probe
© ETS-LINDGREN L.P. – August 2005
Revision D- Part No. H-600076 7
1. INTRODUCTION
The HI-4455 is a battery-operated broadband Isotropic Electric Field
Probe designed for use in making RF exposure measurements in the
vicinity of broadcast facilities and industrial RF sources. Applications
include: Health and Safety monitoring, measuring microwave
transmitters and antennas, EMI monitoring, and measuring the fields
generated by ISM equipment. This probe uses optical isolation to
minimize field perturbation during measurements.
The HI-4455 probe assembly consists of a conical casing, containing the
sensor, which is mounted on one end of a shaft; the other end of the
shaft is attached to an extrusion that houses the electronics (Figure 1).
The sensor and electronics housing operate-and are calibrated-as a unit.
The HI-4455 measures the field strength in each of three axes. It
performs a vector addition calculation on the readings and sends the
resultant to the receiver via a fiber optic cable. Frequency response of
the HI-4455 is 200 kHz to 40 GHz; dynamic range is 2 to 300 Volts per
meter (V/m).
Archived 4/2/10