Atec Narda-EF1891 - Manual

NSTS 0312-E0234C-0.0 1 / 2 Subject to change
E-FIELD PROBE
EF1891
Measuring electric fields
from 3 MHz to 18 GHz
using instruments in the NBM-500 family
General public and occupational field
exposure from radio broadcasting, telecoms,
and radar
Isotropic (non-directional) measurement
64 dB dynamic range without changing
measurement range
The probe contains three orthogonally arranged dipoles with detector
diodes. The three voltages, corresponding to the spatial components,
are available individually at the probe output. The NBM basic unit
calculates the resulting isotropic field strength.
APPLICATIONS
The probe detects electric fields from 3 MHz to 18 GHz, covering the
fields generated by broadcasting, telecoms, and radar. The dynamic
range from 0.6 V/m up to 1,000 V/m (64 dB) makes the probe ideal for
measuring exposure in both the general public and the occupational
environment.
PROPERTIES
The probe is designed with mechanical and electrical properties ideal for
field use. The probe head is made of foam material to provide effective
protection for the sensors, while having excellent RF characteristics.
The electric destruction limit of 1,600 V/m for continuous wave signals is
several times higher than any of the human safety limit values.
CALIBRATION
The probe is calibrated at several frequencies. The correction values are
stored in an EPROM in the probe and are automatically taken into
account by the NBM instrument. Calibrated accuracy is thus obtained
regardless of the combination of probe and instrument.