Atec Narda-HF0191 - Manual

NSTS 0209-E0238B-0.0 1 / 2 Subject to change
H-FIELD PROBE
HF0191
Measuring magnetic fields
from 27 MHz to 1 GHz
using instruments in the NBM-500 family
Occupational field exposure from radio
broadcasting, telecoms, industrial equipment
Isotropic (non-directional) measurement
Dynamic range 59 dB without changing
measurement range
The probe contains three orthogonally arranged coils 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 magnetic fields from 27 MHz to 1 GHz. This wide
frequency range for a magnetic field probe covers all the major areas of
electromagnetic field exposure that can occur in radio and TV
broadcasting, telecommunications, and in high frequency industrial
applications.
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 is above 20 A/m for continuous wave
signals, which is several times more 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.