Atec Narda-EHP-200 - Manual (Page 2)

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Electric and Magnetic Field Measurement
EHP-200 Field Analyzer
Applications
BROADCASTING SURVEILLANCE
The EHP-200 is particularly useful in measuring the actual
fields generated by long, medium and short wave broadcast
transmitters, to ensure safety around the sites of large anten-
nas, to control the transmitted power in the actual radiation
direction, to test the functionality of the transmitting anten-
nas and to identify the borders between near and far field
regions.
WAVE IMPEDANCE
As a unique feature, the PC program calculates the field wave
impedance by dividing the total value of the E-field by that of
the H-field. This method is particularly suitable for evaluating
the non-linear, scattered near-field region of large broadcast
antenna systems.
FIELDS GENERATED BY METAL DETECTORS AND RFID’S
Fields generated by a number of devices using RF to detect
the presence of metals, to identify objects, anti-theft systems
etc. can now be accurately and easily measured.
EHP-200 Control Software
FOR WINDOWS™ OPERATING SYSTEMS
All measuring functions are user-programmable: Resolution
Bandwidth Filter, center frequency and frequency span, pre-
amplifier, measuring units, etc.
The Marker function is used to measure the frequency and
amplitude. It features Highest, Next and Previous Peak func-
tions, while the Marker Center function sets the display center
frequency at the current marker frequency value.
The Marker also features the Delta Peak function for relative
measurements. The Wide Band field value is calculated with
reference to the measured frequency span.
To immediately evaluate the measured levels, Limit Lines
can be created and displayed on the graphical window. The
measured data can be saved as either text or bitmap, and the
limits can also be saved and recalled.
Blue Line: total Field / Green Line: X-axis
Cyan Line: Y-axis / Magenta Line: Z-axis