A.H. Systems AK-285R Betriebshandbuch - Seite 5

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A.H. Systems AK-285R Shielding Effectiveness Antenna Kit

GENERAL INFORMATION

INTENDED PURPOSES

This equipment is intended for general laboratory use in a wide variety of industrial

and scientific applications, and designed to be used in the process of measuring

high levels of electromagnetic Radio Frequency (RF) energy. It is the responsibility

of the user to assure that the device is operated in a location which will measure

the radiated energy such that it will not cause injury and will not violate regulatory

levels of electromagnetic interference.

GENERAL DESCRIPTION

The A.H. Systems AK-285R and AK-285T antenna kits includes all of the required

antennas needed to perform shielding effectiveness. Each component has a

specific storage compartment in the carrying case therefore, loss and breakage

are virtually eliminated. Cables, a tripod with azimuth and elevation head, and a

tripod carrying case accompany each antenna kit. Each of the antennas, and

cables, are provided with calibrations when connected to a 50-ohm input receiver

or spectrum analyzer.

Each of the E-field antennas mounts directly to the tripod azimuth and elevation

head. The azimuth and elevation head allows the operator to vary the antenna

azimuth (direction) and tilt the antenna up and down. The antenna polarity can

also be rotated (horizontal or vertical).

Cables and an adapter are provided to connect each antenna and probe to either

a BNC or N type connector on the receiver.

To obtain the field strength of the signal being measured, the operator must add

the receiver reading in dBuV, the antenna factor in dB, and the cable attenuation in

dB. This yields the field strength in dBuV/m. Calibrations for the E-field antennas

are supplied at appropriate distances (1, 3, and 10 meter) to comply with various

specification requirements.

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