A.H. Systems EHA-51B 운영 매뉴얼 - 페이지 8

{카테고리_이름} A.H. Systems EHA-51B에 대한 운영 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. A.H. Systems EHA-51B 14 페이지. Active monopole and loop antenna

A.H. Systems Model EHA-51B Active Monopole and Loop Antenna

GENERAL USE INSTRUCTIONS

The EHA-51B loop antenna is an active loop designed to perform magnetic

field and shielding effectiveness testing. The loop antenna has a balanced

Faraday shield to reduce the E-field response for a pure magnetic field

measurement.

Each antenna is individually calibrated per IEEE 291-1991 and comes with a

calibration certificate references the NIST traceable test equipment. Initially

the antenna comes with a 1 year calibration interval, however depending on

the type of use and standards that the antenna is being used, this interval can

be adjusted.

The calibration tables shown provide a listing of the frequency of operation

and its antenna factor in dB/m. The field strength is the receiver voltage in

dBV plus the antenna factor (refer to the antenna factor calibration) plus any

cable loss. When making a measurement, mount the antenna on an

appropriate mast or tripod with the plane of the loop antenna facing the DUT.

SHIELDING EFFECTIVNESS TESTING

Both the EHA-51B with the loop antenna element attached and the SAS-564

loop antenna can be used for shielding effectiveness testing. The EHA-51B is

used as the receive antenna and should be connect to an analyzer or

receiver, where the SAS-564 Loop antenna is a passive loop antenna used to

transmit.

 A.H. Systems inc. – Oct 2017

REV B