A.H. Systems SAS-542 Panduan Pengoperasian - Halaman 10

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A.H. Systems SAS-542 Panduan Pengoperasian
A.H. Systems SAS-542 Biconical Antenna

CALCULATIONS

EMISSIONS TESTING
Individual calibration data for the log periodic antenna is supplied at appropriate
distances (3, and 10 meter) to comply with various emissions test requirements.
For emissions measurements, add antenna factor plus cable loss to receiver
reading in dBV to convert to field strength in dBV/meter.
Field Strength(dBuV/m) = SA(dBuV) + AF(dB/m) + cable loss (dB)
IMMUNITY TESTING
For Immunity measurements, the generated electric field strength can be
calculated by:
© A.H. Systems inc. –REV C
SA = Spectrum Analyzer or Receiver voltage reading
AF = Antenna Correction Factor
CL = Cable Loss in dB
FS = Approximate Field Strength in (V/m)
P = Power in watts
g = Numeric Gain
d = Distance in meters
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