A.H. Systems PAM-0118 Panduan Pengoperasian - Halaman 9

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A.H. Systems Model PAM-0118 Pre-Amplifier

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 dBµV to convert to field strength in dBµV/m.

IMMUNITY TESTING

For Immunity measurements, the generated electric field strength can be

calculated by:

REV B

FS = Field Strength in dBµV/m

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