A.H. Systems SAS-551 Operation Manual - Page 9

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A.H. Systems Model SAS-551 Passive Monopole Antenna

CALCULATIONS

EMISSIONS TESTING

Individual calibration data for the passive monopole antenna is supplied 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:

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