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INSTRUCTION MANUAL
AL-RE101
LOOP ANTENNA
SECTI ON 4
-
USING YOUR AL-RE101 LOOP ANTENNA
1912 1 E l T o ro R d
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Si l vera do, Ca lifo rni a 9 26 76
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(9 49) 459 -96 00
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co m-p o wer. com
Rev101617
The antenna conversion factor (in dBpT/
μ
V units) is to be added to the measured
value (in dB
μ
V) to obtain the corrected magnetic field strength value, or flux
density (in dBpT).
EXAMPLE CALCULATION #1:
An EUT emission is identified at a frequency of
500 Hz
, with a measured value of
40 dB
μ
V
, or
100
μ
V
on a measurement instrument having a nominal input
impedance of 50
Ω
.
Using the table shown in Figure 4, the 50
Ω
antenna conversion factor at 500 Hz is
57.7 dBpT/
μ
V; therefore:
The magnetic field strength, or flux density, is 97.7 dBpT.
=
+
57.7
dBpT/μV
40.0
dBμV
97.7
dBpT
EQUATION (1)
Magnetic
Field Strength
(in dBpT)
=
Measured
Value
(in dBμV)
Antenna
Conversion
Factor
(in dBpT/μV)
+
