Manual SPECTRAN V5
© Aaronia AG 2016 | www.aaronia.com
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TABLES
For example, should you be using our 20dB attenuator (option), you would extract those rows
from the table whose dBm values are 20dB higher, for example, -10dBm instead of -30dBm.
As a different example, should you be using an antenna with 24dBi gain, you would use those
values 19dB lower than the actual reading ((24dBi minus 5dBi [as 5dBi gain is already included
in the calculated table values]). For example: -43dBm instead of -24dBm.
If you were using a cable with 5dBi damping, you would need to refer to those values 4dB
higher than the measured value (5dB minus 1dB [as 1dB damping is already included in the
calculated table values]).
That is -24dBm in place of -28dBm.
TIP
: Even in case you do not know the frequency of the signal source, you can still
achieve a comparatively exact field strength measurement by simply using the „Lambda
X“ column. This column presents a weighted average of all possible frequencies be-
tween 900MHz and 2.4GHz, still giving you an accuracy of approxi/-4dB. That is
still significantly better than the inherent inaccuracy of various rudimentary instruments
for field strength measurement available from third parties. The frequency range from
900MHz to 2.4GHz spans a large variety of typically interesting signal sources – for
example, all cellular phone networks (GSM900, GSM1800, UMTS) and the respective
phones, as well as 2.4GHz WLan and microwave ovens.
Table 2: Conversion from W/m² to μW/cm² and mW/cm²
0.000 001 W/m²
0.000 1 µW/cm²
0.000 000 1 mW/cm²
0.000 01 W/m²
0.001 µW/cm²
0.000 001 mW/cm²
0.000 1 W/m²
0.01 µW/cm²
0.000 01 mW/cm²
0.001 W/m²
0.1 µW/cm²
0.000 1 mW/cm²
0.01 W/m²
1 µW/cm²
0.001 mW/cm²
0.1 W/m²
10 µW/cm²
0.01 mW/cm²
1 W/m²
100 µW/cm²
0,1 mW/cm²
Table 3: Conversion from μW/cm² to V/m and A/m
0.000 1 µW/cm²
0.019 4 V/m
0.000 051 5 A/m
0.001 µW/cm²
0.061 4 V/m
0.000 162 A/m
0.01 µW/cm²
0.194 V/m
0.000 515 A/m
0.1 µW/cm²
0.614 V/m
0.001 62 A/m
1 µW/cm²
1.94 V/m
0.005 15 A/m
10 µW/cm²
6.14 V/m
0.016 2 A/m
100 µW/cm²
19.4 V/m
0.051 5 A/m
