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Chapter 5 Tutorial
Attributes of AC Signals
5
For a sine wave into a 50
load, the following table relates dBm to voltage.
For 75
or 600
loads, use the following conversions.
dBm (75
) = dBm (50
) – 1.76
dBm (600
)
= dBm (50
) – 10.79
dBm RMS Voltage Peak-to-Peak Voltage
+23.98 dBm 3.54 Vrms 10.00 Vpp
+13.01 dBm 1.00 Vrms 2.828 Vpp
+10.00 dBm 707 mVrms 2.000 Vpp
+6.99 dBm 500 mVrms 1.414 Vpp
3.98 dBm 354 mVrms 1.000 Vpp
0.00 dBm 224 mVrms 632 mVpp
-6.99 dBm 100 mVrms 283 mVpp
-10.00 dBm 70.7 mVrms 200 mVpp
-16.02 dBm 35.4 mVrms 100 mVpp
-30.00 dBm 7.07 mVrms 20.0 mVpp
-36.02 dBm 3.54 mVrms 10.0 mVpp
-50.00 dBm 0.707 mVrms 2.00 mVpp
-56.02 dBm 0.354 mVrms 1.00 mVpp
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