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Mugless
Australia
11 Posts |
 Posted - 06/20/2020 : 22:02:34
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Hi Everyone,
Please could someone explain the units in Table mode?
Here, -50 dBm corresponds to 10 nW.
As far as I can work out from the meter, 0 dBm = 100,000 mW/m2, -50 dBm = 1.0 mW/m2.
Therefore -50 dBm corresponds to 1.0 mW/m2, corresponds to 10 nW, corresponds to 0.01 mW.
Therefore there seems to be an assumption built-in to the Power in Table Mode which is that of an area of 0.01 m2.
Is this correct?
Thank you,
Douglas
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| Reply #1
EmfDev
2250 Posts |
Posted - 06/22/2020 : 10:00:01
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| That is correct, the power corresponding to -50 dBm is 10nW and is equal to 0.00001 mW and not 0.01 mW. and 0.00001mW when converted to density becomes 1mW/m2 or 100nW/cm2. |
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| Reply #2
Mugless
Australia
11 Posts |
Posted - 06/22/2020 : 16:14:32
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Sorry, I realized that I muddled mW and microW.
I should have said:
Therefore -50 dBm corresponds to 1.0 mW/m2, corresponds to 10 nW, corresponds to 0.01 microW, corresponds to 0.00001 mW
Therefore there seems to be an assumption built-in to the Power in Table Mode which is that of an area of 0.00001 m2 = 0.1 cm2.
Your answer, though, is consistent and makes sense. i understand that this is related to another thread, in which you mention "gain" and other parameters.
Thanks and regards,
Doug |
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RF Table mode and units
