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Re: Using Socket to read wireless LAN router info page [message #52104 is a reply to message #52071]

Tue, 09 January 2007 02:43

Carsten Lechte
Messages: 124
Registered: August 2006

Senior Member

Braedley wrote:
> about the signal to noise ratio (SNR), 20dB is either sufficient, or
> more than enough, depending on if it's a voltage ratio or a power
> ratio.

A minor point: dB ratings for a certain process do not depend
on what quantity (amplitude or power) is being measured.
A 20 dB amplifier has an amplification factor of 100 in power
and an amplification factor of 10 in amplitude:

dB = 10 log10( power1/power0) or
dB = 20 log10( amplitude1/amplitude0)

This can be confusing at first.
See http://en.wikipedia.org/wiki/Decibel#Definition

chl

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[Message index]

		Using Socket to read wireless LAN router info page By: Andrew Cool on Sun, 31 December 2006 21:09
		Re: Using Socket to read wireless LAN router info page By: Carsten Lechte on Tue, 09 January 2007 02:43
		Re: Using Socket to read wireless LAN router info page By: Braedley on Wed, 17 January 2007 16:12
		Re: Using Socket to read wireless LAN router info page By: Braedley on Mon, 08 January 2007 19:36
		Re: Using Socket to read wireless LAN router info page By: Allan Whiteford on Thu, 11 January 2007 08:20

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