RE: lug-bg: About modmes

[bkrosnov@xxxxxxxxx (Boyan Krosnov)]

Hi,
Pyrwo ne mojesh da merish nishto oswen otnoshenie na niwa, otnoshenie na
moshtnosti i t.n. w dB

Mojesh da merish moshtnost w dBm koeto e neshto drugo, plz ne byrkajte tezi
edinici.
Mnogo modemi imat Margin pokazanie w dB koeto oznachawa otnoshenieto m/u
tekushtata moshtnost na signala i moshtnostta dostatychna za osyshtestwqwane
na nqkakwa wryzka izobshto.
W decibeli mojesh da merish i zatihwane na liniq.

dB za otnoshenie na moshtnosti se smqta taka
A[dB]=10*lg(p1/p2)
za moshtnost
P[dBm]=10*lg(p/1mW)

Regards,

--
Boyan Krosnov (http://www.nat.bg/~bkrosnov)
Network Administrator
Lirex BG Ltd. 

> -----Original Message-----
> From: gggg ggg [mailto:gashti_dolu@xxxxxxxxx]
> Sent: Friday, November 10, 2000 12:39 AM
> To: lug-bg@xxxxxxxxxxxxxxxxxx
> Subject: Re: lug-bg: About modmes
> 
> 
> kato se zagovori za LL lines , niakoi da znae kakuv e
> standarta na BTK v decibeli [dB] za LL , zashtoto imam
> edna naeta s dve modem4eta,koito pokazvat sastoianieto
> na liniata v decibeli ?
> 
> g.
> 
> 
> > 
> > > Nqkoj puskal li e wrazka po dwa modema po kabel
> > (bez da minawa prez BTK 
> > t.e.
> > > centrala) direktno?
> > 
> > >
> >
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