| Home » Diverses rubriques » Archive forum sujets |
|
|
|
|
Re: dBr ?
|
|
Ce sont des dB par rapport a ne reference...qu'il faut connaitre (dB relatif)
from:
Hubert (near NICE France)
SCIENCES "POUR TOUS"
http://perso.libertysurf.fr/spt06/home.htm
Numéro de l'article: 74105
| De: HPSPT
| Date: 2002-04-20 14:26:12
|
|
|
dBr ?
|
|
Que signifie dBr dans certaines spécifications techniques?
matériel télécom) Je connais dBm ou dB tout court ...
GS
Numéro de l'article: 74099
| De: Gérard Samouillan
| Date: 2002-04-20 15:11:36
|
|
|
Re: dBr ?
|
|
Bj
selon une doc télécom Française:
dBr : dB relatifs à un niveau de transmission nul
--------------------------------------
http://www.it.kth.se/~e93_mda/encyclopeadia/d.html
dBr
An dB scale which gives the relative power relation between a measured power
strength and a suitable reference signal's power strength. It is suitable to
indicate difference as opposed to an actual power strength. The scale
follows the relation
Pm
dBr = 10 * log --
10 Pr
Pm = power measured at the output of the system
Pr = power of a suitable input (reference) signal to the system
-----------------------------------------------
http://www.harada-sound.com/sound/handbook/basicterms.html
dBr: an arbitrary reference level, which much be specified
Numéro de l'article: 74107
| De: jean francois chevalier
| Date: 2002-04-20 16:51:23
|
|
|
