Glossary entry

anglais term or phrase:

within ±5 times the necessary bandwidth either side of the channel centre

français translation:

couvrant 5 fois la bande passante nécessaire de chaque côté du canal central

Added to glossary by Mélanie Chanat
Dec 18, 2007 10:35
16 yrs ago
anglais term

within ±5 times the necessary bandwidth either side of the channel centre

anglais vers français Technique / Génie Télécommunications Out-of band emissions
The complete sentence:
"For the purpose of this standard the out-of-band domain will be considered as the spectrum within ±5 times the necessary bandwidth either side of the channel centre but excluding the in-band signal."

The context:
Définition d'une émission hors-bande (masque spectral) dans le cadre d'une norme relative à des méthodes de mesure applicables aux émetteurs DRM

My question:
Est-ce que vous pourriez m'aider à comprendre cette phrase ?!! Merci beaucoup.

Mélanie

Proposed translations

6 minutes
Selected

couvrant 5 fois la bande passante nécessaire de chaque côté du canal central

largeur de couverture encadrant le bande de fréquences centrale
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3 KudoZ points awarded for this answer. Comment: "Merci beaucoup de votre traduction Francis, sans oublier les explications."
+1
7 minutes

See explanation below...

Suppose, for the sake of example, that the channel centre frequency is 500 MHz and that the necessary bandwidth is 20 MHz.

In that case, the 'out-of-band domain' they are seeking to define would extend [5 × 20 =] 100 MHz above [= +] and below [= –] the centre frequency, i.e. from 400 MHz up to 600 MHz.
Note from asker:
thank you for your nice explanation Tony, it seems now that everything is clear now ;-)
Peer comment(s):

agree DanielT : and excluding the 490-510 MHz range (in-band), if we consider the complete sentence
8 minutes
Thanks, Daniel! Indeed, good point.
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