TERMIUM Plus®

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INDEX MODULATION [6 records]

Record 1 2022-08-12

English

Subject field(s)
  • Optics
  • Computer Graphics
  • Photography
CONT

… the diffractive characteristics of a polychromatic hologram can be adjusted by tuning the applied index modulation with respect to the recording parameters.

French

Domaine(s)
  • Optique
  • Infographie
  • Photographie

Spanish

Save record 1

Record 2 2013-10-03

English

Subject field(s)
  • Telecommunications Transmission
  • Remote Sensing
DEF

In angle modulation, with a sinusoidal modulating wave, the ratio of the frequency deviation to the frequency of the modulating wave.

French

Domaine(s)
  • Transmission (Télécommunications)
  • Télédétection
DEF

Dans le cas d'une modulation d'angle par une onde de modulation sinusoïdale, rapport de la déviation de fréquence à la fréquence de l'onde modulante.

OBS

indice de modulation : terme uniformisé par le Comité d'uniformisation de la terminologie spatiale (CUTS).

Spanish

Campo(s) temático(s)
  • Transmisión (Telecomunicaciones)
  • Teledetección
DEF

En la modulación de frecuencia, y en el caso particular en que la onda moduladora es sinusoidal pura, razón entre la desviación de frecuencia de la onda portadora y la frecuencia de la onda moduladora.

Save record 2

Record 3 2012-02-16

English

Subject field(s)
  • Vacuum Tubes (Electronics)
CONT

The modulation index can be determined by measuring the actual values of the modulation voltage and the carrier voltage and computing the ratio.

OBS

grid-cathode driving voltage; modulation voltage: terms officially approved by the Electronics and Telecommunications Terminology Committee.

French

Domaine(s)
  • Tubes et lampes (Électronique)
OBS

tension d'attaque grille-cathode; tension de modulation : termes uniformisés par le Comité d’uniformisation des termes de l’électronique et des télécommunications (CUTEL).

Spanish

Campo(s) temático(s)
  • Tubos de vacío (Electrónica)
Save record 3

Record 4 - external organization data 2009-07-30

English

Subject field(s)
  • Compartment - ISO/IEC JTC 1 Information Technology Vocabulary
Universal entry(ies)
06.01.45 (19762)
ISO/IEC standard entry number
DEF

form of two-condition frequency shift keying with modulation index equal to 0, 5, in which variations are continuous [IEC 60050-702, 702-06-49]

OBS

minimum shift keying; MSK: term, abbreviation and definition standardized by ISO/IEC [ISO/IEC 19762-4:2008].

French

Spanish

Save record 4

Record 5 1996-08-18

English

Subject field(s)
  • Radiotelephony
CONT

On the voice channel, one of the three tones that modulate the carrier at a low modulation index is used for supervision. These tones are centered at 6 kHz and are termed supervisory audio tones(SAT). The SAT is added to the voice transmission by a cell site. The three audio frequencies used are 5, 970, 6, 000 and 6, 030 Hz.

French

Domaine(s)
  • Radiotéléphonie

Spanish

Save record 5

Record 6 1991-04-25

English

Subject field(s)
  • Computer Graphics

French

Domaine(s)
  • Infographie

Spanish

Save record 6

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