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time domain reflectometer [1 record]
Record 1 - internal organization data 2005-03-18
Record 1, English
Record 1, Subject field(s)
- Measuring Instruments (Engineering)
- Telecommunications
- Applications of Electronics
Record 1, Main entry term, English
- time domain reflectometer
1, record 1, English, time%20domain%20reflectometer
correct
Record 1, Abbreviations, English
- TDR 2, record 1, English, TDR
correct
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
An instrument that measures the electrical characteristics of wideband transmission systems, subassemblies, components, and lines by feeding in a voltage step and displaying the superimposed reflected signals on an oscilloscope equipped with a suitable time-base sweep. 2, record 1, English, - time%20domain%20reflectometer
Record number: 1, Textual support number: 1 CONT
Time-domain reflectometer ... finds discontinuities and other faults in transmission lines. 3, record 1, English, - time%20domain%20reflectometer
Record number: 1, Textual support number: 1 OBS
Reference for the entry term: change 63 to Canadian Forces Publication A-PD-123-004/PQ-011. 4, record 1, English, - time%20domain%20reflectometer
Record number: 1, Textual support number: 2 OBS
Reference: change 63 to Canadian Forces Publication A-PD-123-004/PQ-001. 4, record 1, English, - time%20domain%20reflectometer
Record 1, Key term(s)
- time domain reflectometre
- time-domain reflectometer
- time-domain reflectometre
Record 1, French
Record 1, Domaine(s)
- Instruments de mesure (Ingénierie)
- Télécommunications
- Applications de l'électronique
Record 1, Main entry term, French
- réflectomètre temporel
1, record 1, French, r%C3%A9flectom%C3%A8tre%20temporel
correct, masculine noun
Record 1, Abbreviations, French
- TDR 2, record 1, French, TDR
masculine noun
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Le réflectomètre temporel (TDR = Time Domain Reflectometer) est en fait un radar unidimensionnel en boucle fermée [...] Le signal est fourni par un générateur de saut à flanc très raide (très faible temps de montée) qui envoie un saut de tension d'amplitude Ei dans la ligne à étudier, via un té d'échantillonnage. Le signal réfléchi, d'amplitude Er, vient se combiner dans le té avec le signal émis, et est observé à l'aide d'un oscilloscope à échantillonnage. Le temps de retour du signal réfléchi est fonction de la distance de l'obstacle et de la vitesse de propagation dans la ligne. L'axe horizontal de l'oscilloscope est gradué directement en distance, et l'axe vertical représente la somme algébrique des signaux émis et réfléchis; on peut ainsi déterminer directement la nature et la valeur de l'obstacle, ainsi que sa distance par rapport à l'origine. 2, record 1, French, - r%C3%A9flectom%C3%A8tre%20temporel
Record 1, Spanish
Record 1, Textual support, Spanish
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