TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 OBS

decrement : The ratio of the amplitudes of an underdamped harmonic motion during two successive oscillations. Also known as damping factor; numerical decrement.  2, record 1, English, - energy%20decrement

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 OBS

décrément : Rapport de deux amplitudes maximales successives d'un système oscillatoire amorti.  2, record 1, French, - d%C3%A9cr%C3%A9ment%20d%27%C3%A9nergie

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

... for a mechanically dithered RLG [ring laser gyro], non-linearities(sidebands) appear in the input-output scale factor curve for an input rotation rate which is a harmonic of the dither frequency... There are two disadvantages to dithering. One is that the rotation rate periodically passes through zero where lock-in occurs. This results in a "random walk" angular position error. The other is that the vibration of the gyro body may affect other components or the gyro may be affected by other vibration sources. The laser gyro need not be mechanically dithered. The same result may be achieved by optical devices.  1, record 2, English, - mechanically%20dithered%20RLG

Record number: 2, Textual support number: 1 OBS

dither: To periodically tilt from side to side.  4, record 2, English, - mechanically%20dithered%20RLG

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

... for a mechanically dithered RLG [ring laser gyro], non-linearities(sidebands) appear in the input-output scale factor curve for an input rotation rate which is a harmonic of the dither frequency... There are two disadvantages to dithering. One is that the rotation rate periodically passes through zero where lock-in occurs. This results in a "random walk" angular position error. The other is that the vibration of the gyro body may affect other components or the gyro may be affected by other vibration sources. The laser gyro need not be mechanically dithered. The same result may be achieved by optical devices.  1, record 3, English, - mechanically%20dithered

Record number: 3, Textual support number: 1 OBS

dither: To periodically tilt from side to side.  2, record 3, English, - mechanically%20dithered

Record 3,  Textual support,  French

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

The [DFM] meter indicates the distortion factor, which is the ratio of the rms total distortion to the amplitude of the fundamental frequency, including harmonics.  2, record 4, English, - distortion%20factor

Record number: 4, Textual support number: 1 OBS

A common measurement is total harmonic distortion(thd) where the fundamental of a very low distortion sine-wave test signal is removed by a steep notch filter. The summed harmonics that remain are then measured as a voltage of the fundamental at the required test power of the amplifier.(When measured in this manner the term thd is not really correct since the distortion also has the amplifier noise added to it within the test passband. The correct term is distortion factor).(GRAEL, 1977, p. 326).  3, record 4, English, - distortion%20factor

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

[Dans le Teac AS M50] les taux de distorsion restent très faibles quelle que soit la puissance, et (...) la décroissance des amplitudes dans l'analyse du spectre de distorsion par harmoniques est régulière.  1, record 4, French, - taux%20de%20distorsion

Record 4,  Textual support,  Spanish