SU584336A1 - Method of measuring tape recorder starting period - Google Patents
Method of measuring tape recorder starting periodInfo
- Publication number
- SU584336A1 SU584336A1 SU7602336837A SU2336837A SU584336A1 SU 584336 A1 SU584336 A1 SU 584336A1 SU 7602336837 A SU7602336837 A SU 7602336837A SU 2336837 A SU2336837 A SU 2336837A SU 584336 A1 SU584336 A1 SU 584336A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- detonometer
- time
- control signal
- signal
- tape recorder
- Prior art date
Links
Landscapes
- Measurement Of Unknown Time Intervals (AREA)
Description
1one
Изобретение относитс к области приборостроени , в частности к аппаратуре магнитной записи и воспроизведени .The invention relates to the field of instrumentation, in particular to magnetic recording and reproducing apparatus.
Известны способы измерени времени пускового периода, основанные на воспроизве-дении контрольной сигналограммы с регистрацией интервала времени до момента установившегос значени определенного параметра воспроизводимого сигнала, например, длительности импульсов.Methods are known for measuring the time of the start-up period, based on reproducing the control signal with the recording of the time interval until the steady-state value of a certain parameter of the reproduced signal, for example, the duration of the pulses.
Ближайшим по технической супдности к предлагаемому изобретению вл етс способ измерени времени пускового периода аппаратов записи-воспроизведени звука, заключающийс в воспроизведении на испытуемом аппарате контрольной сигналограммы с записью сигнала посто нной частоты и измерении времени от момента пуска аппарата до момента установлени номинального значени коэффициента детонаций. Коэффициент детонаций отсчитываетс по шкале детонометра, подключенного к выходу испытз емого аппарата , а врем измер етс , например, секундомером .The closest in technical sufficiency to the present invention is a method for measuring the time of the start-up period of audio recording-reproducing apparatuses, which consists in reproducing on the test apparatus a control signal with the recording of a constant frequency signal and measuring the time from the start of the apparatus until the nominal detonation coefficient. The detonation coefficient is measured on the scale of the detonometer connected to the output of the apparatus under test, and time is measured, for example, by a stopwatch.
Однако данный способ обладает сушественным недостатком, ограничивающим его применение . Этот недостаток заключаетс в том, что пусковой период современных аппаратов записи.-воспроизведени звука составл ет несколько единиц секунд. В то врем , как современные детонометры, имеют врем установлени показаний до 10 с и более. В результате измер емый пусковой период, если он невелик , маскирз етс временем установлени показаний детонометра и достаточна точность измерений не может быть обеспечена.However, this method has a serious drawback that limits its use. This drawback lies in the fact that the start-up period of modern recording devices. Sound reproduction is several seconds. At the same time, modern detonometers have a readout time of up to 10 s or more. As a result, the measured starting period, if it is small, is masked by the time it takes to establish the readings of the detonometer and sufficient measurement accuracy cannot be ensured.
Целью насто щего изобретени вл етс повышение точности и расширение диапазона измерений.The purpose of the present invention is to improve the accuracy and the expansion of the measurement range.
Поставленна цель достигаетс тем, что выходной синал испытуемого магнитофона имитируют сигналом от вспомогательного генератора с частотой, равной средней частоте контрольного сигнала, затем через фиксируемый интервал времени с момента включени магнитофона на воспроизведение контрольной сигналограммы замен ют имитирующий сигнал на воспроизводимый контрольный. На чертеже изображена блок-схема устройства реализующего способ измерени времени пзскового периода магнитофона.The goal is achieved by simulating the output signal of the tape recorder with a signal from an auxiliary generator with a frequency equal to the center frequency of the control signal, then, after a fixed time interval from the moment the tape recorder was turned on, the simulated signal is replaced with a reproducing control signal. The drawing shows a block diagram of a device implementing a method for measuring the time of the recording period of a tape recorder.
Устройство состоит из вспомогательного генератора I, испытуемого магнитофона 2, детонометра 3 и реле времени 4.The device consists of an auxiliary generator I, a test tape recorder 2, a detonometer 3 and a time relay 4.
Перед включением магнитофона 2 на вход детонометра 3 от вспомогательного генератора подают сигнал с частотой, равной средней частоте контрольного сигнала, и после установлени показаний детонометра включаютBefore turning on the tape recorder 2, a signal with a frequency equal to the average frequency of the control signal is sent to the input of the detonometer 3 from the auxiliary generator, and after the readings of the detonometer are set,
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7602336837A SU584336A1 (en) | 1976-03-23 | 1976-03-23 | Method of measuring tape recorder starting period |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7602336837A SU584336A1 (en) | 1976-03-23 | 1976-03-23 | Method of measuring tape recorder starting period |
Publications (1)
Publication Number | Publication Date |
---|---|
SU584336A1 true SU584336A1 (en) | 1977-12-15 |
Family
ID=20653105
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU7602336837A SU584336A1 (en) | 1976-03-23 | 1976-03-23 | Method of measuring tape recorder starting period |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU584336A1 (en) |
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1976
- 1976-03-23 SU SU7602336837A patent/SU584336A1/en active
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