SU1307445A1 - Method of measuring delay of second pulse in periodic sequence of double pulses - Google Patents

Abstract

The invention relates to the field of measurement technology and can be used to measure the delay of pulses in communication lines and when calibrating napHbfx pulse generators. The method allows to increase the measurement accuracy. In order to implement the method, a digital frequency meter is connected to a source of paired pulses. By changing the follow-up period, pulses and measuring the follow-up period in a mode without averaging, the value of the delay is determined by a constant value in the series of readings indicated by the frequency meter. : about 4 cl

Description

The invention relates to a measurement technique and can be used to measure the delay of pulse signals in communication lines, as well as when calibrating a pair of pulse generators.

The circuit of the invention is an increase in the measurement accuracy by excluding the setting of the period of the following pair of pulses on the scale on the oscillo graph screen.

The method is carried out as follows.

The source of paired pulses with an adjustable follow frequency is connected to the input of a digital frequency meter, for example, 43-54.

The digital frequency meter is set to a period measurement mode without averaging.

The initial pulse frequency is set at a much shorter measurement time of the frequency counter.

If the ratio of the measurement time determined by the type and mode of operation of the frequency meter to the period of paired pulses is an integer on the reading device of the frequency meter, the values of the time interval between any two pulses in the sequence are displayed.

Compiled by V.Vasilyev Editor N, Kishtulinets Tehred I.Popovich, Proofreader A.Obruchar

Order 1630/48 Circulation 371 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

If this is a noninteger relation. Tov. There is no synchronization of the frequency meter with the source, the displayed values change.

Gradually changing the pulse frequency, the value of a constant reference is determined. This count corresponds to the delay of the second pulse and does not depend on the period of the next 10, which only determines the varying values of the time intervals between the second pulse and the first pulse of the next pair.

Claims (1)

 5 claims The method of measuring the delay of the second pulse in a periodic sequence of paired pulses, which consists in changing the period of the pair of pulses and determining the delay according to the frequency meter readings, characterized in that, in order to improve the accuracy,   Reni, set and change period The following steps are carried out within, which are known to be shorter than the duration of the measurement cycle of a digital frequency meter operating in the period measurement mode without averaging, and the delay is determined by the constant value in the series of period readings measured by the frequency meter.