| 摘要 |
FIELD: measurement equipment.SUBSTANCE: method of recirculating conversion of short single time intervals into digital code implies recirculation of start pulse of the time interval being converted in a start recirculator with the recirculation period Tst and calculation of the number p of the start pulse recirculation up to the moment the stop pulse of the time interval being converted comes. At that as per the invention, the delay line which sets the recirculation period of the start recirculator is made t-tapped with the delay discreteness between the taps being equal to the conversion discreteness ?, the condition m·?=Tst shall be met; in each recirculation the fixation in (m-1) shall be performed - in the input memory register for matches of recirculating start pulse with the stop pulse, by the number (m-1) - the input memory register, which is the first to record the match moment, the conversion result ? (variation range ??[1÷(m-1)] is determined, and the duration of the time interval being converted is calculated as tx=(n-m+?+?)·?, where ? - digital value of the start pulse duration of the time interval being converted.EFFECT: increased conversion speed.1 dwg |
