Digital time error measuring arrangement

Details Digital time error measuring arrangement Digital time error measuring arrangement

1974-04-05

1976-03-30

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

G04D 712

Patent

active

039465926

ABSTRACT:
The invention resides in an improved time error measuring device or test bench for watches. The device includes a sensing microphone for sensing the stepping movement of the watch under test and in the form of a series of electric signal pulses. It further includes a range selector adapted for selecting a proper range depending upon the thus sensed stepping signal pulse series. Time error measuring means is utilized for detecting occasional time error of the watch by comparing the sensed stepping pulses with a standard clock pulse series and at the precision attributed to a selected measuring range. All these operations may be carried out in a fully automatic manner.

REFERENCES:
patent: 3370456 (1968-02-01), Jucker
patent: 3777547 (1973-12-01), Izumi
patent: 3805585 (1974-04-01), Palinkas
patent: 3811314 (1974-05-01), Anouchi

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