Latest Watches News Report: Test the accuracy of the watch
1. Circadian error (at SD): a 24-hour interval determined to accuracy of the table shows the quality of day and night with the first correction value and the second night in fact, the correction value comparison.
2. Diurnal variation error:
Is a variation of two adjacent clock error, also called on the poor. Reflect the stability of travel time tables.
3. The average diurnal error: error and with a day and night compared to the average error of several days and nights to find out the difference between average day and night to determine the error.
4. Circadian instantaneous value of the error: also called instantaneous deterioration.
Above the test interval in a day and night under the conditions tested, is that all are average.
Test Specifications:
1. Isochronous error:
24 hours a day is bad and deteriorating full string, location, number of the worst. (Symbol I) is the tightness of winding with different travel time error.
2. Position error:
Also called potential difference. Are different positions, the error occurs (symbol P)
3. Temperature error:
Also known as temperature coefficient, (symbol C), temperature of 36 degrees and 20 degrees, the deterioration is transient (36-20) divided by the difference obtained value for the temperature coefficient, that is, for every degree change in temperature error of the watch changes.
4. Composite Index (symbol N)
Is: N = I * 0.15 + P * 0.1 + C
Travel time of 8 major indicators:
1.I,
2.P,
3.C
4.N,
5. Continued walking,
6. Gap (full string and 24 hours after the swing)
7. Ping Li deviation (full string swing plane and the elevation difference)
8. Observation of the surface at
Earthquake Test:
Negative 0.1 - 1KG, 1M height, two position ==== falling body, concrete floor.
Method of measuring soil swing:
Take a screwdriver put there, to see the balance wheel arm-ended screwdriver distance.
Article Source: http://www.replicasinfo.com
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