„Certifikált kronométer” változatai közötti eltérés
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23. sor:
A COSC laboratóriumaihoz a pontos időt két atomóra biztosítja, amiket [[Global Positioning System|GPS]]-szel szinkronizálnak.
{| class="wikitable"
|+ '''COSC Standards'''
! Mechanical!! Quartz
|-
| Average daily rate: −4/+6<ref>this is the average rate over the first ten testing days.</ref>
| Average daily rate at 23 °C: ±0.07
|-
| Mean variation in rates: 2<ref>this figure shows if a watch tends to run fast or slow; a good quality watch will be consistent, whether it is fast, slow or correct.</ref>
| Rate at 8 °C: ±0.2
|-
| Greatest variation in rates: 5<ref>This is the largest difference between any two day's readings in a single position.</ref>
| Rate at 38 °C: ±0.2
|-
| Difference between rates in H & V positions: −6/+8<ref>calculated by subtracting the average of the rates in the vertical (V) position (first and second days) from the average of the rates in the horizontal(H) position (ninth and tenth days).</ref>
| Rate stability: 0.05
|-
| Largest variation in rates: 10<ref>the largest difference between the mean daily rate (see test number 1) and any individual rate during the first 10 days of positional testing.</ref>
| Dynamic rate: ±0.05
|-
| Thermal variation: ±0.6<ref>the temperature error of the movement, expressed in seconds/degree.</ref>
| Temporary effect of mechanical shocks: ±0.05
|-
| Rate resumption: ±5<ref>figure obtained by subtracting the average mean daily rate of the first two days of testing from the mean daily rate of the last test day.</ref>
| Rate resumption: ±0.05
|-
| n/a
| Residual effect of mechanical shocks: ±0.05;
200 shocks equivalent to 100 [[Gravity of Earth|g]] (981 m/s², 3,217 ft/s²)
|}
::==Forrás==
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