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Epson RX8901CE Manual page 14

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頻率誤差 vs. 秒差(天) 換算
1 day
1 hours = 60 min
1 min
一天有幾秒?
24(hrs) × 60(min) × 60(sec) =
86,400(sec/day)
Epson爱普生频率组件即时时钟模块解决方案 ( 2022.07.28 大大通在線研討會 ) | 台灣愛普生科技股份有限公司
= 24 hrs
= 60 sec
頻率誤差 vs. 秒差(天)換算
ppm =
P
arts
1ppm = 1/1,000,000
1秒等於多少ppm?
1,000,000 ÷ 86,400(sec/day)
11.5
ppm
P
M
er
illion
= 1
sec/day
14

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