In recent years, the widespread use of radio-controlled watches and access to accurate time through NTP servers have made it much easier to obtain highly precise time. As a result, application systems in fields such as finance, traffic management, power control, security, and sports now rely heavily on accurate timekeeping. These systems typically require numerous terminal devices to be equipped with correct time for data input and output processes. To meet these requirements, Epson (EPSON) has introduced a real-time clock module that includes an internal quartz crystal oscillator operating at a high-stable frequency.
The RX-4803SA real-time clock module is one of the key products in Epson’s lineup. It features a TCXO (Temperature Compensated Crystal Oscillator) digital real-time clock with high precision and temperature compensation capabilities. This includes models like RX-4803SA/LC, RA4803SA (with serial interface, referred to as "4803 real-time clock module"), and RX-8803SA/LC, RA8803SA (with I2C interface, referred to as "8803 real-time clock module"). These modules maintain a frequency accuracy of ±3.4×10â»â¶ across a wide temperature range of -40°C to +85°C, which translates to a monthly drift of only 9 seconds. On a daily basis, the average time error remains below ±0.3 seconds.
Even though these modules offer excellent time accuracy, some customers may still need fine-tuning for minor errors under one second. The real-time clock function is generated using a 32.768 kHz quartz crystal, which is divided down to produce the desired timing signal. For applications requiring synchronization across multiple devices, it's essential to adjust any small time discrepancies to ensure all devices are aligned. Both the 4803 and 8803 real-time clock modules support adjustments for errors less than one second to meet this demand.
Many of Epson’s real-time clock modules include a RESET function that allows software-based time correction. However, software-based adjustments can introduce time skew due to processing delays, which may be problematic for users who require precise synchronization. To address this issue, the 4803 and 8803 modules are equipped with an ERST (External Reset) function that enables hardware-based time adjustment, ensuring greater accuracy and reliability.
Another notable model is the RX8803SA real-time clock module. Before diving into its features, it's worth understanding what a radio-controlled watch is. A radio-controlled watch consists of an atomic clock and a radio receiver system. It receives time signals from national time-granting centers and displays the correct time via the CPU. These watches have an error margin of less than one second over 300,000 years, making them extremely accurate. In essence, they automatically update their time after receiving a standard time signal via radio waves.
Radio-controlled watches represent the fifth generation of timekeeping technology, following the evolution from hourglasses and sundials to mechanical clocks and quartz watches. Their development marks another significant milestone in the history of human timekeeping, offering unprecedented accuracy and convenience.
The RX-4803SA real-time clock module is one of the key products in Epson’s lineup. It features a TCXO (Temperature Compensated Crystal Oscillator) digital real-time clock with high precision and temperature compensation capabilities. This includes models like RX-4803SA/LC, RA4803SA (with serial interface, referred to as "4803 real-time clock module"), and RX-8803SA/LC, RA8803SA (with I2C interface, referred to as "8803 real-time clock module"). These modules maintain a frequency accuracy of ±3.4×10â»â¶ across a wide temperature range of -40°C to +85°C, which translates to a monthly drift of only 9 seconds. On a daily basis, the average time error remains below ±0.3 seconds.
Even though these modules offer excellent time accuracy, some customers may still need fine-tuning for minor errors under one second. The real-time clock function is generated using a 32.768 kHz quartz crystal, which is divided down to produce the desired timing signal. For applications requiring synchronization across multiple devices, it's essential to adjust any small time discrepancies to ensure all devices are aligned. Both the 4803 and 8803 real-time clock modules support adjustments for errors less than one second to meet this demand.
Many of Epson’s real-time clock modules include a RESET function that allows software-based time correction. However, software-based adjustments can introduce time skew due to processing delays, which may be problematic for users who require precise synchronization. To address this issue, the 4803 and 8803 modules are equipped with an ERST (External Reset) function that enables hardware-based time adjustment, ensuring greater accuracy and reliability.
Another notable model is the RX8803SA real-time clock module. Before diving into its features, it's worth understanding what a radio-controlled watch is. A radio-controlled watch consists of an atomic clock and a radio receiver system. It receives time signals from national time-granting centers and displays the correct time via the CPU. These watches have an error margin of less than one second over 300,000 years, making them extremely accurate. In essence, they automatically update their time after receiving a standard time signal via radio waves.
Radio-controlled watches represent the fifth generation of timekeeping technology, following the evolution from hourglasses and sundials to mechanical clocks and quartz watches. Their development marks another significant milestone in the history of human timekeeping, offering unprecedented accuracy and convenience.Carbon Fiber Insulation And Heat Insulating Board
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