Central Master Clock Class A 2U

1. Automatically receives Beidou (expandable to LTE-4G) time source signals; can provide time to secondary servers and other network devices.
2. Built-in temperature-compensated crystal oscillator, expandable to oven-controlled crystal oscillator as per user requirements.
3. Interface method: Standard RS-422/485.
4. Vacuum fluorescent display (VFD) shows clock source information, signal strength, time and date, data validity, and error status.
5. 8-channel RS-485 time synchronization interface, supports Modbus protocol.
6. Features fault alarm function and allows querying alarm information on the display.
7. Standard timing accuracy: ≤±1S/year.
8. Self-timing accuracy: ≤±0.001S/day.
9. Synchronization error: ≤1~10ms.
10. Expandable redundant primary/backup power supply: AC220V ±20%, 50HZ±10%.
11. Power consumption: ≤200W.
12. Ambient temperature: -10℃ to +65℃  ;   
13. Relative humidity: 30% to 95%.
14. Mean time between failures (MTBF) ≥80,000 hours.
15. Can support up to ≤3,000 subsidiary clocks.
16. Can connect to ≤3,000 secondary master clocks.
17. Cooling method: Natural air cooling.
18. Uses 2U, 19-inch standard rack-mounted installation.