Master Clock Type A 1U

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 based on 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 service interface, supports Modbus protocol;
6. Features fault alarm function with alarm information queryable 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 slave clocks;
16. Connect to secondary master clocks: ≤3,000 units;
17. Cooling method: Natural air cooling;
18. Uses 1U, 19-inch standard rack-mounted installation.