DHD systems require an external NTP server to fully operate.
Learn how to
configure Windows as NTP time server
XC3/XD3/XS3 - real-time clock (RTC) support for timekeeping
Firmware 10:
XC3/XD3/XS3 Cores with firmware version 10.2.x
XC3/XD3 Cores with firmware version 10.1.x
XC3/XD3 Cores with firmware version 10.0.x
Firmware 9:
Cores with firmware version 9.1.x and 9.2.x
Cores with firmware version 9.0.x
List of supported languages
Firmware 8:
Series 52 XC2/XD2/XS2 Cores
Series 52 XC/XD/XS Cores