Network Time Server NTS

 

Network Time Server NTS

Technical Data

Time server:

NTP V4 (fully V3 compatible), RFC 1305 (port 123)
SNTP (UDP), RFC 2030 (port 123)
TIME (TCP/UDP, RFC 868 (port 37)
DAYTIME (TCP/UDP), RFC 867 (port 13)
Max. number of NTP and SNTP requests  per second: typically 250
Modes: Server, Broadcast, Multicast

Network Interface:

10BaseT / 100BaseTX (IEEE 802.3)
Auto-negotiation / manual
Connector: RJ-45

IP configuration:

IPv4: static IP
IPv6: DHCPv6, autoconfig, static IP

Synchronization output:

DCF (UTC) or pps (configurable)

Synchronization input:

DCF 4500 / GPS 4500 (output for GPS 4500 power supply available) / NTP

LED displays:

LAN link, LAN speed / network activity, time synch. status, power supply, alarm, DCF in, init (initialization)

DC Output:

20 VDC, max. 100 mA (for power supply of a GPS receiver)

Power supply:

External mains supply included in delivery 100 - 240 VAC / 50-60 Hz / max. 12 W or 24 - 28 VDC / 200 mA

Enviroment:

Operating temperature: -5°C ... 50°C
Relative humidity: 5% - 95% (non-condensing)

Accuracy:

GPS (DCF input) to NTP server:                              typically < ± 0,5 ms
DCF 77 radio receiver to NTP server:                      typically < ± 5 ms
NTP client to NTP server:                                         typically < ± 0,5 ms
GPS (DCF input) or NTP client to DCF/impulse:      typically < ± 2 ms
Holdover (unsynchronized)                                       < ± 0,1 s/day (after 24 hrs. synch. from time source)

Time-keeping:

RTC with time saving for min. 5 days (without battery)

NTP slave clocks:

1 line with time zone server function via multicast or unicast

Operation:

Telnet or SSH, MOBA-NMS over LAN or operation via SNMP