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Technical data
Dimensions
19“ Half Rack, 1HU x 14PU (H x W x D [mm]) = 43 x 221 x 252
Weight
approx. 2.0 kg
Ambient temperature
0 to 50ºC, 10-90% relative humidity, without condensation
MTBF
> 250’000 h
Expected lifetime
> 10 years, typical > 15 years
Operation
Telnet / SSH / MOBA-NMS (via LAN).
In addition, operation is also possible with SNMP.
Accuracy
Internal accuracy:
PTP to internal time
typ. < +/- 100ns
SyncE to internal time
typ. < +/- 200ns (frequency only)
Freq to internal time
typ. < +/- 200ns (frequency only)
Source to output:
PTP to NTP:
typ. < +/- 100 µs
PTP to Pulse:
typ. < +/- 100 ns
PTP to ToD:
typ. < +/- 100 ns
Notice:
NTP reception (DTS 4020 as server to external NTP clients) can be
influenced by the network traffic load and network devices (Hub, Switch,
Router, Firewall...).
If many clients request simultaneously, the typical accuracy may not be
reached.
Time server
NTP V4
(fully V3 compatible, RFC 1305), RFC 5905 (Port 123)
SNTP
(UDP), RFC 4330 (Port 123)
PTP
(UDP), IEEE 1588-2008 (V2) (Ports 319 and 320)
TIME
(TCP/UDP), RFC 868 (Port 37)
DAYTIME
(TCP/UDP), RFC 867 (Port 13)
Max. number of NTP and SNTP client requests:
> 10’000 requests / sec. per device
(e.g. client request every 60 sec.
600’000 clients)
NTP mode
Server, Peer, Broadcast, Multicast
PTP
-Standard: IEEE 1588-2008 (V2, no V1)
-P2P, E2E
-IPv4, IPv6, Layer2, UDP, multicast and unicast according to definition
IEEE 1588
- Slave only
-1-step and 2-step mode
-availability of management messages limited: requests only
-profile: default (E2E & P2P), ITU-T G.8275.1, ITU-T G8275.2
-no specific PTP SNMP MIB
VLAN
All LAN ports: 802.1Q (tagged VLAN) and 802.1p (prioritized VLAN)
2 VLANs per port can be defined (max. 4 VLANs)
2 Network interfaces
100/1000BaseT
Data transmission rate: Auto-negotiation / manual
Connection:
RJ-45
Only shielded cables are permitted
IP Configuration
DHCP, Static IP, IPv4, IPv6
