DTS 4128.timeserver

DTS 4128.timeserver - the innovative, precise time reference for networked, multifunctional systems

Technical Data

Time signal outputs

NTP / SNTP, NTP multicast
DCF-time signal output (opto coupler passive)

DTS Link (Redundancy)

Max. length of the fiberglass cable, e.g. multimode fiber Ø 50 μm: max. 550 m
multimode fiber Ø 62.5 μm: max. 275 m

Network services

NTP client
NTP server, max. no. of NTP and SNTP client requests: typical > 100 requests/ sec
SNMP V1, V2c, V3 (get, put, notification, trap) with MD5 authentication and
DES for encryption
E-mail for alarm messages (2 addresses possible)
DATE, TIME, FTP (for update)

Network interface

1 x 10BaseT / 100BaseTX (IEEE 802.3)
Data transmission rate: auto-negotiation / manual
Connection: RJ45 (only shielded cable permitted)

IP configuration

DHCP, static IP


Serial terminal via RS232 (front side, sub-D 9p male)

LED indication

Power supply, synchronization status, LAN status, alarm, DCF-input

Local time calculation

Automatic, pre-programmed daylight saving time change.
Up to 80 pre-defined time zone entries and 20 user-definable entries
All outputs can be individually allocated to a time zone (UTC or local time)


GPS (DCF input) to NTP server:               typical < ± 100 μs
GPS (DCF input) to DCF output:               typical < ± 10 μs
NTP to internal time:                                  typical < ± 100 μs
Redundant operation: master to slave       typical < ± 1 μs

Time-keeping (internal)

Synchronized with GPS:                                                          ± 10 μs to UTC
Hold over (after > 24 h synch. from GPS) at 20°C ± 5°C:     < ± 10 ms/d or < 0.1 ppm
Hold over (after > 24 h synch from GPS) at const. temp.:     < ± 1 ms/d or < 0.01 ppm
After restart without synchronization (for 24 hours),
at 20°C ± 5°C:                                                                       < ± 250 ms/d or < 2.5 ppm

External time source

External NTP / SNTP server (4 NTP sources possible), and / or
DCF 77 time signal receiver (current loop, e.g. DCF 4500), or
GPS time signal receiver (current loop, e.g. GPS 4500), or
manual time setting (only for test purposes)

Power supply

DC input: 24 VDC + 20 % / - 10 % / max. 10 W
DC output: nominal 24 VDC, max. 400 mA (supply for GPS receiver)


19” rack, 1 rack unit, W x H x D mm: 483 x 44 x 125


approx. 1.2 kg

Power reserve


Ambient temperature

0 to 60°C, 10 - 90 % relative humidity, without condensation


miniGBIC module patch cable
SX LC 1000Mbps, 3.3V for fibre optical cable (GigaBit Interface Converter)
2xLC/LC50/125μm patch cable Fibre Channel duplex 100 cm