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DTS 4138.timeserver

The DTS 4138.timeserver is a time reference for NTP clients in medium and large networks with up to 2 network ports (IPv4/IPv6). It is highly precise, and with its intelligent concept for redundant operation, it offers a high degree of reliability and availability. The DTS 4138.timeserver can serve more than 1500 NTP transactions per second on both ports combined.

The DTS 4138 has a built in NTP Server which can be configured in server, client or combined client-server mode in order to provide NTP (network time protocol) time distribution services in unicast or multicast modes over Ethernet LAN / WAN network. It can operate as a NTP time zone server by providing up to 20 time zones into encoded NTP-frame for world time clock synchronisation. In addition it provides the following synchronisation outputs: 1x RS232/RS485 configurable time telegram, 1x IRIG-B in both analog and DC level and 1x programmable pulse / frequencies. The network parameters (IP and gateway addresses) of the master clock can be managed by DHCP protocol (dynamic) from a server or by SSH protocols (static). The DTS 4138.timeserver can be synchronized by a GPS receiver, by IRIG-B time code or NTP. It can also operate in stand-alone mode thanks to an embedded high quality oscillator (DTS 4138.timeserver: TCXO, DTS 4139.timeserver: OCXO)

Your benefits using DTS 4138.timeserver:

  • If DTS 4138 is synchronized with a DCF or GPS source, the NTP can be used as redundancy source. In case GPS synchronization fails, the device will automatically take time synchronization from Internet over NTP and act as Stratum 2 device for all network clients. This function is active, as soon as at least one timeserver address is configured.
  • Supports NTP authentication for increased security, which allows the clients, to verify the source of the received NTP packets.
  • Alarms are reported by alarm relay, by e-mail, or via SNMP messages. Additionally, the display can be used to check the alarm state by pressing the red push button.
  • Safe and convenient operation over LAN via MOBA-NMS
    (SNMP), Telnet, SSH or SNMP protocols is possible. SSH and SNMP (MD5 authentication and DES for encryption) enable a secured connection. 

Technical Features


  • TCXO (OCXO optional)

2 completely separated LAN ports (2x RJ45):

  • Provides NTP on both ports (>1500 requests/s both ports combined)

Multi-purpose device due to the different time code and frequency outputs:

  • 1 x DCF/pulse/frequency output
  • 1 x IRIG-B / AFNOR
  • 1 x serial output
  • 1 x DCF current loop output

High degree of system redundancy by connecting two DTS 4138 via fiber optic link:

  • High availability
  • Master-Slave operation with automatic switch over in case of an error

High precision time:

  • Time reception from GPS, NTP

Typical applications are industries, Power distribution stations and power plants, where high reliability, high precision, no time leaps and permanent availability are required.

PCs/workstations, photocopiers, printers, fax equipment, time recording terminals, access control systems, central fire alarm systems, image and sound recording equipment, and many other kind of clients in the network can be directly synchronized by means of the network time protocol (NTP).


Technical Datasheet

Instruction & Operation Manual