IEEE-1588 PTP Grandmaster - DTS 4160

IEEE-1588 PTP Grandmaster - DTS 4160

DTS 4160 is a combined time distribution and synchronization device with up to 4 network ports (IPv4/IPv6). It provides a time reference for PTP and NTP clients. With its high-precision and intelligent concept for redundant operation, it offers a high degree of reliability and availability

The DTS 4160 is a PTP grandmaster
according to IEEE 1588-2008 / PTPv2, with
IEEE 1588-2019 / PTPv2.1 compability,
for the synchronization of highly accurate
clients. Usable for telecom (e.g. LTE), energy
(e.g. smart grid), automation etc.

The DTS 4160 can reply to more than 10‘000
NTP and SNTP requests per second (up to
600‘000 clients depending on NTP client

For utmost availability, two DTS 4160 can be
connected to offer redundant master-slave
operation with automatic switch over in case
of an error.
A redundant power supply is also possible.

The DTS 4160 can receive all GNSS signals
(GPS, Galileo, GLONASS, BeiDou),
guaranteeing utmost accuracy and
availability. For GNSS security, multiple
constellations can be used in parallel.

The DTS 4160 offers state-of-the-art network
services such as VLAN, link aggregation and
static routing.

The DTS 4160 offers different oscillator
options for advanced holdover performance.

The DTS 4160 supports legacy outputs such
as IRIG, E1, DCF etc.

Show more
Oscillator type:Rubidium / OCXO
4 completely separated LAN ports (3x RJ45, 1x SFP):provides PTP on 3 ports 1- and 2-step master or slave, different profiles and domains per port, multicast/unicast, IPv4/IPv6/Layer 2, provides NTP on 4 ports (<10'000 requests/s on all 4 ports combined)
Outputs:1x E1 RJ48 (balanced) or BNC (unbalanced), 2x pulse/frequency/10MHz outputs, 1x IRIG-B / AFNOR, 2x serial output, 1x DCF current loop output
High precision time:Time reception from GPS, GLONASS or Beidou, GPS disciplined oscillator (GPSDO)
Redundancy:master-slave operation with automatic switch over in case of an error
Show more
IP configDHCP, DHCPv6, static IP, Autoconfiguration
Power supply90–240 VAC or 80–240 VDC, 0.5 A; 2x 24–28 VDC, 2 A (redundant, monitored)
AccuracyGNSS to internal time: < +/- 30 ns, Redundant connection to internal time: < +/- 50 ns, PTP to internal time: < +/- 200 ns, DCF to internal time (with GNSS 4500): < +/- 200 ns (after compensation for fix offset)
OperationMOBA-NMS, Telnet, SSH, SNMP (V1/V2c/V3 get, put), RS 232 (terminal)
Show more

Both, PTP and NTP provides time synchronization over a packet based network. But not both protocols are dedicated to the same application fields. It depends on the system’s needs, which of the protocol is preferred.

PTP is needed where a higher level of precision is required (e.g. Telecom, Power distribution, Air traffic control etc.) With PTP sub microsecond or even nanosecond accuracies are feasible, whereas NTP only reaches millisecond level. The key of PTP is hardware timestamping. Only if the timestamping happens close to the wire, it is possible to reach this high level of accuracy. The drawback of it is the need for dedicated hardware and an engineered network.

NTP is an old Internet protocol which is still widely used to distribute time (e.g. clock systems or IT Networks). NTP provides a simple way to synchronize all device over a regular network and even over internet. To ensure a reliable time in a local network, the best solution is to place an NTP server, which is connected to a GNSS Antenna, into the network. Whereas time is needed for clocks, access control systems and other such systems the accuracy of NTP is sufficient. The benefit of NTP is it’s robustness and it’s ability to run on a standard IT equipment.

If you need further information on this topic, please do not hesitate to contact us. We would be pleased to support you.

PTP is the “Precision Time Protocol”, which is defined in IEEE 1588. In contrast to NTP, this is a network protocol, which is characterized by significantly higher accuracies (down to the nanosecond range) and is usually used in locally limited networks (e.g. measurement / control / regulation technology, automation technology, etc.).


In the foreground is not the absolutely correct time information, but rather the high-precision “clocking” of interconnected devices in such industrial or computer networks. In connection with the PTP network organization and clock types, one speaks initially of Grandmaster Clocks (best possible reference device) and Boundary Clocks (devices with master and slave function), whose role distribution is determined using the best Master Clock algorithm. On the other hand, clearly defined roles are assigned to the ordinary clocks (either as master or clients), so-called transparent clocks then only forward the PTP time stamp when corrected. The runtime correction is ensured using complex computing algorithms. So it is not the case that one procedure is to be replaced by the other: NTP and PTP have different functional focuses, which is why both will continue to have authorization in the future and can also be used in parallel in computer networks if necessary.