Wharton 5000 series GPS or GLONASS synchronised Ethernet NTP Time Servers for clock systems and networks

NTP/SNTP - The 5000 series Time Server can be time synchronised from a remote NTP time server located on your TCP/IP network

All models have a 10/100Base-t Ethernet interface to allow the unit to act as an NTP Time Server on a TCP/IP network. 5600 network time servers are fitted with dual 10/100Base-t Ethernet interfaces to provide additional system redundancy and expansion capability.

The following network protocols are supported:

Network Time Protocol (NTP) is one of the oldest Internet protocols in use and was originally designed in 1985 by David L. Mills of the University of Delaware. NTP is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks.

NTP is intended to synchronize all participating computers to within a few milliseconds of Coordinated Universal Time (UTC). It uses a modified version of Marzullo's algorithm to select accurate time servers and is designed to mitigate the effects of variable network latency. NTP can achieve better than one-millisecond accuracy in local area networks under ideal conditions.

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All models have a 10/100Base-t Ethernet interface to allow the unit to act as an NTP Time Server on a TCP/IP network.

All versions have either one or two zCode® output ports for the control of digital and analogue clock systems and similar equipment.

Each zCode® port may be user programmed to provide one of the following coded signal outputs:

The Master Clock generates a precision one pulse per second output of 100mS duration at RS232 levels. The leading edge of the signal is within 50uS of UTC when locked to GPS or GLONASS.

The RS232/RS485 serial output port is user programmable for 1200-57600 Baud, 7/8 data bits, odd/even/no parity with a data format selected from over 80 predefined serial messages and has a DB9 connector.

The 5000 series network time server can have a maximum of 3 independently configured serial ports using the standard port plus an optional SER23 module.

Additionally, multiple SER23 modules may be fitted to the same unit to provide additional buffered outputs for ports 2 and 3.

An AFOUT optional output interface module adds two outputs which are individually user programmable to generate either 1Khz amplitude modulated IRIG-B time code for the synchronisation of various voice recording, data logging and distributed control system equipment or EBU (LTC) time code for use in broadcast applications.

The DEMOUT optional module has four logic-level outputs. The module can be user configured to output demodulated IRIG-B, MSF or DCF time codes, a pulse per second or other selectable periodic signals on all four mirrored outputs.

The OPTOUT optional Dual Fiber Optic module has two independently configurable ports that can output demodulated IRIG-B, EBU or Serial ASCII data.

The module has ST Fiber Optic connectors - 62.5/125um (820nm).

Two versions of an optional relay module are available with dual independent relay contact pairs for periodic programmed and synchronised closure, signalling of error conditions and precision-timed control of third-party equipment.

The LVRELAY module has dual contact pairs rated at 110V DC amp.

The RELAY module has dual contacts rated at 230V AC amp.

The optional dual-port SER23 module provides two additional RS232/RS485 serial output ports. Each port is user programmable for 1200-57600 Baud, 7/8 data bits, odd/even/no parity with a data format selected from over 80 predefined serial messages and has a DB9 connector.

The 5000 series network time server can have a maximum of 3 independently configured serial ports using the standard port plus an optional SER23 module.

Additionally, multiple SER23 modules may be fitted to the same unit to provide additional buffered outputs for ports 2 and 3.