Recording

This device has a self-diagnostic record processing mechanism, so the latest 1024 record reports can be saved.

SNTP/NTP protocol

This device supports the SNTP/NTP protocol and can work as a network time server.

IEEE 1588 protocol

This device supports the IEEE 1588V2 protocol (BC mode and OC mode) for clock synchronization. 

Signal reception

This device provides 2 reception channels for IRIG-B signal via its optical port or RS-485/422 port. In addition, it supports link-based reception time delay compensation.

Time service

This device supports GPS (Global Positioning System) and BDS (BeiDou Navigation Satellite System). In addition, it supports antenna transmission time delay compensation.

Remote supervision

This device supports local SCADA and remote control centre communication in using of protocols such as IEC 61850 to realize the device running status supervision.

Output clock synchronization signal

The kinds of output clock synchronization signal is rich, including PPS (Pulse Per Second), PPM (Pulse Per Minute), PPH (Pulse Per Hour), IRIG-B signal, timing message (serial), SNTP/NTP timing message (network), IEEE 1588 signal, etc.

Output interface

Various types of output interfaces are provided, including RS-484, RS-232, TTL, dry contact, AC modulation, optic fiber, RJ45, etc.

Dual power supplies redundancy

Dual power supply module is an option，The extra power supply module will be placed next to each other and works independently.

Double devices redundancy strategy

Two PRS-7391 can form a "dual source, dual network" clock synchronization system with a interconnection in using of IRIG-B signal. 

Output interface extension

The output interface extension is very flexible. Full support for up to 9 output modules, All signal outputs of the devices are isolated with strong anti-interference capability;

Human machine interface

The friendly HMI provides 5.7’’ LCD and navigation keypad for the display of real time, satellite tracking status, IRIG-B inputting status, current clock source, etc.