Clock Synchronization Device
The TOPAZ Metronome PTS device is designed to form a time scale (TS) synchronized with the UTC (SU) TS using radio signals from GLONASS and GPS navigation systems, and to generate standard time signals for process equipment and communication network equipment.
The device can be used in automatic systems for commercial accounting of power consumption, automated process control systems,  relay protection and automation systems , power quality metering systems, emergency event recording systems, and other systems where accurate time-frequency synchronization is required. The device has a large variety of modifications for communication ports to choose the best option for specific tasks.
  • Specifications

Specifications

Feature Value
Central processing unit
Processor type ARM Cortex-A8
Frequency up to 1000 MHz
RAM memory 512 Mb (DDR3L)
ROM memory 4 Gb (eMMC)
Memory for storing keys and coding algorithms 1284 kb
Operating system Linux
Work accuracy
The limits of the permissible absolute offset of the own time scale relative to the Russian time scale UTC (SU) in the synchronization mode using GNSS GLONASS/GPS signals ± 200 ns
The limits of the permissible absolute offset of the own time scale relative to the Russian time scale UTC (SU) in the synchronization mode using the PTP protocol ± 200 ns
The limits of permissible basic absolute error of the built-in clock:
in standard conditions ± 0.02, s/day
in operating conditions ± 0.04, s/day
The limits of the permissible absolute offset of the own time scale relative to the Russian time scale UTC (SU) in the synchronization mode using the NTP, SNTP protocol ± 100 μs
The limits of the permissible absolute offset of the own time scale relative to the Russian time scale UTC (SU) in the battery mode ± 22 μs
RS-485 communication interfaces
Ports 2
Baud rate, bit/s: up to 115,200
RS-485 interface communication protocol IEC 870-5-101, Modbus RTU
Ethernet interfaces
Ports 2
Baud rate, Mbit/s: 10/100
Connector type RJ-45 (standard) LC ММ/SM (option)
Network redundancy protocols MSTP, RSTP, PRP/HSR
Mains specifications
Rated supply voltage, V: - standard version - HV version 24 (DC) 220 (AC/DC)
Operating supply voltage range, V: - standard version - HV version 15 ÷ 30 90 ÷ 265
AC frequency, Hz 50±5
Current consumption (at 24 V), A, max. 1
Cold start time, max., s 2
Design
Mounting type DIN rail 35 mm
Case material plastic
Case protection class IР20
Overall dimensions of the basic modification (width x height x depth), mm: - standard version - HV version 45 x 99 x 114.5
90 x 99 x 114.5
Weight, kg 0,8
Reliability performance
Mean time between failures, h 140000
Average time to restore operability at the operation facility (excluding the time of personnel arrival and if spare parts are available), min, max. 30
Average service life, years 30
Verification period, years 10
Operating environment:
Ambient air temperature, 0С -40 to +70
Average humidity (non-condensing), % 5 ÷ 95 at 30 °C
Air pressure, kPa 60 ÷ 106.7