Data from the GPS signal allow you to determine the date and geographical position in three coordinates and create (regardless of the location of the receiver in Poland) a very accurate time pattern (error less than 1 µs) UTC/GMT (Universal Time).
The device provides information about the current GPS time via the RS-232 interface and/or the multimode glass or plastic fiber optic interface. Each of the mentioned interfaces, in addition to the transmitted and received data lines, has been equipped with an additional line, which transmits pulses marking the given time.
In addition, the device has been equipped with 3 pulse outputs to generate pulses at a preset time and duration. The generated pulses are synchronized with GPS time. The system is designed for industrial applications.
After starting the GPS-1xx time source, it starts acquiring signals from up to eight satellite transmitters that are within the field of view of the device's antenna. Before the GPS-1xx time signal source obtains full synchronization (it contacts at least three satellite transmitters), it provides the time from its own system clock, which is battery-backed. Impulses from GPS-1xx can be used to precisely characterize events in supervisory systems in the power industry and to synchronize measuring and control devices.
In the extended version, the system is equipped with three additional outputs that can be freely configured and used by the user. One of them is characterized by a very low delay and is therefore intended for generating synchronization pulses. []
RTS/GPS-2xx is a very accurate time server. Its basic task is to provide time information and synchronize devices and systems in relation to the time downloaded from GPS. Depending on the server version, the time source is the GPS/GLONASS satellite system signal or an external standard connected via the IRIG interface.
The internal GPS/GLONASS satellite receiver provides information with an accuracy of better than 20 ns. With an external reference, the accuracy depends on the accuracy of the source connected to the server.
The main place of installation of RTS/GPS-2xx series modules are SCADA/NMS systems, where information about the current time is crucial due to the operation of these systems. They can also be used in telecommunications systems, industrial automation systems and commercial networks where highly stable time patterns are needed. []
The SO-52v21-GPS-xx real-time server can be deployed in SCADA/NMS systems, systems for power quality analysis, systems for data acquisition from energy meters, where the synchronization of the operation of many distributed devices and information on current time is crucial for their operation and functionality.
The time server is a high accuracy device. Its primary function is to provide time information to substation automation system devices and other industrial devices that require precise time synchronization. The SO-52v21-GPS-xx uses a GPS/GLONASS satellite system signal as the time source. The internal GPS/GLONASS satellite receiver provides time information with an accuracy better than 20ns.
There are several design options available for the device, depending on the supply voltage and applied additional equipment.
The time is provided as UTC time; it does not process the winter-summer time change or the time zone correction. Time information can be shared via several different communication channels:
The SO-52v21-GPS-xx is composed of modules of the SO-52v21 family, used in substation automation equipment design. The device has a built-in LCD display and LEDs indicating the operating status of the device, status of synchronization with GPS/GLONASS satellites, presence of synchronization pulses.
The example execution may include the following modules:
A GPS/GLONASS antenna is required for correct operation of the SO-52v21-GPS-xx. There are two variants available: recommended and optional. It is recommended to mount the antenna on a pipe mast of a height corresponding to on-site conditions.
Supported communication protocols:
The task of the SO-5530-GT/GT1 time signal source is the conversion of the information signal and the time synchronization signal from the GPS satellite system into RS-232 and/or multimode fiber signals (glass or PFO type) and the generation of synchronization pulses at a given time and time duration. In the SO-5530-GT model, the antenna must be mounted outside the building, it is recommended to protect the antenna cable with a suitable lightning arrester.
Data from the time signal source allows you to determine the date and geographic position in three coordinates and create a very accurate time standard with an error of less than 1µs. The system is designed for industrial applications.
DGPS data is available both through the RS-232 interface and through the fiber interface. The SO-5530-GT is equipped with a 230/220V AC/DC power supply.
The SO-5530-GT1 device is equipped with a version of the GPS signal receiver that allows determining the UTC time with only one satellite visible. In this version, the location of the antenna connector has also been changed. In this model, it is acceptable to place the antenna in the building, directly next to the device. In addition, this device can operate in an extended range of nominal supply voltages (110÷230/110÷220) V AC/DC.
The SO-5530-GT/GT1 device is designed for mounting on a 35mm DIN rail. []
The task of the SO-5540-GT is to receive GNSS satellite signals, use them to determine the current time and provide it via six separate RS-232 communication interfaces. The data provided by the SO-5540-GT allows you to determine the date and geographic position in three coordinates and create a very accurate time standard with an error of less than 1 µs. The device is dedicated to industrial applications.
Until full synchronization with at least three transmitters is achieved,
SO-5540-GT gives the time according to its own system clock. After obtaining it, it is able to maintain the accuracy of the given time even when only one satellite is visible. Simultaneously with the GMT time message, a separate transmission line, a PPS signal with an accuracy of better than 1 µs is sent. Such a signal can be used to precisely characterize events in supervisory systems in the power industry and to synchronize measuring and control devices.
The SO-5540-GT gives the time according to its own system clock. After obtaining it, it is able to maintain the accuracy of the given time even when only one satellite is visible. Simultaneously with the GMT time message, a separate transmission line, a PPS signal with an accuracy of better than 1 µs is sent. Such a signal can be used to precisely characterize events in supervisory systems in the power industry and to synchronize measuring and control devices.
SO-5540-GT provides data via 6 independent, galvanically separated RS-232 ports. Each port is equipped with a TxD line, through which it sends data to DGNSS, and a PPS line for measuring the currently given time.
The device is powered by 230/220V AC/DC and is adapted for mounting on a 35mm DIN rail. []
