GPS-1 series timing system

I. Overview

The GPS (Global Position System) satellite synchronous clock product is a high-precision timing and positioning system that uses OEM technology and is controlled by a CPU. It can provide high-precision time and position reference signals (time synchronization accuracy of 1 μ s, position accuracy of 5 meters) for power, transportation, oil, coal and other systems, suitable for relay protection, dispatch automation, distribution automation, communication and other fields. This product has the characteristics of strong anti-interference, high reliability, and easy use.
The GPS-1 series satellite clock synchronization device produced by our company meets the requirements of DL/T 478-2001 in the national "General Technical Conditions for Static Relay Protection and Safety Automatic Devices". It has passed the testing of the National Power Industry Power System Automation Equipment Quality Inspection and Testing Center and has a product testing qualification report issued by the center, as well as a registration certificate allowing its use in the power system.

2、 Technical indicators

1. Wireless receiving frequency: 1575.42MHz, capable of tracking 8-12 satellites simultaneously.
2. Antenna receiving sensitivity: -165dBW min, antenna length of 30 meters, can be extended to 40 meters or 50 meters according to user needs.
3. Initial satellite capture time: 10 seconds to 2 minutes.
4. Output port characteristics:
4.1 The optocoupler isolation node can provide outputs of 1PPS per second pulse, 1PPM per minute pulse, and 1PPH per hour pulse.
Timing accuracy: 1 μ s
Output polarity: positive pulse
Output pulse width: 400ms adjustable
Pulse edge transition time:<20ns
Isolation node external voltage: DC24V, DC220V optional
Isolation node working current:<50Ma
4.2 RS-232/RS-485 interface output
This device provides RS-232 and RS-485 output serial ports, with output once per second. The output data includes complete time information including year, month, day, hour, minute, and second. It can serve as a communication lower computer to provide accurate time information to the upper computer when needed. The communication format can be found in the sixth item of the serial communication instructions. Please note that the communication protocol of this device can be changed according to user requirements.
4.3 IRIG-B code interface
It can be transmitted in two ways: DC code and AC code, and can be connected to devices with IRIG-B interface.
5. Structural type:
Standard 19 "2U, 3U, 4U chassis.
6. Power supply AC/DC 220V ± 20%, power<15W.