Weishang Electronics - School Electronic Clock System

NegotiableUpdate on 02/13

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The school electronic clock system is a device developed by Shandong Weishang Electronics Co., Ltd. that uses GPS technology to display and transmit standard time. The device is based on the US system (GPS) and can simultaneously track 12 satellites with a time accuracy of 0.1 μ S.

Product Details

　　School electronic clock systemNTP time transmission protocol is adopted to synchronize time through LAN or Internet. The time error does not exceed 1-50 milliseconds, and several slave clocks running at the same time are synchronized; If the network is not connected and there is no synchronization signal, the system comes with a high stability crystal oscillator that can self run with a time error of no more than 0.2 seconds per day. If a GPS module is embedded, it can use GPS and other modules to receive time when network signals are not received, which can ensure a more reliable time system. The clock is equipped with a rechargeable battery. When there is a power outage, the clock does not display, but its internal time continues to be maintained. In any mode, the clock never accumulates errors.

feature

High synchronization accuracy - using intelligent time compensation technology

● Long visible distance and good angle - using high brightness LED and anti glare panel

Low power consumption - adopts dynamic scanning technology and can achieve timed switching

Constant current drive, bidding farewell to traditional voltage drive, greatly extending the lifespan of LED

● Multiple timing methods - RS232/422/485, IRIG-B, CANBUS, NTP/SNTP network, wireless wifi, Zigbee

● It can be equipped with GPS/Beidou/CDMA receivers to achieve long-term high-precision self travel time

Intelligent management - can communicate with the upper computer and monitor the running status in real time

Owners can freely choose the shape and color of the sub clock shell

　　School electronic clock systemTechnical Specifications

LED display unit luminous intensity: ≥ 200cd/m2

● Contrast ratio ≥ 300:1

The viewing angle of the LED display screen is ≥ ± 75 º

Timing accuracy: ≤ 10ms

Self travel time accuracy: ≤± 0.05 seconds/day

Working temperature: -20 ℃ to+70 ℃; Humidity:<95%

Power supply voltage: 220V ± 20%

Power frequency: 50Hz ± 10%

Power consumption: ≤ 30W

Mean time between failures (MTBF): ≥ 150000 hours

Mean Time to Repair (MTTR): generally not exceeding 30 minutes

The service life shall not be less than 20 years, and no maintenance is required under normal usage conditions

Electromagnetic compatibility: Level III or above standards

LED characters: red/green/white/orange

Installation methods: hanging, wall mounted, embedded, mounted on pillars, etc