AT3340: Support BDS/GPS dual-mode timing board specification

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AT3340: Support BDS/GPS dual-mode timing board specification [Copy link]

AT3340 uses ATGM331C-5T31 timing module, which is a high timing precision BDS/GPS dual-mode receiver board, including 32 tracking channels, supporting GPS and BDS single system timing positioning and dual system joint timing positioning, which can be switched through host computer commands. The RF front-end chip and baseband chip are all independently developed by Hangzhou Zhongkewei, with independent intellectual property rights.

AT3340 can directly replace foreign timing boards, and the main interface signal is Pin-Pin; it has been widely used in power timing.

AT3340 Features

1. Timing accuracy: 20ns
2. Working current: 62mA
3. Built-in antenna detection function
4. Built-in antenna short circuit protection function
5. Complete timing warning information
6. Antenna short circuit current: 50mA@(3.00V~5.00V)
7. Antenna open circuit current: 5mA@(3.00V~5.00V)
8. Support single-system timing positioning of GPS and BDS and dual-system joint timing positioning

Performance indicators:

• Number of channels: 32 channels
• GPS only, BDS only, GPS&BDS cold start acquisition sensitivity: -148dBm
• GPS only, BDS only, GPS & BDS tracking Sensitivity: -160dBm
• GPS & BDS positioning accuracy: 2.5m (CEP50%, open area)
• GPS only Positioning accuracy: 3m (CEP50%, open area)
• BDS only positioning accuracy: 5m (CEP50%, open area)

AT3340 Applications

• Power Timing
• High-precision timing
• Communication base station timing
• Finance, transportation, rail, radio and television, measurement and other timing fields

The AT3340 dual-mode receiver module board outputs a time pulse corresponding to the full second of Coordinated Universal Time (UTC) by default, and the rising edge of the pulse is aligned with the moment. As shown in the figure below, the UTC time representation corresponding to the time pulse will be output through the protocol statement after a certain delay.

Complete timing warning information

It refers to a set of alarm information that can be provided to users in a timely and accurate manner in the timing system to ensure the accuracy and reliability of time synchronization when the system detects any anomaly or error that may affect time synchronization.