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本帖最后由 GerryChen 于 2016-1-27 16:15 编辑
Description: This is the latest version of our Venus GPS board; the smallest, most powerful, and most versatile GPS receiver we carry. It’s based on the Venus638FLPx, the successor to the Venus634LPx. The Venus638FLPx outputs standard NMEA-0183 or SkyTraq Binary sentences at a default rate of 9600bps (adjustable to 115200bps), with update rates up to 20Hz! The Venus638FLPx also allows for limited on-chip logging (check out the firmware below), as well as external logging using a SPI flash memory chip (not included). This board includes a SMA connector to attach an external antenna, headers for 3.3V serial data, NAV (lock) indication, Pulse-Per-Second output, and external Flash support. We’ve also provided solder jumpers to easily configure the power consumption, boot memory, and backup supply. This board requires a regulated 3.3V supply to operate; at full power the board uses up to 90mA, at reduced power it requires up to 60mA. We’ve made it easy to connect an external battery or super capacitor to the board, to support very fast restarts after power is removed. There are even pads on the bottom of the board for the 0.2F supercap (not included but you can find it in the related items below), which will keep the board hot-startable for up to 7 hours without power! Features: Up to 20Hz update rate -148dBm cold start sensitivity -165dBm tracking sensitivity 29 second cold start TTFF 3.5 second TTFF with AGPS 1 second hot start 2.5m accuracy Multipath detection and suppression Jamming detection and mitigation SBAS (WAAS / EGNOS) support 67mW full power navigation Works directly with active or passive antenna Internal flash for optional 75K point data logging Supports external SPI flash memory data logging Complete receiver in 10mm x 10mm x 1.3mm size Contains LNA, SAW Filter, TCXO, RTC Xtal, LDO Single 2.7-3.3V supply Dimensions: 1.15 x 0.7 inches 描述 :这是Venus GPS板的最新的一个版本。面积最小的,功能最强大的,拥有最多样功能的GPS接收器。 它基于 Venus638FLPx, 是Venus634LPx的继任者。Venus638FLPx以默认的9600bps 速率(可调节为 115200bps)输出标准的 NMEA-0183和 SkyTraq二进制输出,升级速率为20Hz 。 Venus638FLPx 也允许有限的芯片上的日志登记(检测以下的firmware),以及通过SPI Flash 存储器的芯片的外部日志记录。 这个板子包含SMA链接器以连接外部的天线,3.3V串联数据的排针,NAV(LOCK)显示。 每秒的脉冲输出,以及外部Flash的支持。 我们同样提供了跳转盖帽很容易地配置电源功耗,启动存储器以及备份电源。这个板子要求一个可调节的3.3V电源; 在满电源的时候板子耗费的电流高达90mA ,在减化的电源它要求60mA . 我们已经使得他很容易链接一个外部的电池或者超级电容到板子上,以支持当电源移除的时候的快速启动。在板子的底部甚至有焊盘对于0.2F的超级电容,(不包含但是你可以在以下的相关项目中找到),它将会保持板子在无电源的时候板子的热启动高达7个小时。 特性: 高达20Hz的更新速率 -148dBm 热启动灵敏度 -165dBm 追踪灵敏度 29 秒的热启动 首次定位时间用一个GPS 的3.5 秒的首次定位时间 1 秒的热启动 2.5m 的精确度 多路径检测和抑制 阻塞检测和缓解、 支持 SBAS(WAAS / EGNOS) 67mW的满功率导航 和主动天线和被动天线直接工作 可选择性的75K的数据登记的内部Flash 支持外部SPI Flash 存储器数据登记 完整的 10mm x 10mm x 1.3mm 尺寸的接收器 包含LNA , SAW 过滤器, TCXO ,RTC,Xtal, LDO 单电源 2.7-3.3V 尺寸 1.15 x 0.7 inches Venus_GPS-v21 SCH Venus_GPS-v21 PCB EasyEDA项目链接:https://easyeda.com/oshw/Venus_GPS_with_SMA_Connector_Open_hardware-OQK2WewOI EasyEDA链接:https://easyeda.com |
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