官網通知
2019/04/03
Declaration of GPS week rollover issue
Dear customer,
Thank you very much for choosing SIMCom modules
We︰
Shanghai SIMCom Wireless Solutions Ltd.
Declare that there is no GPS week rollover issue (refer to Appendix) on the modules listed below until the date marked.
Module No | FW | When the week rollover issue would occur |
SIM5320 Series | All FW versions | 2019/11/3 |
SIM5360 Series | All FW versions | |
SIM7100 Series | All FW versions | |
SIM68R | B03V00SIM68R11,B03V10SIM68R11 | 2022/10/29 |
B03V11SIM68R_11/96 ~ B03V23SIM68R_11/96 | ||
SIM68RB | B03V60SIM68RB 11/96,B03V61SIM68RB96 | |
SIM68V | B03V00SIM68V_11, B03V10SIM68V_11,B03V21SIM68V_38 | |
B03V11SIM68V_11/96 ~ B03V23SIM68V_11/96 | ||
SIM68VB | B03V60SIM68VB11/96,B03V61SIM68VB11 | |
SIM968 | B03V11SIM968_11,B03V20SIM968_11 | |
SIM33ELA | B03V20SIM33ELA1/9 ~ B05V83SIM33ELA1/9 | 2025/8/16 |
SIM33EAU | B05V82SIM33EAU1/9 | |
SIM68E | B03V60SIM68E_96 ~ B05V84SIM68E_96 | |
B04V62SIM68E_11 ~ B05V84SIM68E_11 | ||
B04V64SIM68E3D9 ~ B05V81SIM68E3D9 | ||
SIM68M | B03V20SIM68M_11/96 ~ B05V81SIM68M_11/96 | |
SIM68MB | B03V62SIM68MB11/96 ~ B05V80SIM68MB11/96 | |
SIM68R | B03V24SIM68R_11/96 ~ B05V80SIM68R_11/96 | |
SIM68RB | B03V62SIM68RB1A/9A | |
B03V62SIM68RB11/96 ~ B04V61SIM68RB11/96 | ||
SIM68V | B04V64SIM68V48P | |
B04V62SIM68V_11/96 ~ B05V85SIM68V_11/96 | ||
SIM68VB | B03V62SIM68VB_11/96 ~ B04V60SIM68VB_11/96 | |
B04V61SIM68VBD9 ~ B05V81SIM68VBD9 | ||
B05V82SIM68VB9B | ||
SIM968 | B03V21SIM968_96,B04V60SIM968_11/96, B05V20SIM968_J1,B05V81SIM968_11 | |
B04V60SIM968B11/96 ~ B04V61SIM968B11/96 | ||
SIM808 | All FW versions | 2030/8/10 |
SIM28ML | All FW versions | |
SIM28ML-H | All FW versions | |
SIM28M | All FW versions | |
SIM28 | All FW versions | |
SIM928A | All FW versions | |
SIM39EAR | All FW versions | |
SIM39EAU | All FW versions | |
SIM39EA | B02V32SIM39EA48,B02V60SIM39EA11/96/19 | |
B02V50SIM39EA19 ~ B02V51SIM39EA19 | ||
B02V31SIM39EA11 ~ B02V32SIM39EA11 | ||
B02V10SIM39EA96 ~ B02V51SIM39EA96 | ||
SIM7500 Series | All FW versions | 2032/12/12 |
SIM7600 Series | All FW versions | |
SIM7800 Series | All FW versions | |
SIM7000 Series | All FW versions | |
SIM868 | All FW versions | 2034/8/12 |
SIM868E | All FW versions | |
SIM68E | B06V11SIM68E_11/96 ~ B06V14SIM68E_11/96 | |
SIM68M | B05V83SIM68M_11 | |
B06V11SIM68M_11/96 ~ B06V14SIM68M_11/96 | ||
SIM68MB | B06V10SIM68MB11/96 ~ B06V11SIM68MB11/96 | |
SIM68R | B06V10SIM68R_11/96 ~ B06V11SIM68R_11/96 | |
SIM68RB | B05V10SIM68RB11/96 ~ B06V11SIM68RB11/96 | |
SIM68V | B06V10SIM68V_11/96 ~ B06V11SIM68V_11/96 | |
SIM68VB | B06V10SIM68VB11/96 ~ B06V11SIM68VB11/96 | |
SIM33ELA | B06V10SIM33ELA1/9 ~ B06V11SIM33ELA1/9 | |
SIM33EAU | B06V10SIM33EAU1/9 ~ B06V11SIM33EAU1/9 | |
SIM39EA | B02V60SIM39EA11/96/19 | 2035/9/8 |
Appendix
What is GPS week rollover issue?
The Week Rollover Problem is a known issue caused by the way that GPS used to handle the week element of the data that forms an essential part of the navigation signal. GPS used a 10 bit field to encode the week number in each GPS time message, which means that a maximum of 1,024 weeks (19.7 years), could be handled. Each of these periods is known in GPS terms as an “epoch”.
At the end of each epoch of 1,024 weeks, the receiver resets the week number to zero and starts counting again.
全球領先的M2M模塊及解決方案供應商
芯訊通無線科技有限公司（SIMCom Wireless Solutions）作為日海智能（深股002313）控股子公司，是全球領先的M2M模塊及解決方案供應商。自2002年成立以來，一直致力于提供GSM/GPRS/EDGE，WCDMA/HSPA/HSPA+，CDMA 1xRTT/EV-DO，FDD/TDD-LTE，eMTC(CAT-M1) ，NB-IoT無線蜂窩通信以及GPS/GLONASS/BEIDOU衛星定位等多種技術平台的模塊或終端級別解決方案。根據美國知名市場研究公司ABI Research Inc.最新的M2M報告顯示，芯訊通無線通信模塊銷售量連續三年佔全球領先地位。
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2019天翼智能生態博覽會
時間︰2019.9.19-22
2019天翼智能生態博覽會
2019中國國際智能產業博覽會
時間︰2019年8月26-29日
2019中國國際智能產業博覽會
第三屆中國無人零售大會
時間︰2019年8月21-23日
第三屆中國無人零售大會
Copyright ? 2019 芯訊通無線科技(上海)有限公司 版權所有 All Rights Reserved.滬ICP備18031063號
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