CLOCK PRESERVATION DEVICE OF BSM SYSTEM FOR UP-BAND CDMA SYSTEM AND CONTROL METHOD THEREOF

摘要

PURPOSE: A clock preserving device of the BSM system provides the exact data of the system maintenance/repair and reduces the cost of the system maintenance/repair. CONSTITUTION: The clock preserving device of the BSM system installs; a GPS TOD receiving unit(100) for outputting the TOD signal after receiving the signal with a specific time interval; a unix unit(200) for generating the BSM system clock; and a comparing unit(300) for outputting the high signal if the signal is different from the system clock longer than a specific time and for outputting the low signal if not after judging if the TOD signal is different from the BSM system clock longer than a specific time by comparing the BSM system clock with the TOD signal.