⑴ Four slides per 24 hours for any input 2048kbit/s digital signal, resulting in a general alarm. The critical alarm for the frequency regulation range of the
⑵ phase-locked loop. A general alarm is emitted due to the aging of the clock crystal, which causes the inherent clock frequency to deviate from the control range of the phase-locked loop (control signal exceeding three-fourths of the clock adjustment range).
⑶ The industrial-grade All-network router loses the input frequency base for 10 minutes or a continuous error frame for 10 minutes to produce a general alarm.
⑷ routers if one of the frequency benchmarks fails or drops, a general alarm should be generated. If all the input frequency reference failure or quality should produce a serious alarm.
⑸ for any input 2048kbit/s digital signal, every 24 hours, this number is equal to or more than 255 times to produce a serious alarm.
⑹ Industrial CDMA routers lose a frequency base of 24 hours or a continuous error frame for 24 hours to produce a serious alarm.
⑺ The clock itself fails, such as a constant temperature tank failure, a clock stop, and a serious alarm.