但是晶体的振荡频率受到温度影响，其振荡频率会有一定的偏移，造成分频后的时钟失准，在应用中需要根据晶体的温度漂移特性对RTC模块输出时钟信号进行校准。为了使RTC模块的输出时钟达到实时时钟的要求，现有技术的很多方法都采用对分频时钟频率补偿的方式提高RTC模块输出时钟的度。其中，*为广泛采用的是，在每次补偿周期都测量晶体的温度，然后根据晶体振荡的温度漂移特性将振荡的偏移量，即补偿参数补偿到RTC模块输出时钟里。
PV063R1K1T1NFR1
PV063R1K1T1NFHS
PV063R1K1T1NMM1
PV063R1K1T1NMRC
PV063R1K1T1NFWS
PV063R1K1T1NFRC
PV063R1K1T1NFF1
PV080L1K1T1NFFC
PV080R1K1B1NSLB
PV080L1K1T1NFHS
PV080R1L1T1MULC
PV080R1K1A1NFWS
PV080R1K1T1NFRL
PV080R1K1T1NGLA
PV080R1K1T1NMMC
PV080R1L8L3NULC
PV080R1L8T1NULC
PV092R1K8T1N001
PV092R1K1T1NFRZ
PV092R1K1T1NMM1
PV092R1K1T1NMRK
PV092R1K4T1NFHS
PV092R1K1T1NKLC
PV092R1K1T1VMMC
PV092R1L1T1WTCC
PV092R1K1T1NF
PV092R1D1T1NMMC
PV092R1K1T1NGLC
PV092R1K1T1NMF1
PV092R1K1T1WFR1
PV092R1K1T1NULZ
PV092R1K1T1NHLC
PV092R1K1T1NFFC
PV092R1K1A1NFWS
PV092R1K1T1NFHS
PV092R1K1T1NFF1
PV092R1K1T1NFWS
PV092R9K1T1NMMC
PV092R1K1T1NFR1
PV092R9K1T1NFWS
PV092R1K1T1N001
PV092R1K1T1EMMC
PV092R1K1S1NFWS
PV092R1K4T1NMR1
PV092R1L1L3WTCC
PV092R1K1T1NUPM
PV092R1K8T1NMMC
PV092R1K1T1VFDS
PV092R1K1T1NMRC
PV092R1K1T1WMM1
PV092R1K1T1PFDS
PV092R1K1T1WMRC
PV092R1K1A1NMMC
PV092R1K1T1NMMC
PV092R1K8T1VMMC
PV092R1K1T1NMMK
PV092L1K1T1NFWS
PV092R1K1T1NFDS
PV092R1K1T1NKLA
PV092L1K1T1NMMC
PV092R1K4T1NFR1
PV092R1K1T1NMFC
PV092R1K1T1N100
PV092R1K8T1NFWS
PV092R1K1JHNMMC
PV092R1K4T1NMMC
PV092R1K1A4WFRZ
PV092R1K1AYNMRZ
PV092R1K1T1WFDS
PV092R1K1T1NFRC
PV092R1K1T1NHCC
PV092R1D1T1VMMC
PV092R1K1T1NMRZ
PV092R1K1T1WMR1
PV092R1K1T1WMMC
PV092R1K1T1NMR1
PV092R1L1T1NMMC
PV092R1K1T1NFFP
PV092L1K1T1N001
PV092R1D1T1NGLC
PV092R1K1T1NMLA
PV092R1K4T1NFPD
PV092R1L1T1NFPD
PV092L1K1J1NFR1
PV092R1K1A1NSLA
PV140R1K1T1NFRL
PV140L1K8T1NSLC
PV140R1K1T1NTCB
PV140R1L1A1NF
PV140L9G3B1NTCC
PV140R1K1T1NWLA
PV140R1K1T1NSCA
PV140R1D3T1VFHS
PV140L1G1T1NFFP
PV140L1K1T1NFFC
PV140L1K1T1NFFP
PV140L1K1T1NFWS
PV140L1L1T1NWCC
PV140R1D1T1NFFC
PV140R1F1T1NFHS
PV140R1F1T1NYCC
PV140R1F3T1NFFC
PV140R1F3T1NFRP
PV140R1G1T1VFFC
PV140R1K1A1NSCC
PV140R1K1B1NFWS
PV140R1K1B1NUPG
PV140R1K1T1NFDS
PV140R1K1T1NFFC
PV140R1K1T1NFFD
PV140R1K1T1NFFP
PV140R1K1T1NFF1
PV140R1K1T1NFHS
PV140R1K1T1NF
PV140R1K1T1NFRC
PV140R1K1T1NFRD
PV140R1L1T1NUPG
PV140R1L1T1NWCC
PV140R1L4T1NUPG
PV140R1K1T1NMMC
PV140R1K1T1NMRK
PV140R1K1T1NMRZ
PV140R1K1T1NULC
PV140R1K1T1NWCC
PV140R1K1T1NWLC
PV140R1K1T1WMMC
PV140R1L1T1NMMC
PV140R9K1T1NUPZ
PV140R9L1LKNWCC
PV140R9K1A1NSLCK0173
PV140R9K1T1NFDSK0186
PV140R9K1T1NFFCK0011
PV140R9K1T1NFHSK0017
PV140R9K1T1NFRCK0107
PV140R9K1T1NFWSK0032
PV140R9K1T1NFWSK0155
PV140R9K1T1NKCCK0175
PV140R9K1T1NMLCK0081
PV140R9K1T1NSLCK0003
PV140R9K1T1WSCCK0072
PV140R9K4T1NFFPK0088
PV140R9K4T1NZCBK0154
PV140R9K4T1WFRPX5918
PV140L9G1T1NFFPK0083
802.3af正在推动监视网络与以太网融合的进程。除了部署过程得到简化，基于PoE的系统能够将摄像机安放到以前因为无法部署AC电源而难以安放的位置，并且获得内部电源保障。802.3af还有助于推动RFID技术应用的普及，支持802.3af的RFID阅读器可以与以太网交换机相连，以实时传输全新的标签位置跟踪信息。目前思科的此类产品就已在美国的两家大型中得到了应用。而言之，802.3af意味着只要是能够部署以太网线缆的地方，就可以安装许多易于安装的新设备。
