子母(mu)(mu)(mu)鐘系統顧名思義(yi)是子鐘和母(mu)(mu)(mu)鐘構(gou)成，然而實(shi)際母(mu)(mu)(mu)鐘是接收衛星信(xin)(xin)號的(de)(de)(de)服務(wu)器(qi)作為標(biao)準(zhun)時(shi)(shi)(shi)間(jian)源給若干子鐘進(jin)行時(shi)(shi)(shi)間(jian)同步(bu)并達成精(jing)確(que)(que)時(shi)(shi)(shi)間(jian)顯示。所有子鐘接收母(mu)(mu)(mu)鐘從(cong)衛星上獲取(qu)的(de)(de)(de)標(biao)準(zhun)時(shi)(shi)(shi)間(jian)。母(mu)(mu)(mu)鐘的(de)(de)(de)應用不(bu)單(dan)是給子鐘提供(gong)時(shi)(shi)(shi)間(jian)標(biao)準(zhun)，也可同時(shi)(shi)(shi)給計算機，服務(wu)器(qi)，監(jian)控設(she)備，工業智能化設(she)備等提供(gong)精(jing)確(que)(que)的(de)(de)(de)時(shi)(shi)(shi)間(jian)信(xin)(xin)號從(cong)而達到時(shi)(shi)(shi)間(jian)統一(yi)。
現在大多(duo)數(shu)母鐘(zhong)是(shi)通過網(wang)(wang)絡(luo)進(jin)行同(tong)(tong)步時(shi)間，母鐘(zhong)服務(wu)器(qi)(qi)(qi)有多(duo)個(ge)網(wang)(wang)口除了(le)給(gei)(gei)子(zi)鐘(zhong)同(tong)(tong)步時(shi)間也可(ke)通過交換機給(gei)(gei)多(duo)種(zhong)不(bu)同(tong)(tong)的設(she)備同(tong)(tong)步授(shou)時(shi)。以(yi)我(wo)司(si)某產品來(lai)說(shuo)北(bei)斗GPS雙模NTP網(wang)(wang)絡(luo)時(shi)間服務(wu)器(qi)(qi)(qi)它內置(zhi)高精(jing)度授(shou)時(shi)型(xing)GPS北(bei)斗二(er)代衛(wei)(wei)(wei)(wei)星接(jie)收(shou)機，支持單北(bei)斗、單GPS、GPS北(bei)斗混(hun)合等三種(zhong)工作模式其傳輸精(jing)度到(dao)毫秒級(ji)，通過接(jie)收(shou)衛(wei)(wei)(wei)(wei)星信號轉換為(wei)網(wang)(wang)絡(luo)時(shi)間，脈沖和(he)串口輸出，然(ran)后網(wang)(wang)絡(luo)時(shi)間通過交換機分出給(gei)(gei)多(duo)路子(zi)鐘(zhong)或(huo)者其他設(she)備提供精(jing)確的衛(wei)(wei)(wei)(wei)星時(shi)間，它還會檢(jian)測每一(yi)臺(tai)設(she)備時(shi)間與服務(wu)器(qi)(qi)(qi)是(shi)否一(yi)致對于安全(quan)性來(lai)說(shuo)支持冗余備份心(xin)跳檢(jian)測功能當一(yi)臺(tai)服務(wu)器(qi)(qi)(qi)有問(wen)題(ti)時(shi)對于設(she)置(zhi)同(tong)(tong)一(yi)IP的服務(wu)器(qi)(qi)(qi)會切換到(dao)另一(yi)臺(tai)上極大的解(jie)決突發(fa)情(qing)況。有防(fang)火墻硬件看(kan)門狗(gou)也保(bao)障(zhang)用戶的安全(quan)性，可(ke)實(shi)時(shi)觀察衛(wei)(wei)(wei)(wei)星實(shi)收(shou)顆數(shu)以(yi)及是(shi)否是(shi)收(shou)星狀(zhuang)態一(yi)目了(le)然(ran)很方便，且安裝方便只需架設(she)天線即(ji)可(ke)。
隨(sui)著科(ke)技工業(ye)信(xin)息化的發(fa)展傳(chuan)統(tong)(tong)式鐘(zhong)表一般可(ke)以(yi)滿足(zu)正常家(jia)庭需(xu)(xu)要(yao)，但信(xin)息化時(shi)代對(dui)于大型(xing)機(ji)(ji)構單位以(yi)及某(mou)些特殊機(ji)(ji)構明顯傳(chuan)統(tong)(tong)式鐘(zhong)表不能(neng)滿足(zu)用戶實(shi)際(ji)過程中的需(xu)(xu)求，首(shou)先傳(chuan)統(tong)(tong)式鐘(zhong)表時(shi)間(jian)精度走時(shi)隨(sui)著時(shi)間(jian)的逐變會產生明顯誤差，如果在(zai)大型(xing)科(ke)研場地(di)用傳(chuan)統(tong)(tong)式子鐘(zhong)隨(sui)著時(shi)間(jian)變化導致(zhi)每個時(shi)鐘(zhong)都不同步(bu)，勢必(bi)會造成某(mou)些系(xi)統(tong)(tong)結果的不準確性(xing)和偏差。還(huan)有一點傳(chuan)統(tong)(tong)式的鐘(zhong)表如果時(shi)間(jian)不同步(bu)還(huan)需(xu)(xu)人為(wei)調節(jie)費時(shi)費力(li)極為(wei)麻煩。現(xian)在(zai)網絡科(ke)技的發(fa)展直接帶NTP或者無線傳(chuan)輸的子鐘(zhong)高效又(you)時(shi)間(jian)精度高調試也方便自己在(zai)計算機(ji)(ji)上就能(neng)調節(jie)省去去現(xian)場的麻煩情況，給用戶解決了(le)實(shi)際(ji)問題。
