NI STC3的技術也提升了帶緩衝Counterceliangdexingneng。zaiceliangmaichongzhouqihuopinlvshichulekeshiyongyinshidingshifangshi，yezhichishezhicaiyangshizhong。shezhicaiyangshizhongdingshifangshiceliangzhouqihuopinlvshijishangyinyongleyigeneibushijiduiweizhideceliangxinhaojinxingbijiao。dangyigecaiyangshizhongxinhaodaolaishi，huijisuanchuheqianyigecaiyangshizhongxinhaozhijianneibushijichanshengleduoshaogeshangshengyan，youyuyinyongdeneibushijipinlvyizhi，shijishangkeyijingquejisuanchuzhelianggecaiyangshizhongxinhaozhijiandeshijian，zaichuyizheduanshijianweizhixinhaodezhouqishujiushixinhaodepingjunpinlv。zhexiejisuandeguochengshixinpianzidongjinxingde，cededepinlvhuozhouqizhizhijiexierudaohuanchongquzhong。yinyongdeneibushijishibankashangneibujingzhenzidongfenpindedaode，danshicaiyangshizhongbixuyouyonghujinxingshezhi。
圖7 設置采樣時鍾的Counter測量
NI STC3技術使得X係列產品還在數字I/O和PFI口上增添了很多新特性。看門狗定時器可以通過軟件設置數字輸出安全狀態來防止係統崩潰或者X係列產品與外部設備連接時硬件的損壞。當使用看門狗功能時，Xxiliebankaxuyaobuduandidedaokanmengouzhongzhizhiling，ruguozaizhidingshijianneimeiyoudedaozhegezhiling，shuzishuchujiuhuizhiweiyonghutiqianshezhideyigeanquanzhuangtaixia，shebeijianghuihulvesuoyoudeshuzixieru，zhidaokanmengoubeiquxiaohuozheshebeizhongxinqidong。M係列中邊沿檢測功能僅限於Port0，而X係列每個Port均具有這項功能。M係列產品PFI口上可以設置數字濾波，但隻能選擇3個級別的固定最小脈寬(表4)，而X係列可供客戶自定義設置最小脈寬，隻需是板載晶振的整數倍即可(表5)。另外X係列產品在數字I/O線上也提供了3個級別的數字濾波。
表5 X係列PFI口數字濾波選擇
X 係列板卡新增加了2個定時引擎供數字輸入和數字輸出使用。在過去的M係列產品中，如果為DIO設置定時任務需要引用其他通道的采樣時鍾，如AI的采樣時鍾或使用Counter的輸出，這種使用方式稱之為相關數字I/O。現在X係列產品可以獨立地執行數字波形輸出或是采集，不但節省了板卡其他資源，還允許為DIO配置和其他通道不同的采樣率。
