© National Instruments Corporation C-1 NI 6013/6014 User ManualCCommon QuestionsThis appendix contains a list of commonly asked questions and theiranswers relating to usage and special features of the NI 6013/6014.General InformationWhat is the DAQ-STC?The DAQ-STC is the system timing control application-specificintegrated circuit (ASIC) designed by NI and is the backbone of theNI 6013/6014. The DAQ-STC contains seven 24-bit counters and three16-bit counters. The counters are divided into the following three groups:• AI—two 24-bit, two 16-bit counters• AO—three 24-bit, one 16-bit counters• General-purpose counter/timer functions—two 24-bit countersThe groups can be configured independently with timing resolutions of50 ns or 10 μs. With the DAQ-STC, you can interconnect a wide variety ofinternal timing signals to other internal blocks. The interconnection schemeis quite flexible and completely software configurable. New capabilitiessuch as buffered pulse generation, equivalent time sampling, and seamlesschanging of the sampling rate are possible.What does sampling rate mean to me?Sampling rate is the fastest you can acquire data on the NI 6013/6014 andstill achieve accurate results. For example, these devices have a samplingrate of 200 kS/s. This sampling rate is aggregate: one channel at 200 kS/sor two channels at 100 kS/s per channel illustrates the relationship.What type of 5 V protection does the NI 6013/6014 have?The NI 6013/6014 has 5 V lines equipped with a self-resetting 1 A fuse.