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National Instruments Corporation
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Common Questions
This appendix contains a list of commonly asked questions and answers
relating to usage and special features of the NI PCI-6110/6111.
General Information
What is the NI PCI-6110/6111?
The NI PCI-6110/6111 is a switchless and jumperless enhanced
Multifunction DAQ device that uses the DAQ-STC for timing.
What is the DAQ-STC?
The DAQ-STC is the system timing control application-specific integrated
circuit (ASIC) designed by NI and is the backbone of the
NI PCI-6110/6111. The DAQ-STC contains seven 24-bit counters and
three 16-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 counters
The groups can be configured independently with timing resolutions of
50 ns or 10
µ
s. With the DAQ-STC, you can interconnect a wide variety of
internal timing signals to other internal blocks. The interconnection scheme
is quite flexible and completely software configurable. New capabilities
such as buffered pulse generation, equivalent time sampling, and seamless
changes to the sampling rate are possible.
What does the maximum sampling rate mean to me?
Sampling rate is the fastest you can acquire data on the device and still
achieve accurate results. The NI PCI-6110/6111 has a sampling rate of
5 MS/s. This sampling rate is at 5 MS/s regardless if 1 or 4 channels are
acquiring data.
