Daq Hardware; Daq-Stc - National Instruments NI 6711 User Manual

Chapter 1 DAQ System Overview

DAQ Hardware

Analog Output
Digital I/O
Counters

DAQ-STC

Analog Output Series User Manual
DAQ hardware digitizes signals, performs D/A conversions to generate
analog output signals, and measures and controls digital I/O signals.
Figure 1-2 shows the components common to all AO Series devices. The
following sections contain more information about specific components of
the DAQ hardware.
PFI
Analog output devices use the National Instruments DAQ system timing
controller (DAQ-STC) for time-related functions. The DAQ-STC consists
of the following three timing groups:
• AI—two 24-bit, two 16-bit counters (not used on AO Series devices)
• AO—three 24-bit, one 16-bit counter
• General-purpose counter/timer functions—two 24-bit counters
You can independently configure the groups for timing resolutions of 50 ns
or 10 μs. With the DAQ-STC, you can interconnect a wide variety of
internal timing signals to other internal blocks. The interconnection scheme
is flexible and completely software-configurable.
The DAQ-STC offers PFI lines to import external timing and trigger signals
or to export internally generated clocks and triggers. The DAQ-STC also
supports buffered operations, such as buffered waveform acquisition,
Digital
Routing
RTSI
Figure 1-2. Analog Output Block Diagram
1-2
Bus
Bus
Interface
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