Chapter 1
Getting Started
©
National Instruments
1-9
NI PXIe-1071 User Manual
Figure 1-5.
PXI Trigger Bus Connectivity Diagram
PXI Trigger Bus
All slots share eight trigger lines.You can use these trigger lines in a variety
of ways. For example, you can use triggers to synchronize the operation of
several different PXI peripheral modules. In other applications, one module
can control carefully timed sequences of operations performed on other
modules in the system. Modules can pass triggers to one another, allowing
precisely timed responses to asynchronous external events the system is
monitoring or controlling.
System Reference Clock
The NI PXIe-1071 chassis supplies PXI_CLK10, PXIe_CLK100, and
PXIe_SYNC100 to every peripheral slot with an independent driver for
each signal.
An independent buffer (having a source impedance matched to the
backplane and a skew of less than 500 ps between slots) drives PXI_CLK10
to each peripheral slot. You can use this common reference clock signal to
synchronize multiple modules in a measurement or control system.
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