Справочник Пользователя для National Instruments NI PXIe-1065

Chapter 1

Getting Started

1-10

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Local bus signals may range from high-speed TTL signals to analog signals
as high as 42 V.

Initialization software uses the configuration information specific to each
adjacent peripheral module to evaluate local bus compatibility.

Figure 1-4. PXI Trigger Bus and Local Bus Connectivity Diagram

PXI Trigger Bus

All slots on the same PXI bus segment share eight PXI 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 located in the system timing
slot 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.

The PXI trigger lines from adjacent PXI trigger bus segments can be routed
in either direction across the PXI trigger bridges through buffers. This
allows you to send trigger signals to, and receive trigger signals from, every
slot in the chassis. Static trigger routing (user-specified line and directional

XP4

TP2

TP1

XP4

XP2

XP1

PXI_LB6

PXI_LB (12:0)

PXI

Trigger Bus

Buffer Bridge

PXI

Trigger Bus

Buffer Bridge

PXI Trigger Bus Segment 1

PXI Trigger Bus Segment 2

PXI Trigger Bus Segment 3