Chapter 3
Hardware Overview
©
National Instruments Corporation
3-11
Figure 3-4 provides a more detailed view of the
Selection Circuitry
referenced in Figure 3-3.
Figure 3-4.
Signal Selection Circuitry Diagram
Determining Sources and Destinations
All signal routing operations can be characterized by a
source
(input) and
a
destination
. In addition, synchronous routing operations must also define
a third signal known as the
synchronization clock
. Refer to the
section for more information on synchronous versus
asynchronous routing.
PFI<0..5>
PXI_TRIG<0..7>
PXI_STAR<0..16>
Software Trigger
GND
CLK
CLK/N
CLK/M
SYNCHR
ONIZA
TION
CLOCKS
SOURCE
DESTINA
TION
CLKIN*
* CLKIN only valid for PXI_STAR