National Instruments NI PXI-7851, Руководство пользователя

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Chapter 2 Hardware Overview of the NI 78xxR
© National Instruments Corporation 2-23 R Series Intelligent DAQ User Manual
Figure 2-12. PXI Star Trigger Connections in a PXI Chassis
Refer to the PXI Hardware Specification Revision 2.1 and PXI Software
Specification Revision 2.1 at
www.pxisa.org
for more information about
PXI triggers.
Switch Settings (NI 781
x
R/783
x
R Only)
Refer to Figure 2-13 for the location of switches on the NI PCI-781
x
R and
Figure 2-14 for the location of switches on the NI PXI-781
x
R. Refer
to Figure 2-15 for the location of switches on the NI PCI-783
x
R and
Figure 2-16 for the location of switches on the NI PXI-783
x
R. For normal
operation, SW1 is in the OFF position. To prevent a VI stored in flash
memory from loading to the FPGA at power up, move SW1 to the
ON position, as shown in Figure 2-17.
Note
SW2 and SW3 are not connected.
1 S h a red Loc a l B us Line s b etween S lot 2 a nd S lot 3
2 S h a red Trigger Line s b etween S lot 2, S lot 3 , a nd S lot 4
3 S h a red Loc a l B us Line s b etween S lot 3 a nd S lot 4
LBR0
LBR1
LBR2
LBR3
PXI Star*
Slot 2
LBLStar0
LBLStar1
LBLStar2
LBLStar3 LBR0
LBR1
LBR2
LBR3
PXI Star
Slot 3
LBLStar0
LBLStar1
LBLStar2
LBLStar3 LBR0
LBR1
LBR2
LBR3
PXI Star
Slot 4
3
1
2
* A Slot 2 device ties the PXI Star Line to the PXI 10 MHz clock
T
rigger 0
T
rigger 1
T
rigger 2
T
rigger 3
LBLStar0
LBLStar1
LBLStar2
LBLStar3
T
rigger 0
T
rigger 1
T
rigger 2
T
rigger 3
T
rigger 0
T
rigger 1
T
rigger 2
T
rigger 3