User guide

Operation Theory 27
3 Operation Theory
The operation theory of the PCI/PXI-9816/26/46 is described in
this chapter, including the control and setting of signal sources,
trigger sources, trigger modes, data transfers, and synchronizing
multiple modules.
3.1 Functional Block Diagram
Figure 3-1: PXI-98x6 Functional Block Diagram
Figure 3-2: PCI-98x6 Functional Block Diagram
PXI-98X6 Local Bus
Controller
Analog Input Path
16-bit ADC
Analog Input Path
16-bit ADC
Analog Input Path
16-bit ADC
16-bit ADC
PCI Bus
Memory
PCI Controller
Timing Control
PXI Trigger Bus
Trigger Routing
32-bit/66MHz
Analog Input Path
Analog Trigger
Circuit
CH3
CH2
CH1
CH0
TRG IO
CLK IN
PXI Trigger Bus[7..0]
PXI STAR Trigger
PXI 10MHz CLK
Precision Reference
Source
Calibration Circuit
PCI-98X6 Local Bus
Controller
Analog Input Path
16-bit ADC
Analog Input Path
16-bit ADC
Analog Input Path
16-bit ADC
16-bit ADC
PCI Bus
Memory
PCI Controller
Timing Control
SSI Bus
Trigger Routing
32-bit/66MHz
Analog Input Path
Analog Trigger
Circuit
CH3
CH2
CH1
CH0
TRG IO
CLK IN
Precision Reference
Source
Calibration Circuit