NI PXI-6683 Series User Manual
© National Instruments | G-5
P
PCI Peripheral Component Interconnect—a high-performance expansion
bus architecture originally developed by Intel to replace ISA and
EISA. It is achieving widespread acceptance as a standard for PCs and
work-stations; it offers a theoretical maximum transfer rate of
132 Mbytes/s.
PFI Programmable Function Interface
PPS Pulse Per Second
precision the measure of the stability of an instrument and its capability to give
the same measurement over and over again for the same input signal
propagation delay the amount of time required for a signal to pass through a circuit
PXI a rugged, open system for modular instrumentation based on
CompactPCI, with special mechanical, electrical, and software
features. The PXIbus standard was originally developed by National
Instruments in 1997, and is now managed by the PXIbus Systems
Alliance.
PXI star a special set of trigger lines in the PXI backplane for high-accuracy
device synchronization with minimal latencies on each PXI slot
PXI_Trig/PXI_Star
synchronization clock
the clock signal that is used to synchronize the PXI Triggers or
PXI_STAR triggers on an NI PXI-6683
PXI Trigger the PXI timing bus that connects PXI devices directly, by means of
connectors on top of the devices, for precise synchronization of
functions
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