Glossary
SCB-68 Shielded Connector Block User Manual G-6 ni.com
Nyquist frequency a frequency that is half of the sampling frequency
O
OUT output pin—a counter output pin where the counter can generate various
TTL pulse waveforms
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 MB/s.
PFI Programmable Function Input
PFI0/TRIG1 PFI0/trigger 1
PFI1/TRIG2 PFI1/trigger 2
PFI2/CONVERT* PFI2/convert
PFI3/GPCTR1_
SOURCE
PFI3/general purpose counter 1 source
PFI4/GPCTR1_GATE PFI4/general purpose counter 1 gate
PFI5/UPDATE* PFI5/update
PFI6/WFTRIG PFI6/waveform trigger
PFI7/STARTSCAN PFI7/start of scan
PFI8/GPCTR0_
SOURCE
PFI8/general purpose counter 0 source
PFI9/GPCTR0_GATE PFI9/general purpose counter 0 gate
PGIA Programmable Gain Instrumentation Amplifier
port (1) a communications connection on a computer or a remote controller (2)
a digital port, consisting of four or eight lines of digital input and/or output
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