Programming instructions

Glossary
© National Instruments Corporation G-11 LabVIEW Data Acquisition Basics Manual
NRSE Nonreferenced single-ended.
O
onboard channels Channels provided by the plug-in data acquisition board.
OUT output pin A counter output pin where the counter can generate various TTL pulse
waveforms.
output limits The upper and lower voltage or current outputs for an analog output
channel. The output limits determine the polarity and voltage reference
settings for a board.
P
parallel mode A type of SCXI operating mode in which the module sends each of its input
channels directly to a separate analog input channel of the device to the
module.
pattern generation A type of handshaked (latched) digital I/O in which internal counters
generate the handshaked signal, which in turn initiates a digital transfer.
Because counters output digital pulses at a constant rate, this means you
can generate and retrieve patterns at a constant rate because the handshaked
signal is produced at a constant rate.
PGIA Programmable Gain Instrumentation Amplifier.
Plug and Play devices Devices that do not require dip switches or jumpers to configure resources
on the devices.
Also called
switchless devices.
postriggering The technique you use on a data acquisition board to acquire a programmed
number of samples after trigger conditions are met.
pretriggering The technique you use on a data acquisition board to keep a continuous
buffer filled with data, so that when the trigger conditions are met, the
sample includes the data leading up to the trigger condition.
pulse trains Multiple pulses.
pulsed output A form of counter signal generation by which a pulse is outputted when a
counter reaches a certain value.